- Discuss - lists.centos.org

pam_sss fails to close cache files
by Anand Buddhdev 03 Jun '16

03 Jun '16

Dear folks, After updating some of our servers to CentOS 6.8, we've noticed that the ones using pam_sss.so for authentication, appear to be suffering from a leak of sorts. On these systems, the /var partition is running out of disk space, and we eventually noticed that it's because of deleted, but still open files like these: httpd 1081 apache 8r REG 253,2 6406312 6199 /var/lib/sss/mc/group (deleted) sshd 1609 root 3r REG 253,2 8406312 431 /var/lib/sss/mc/passwd (deleted) mysqld 2018 mysql 4r REG 253,2 10406312 436 /var/lib/sss/mc/initgroups (deleted) Each time any process uses pam in some way, it's opening these cache files in /var/lib/sss/mc, but not closing them, and they're accumulating. The reason they're accumulating is that the initgroups, group and password file are frequently refreshed (by sssd), and so each open() call to them looks at a new file. We traced the sshd process, and noticed this: open("/var/lib/sss/mc/passwd", O_RDONLY|O_CLOEXEC) = 3 But there is no matching "close(3)" call anywhere (all other files opened have a matching close() system call). Has anyone else seen this issue, and does anyone know a quick solution to this? Regards, Anand

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Virtualbox 5.0.20 fails to build module on latest C6.8 kernel
by Robert Arkiletian 02 Jun '16

02 Jun '16

Notice: The kernel modules for Virtualbox 5.0.20 will not compile on the latest C6.8 kernel 2.6.32-642.el6.x86_64 It's a known issue. https://www.virtualbox.org/ticket/14866 Fix is coming out with Virtualbox 5.0.22 version (hopefully soon).

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Minimum RAM requirement for CentOS 6.x graphic installer?
by Nicolas Kovacs 02 Jun '16

02 Jun '16

Hi, The title says it all. What's the minimum RAM requirement for the CentOS 6.x graphic installer? In our public libraries we have some old hardware running CentOS 5, and I wonder if some of these machines can be upgraded to CentOS 6. Unfortunately RHEL 5.x' nifty text mode installer got seriously crippled with version 6.x. Cheers, Niki Kovacs -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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Re: [CentOS] [exim] Exim not always logging Message-ID
by Always Learning 02 Jun '16

02 Jun '16

On Thu, 2016-06-02 at 13:27 +0100, Mike Brudenell wrote: > My point is that a busy sysadmin shouldn't have to rely on intimate > knowledge of Exim's internal behaviour and oddities when trying > tracing a message from the logs. Some of us, well at least 1, have written a simple PHP programme, run on Apache, which instantly searches the current log and the archived logs for anything in the logs. Tracing items in Exim could not be quicker or easier - all done from the comfort of a web page with no terminal CLI or GREP insight. -- Regards, Paul. England, EU. England's place is in the European Union.

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Problem with Firefox and SSH/browser
by Sergio Belkin 02 Jun '16

02 Jun '16

Hi folks, I have a problem, shame on me I feel as newbie, I cannot open Firefox though ssh. ssh server is 7.2 and ssh client (running Xorg) is Fedora 23. Firefox does not open. I've tried a lot of methods, even adding xauth cookie, and for example: firefox --no-remote --no-xshm debug3: receive packet: type 90 debug1: client_input_channel_open: ctype x11 rchan 2 win 65536 max 16384 debug1: client_request_x11: request from 127.0.0.1 59181 debug2: fd 7 setting O_NONBLOCK debug3: fd 7 is O_NONBLOCK debug1: channel 1: new [x11] debug1: confirm x11 debug3: send packet: type 91 debug3: receive packet: type 90 debug1: client_input_channel_open: ctype x11 rchan 3 win 65536 max 16384 debug1: client_request_x11: request from 127.0.0.1 59183 debug2: fd 8 setting O_NONBLOCK debug3: fd 8 is O_NONBLOCK debug1: channel 2: new [x11] debug1: confirm x11 debug3: send packet: type 91 debug2: channel 2: rcvd adjust 39228 I need to open a browser, ok, I could install konqueror, but it pulls a bunch of apps that really I don't need. I'd want to install a browser from official repo... Could you help me? -- -- Sergio Belkin LPIC-2 Certified - http://www.lpi.org

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nfs bug - any info on bugzilla 1324635
by Jagga Soorma 02 Jun '16

02 Jun '16

Hi Guys, Anyone have any information on bugzilla 1324635. This seems like a private bug being tracked by redhat but is major and impacting us. Basically nfs gets impacted with large writes. Thanks!

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Re: [CentOS] Minimum RAM requirement for CentOS 6.x graphic installer?
by Denniston, Todd A CIV NAVSURFWARCENDIV Crane 02 Jun '16

02 Jun '16

On Thu, 2 Jun 2016 06:36:51 +0200 Nicolas Kovacs wrote: > The title says it all. What's the minimum RAM requirement for the CentOS > 6.x graphic installer? In our public libraries we have some old hardware > running CentOS 5, and I wonder if some of these machines can be upgraded > to CentOS 6. Unfortunately RHEL 5.x' nifty text mode installer got > seriously crippled with version 6.x. I think that if you feed the install a kickstart file, it will install in accordance with what you told it, but that does mean you have to spend some time figuring out what to put in your kickstart first. This would also give you some consistency between systems. Or you could let the 6.x "text installer" install it's minimal system, and then comeback and yum install everything else afterwards. fewer choices to make, but you get to live with RH's ideas of sane partition sizes. Another option for installing on smaller machines is to use the live disk[1] and a few tweaks[2] to do the install. However it will mean some hand holding on each machine to make it work, but I have done it and been reasonably happy with the resulting system. Note on a really small system (512MB or smaller), the use of zram (with the normal centos kernel, and swappiness~99), or zswap (with the elrepo kernel-ml) will make the system operate a lot better. It is too bad the live disks to not enable zram while booting when they don't find a linux swap part. [1] Have not seen the 6.8 live disk announce yet, https://lists.centos.org/pipermail/centos-announce/2015-August/021304.html [2] "HOWTO install CentOS 6 on low memory computer or virtual machine (even 192MB RAM)" https://lists.centos.org/pipermail/centos/2011-July/115367.html Even when this disclaimer is not here: I am not a contracting officer. I do not have authority to make or modify the terms of any contract.

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Centos 7 and Software Raid Minimal Install
by Matt 01 Jun '16

01 Jun '16

I am trying to install Centos 7 on a couple 4TB drives with software raid. In the Supermicro bios I set UEFI/BIOS boot mode to legacy. I am using the Centos 7 minimal install ISO flashed to a USB thumb drive. So I do custom drive layout something like this using sda and sdb. Create /boot as 512 MB XFS raid1 array. Create SWAP as 32 GB SWAP raid1 array. Create / on 3.xxx TB XFS raid1 array. I then get error. "Your BIOS-based system needs a special partition to boot from a GPT disk label. To countinue, please create a 1MiB 'biosboot' type partition." I cannot seem to create the biosboot partition so it is mirrored to both drives for redundancy. Any ideas how to do this? I want everything mirrored to both drives.

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CentOS-announce Digest, Vol 136, Issue 1
by centos-announce-request＠centos.org 01 Jun '16

01 Jun '16

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2016:1138 Moderate CentOS 6 squid Security Update (Johnny Hughes) 2. CESA-2016:1140 Moderate CentOS 6 squid34 Security Update (Johnny Hughes) 3. CESA-2016:1141 Moderate CentOS 6 ntp Security Update (Johnny Hughes) 4. CESA-2016:1141 Moderate CentOS 7 ntp Security Update (Johnny Hughes) 5. CESA-2016:1139 Moderate CentOS 7 squid Security Update (Johnny Hughes) 6. CESA-2016:1137 Important CentOS 5 openssl Security Update (Johnny Hughes) 7. CEBA-2016:1185 CentOS 6 kernel BugFix Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 31 May 2016 10:56:37 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1138 Moderate CentOS 6 squid Security Update Message-ID: <20160531105637.GA5229(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1138 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1138.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: e47c5002da71e2ae26beb75c5606d5014c2d9bd6c9e2372ab770a73af0194567 squid-3.1.23-16.el6_8.4.i686.rpm x86_64: d4a0380af389fc303e5db2764893651d0f8f320e22af7e240346e99379213a01 squid-3.1.23-16.el6_8.4.x86_64.rpm Source: 17e493babcd6f109e5feb8087ebbc60e5d4c938cb8a071343e134204cedb4079 squid-3.1.23-16.el6_8.4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Tue, 31 May 2016 10:58:08 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1140 Moderate CentOS 6 squid34 Security Update Message-ID: <20160531105808.GA5419(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1140 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1140.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 8b20601c95dc356ab1bb2b087331ee432f10cc567eb7503bef2e37891e18f03d squid34-3.4.14-9.el6_8.3.i686.rpm x86_64: 50ccde2efa8f46ef1c4dabba442427aa812ce24ecdf202e1390346dc190659b7 squid34-3.4.14-9.el6_8.3.x86_64.rpm Source: 304814481410fe9686f28f996c09882e794901d99aa3b509e92753ee683abf4c squid34-3.4.14-9.el6_8.3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 3 Date: Tue, 31 May 2016 10:58:56 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1141 Moderate CentOS 6 ntp Security Update Message-ID: <20160531105856.GA5714(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1141 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1141.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 8cb6eac95c0d760035a5b251c4f6f72920d0c23766e98c845885ea91d4a69f08 ntp-4.2.6p5-10.el6.centos.1.i686.rpm 45f7a3ef55eff1448bdc1e6dd7e7d8db030461562643b6df33d82f59b3eb20da ntpdate-4.2.6p5-10.el6.centos.1.i686.rpm 27f007b3249dcb28a17938d3d09ef2534c30c9106b21515849a44dada7aebdbd ntp-doc-4.2.6p5-10.el6.centos.1.noarch.rpm f9cb8483b4f76c243ab2b3dd60b37d43444425fd9df60f46c01c720cd04774fc ntp-perl-4.2.6p5-10.el6.centos.1.i686.rpm x86_64: e4177b6e3734069c1ee814bd358b92c9fb81d66b80ce02b687df4579174d8abe ntp-4.2.6p5-10.el6.centos.1.x86_64.rpm 7179b002333ae35af41f07b70c1d6c87407d446645038ec70f401fc178fc69f2 ntpdate-4.2.6p5-10.el6.centos.1.x86_64.rpm 27f007b3249dcb28a17938d3d09ef2534c30c9106b21515849a44dada7aebdbd ntp-doc-4.2.6p5-10.el6.centos.1.noarch.rpm 281370467116872d146d319ee7687896e59db493724b51ed3b9fac10b6d1787d ntp-perl-4.2.6p5-10.el6.centos.1.x86_64.rpm Source: f8d4b4a86e65c984352cd0c1b79bbbb518f986112f8ee91a2e2d953c270fc307 ntp-4.2.6p5-10.el6.centos.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 4 Date: Tue, 31 May 2016 11:58:54 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1141 Moderate CentOS 7 ntp Security Update Message-ID: <20160531115854.GA10886(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1141 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1141.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: afb3dfae974c95e885c4f6335cd06f21263224ae21bff8bd2a5c54d5dde44d00 ntp-4.2.6p5-22.el7.centos.2.x86_64.rpm 46cc107c74c97c07bbbf1275133cc0e1b6a5598fa53bb34650e7f7559a49a36e ntpdate-4.2.6p5-22.el7.centos.2.x86_64.rpm f916317311a69c1fc27d297a15df69002e0a92ae91f290bed52ac99bf3ff3dab ntp-doc-4.2.6p5-22.el7.centos.2.noarch.rpm aad649a9c029e0fc173d24eaa3e548524f3cbe7271128ebd571d9535b2a9d38a ntp-perl-4.2.6p5-22.el7.centos.2.noarch.rpm d2c4d2d7472eb1a732e68cec9f7e60bc17d356bc879e3b23a69faf607793a995 sntp-4.2.6p5-22.el7.centos.2.x86_64.rpm Source: ccbc05d3874452e7c1e9b72fac58c4fc5f69d9a37cf77c5b7ffe34d6416acfe2 ntp-4.2.6p5-22.el7.centos.2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 5 Date: Tue, 31 May 2016 11:59:06 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1139 Moderate CentOS 7 squid Security Update Message-ID: <20160531115906.GA10955(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1139 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1139.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 431c4c5b1d7c4795b0597f7a655c44e03db6cd573082375d28bb9eac9e527f4e squid-3.3.8-26.el7_2.3.x86_64.rpm 1c04bd54d4b10395d2c3e78a6e00ef49a7123a4347edf5aa70f57e71a87528c1 squid-sysvinit-3.3.8-26.el7_2.3.x86_64.rpm Source: fa239d6add7aeb21c9bceb300207e173ce7dbca3a6bd73c52266571d58e7ec91 squid-3.3.8-26.el7_2.3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 6 Date: Tue, 31 May 2016 12:09:14 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1137 Important CentOS 5 openssl Security Update Message-ID: <20160531120914.GA11861(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1137 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1137.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 631e91525505003d8b42dfc52fd9b1423aa4f62b52fe0a99b179fc7ca5d402df openssl-0.9.8e-40.el5_11.i386.rpm 91707deacf653a4c5e1ee71bfe78c312ddaf1ced22598aa0ed9364b801a95f75 openssl-0.9.8e-40.el5_11.i686.rpm b14fb301e7bb528ac9f12862471875a8a937e557437bf5dfeeb5bf45ba62a7a0 openssl-devel-0.9.8e-40.el5_11.i386.rpm 7f74ee4c3eb94f41034d716729f5a922301984327d3c7e1398d625e3d9828071 openssl-perl-0.9.8e-40.el5_11.i386.rpm x86_64: 91707deacf653a4c5e1ee71bfe78c312ddaf1ced22598aa0ed9364b801a95f75 openssl-0.9.8e-40.el5_11.i686.rpm 4b01840b72a7ee82f9a3eb20df16106e3c0fdfcd0fb83457487a740fb4774413 openssl-0.9.8e-40.el5_11.x86_64.rpm b14fb301e7bb528ac9f12862471875a8a937e557437bf5dfeeb5bf45ba62a7a0 openssl-devel-0.9.8e-40.el5_11.i386.rpm e2fd36a8953c239a4526ee747fcef4faf0e52ba5c8c3a870bf3d05895ee19e72 openssl-devel-0.9.8e-40.el5_11.x86_64.rpm 3bad2a15cbbb096392eb97d9a414aae6b05edacc290ae266b2bbc47a875cf0b2 openssl-perl-0.9.8e-40.el5_11.x86_64.rpm Source: 603c7be208dc0cb4de26b9db6a29d6aa9bf796d0227ee58d81a0c07038ef1bfe openssl-0.9.8e-40.el5_11.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: JohnnyCentOS ------------------------------ Message: 7 Date: Wed, 1 Jun 2016 00:32:10 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2016:1185 CentOS 6 kernel BugFix Update Message-ID: <20160601003210.GA30851(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2016:1185 Upstream details at : https://rhn.redhat.com/errata/RHBA-2016-1185.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: c9f9fe408219c4477449ea1ff02b1cdb8f138c7e8946b0107a2550e337d42db7 kernel-2.6.32-642.1.1.el6.i686.rpm 93aff6d219a35ccdb037f8ca0fb37ef2404dc932193050b04cfdab654fa74ef9 kernel-abi-whitelists-2.6.32-642.1.1.el6.noarch.rpm ff24d2f6561c5228368b4375b8cf6f28dbc5dd84d4a02c2390eb5ab12e89779a kernel-debug-2.6.32-642.1.1.el6.i686.rpm f685c21c4edddd1463a84253308120bb0842baf173defb56ad20305f7bebb8be kernel-debug-devel-2.6.32-642.1.1.el6.i686.rpm a263fb3038a7fa29613a4e957da4f6dcd3c6798fa56fbca19a1f64c5913d2eb9 kernel-devel-2.6.32-642.1.1.el6.i686.rpm dafcbcca6b84b865ad490ddd8c0bc769eda11f6291d9e3addbfe7f4ec4dc3b82 kernel-doc-2.6.32-642.1.1.el6.noarch.rpm 35e63ebedc5e4008d065dacccf333edb1fecb10f112281b281a3ac91277a9f46 kernel-firmware-2.6.32-642.1.1.el6.noarch.rpm c1b7eed3be0cdb28e06485332eb90f899841b6f389db3c5a8b441879197571ec kernel-headers-2.6.32-642.1.1.el6.i686.rpm dac134f20393e3bf654ed3622c5219d6cb58dfb3ebcc3caae8005a6cdad8ca64 perf-2.6.32-642.1.1.el6.i686.rpm b7d2ce2cba6bdeaa47a4373d45d753a58754069aedba9f34d65b9fb70f42daa8 python-perf-2.6.32-642.1.1.el6.i686.rpm x86_64: de1c95c8ea3e296a54477af2a7a8955090445142fcc4cea74161ca37b15d3d4f kernel-2.6.32-642.1.1.el6.x86_64.rpm 93aff6d219a35ccdb037f8ca0fb37ef2404dc932193050b04cfdab654fa74ef9 kernel-abi-whitelists-2.6.32-642.1.1.el6.noarch.rpm 11162d5665d1fb06e6f659f8fda34b9fa9b5204d41d1bf96a1982dc98c291fa0 kernel-debug-2.6.32-642.1.1.el6.x86_64.rpm f685c21c4edddd1463a84253308120bb0842baf173defb56ad20305f7bebb8be kernel-debug-devel-2.6.32-642.1.1.el6.i686.rpm 31e8b9b5786590bce2204b8ffbd326b83c8a89853a70b55273ff439734f8e793 kernel-debug-devel-2.6.32-642.1.1.el6.x86_64.rpm 5dd4737555f3c5562e4bcf0ebe5e739db0c132f17a0af760cfd66cc2394ee819 kernel-devel-2.6.32-642.1.1.el6.x86_64.rpm dafcbcca6b84b865ad490ddd8c0bc769eda11f6291d9e3addbfe7f4ec4dc3b82 kernel-doc-2.6.32-642.1.1.el6.noarch.rpm 35e63ebedc5e4008d065dacccf333edb1fecb10f112281b281a3ac91277a9f46 kernel-firmware-2.6.32-642.1.1.el6.noarch.rpm 6815bb0ce437d62c1ce2cd75e090a8c1d6f3c6f8176b3ded3932d0d1b7ad5878 kernel-headers-2.6.32-642.1.1.el6.x86_64.rpm 92728541814d02ed3ecc7ca0de5836a6a6c4aff8e2e9a74542d6c9a0f31b05d5 perf-2.6.32-642.1.1.el6.x86_64.rpm 5a2712140efe05cd0846c0e1eb77ecea7566666d424539bebeb0b3e37b0486ff python-perf-2.6.32-642.1.1.el6.x86_64.rpm Source: 4e812c4f1bd1a9172bea3c7b11680a359b0d051f964a720f6d4257a50a3b1215 kernel-2.6.32-642.1.1.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 136, Issue 1 ***********************************************

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Console screen changed on updating from CentOS 6.7 to CentOS 6.8?
by Walter H. 31 May '16

31 May '16

Hello, I have several CentOS 6 VMs, I have updated the first one successfully, but there is one thing I miss or I don't like; How do I get the standard console with 80x25 back? Hello, this is /boot/grub/grub.conf default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.32-642.el6.x86_64) root (hd0,0) kernel /vmlinuz-2.6.32-642.el6.x86_64 ro root=UUID=a27dc9a0-ea3a-497d-a9c3-80c7bbba31fa rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_NO_DM rd_NO_LVM KEYBOARDTYPE=pc KEYTABLE=de config_NO_HZ vga=0x0300 initrd /initramfs-2.6.32-642.el6.x86_64.img I've added 'vga=0x0300', but this results in 100x37? Thanks for Help, Walter

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NFS problem: getattr ERROR: Request couldn't be completed in time
by Matthias Leopold 31 May '16

31 May '16

i posted this also to linux-nfs, maybe this is a more appropriate place as it's clearly a "user" problem ### hi, i'm trying to mount a NFS 4 share with "sec=sys" from a NetApp FAS3250 on a CentOS KVM guest. this doesn't work, the mount doesn't complete and hangs. mount command is: /bin/mount -v -t nfs -s -o vers=4.1,sec=sys 10.110.96.90:/home /home/cir what i'm seeing in tcpdump is: 08:36:48.875019 IP 10.110.96.112.2456702824 > 10.110.96.90.2049: 212 getattr fh 0,1/53 08:36:48.875355 IP 10.110.96.90.2049 > 10.110.96.112.2456702824: reply ok 96 getattr ERROR: Request couldn't be completed in time server: 10.110.96.90 client: 10.110.96.112 status of nfs services: nfslock: running rpcbind: running rpcidmapd: stopped this happens with a centos 6 _and_ a centos 7 client (both KVM guests). NFS 3 mount of the share doesn't work either. other kvm guests (centos 6) on the same physical host can mount the share with no problem. the netapp admin tells me there's "no problem" on his side. iptables is disabled of course. ### what could be the problem on my (client) side? could this be a kvm problem? kvm host is centos 6. network mode is "bridge". network driver is "virtio". thx for any advice matthias

1 0

iptables.service listed as: not-found inactive dead
by Alexander Farber 31 May '16

31 May '16

Hello fellow CentOS users, on a freshly installed 7.2 machine and after reading https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/ht… I try to enable iptables with following commands: # cat /etc/centos-release CentOS Linux release 7.2.1511 (Core) # rpm -qa | grep iptables iptables-1.4.21-16.el7.x86_64 # sudo systemctl list-units --type service --all | grep iptables ● iptables.service not-found inactive dead iptables.service # sudo systemctl enable iptables.service Failed to execute operation: No such file or directory What missing file is meant here please? Thank you Alex

3 3

Status of RPMFusion repo for CentOS 5 and 6 ?
by Nicolas Kovacs 31 May '16

31 May '16

Hi, I have to maintain (and eventually beef up) desktop clients in public libraries running CentOS 5 and 6. The hardware is still OK, though sometimes really old, so the least evil will be to keep CentOS 5 on the old machines until that version is EOL. I've been using CentOS 5 as my main system somewhere between 2007 and 2009. At the time the RPMForge was my favorite third-party repository, though I understand that project is dead. I'm looking for a clean and viable solution to replace this. Here's what I intend to do. 1. Configure the base, updates and extra repos with a priority of 1. 2. Configure EPEL with a priority of 10. 3. Configure RPMFusion with a priority of 10. Now I don't know about the status of RPMFusion. Is this third-party repo still maintained? I wonder, since their home page only gives information about RHEL/CentOS 5 and 6. From what I understand, it's healthy to mix it with an EL+EPEL base. I'm planning to add some basic (and somewhat extended) multimedia capability to those desktop clients, so packages like mplayer, ffmpeg, lame and the likes will come in handy. For eventually missing packages (like eventually an old version of VLC for reading DVDs), I'll just grab the SRPMS from the old RPMForge repo and setup my own repo after building them locally. Any suggestions? Niki Kovacs -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

3 5

CENTOS 7.2.1511 Multipath and boot from SAN issue
by Fabien Ledoux 31 May '16

31 May '16

Hi all, I'm running a Centos 7.2.1511 freshly installed on a SAN device. Everything is fine on the SAN side, but I have an issue with multipath or udev or systemd, I'm not sure. I when I boot my machine with the multipathd service enabled at boot, boot fails beacause some partitions on the multipathed device are missing from /dev. >From the boot rescue shell, if I do a fdisk -l /dev/mapper/mpatha, I see 8 partitions, if I do a ls -l /dev/disk/by-uuid/ I see only 6 devices, so two devices are missing. I have to run kpartx -a /dev/mapper/mpatha manually in order to reread the partition table and recreate the 2 missing device. Only after that I'm able to boot correctly. Any idea of te root cause of this issue ? device-mapper-multipath is 0.4.9-85.el7_2.4.x86_64 Thanks for your time.

1 0

Kernel panic on 6.8 release with kernel-2.6.32-642.el6.x86_64
by Sorin Srbu 31 May '16

31 May '16

Hi all, Just tested the new CentOS 6.8 release on a few VMs and a physical box and got a kernel panic. Is it just me, or anybody else as well? Just fishing for now, will look into the issue more thoroughly later today. -- BW, Sorin ----------------------------------------------------------- # Sorin Srbu, Sysadmin # Uppsala University # Dept of Medicinal Chemistry # Div of Org Pharm Chem # Box 574 # SE-75123 Uppsala # Sweden # # Phone: +46 (0)18-4714482 # Visit: BMC, Husargatan 3, D5:512b # Web: http://www.orgfarm.uu.se ----------------------------------------------------------- # O< ASCII ribbon campaign - Against html E-mail # http://tinyurl.com/ascii-ribbon-campaign # # This message was not sent from an iProduct! # # Please consider the environment before printing this email. # Join the campaign at http://thinkBeforePrinting.org # # MotD follows: # The best prophet of the future is the past.

6 14

CentOS 6 spontaneous reboots
by Bill Gee 30 May '16

30 May '16

Hello everyone - My CentOS 6.8 server has been rebooting itself every 2 to 4 hours for the last several days. I do not know where to look for logs that might give a clue what the problem is. There are no unusual entries in /var/log/messages. I looked over other log files in /var/log and found nothing suggestive. Where else can I look? By luck I saw the beginning of a reboot on the server console. Normally I have other systems up on the KVM switch. It appears to have dumped core. I don't know where to look for the core dump files. They are not in /root. The problem started while the server was still 6.7. It had almost 290 days of uptime when the problem started. I have tried the following, none of which made any difference. I ran the upgrade to 6.8. I tried stopping non-essential services two at a time. I ran MemTest 86+. No memory errors were found. I turned off swap. I unplugged the USB hard drive that I use to hold daily and weekly backups. It was being recognized as /dev/sda for some reason. Lm_sensors shows the processor running between 45 and 50C. Hddtemp shows the hard drives running between 35 and 40C. LM_Sensors does not produce valid data on fan speed, but a visual check shows all fans running normally and no build-up of dust. The system is behind a big UPS that runs several other systems. The UPS log file does not record any power failures and none of the other systems are rebooting at random. What else can I look at? Thanks - Bill Gee

4 4

C6.8 YUM reference to Red Hat
by Always Learning 30 May '16

30 May '16

Doing a yum update on C6.8 ................. : yum update Loaded plugins: fastestmirror, priorities, protectbase Setting up Update Process Loading mirror speeds from cached hostfile * base: centos.datente.com * epel: mirrors.n-ix.net * extras: mirror.softaculous.com * updates: centos.datente.com base | 3.7 kB 00:00 base/primary_db | 4.7 MB 00:00 cr | 3.3 kB 00:00 cr/primary_db | 1.2 kB 00:00 epel | 4.3 kB 00:00 epel/primary_db | 5.8 MB 00:00 extras | 3.4 kB 00:00 extras/primary_db | 36 kB 00:00 mariadb | 2.9 kB 00:00 http://mirror.centos.org/centos/6/SCL/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found" Trying other mirror. To address this issue please refer to the below knowledge base article https://access.redhat.com/articles/1320623 If above article doesn't help to resolve this issue please open a ticket with Red Hat Support. ~~~~~~~~~~~~~ The Red Hat explanation is blocked. All one can read is " This issue generally occurs if client system is able to commun... Subscriber exclusive content" QUESTIONS (1) Should the Red Hat link be replaced by a Centos one ? (2) Why am I seeing a 'SCL' URL when I have not subscribed to Software Collections ? (3) I did not get the error when updating other C6 installations around Europe, probably because they used different sources, so is the error caused by a faulty mirror file ? Despite the error, I successfully installed acpid x86_64 1.0.10-3.el6 base 37 k centos-release x86_64 6-8.el6.centos.12.3 base 21 k findutils x86_64 1:4.4.2-9.el6 base 447 k logwatch noarch 7.3.6-54.el6 base 303 k pango x86_64 1.28.1-11.el6 base 351 k passwd x86_64 0.77-7.el6 base 89 k wget x86_64 1.12-8.el6 base 484 k Comments and advice welcome and appreciated, as always. -- Regards, Paul. England, EU. England's place is in the European Union.

2 3

grub (?) issue on Optiplex 780 A15, 6.8 upgrade
by Zube 30 May '16

30 May '16

Most of the upgrades to CentOS 6.8 have gone smoothly. Thanks, as always, for all the work that goes into making it so easy to upgrade. On a few machines, however, all of them curiously: Dell Inc. OptiPlex 780 /0C27VV, BIOS A15 08/06/2013 There is something wrong with their interaction with grub (?). I noticed this after adding '3' to the module line to get it to runlevel 3, but the machine came up at runlevel 5 anyway. On machines that are working correctly, the dmesg output looks like this: Command line: /boot/vmlinuz-2.6.32-642.el6.x86_64 ro root=UUID=20a8bd64-5783-4007-a5e4-e41bfc07f3c8 intel_iommu=on rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb rdblacklist=nouveau quiet if the options are on the module line or like this: Command line: ro root=UUID=7d11ff13-106f-42df-9a41-9ebf2505f6d2 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet crashkernel=auto rdblacklist=nouveau if the options are on the kernel line. But on the offending machines, it looks like this: Command line: /boot/vmlinuz-2.6.32-642.el6.x86_64 ro root=UUID=2a0a0120-8155-4ef4-8048-c82567746ca9 intel_iommu=on amd_iommu=on rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet rdblacklist=nouveaulevel: RAID 0: Stripes data (performance). RAID 1: Mirrors data (redundancy). Recovery: Copies data between a master and a recovery disk. So something seems to be scribbling somewhere where it shouldn't. These machines are not RAIDed in any way and I'm confident that I didn't see this problem when I upgraded to 6.7. If I reduce the length of the module line, it just scribbles a bit further back, i.e. "rdblacklist=nouveau1(Mirror)" Any advice appreciated. Cheers, Zube

1 0

Successful update from CentOS 6.7 to CentOS 6.8, but ...
by Walter H. 30 May '16

30 May '16

Hello, I have several CentOS 6 VMs, I have updated the first one successfully, but there is one thing I miss or I don't like; How do I get the standard console with 80x25 back? this is /boot/grub/grub.conf default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.32-642.el6.x86_64) root (hd0,0) kernel /vmlinuz-2.6.32-642.el6.x86_64 ro root=UUID=a27dc9a0-ea3a-497d-a9c3-80c7bbba31fa rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_NO_DM rd_NO_LVM KEYBOARDTYPE=pc KEYTABLE=de config_NO_HZ vga=0x0300 initrd /initramfs-2.6.32-642.el6.x86_64.img I've added 'vga=0x0300' (the same would be 'vga=768'), but this results in 100x37? Thanks for Help, Walter

1 0

Re: [CentOS] centos7 tmpfiles.d deleted outdate files
by Qiang Chen 30 May '16

30 May '16

Hi Jonathan Billings, the `age` can't apply to 'r', only would apply to 'd', 'D', 'x', 'X', etc "The age field only applies to lines starting with |d|, |D|, |v|, |q|, |Q|, |C|, |x| and |X|. If omitted or set to "|-|", no automatic clean-up is done." so, there have good idea if I only want to delete the specific files not all files in that dir? thx. On 2016年05月26日 20:54, Jonathan Billings wrote: > Boxbe <https://www.boxbe.com/overview> This message is eligible for > Automatic Cleanup! (billings(a)negate.org) Add cleanup rule > <https://www.boxbe.com/popup?url=https%3A%2F%2Fwww.boxbe.com%2Fcleanup%3Fkey…> > | More info > <http://blog.boxbe.com/general/boxbe-automatic-cleanup?tc_serial=25540750649…> > > > > On Thu, May 26, 2016 at 03:03:25PM +0800, Qiang Chen wrote: >> Would some one help me for this question? thanks very much. > I would suggest reading the tmpfiles.d man page. > > Use 'd' for the directory, and 'r' for the files you want to remove, > including the age. Something like 'r /path/* - - - 10s'. > -- Best Regards, Chen, Qiang

1 0

Re: [CentOS] centos7 tmpfiles.d deleted outdate files
by Qiang Chen 30 May '16

30 May '16

so, there no method to delete special files that below a directory? such as in the directory [root@chenqiang]# tree . ├── test_10d └── test_20d 0 directories, 2 files [root@chenqiang]# ll total 8 -rw-r--r-- 1 root root 4 5月 20 19:14 test_10d -rw-r--r-- 1 root root 4 5月 10 19:15 test_20d So, I want to delete file test_20d, keep test_10d, how to do that? thx. On 2016年05月27日 02:12, Gordon Messmer wrote: > Boxbe <https://www.boxbe.com/overview> This message is eligible for > Automatic Cleanup! (gordon.messmer(a)gmail.com) Add cleanup rule > <https://www.boxbe.com/popup?url=https%3A%2F%2Fwww.boxbe.com%2Fcleanup%3Fkey…> > | More info > <http://blog.boxbe.com/general/boxbe-automatic-cleanup?tc_serial=25543758553…> > > On 05/24/2016 11:18 PM, Qiang Chen wrote: >> #Type Path Mode UID GID Age Arg >> d /chenqiang 0775 root root 10s >> f /chenqiang/test_10s 0660 root root 10s >> f /chenqiang/test_20s 0660 root root 20s >> ``` >> >> It can delete dir if the age > 10s, but can't delete the files in it. > > > The man page for tmpfiles.d says, of the age field: > "The age field only applies to lines starting with d, D, and x." > > So, the line: > > d /chenqiang/test_10s 0660 root root 10s > > indicates that systemd-tmpfiles should create the directory > /chenqiang/test_10s, owned by root/root with mode 0660, and > periodically clean it of files and empty directories more than 10s old. > > Note that the default configuration runs systemd-tmpfiles once per > day, so specifying time periods much smaller than that may not be useful. > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > https://lists.centos.org/mailman/listinfo/centos -- Best Regards, Chen, Qiang

1 0

Unable to boot CentOS 6 - Segmentation Erorr
by John Cenile 29 May '16

29 May '16

Hi all, I had an issue this morning with one of my virtual machines. It wouldn't boot (into any runlevel), nor could I chroot into the root partition using a rescue disk. Unfortunately I didn't grab a screenshot, however the error(s) when booting were: /pre-pivot/50selinux-loadpolicy.sh: 14 <other messages> init: readahead main process (425) killed by SEGV signal init: readahead-col lector main process (421) killed by SEGV signal init: rcS pre-start process (425) killed by SEGV signal init: Error while reading from descriptor: Bad file descriptor init: readahead-col lector post-stop process (424) killed by SEGV signal init: rcS post-stop process (427) killed by SEGV signal init: readahead-disable-services main process (428) killed by SEGV signal When using a rescue CD and chrooting into the root partition, I would get : Segmentation Fault: Core Dumped In the end, the fix was to boot into a rescue CD with networking, and SCP the entire contents of /bin and /sbin from another (working) server to the broken installation. This finally allowed CentOS 6 to boot correctly. So I'm left to assume some of the files in /bin *or */sbin were corrupt. My question is, does anyone have any ideas on how this might have happened? I did do a quick memory test using the rescue CD (it didn't complete) and there weren't any errors. The virtual machine is running on VMWare with 3 other VMs, which all seem fine. There wasn't any unexpected power loss either. Thanks.

2 2

CentOS 6.8 Apache-2.2.15-53 re-write question
by Paul R. Ganci 29 May '16

29 May '16

I was wondering if somebody could help me with an Apache re-write rule. Apparently CentOS 6.8 is running apache-2.2.15-53. I am trying to redirect all pages except for two pages. The apache rewrite directives in the httpd config are: RewriteEngine on RewriteCond %{REQUEST_URI}!^/test/ RewriteCond %{REQUEST_URI}!^/my-folder/ RewriteRule (.*) http://www.newdomain.com/$1 [R=301,L] These commands should cause all requests to get re-directed to www.newdomain.com except for those with a /test or /my-folder on the end of the URL. However when I place these commands into the the httpd config apache spits out this error message: Starting httpd: Syntax error on line 31 of /etc/httpd/conf.d/olddomain.conf: RewriteCond: bad argument line '%{REQUEST_URI}!^/test/ I have of course renamed the real config parameters. Can somebody tell me if these directives only work in apache-2.4 and if so how do I do the same thing in apache-2.2? If these directives should work in apache-2.2 is this an apache problem? Thanks for your help. -- Paul (ganci(a)nurdog.com) Cell: (303)257-5208

4 7

what multimedia framework does Centos use
by qw 29 May '16

29 May '16

Hi, My question is : what multimedia framework does Centos use for server purpose? Thanks! B.R. Andrew

3 5

Looking for location of some specific settings in CentOS 6.x
by Walter H. 28 May '16

28 May '16

Hello, I have several virtual machines, all with CentOS 6.x and one so called virtual server at a web hoster my virtual machines (VMware) were all installed manually using the .iso, some exist longer and therefore were originally a CentOS 6.3, some are newer and wer originally a CentOS 6.6; and this virtual server has been installed using a preconfigured image from the web hoster; on all this virtual machines and the virtual server several 'yum update' brought them to same release, not CentOS 6.7, as I havn't updated to 6.8 yet; at the virtual server I find this export LS_OPTIONS="--human --color=always" alias ls='ls $LS_OPTIONS' alias ll='ls $LS_OPTIONS -l' alias l='ls $LS_OPTIONS -Al' in /root/.bashrc on my virtual machines I can't find this settings; nor doesn't 'env' show a variable 'LS_OPTIONS' but 'alias' shows this: alias cp='cp -i' alias l.='ls -d .* --color=auto' alias ll='ls -l --color=auto' alias ls='ls --color=auto' alias mv='mv -i' alias rm='rm -i' alias which='alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde' the aliases for cp, mv, rm are explained by the first part of /root/.bashrc (not quoted above) alias rm='rm -i' alias cp='cp -i' alias mv='mv -i' when I comment out the above shown part of /root/.bashrc on the virtual server 'alias' shows the same as on my virtual machines (VMware) but where are these aliases alias l.='ls -d .* --color=auto' alias ll='ls -l --color=auto' alias ls='ls --color=auto' alias which='alias | /usr/bin/which --tty-only --read-alias --show-dot --show-tilde' set? Thanks for help, Walter

2 1

Fail to load kernel module ipmi_si on CentOS-6
by Frank Yu 28 May '16

28 May '16

Hi all, I am trying to load kernel module ipmi_si, while failed with error "No such device", truth is I can find file in ../kernel/drivers/char/ipmi/ipmi_si.ko. So why I can't load it? Steps: # ls -l /lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/char/ipmi/ipmi_si.ko -rwxr--r--. 1 root root 93080 Jul 23 2015 /lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/char/ipmi/ipmi_si.ko # modprobe ipmi_si FATAL: Error inserting ipmi_si (/lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/char/ipmi/ipmi_si.ko): No such device # lsmod |grep ipmi ipmi_devintf 7729 0 ipmi_poweroff 8532 0 ipmi_watchdog 17874 0 ipmi_msghandler 38701 3 ipmi_devintf,ipmi_poweroff,ipmi_watchdog # ipmitool Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No such file or directory What should I do if I want to setup IPMI on my centos host? -- Regards Frank Yu

3 3

Systemd and VirtualBox
by Rob Kampen 28 May '16

28 May '16

The continuing challenges of getting a workable server continue. The latest spins of VirtualBox seem to have solved the issues of DKMS auto compiles of the driver being aborted. The yum updates work as expected, provided one stops the running vms manually first. However, trying to get systemd to start the vms is proving to be a PITA. I have extensively googled and found that there are no specific instructions for Fedora/Redhat/CentOS and VirtualBox setups for systemd. After many trials and errors I have this systemd service file: filename - /etc/systemd/system/vboxstarter@.service [Unit] Description=VBox Virtual Machine %i Service Requires=systemd-modules-load.service vboxballoonctrl-service.service After=systemd-modules-load.service vboxballoonctrl-service.service Conflicts=shutdown.target [Service] User=<username> Group=vboxusers Restart=on-failure TimeoutSec=5min Environment="VBOX_USER_HOME=/home/rkampen/VirtualBox VMs/%i" ExecStart=/usr/bin/VBoxHeadless -s %i ExecStop=/usr/bin/VBoxManage controlvm %i savestate [Install] WantedBy=multi-user.target and on occasions the invocation systemctl start vboxvmstarter(a)Windoze10_2.service will work, although recently it is failing always with >$ systemctl status vboxvmstarter(a)Windoze10_2.service ● vboxvmstarter(a)Windoze10_2.service - VBox Virtual Machine Windoze10_2 Service Loaded: loaded (/etc/systemd/system/vboxvmstarter@.service; enabled; vendor preset: disabled) Active: deactivating (stop-sigterm) (Result: exit-code) since Tue 2016-05-17 03:25:02 EDT; 4s ago Process: 1987 ExecStop=/usr/bin/VBoxManage controlvm %i savestate (code=exited, status=1/FAILURE) Process: 1906 ExecStart=/usr/bin/VBoxHeadless -s %i (code=exited, status=1/FAILURE) Main PID: 1906 (code=exited, status=1/FAILURE) CGroup: /system.slice/system-vboxvmstarter.slice/vboxvmstarter(a)Windoze10_2.service └─1940 /usr/lib/virtualbox/VBoxSVC --auto-shutdown May 17 03:25:02 media.pcol.org systemd[1]: Started VBox Virtual Machine Windoze10_2 Service. May 17 03:25:02 media.pcol.org systemd[1]: Starting VBox Virtual Machine Windoze10_2 Service... May 17 03:25:02 media.pcol.org systemd[1]: vboxvmstarter(a)Windoze10_2.service: main process exited, code=exited, status=1/FAILURE May 17 03:25:02 media.pcol.org VBoxManage[1987]: VBoxManage: error: Could not find a registered machine named 'Windoze10_2' May 17 03:25:02 media.pcol.org VBoxManage[1987]: VBoxManage: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), com...pports May 17 03:25:02 media.pcol.org VBoxManage[1987]: VBoxManage: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.a...VM.cpp May 17 03:25:02 media.pcol.org systemd[1]: vboxvmstarter(a)Windoze10_2.service: control process exited, code=exited status=1 Hint: Some lines were ellipsized, use -l to show in full. as <username> a vboxmanage list vms "Windoze10_2" {51c8f956-9aba-4d2a-942c-8f46889d5bc0} shows the required vm. as root or using sudo it returns nothing. thus my only conclusion is that systemd actually runs this as root and ignores the User= line of the [Service] stanza. No idea where to from here, so if there is anyone that has a working systemd autostart VirtualBox setup on a headless CentOS 7 server - please advise what you have done to get it working. Or any systemd gurus that can point me at the specific foo required to beat this deamon into submission. TIA Rob P.S. I deliberately set up the VirtualBox vms under a non privileged user account. I have tried setting up a symbolic link from /root to the ~/username/VirtualBox\ VMs folder and made root a member of the virtualboxusers group - no difference, as expected, but getting desperate.

14 26

Continuous Release repository RPMs now released
by Johnny Hughes 27 May '16

27 May '16

The Continuous Release repository RPMs for CentOS-6.8 are now released. It includes the following releases: https://lists.centos.org/pipermail/centos-cr-announce/2016-May/thread.html Specifically, there are following Security Updates included: CESA-2016:0996 Important CentOS 6 openssl Security Update CESA-2016:0997 Important CentOS 6 qemu-kvm Security Update CESA-2016:1041 Important CentOS 6 thunderbird Security Update CESA-2016:0760 Moderate CentOS 6 file Security Update CESA-2016:0778 Moderate CentOS 6 icedtea-web Security Update CESA-2016:0855 Moderate CentOS 6 kernel Security Update CESA-2016:0780 Moderate CentOS 6 ntp Security Update CESA-2016:0741 Moderate CentOS 6 openssh Security Update As well as more than 300 other bug fix updates. Please read the CentOS-6.8 Release Notes: https://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.8 As well as the RHEL-6.8 release notes and technical notes (since CentOS-6.8 is based on the RHEL-6.8 source code): Release Notes: http://red.ht/1WBF3u4 Technical Notes: http://red.ht/1YwcEDI If you do not want to install the CR repository, the full 6.8 release should happen around 10-21 days from today. For more information on the CR repository, see this link: https://wiki.centos.org/AdditionalResources/Repositories/CR Thanks, Johnny Hughes

3 4

Re: [CentOS] ipmitool and CentOS 7
by m.roth＠5-cent.us 27 May '16

27 May '16

---------------------------- Original Message ---------------------------- Subject: ipmitool and CentOS 7 From: m.roth(a)5-cent.us Date: Mon, May 16, 2016 16:57 To: "CentOS" <centos(a)centos.org> -------------------------------------------------------------------------- On Dells running CentOS 6, we could use this command ipmitool delloem lcd set mode userdefined "$(uname -n | sed -e 's/\..*//' )" to set the little LCD screen to display the system name, In the latest sevens, it fails, and gives me usage for the command... which displays exactly that syntax. Anyone have a clue? --------------------------- Following myself up: it worked 100% of the time on CentOS 7 on dells. On CentOS 7, the whole set of delloem appear to fail. For example, ipmitool delloem lcd info produces "LCD info", rather than the service tag that it comes from Dell displaying. All variants I try to set it produce a list of usage options for ipmitool delloem lcd. I'm starting to think that the delloem is broken; either it's ipmitool, or A side note, for the person who suggested uname -s - that produces Linux. -n produces the FQDN. mark

3 2

Re: [CentOS] dnf replacing yum?
by James B. Byrne 27 May '16

27 May '16

On Thu, May 26, 2016 10:51, Juan Bernhard wrote: > > El 26/05/2016 a las 11:39 a.m., Valeri Galtsev escribió: >> I guess, it is just me in general unhappy about all Linuxes >> getting much less "UNIX"y lately. > > I feel you Valerei, im switching new server instalations to FreeBSD. > Im tired to spend useful time learning new ways (systemd, firewalld, > dnf, etc) to do the same old sh*t. > > We are doing exactly the same thing and for the same reasons. We have been running RH or its derivatives since 1998 but now it is time for us to move on. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

2 1

Redefine ethX interface names in CentOS 5.11?
by Nicolas Kovacs 27 May '16

27 May '16

Hi, I have a LAN server running CentOS 5.11 with two NICs eth0 and eth1. I'd like to swap the interface names, but I don't know how to go about that under CentOS. Here's what I would do on a Slackware server (I have one next to me in my office). Open /etc/udev/rules.d/70-persistent-net.rules and edit it: # PCI device 0x8086:/sys/devices/pci0000:00/0000:00:04.0/0000:03:00.0 (e1000e) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:22:64:8a:4c:c2", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" # PCI device 0x8086:/sys/devices/pci0000:00/0000:00:02.0/0000:02:00.0 (e1000e) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="2c:27:d7:15:54:a1", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" To swap interfaces, I simply have to switch the respective NAME="ethX" attributes and restart the server. How would you do something similar on a machine running CentOS 5.11? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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Re: [CentOS] [SOLVED] Kernel panic on 6.8 release with kernel-2.6.32-642.el6.x86_64
by Sorin Srbu 27 May '16

27 May '16

> -----Original Message----- > From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > Behalf Of Sorin Srbu > Sent: den 27 maj 2016 07:43 > To: CentOS mailing list <centos(a)centos.org> > Subject: Re: [CentOS] Kernel panic on 6.8 release with kernel-2.6.32- > 642.el6.x86_64 > > > > Uninstalled NFS, as it wasn't needed anyway. > > > > > > Still got the panic. > > > > Seriously, what panic? > > The one I posted a screen dump of earlier. Did some more digging this morning. All physical machines are quite okay with the 6.8 upgrade. All virtual machines running on Hyper-V get a kernel panic - if the linux integration services (lis) are installed on the guest. Uninstalling lis, then applying the kernel-2.6.32-642.el6.x86_64 and rebooting works just fine. No kernel panics. Supposedly (according to some forum posts I read) the lis shouldn't care what kernel is actually running, as long as it is compiled with a kernel that is installed and available on the system, in this case the last previous before the 6.8-upgrade. In any case, problem solved for now. Thanks for all the feedback! Marking thread as solved. -- //Sorin

1 0

Recommendations for Infiniband with CentOS 6.7
by Pat Haley 26 May '16

26 May '16

Hi All, We looking for suggestions on dealing with mellanox drivers in CentOS 6.7 We tried installing mellanox drivers (MLNX_OFED_LINUX-3.2-2.0.0.0-rhel6.7-x86_64) on a Quanta Cirrascale server running Centos 6.7 - 2.6.32-573.22.1.el6.x86_64. When we rebooted the machine after installing the drivers, it went into a kernel panic for every installed kernel except for Centos 6.7 2.6.32-573.22.1.el6.x86_64.debug. After we uninstalled the drivers, the machine failed to boot for any installed kernel. Any suggestions on how to proceed would be greatly appreciated. Thanks -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Pat Haley Email: phaley(a)mit.edu Center for Ocean Engineering Phone: (617) 253-6824 Dept. of Mechanical Engineering Fax: (617) 253-8125 MIT, Room 5-213 http://web.mit.edu/phaley/www/ 77 Massachusetts Avenue Cambridge, MA 02139-4301

4 6

centos7 tmpfiles.d deleted outdate files
by Qiang Chen 26 May '16

26 May '16

Hi all, I use centos7 and don't want to use tmpwatch as well as crond. I have a question to use `systemd-tmpfiles-clean.service` with my custom configured file in `tmpfiles.d` to delete outdated files periodically in some log dir. I have a `tmpfiles.d` configured file in `/etc/tmpfiles.d` named `my_log.conf` in following contents. ``` #Type Path Mode UID GID Age Arg r /chenqiang 0775 root root 10s r /chenqiang/test_10s r /chenqiang/test_20s ``` If I run `systemd-tmpfiles --remove` with above configure, all files and dir will be deleted if I set 'r' type for the files and dir. but, I want to only delete some outdated files in the dir. and I use `systemd-tmpfiles --clean` with following configure. ``` #Type Path Mode UID GID Age Arg d /chenqiang 0775 root root 10s f /chenqiang/test_10s 0660 root root 10s f /chenqiang/test_20s 0660 root root 20s ``` It can delete dir if the age > 10s, but can't delete the files in it. So, would some one help me if I want to delete the outdated files ? -- Best Regards, Chen, Qiang

3 3

Re: [CentOS] dnf replacing yum?
by Timothy Murphy 26 May '16

26 May '16

Kenneth Porter wrote: > I saw mention of dnf in a blog article about installing a package on > CentOS. Further investigation revealed that Fedora is replacing yum with > dnf, apparently a new and better yum. But it wasn't clear if dnf was a For the normal user (like me) dnf is neither better nor worse than yum. In fact it is almost identical. In my view, the introduction of a new name was completely unnecessary and the cause of the only (small) complication with the changeover, eg should I look in /etc/yum.repos.d/ or /etc/dnf.repos.d/ ? Also, yum had associations which it was sad to lose. -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

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CentOS-announce Digest, Vol 135, Issue 10
by centos-announce-request＠centos.org 26 May '16

26 May '16

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. Release for CentOS Linux 6.8 i386 and x86_64 (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 25 May 2016 11:04:19 -0500 From: Johnny Hughes <johnny(a)centos.org> To: CentOS-Announce <centos-announce(a)centos.org> Subject: [CentOS-announce] Release for CentOS Linux 6.8 i386 and x86_64 Message-ID: <5745CD03.20409(a)centos.org> Content-Type: text/plain; charset="utf-8" We are pleased to announce the immediate availability of CentOS Linux 6.8 and install media for i386 and x86_64 Architectures. Release Notes for 6.8 are available at: http://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.8 We recommend everyone review these release notes. CentOS Linux 6.8 is derived from source code released by Red Hat, Inc. for Red Hat Enterprise Linux 6.8. All upstream variants have been placed into one combined repository to make it easier for end users. Workstation, server, and minimal installs can all be done from our combined repository. All of our testing is only done against this combined distribution. There are many fundamental changes in this release, compared with the past CentOS Linux 6 releases, and we highly recommend everyone study the upstream Release Notes as well as the upstream Technical Notes about the changes and how they might impact your installation. (See the 'Further Reading' section if the CentOS release notes link above). All updates since the upstream 6.8 release are also on the CentOS mirrors as zero day updates. When installing CentOS-6.8 (or any other version) from any of our media, you should always run 'yum update' after the install to apply these. Users consuming our centos-cr repositories will already be running all the packages that make up CentOS-6.8, and all updates released since. They will notice only the centos-release and anaconda updates today when moving to CentOS Linux 6.8. For more information on the CR repository for future updates, see this link: http://wiki.centos.org/AdditionalResources/Repositories/CR Release Announcements for all updated packages are available here: http://bit.ly/1WOy3dB +++++++++++++++++++++++ Upgrading From Prior Major CentOS Versions: We recommend everyone perform a fresh reinstall rather than attempt an inplace upgrade from other major CentOS versions (CentOS-2.1, CentOS-3.x, CentOS-4.x, CentOS-5.x). +++++++++++++++++++++++ Upgrading from CentOS-6.0 / 6.1 / 6.2 / 6.3 / 6.4 / 6.5 / 6.6 or 6.7 CentOS Linux is designed to automatically upgrade between releases within a major version (in this case, CentOS-6). Unless you have edited your yum default configuration, a 'yum update' should move your machines seamlessly from any previous CentOS Linux 6.x release to 6.8. We also test this in our QA cycles and have noticed no problems, any issues would be mentioned in the Release Notes. +++++++++++++++++++++++ Downloading CentOS Linux 6.8 for new installs: When possible, consider using torrents to obtain our ISOs. Usually it is also the fastest means to download the distro. The install media is split into various formats. We have made efforts to ensure that most install types and roles can be done from DVD-1 itself, and the minimal install ISO is only tested to deliver a minimal install set, when used as an ISO format ( either on cd or usb ). While other forms of installs ( eg. pxe delivered ) might work from the minimal ISO, they are neither tested not supported. The only format where we support the entire set of install options and delivery mechanisms is via the complete CentOS Linux 6.8 tree, wihch can also be created by consolidating all content from DVD1 and DVD2. We no longer produce CD size images for the entire CentOS Linux 6 distribution, however the minimal install and netinstall iso images are small enough to fit on all CD grade media. Torrent files for the DVD's are available at : http://mirror.centos.org/centos/6.8/isos/i386/CentOS-6.8-i386-bin-DVD1to2.t… http://mirror.centos.org/centos/6.8/isos/x86_64/CentOS-6.8-x86_64-bin-DVD1t… You can also use a mirror close to you to get any of our ISOs: http://mirror.centos.org/centos/6.8/isos/ If you need to update a local mirror, you can choose from our mirror network http://www.centos.org/download/mirrors/ Most mirrors will allow downloads over http, ftp and rsync. Note: The x86_64 ISOs (minimal, netinstall, DVD1) should install on UEFI machines. Secure Boot must be disabled to install CentOS 6. The Live ISOs and i386 ISOs will not boot with UEFI. +++++++++++++++++++++++ sha256sum for the CentOS-6.8 ISOS: i386: 720d185fdf063383a4471657076b72fc162d3c3c3bca2e5e5ae13a25b3046519 CentOS-6.8-i386-bin-DVD1.iso 0c1a498a469214f276b4390a9ac2111fe8eb89084f7921d2eced659ada09e1a9 CentOS-6.8-i386-bin-DVD2.iso 7df6c27c0cd1186845bee4e786d43dbd3ae429258098283f9dbc2b2d20ed6a89 CentOS-6.8-i386-LiveCD.iso 7e2ace104901921ac919a390be827251727dfd04437fbd4e4d3024b6d70d8718 CentOS-6.8-i386-LiveDVD.iso f4cf0614cc2ac451ffec5bd349ee74a1b31fd394e58561a07c38a21be5a4bdeb CentOS-6.8-i386-minimal.iso 1668434d76e14a45a189b7810582e7e6ded686854f75b7f8ba053830a5706e57 CentOS-6.8-i386-netinstall.iso x86_64: dda55622614a8b43b448a72f87d6cb7f79de1eff49ee8c5881a7d9db28d4e35 CentOS-6.8-x86_64-bin-DVD1.iso 0aba869427b4ce04e100d72744daf7fea1f7be2e4be56b658095bd9e99e04e6d CentOS-6.8-x86_64-bin-DVD2.iso efa82d673206cb6af377b1f929a510cc2b1ce95cdb436210121ec271e056c920 CentOS-6.8-x86_64-LiveCD.iso 52a9c8c1d250de39976dda9412293473b8349efefb31b66fecdee0fdf93866d9 CentOS-6.8-x86_64-LiveDVD.iso ec49c297d484b9da0787e5944edc38f7c70f21c0f6a60178d8e9a8926d1949f4 CentOS-6.8-x86_64-minimal.iso 56d9cc5757ed1443af7b321967622a108978328f72e58050d31bcf1998dfd162 CentOS-6.8-x86_64-netinstall.iso +++++++++++++++++++++++ Cloud Images: Images for various on-premise and off-premise Cloud environments are currently under development for CentOS Linux 6.8 and will be released in the coming days. Everyone looking to join and help with the CentOS Cloud efforts is encouraged to join the CentOS-devel list where such issues are discussed ( http://lists.centos.org/mailman/listinfo/centos-devel ). +++++++++++++++++++++++ Getting Help: The best place to start when looking for help with CentOS is at the wiki ( http://wiki.centos.org/GettingHelp ) which lists various options and communities who might be able to help. If you think there is a bug in the system, do report it at http://bugs.centos.org/ - but keep in mind that the bugs system is *not* a support mechanism. If you need supported software with Support Level Agreements, people to call and response times then we recommend Red Hat Enterprise Linux. If you have questions you would like to field at us in real time, come join the office hours on Wed or Thu of every week. You can find details on these at http://wiki.centos.org/OfficeHours +++++++++++++++++++++++ Meet-ups and Events: If you would like to get involved in helping organize, run, present or sponsor a CentOS Dojo or even just want more details then join the CentOS Promo list: http://lists.centos.org/mailman/listinfo/centos-promo and drop an email introducing yourself. We are very keen to find help to run events around the world, and also to find people who can represent CentOS at various community events around the world. +++++++++++++++++++++++ Contributing and joining the project: We are always looking for people to join and help with various things in the project. If you are keen to help out a good place to start is the wiki page at http://wiki.centos.org/Contribute . If you have questions or a specific area you would like to contribute towards that is not covered on that page, feel free to drop in on #centos-devel at irc.freenode.net for a chat or email the centos-devel list (http://lists.centos.org) +++++++++++++++++++++++ Thanks to everyone who contributed towards making CentOS Linux 6.8, especially the effort put in, as always, by the QA (http://wiki.centos.org/QaGroup) and Build teams. A special shout out to all the donors who have contributed hardware, network connectivity, hosting and resources over the years. The CentOS project now has a fairly well setup resource pool, solely thanks to the donors. Enjoy! -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS

1 0

centos7 tmpfiles.d deleted outdate files
by Qiang Chen 26 May '16

26 May '16

Hi all, I use centos7 and don't want to use tmpwatch as well as crond. I have a question to use `systemd-tmpfiles-clean.service` with my custom configured file in `tmpfiles.d` to delete outdated files periodically in some log dir. I have a `tmpfiles.d` configured file in `/etc/tmpfiles.d` named `my_log.conf` in following contents. ``` #Type Path Mode UID GID Age Arg r /chenqiang 0775 root root 10s r /chenqiang/test_10s r /chenqiang/test_20s ``` If I run `systemd-tmpfiles --remove` with above configure, all files and dir will be deleted if I set 'r' type for the files and dir. but, I want to only delete some outdated files in the dir. and I use `systemd-tmpfiles --clean` with following configure. ``` #Type Path Mode UID GID Age Arg d /chenqiang 0775 root root 10s f /chenqiang/test_10s 0660 root root 10s f /chenqiang/test_20s 0660 root root 20s ``` It can delete dir if the age > 10s, but can't delete the files in it. So, would some one help me if I want to delete the outdated files ? -- Best Regards, Chen, Qiang

1 0

Re: [CentOS] Question on 7.2 and weird characters [solved]
by Jerry Geis 26 May '16

26 May '16

On Mon, May 23, 2016 at 3:09 PM, Jerry Geis <geisj(a)pagestation.com> wrote: > When I run this command: > rm /tmp/jerry.txt > rm: remove regular file â/tmp/jerry.txtâ? > > I get the a with the carrot on top... > > How do I get back to the normal characters ? > > echo $TERM > linux > > Thanks, > > Jerry > thanks for the pointers... It was in fact the putty settings. Under Translation I needed to select UTF-8. All is good. Thanks again. Jerry

1 0

dnf replacing yum?
by Kenneth Porter 25 May '16

25 May '16

I saw mention of dnf in a blog article about installing a package on CentOS. Further investigation revealed that Fedora is replacing yum with dnf, apparently a new and better yum. But it wasn't clear if dnf was a drop-in replacement or if some migration setup was required. Is it supposed to work with CentOS or do we ignore it until some future release? <https://www.linux.com/learn/what-you-need-know-about-fedoras-switch-yum-dnf> I installed dnf with yum and tried installing another package with it and it complains: [root@orifice ~]# dnf install certbot Failed to open: /var/cache/dnf/x86_64/7/x86_64/7/epel/repodata/b3221500eaedf45b7ec0737a410cde7e3f09b49070c729449938b961ccbdf397-updateinfo.xml.bz2. I don't install new packages often, but it does sound like dnf's new dep solver is a Good Thing when that's needed.

2 1

CentOS 7 + GUI as KVM guest: fix screen resolution
by Nicolas Kovacs 25 May '16

25 May '16

Hi, I'd like to run CentOS 7 in a KVM guest (host is my Slackware64 14.1 workstation). The main purpose of this installation will be to build custom RPM packages. I've made a few tests, and everything works more or less as expected. I'd like to resolve a small problem that's nagging me though. When I install a GUI, I usually start by installing a minimal system, then I add some command-line tools, then the X Window System, then I add a lightweight window manager like WindowMaker to configure X, and then only I install GNOME, the base desktop and only the applications I need. So far this works quite well. I just made a first installation of CentOS + X11 + WindowMaker in a KVM guest, and I have some small resolution problems. I have a twin-monitor setup, with the left 19" monitor displaying the host system, and the right 19" monitor the guest system. The "ideal" resolution for this type of monitor is 1280x1024. Now when I start WindowMaker in the guest system, I get a weird resolution, something like 1024x600: looks like 1024x768, only it gets squashed down to what looks like 16/9. The top and bottom borders of the screen are black, a bit like a cinemascope movie. Now I tried to make a second "vanilla" installation of CentOS in another KVM guest. This time I installed the default GNOME GUI. After the initial reboot, GDM has the same weird resolution (1024x600 I guess), and GNOME starts up with this same resolution also. BUT: I can go to the Monitor Settings, and define 1280x1024 as resolution, and this works perfectly. Unfortunately this solution only seems to work on a per-user basis, and only in GNOME. So here's my question: - How did GNOME do that (redefine my monitor resolution on the fly)? - Is there a way to achieve this new resolution system-wide, and also for WindowMaker? I tried to fiddle a bit with xorg.conf (X -configure, copy it over, edit it), but to no avail. Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

1 1

CentOS 7, container question
by m.roth＠5-cent.us 25 May '16

25 May '16

Hi, folks, We would like to run a container on a server, the reason being the COST of a Sybase license (it's by core), and what we can afford is a 4-core license. Now, the server's a nice Dell w/ 32 cores, so, ideally, what we want to do is set up containers, then, in one container, *only* have it see 4 cores, while the rest of the server, including (possibly) other containers, can see the other 28. The first try seems to have disabled *all* the cores other than those four. Is it possible to do what we want, and if so, some pointers would be most appreciated. mark

7 10

Re: [CentOS] Hard drives being renamed
by Miguel Medalha 25 May '16

25 May '16

>> I've run into this with ZFS on Linux. The 'blkid' is useful to identify the >> target device and then add that to your fstab. I don't use device names >> at all anymore, too ambiguous (depending on the circumstance) in my >> opinion. Right. And there are other ways to identify disks unequivocally. Under CentOS, for example, I find the following directories: /dev/disk/by-id /dev/disk/by-path /dev/disk/by-uuid Each one has its optimal use case. It seems to me that in general the ideal would be to use the WWN identifier, which now comes printed on the disk label sticker and uniquely identifies the disk, offering a clear correspondence between physical and logical disks. Under CentOS, the WWN ID of detected disks can be found under /dev/disk/by-id. WWN stands for "World Wide Name". There's a Wikipedia article about it here: https://en.wikipedia.org/wiki/World_Wide_Name "hdparm - I" or even "smartctl -a" will show which /dev/sdX or whatever corresponds to which WWN or other relatively stable ID types. The advantage of WWN is that the ID won't change if you connect the disk to a different controller, for example from a SAS one to a SATA one. In one of my servers, if I unplug a SATA disk from a LSI-Avago SAS controller and I connect it to a Intel onboard SATA controller the ID changes from "scsi-idnumber" to "ata-brand-model-serialnumber" but the WWN remains constant.

1 0

Hard drives being renamed
by Pat Haley 24 May '16

24 May '16

Hi, We are running Centos 6.7 - 2.6.32-573.22.1.el6.x86_64 on a Quanta Cirrascale, up to date with patches. We have had a couple of instances in which the hard drives have become renamed after reboot (e.g. drive sda is renamed to sdc after reboot). One time this occurred when we rebooted following the installation of a 10GB NIC card, another time after we tried to install mellanox drivers (MLNX_OFED_LINUX-3.2-2.0.0.0-rhel6.7-x86_64). Currently we are unable to boot because that drive has been renamed. Our questions are * Has anyone else experienced similar issues? * What can we do to prevent such renaming in the future -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Pat Haley Email: phaley(a)mit.edu Center for Ocean Engineering Phone: (617) 253-6824 Dept. of Mechanical Engineering Fax: (617) 253-8125 MIT, Room 5-213 http://web.mit.edu/phaley/www/ 77 Massachusetts Avenue Cambridge, MA 02139-4301

6 5

Question on 7.2 and weird characters
by Jerry Geis 24 May '16

24 May '16

When I run this command: rm /tmp/jerry.txt rm: remove regular file â/tmp/jerry.txtâ? I get the a with the carrot on top... How do I get back to the normal characters ? echo $TERM linux Thanks, Jerry

5 4

/etc/sysconfig/iptables syntax
by Mike 23 May '16

23 May '16

The last two router/firewall servers I had used Slackware and Gentoo. I'm used to writing complete and explicit iptables rules; however, when I set up /etc/sysconfig/iptables in CentOS 7 my usual syntax is unusable. For example, I'm used to stating postrouting masquerade as: /usr/sbin/iptables -t nat -A POSTROUTING -o eth0 -s 10.10.10.0/24 -j MASQUERADE But when I use the rule above, iptables.service fails upon start and exits. Through a series of trial and error, I found a correct masquerade statement: *nat -A POSTROUTING -o eth0 -s 10.10.10.0/24 -j MASQUERADE COMMIT This looks similar to output from iptables-save. Another example: /usr/sbin/iptables -t filter -A FORWARD -i eth0 -s 192.168.0.0/16 -j DROP [DOES NOT WORK] *filter -A FORWARD -i eth0 -s 192.168.0.0/16 -j DROP COMMIT [DOES WORK] After using iptables for a long time, I can't figure out where this syntax comes from. Can anyone point me in the right direction to understand the proper syntax necessary in /etc/sysconfig/iptables? Thanks for your help.

5 8

Badlock bad luck
by Bob Smith 23 May '16

23 May '16

I had exactly the same problem. Your workaround fixed me too. With the new samba packages my samba\logs are full of errors. If I temporarily disconnected the PC client NIC cable, and logged into the domain using cached credentials, then I could get past the problem. But, you helped me greatly with this posting. I wasted hours checking Windows updates - useless. We still need the new configuration settings for our conf file to workaround this problem. Bob Smith bobsmith at dbata dot com >* Am 13.04.2016 um 07:51 schrieb Mogens Kjaer <mk at lemo.dk <https://lists.centos.org/mailman/listinfo/centos>>: *> >* Hello, *> >* I run a CentOS 6 machine with samba, serving approx. 150 Windows users with samba running as an NT-like PDC. *> >* After today's samba update (samba-3.6.23-30.el6_7.x86_64 etc.), nobody can log in. *> >* They all get the "Trust relationship failed" error message. *> >* If I downgrade: *> >* yum downgrade samba-common samba-winbind samba-winbind-clients samba-client samba samba-doc samba-domainjoin-gui libsmbclient *> >* - the problem goes away. *> >* What am I missing? *> >* Mogens *> >* -- *>* Mogens Kjaer, mk at lemo.dk <https://lists.centos.org/mailman/listinfo/centos> *>* http://www.lemo.dk <http://www.lemo.dk> *>* _______________________________________________ *>* CentOS mailing list *>* CentOS at centos.org <https://lists.centos.org/mailman/listinfo/centos> *>* https://lists.centos.org/mailman/listinfo/centos <https://lists.centos.org/mailman/listinfo/centos> *

3 2

Re: [CentOS] /etc/sysconfig/iptables syntax
by Barak Korren 23 May '16

23 May '16

בתאריך 23 במאי 2016 05:56,‏ "Mike" <1100100(a)gmail.com> כתב: > > > After using iptables for a long time, I can't figure out where this syntax > comes from. > Can anyone point me in the right direction to understand the proper syntax > necessary in /etc/sysconfig/iptables? > The syntax comes from the output of the 'iptables-save' command. You can configure 'iptables' from the command line as you normally would and then run iptables-save > /etc/sysconfig/iptables On centos<=6 the init.d script also included a 'save' command to do it for you, I'm not sure about the systemd unit file though. HTH, Barak _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > https://lists.centos.org/mailman/listinfo/centos

2 3

Centos 7.2: Mount one by one (not simultaneously!) two usb disk with same label
by Dario Lesca 23 May '16

23 May '16

For backup, I have 2 usb disk with same label (LABEL=bove-bk) mounted periodically one by one (not simultaneously!) in the same folder /mnt/bove-bk/ > [root@s-virt ~]# grep bove-bk /etc/fstab > LABEL="bove-bk" /mnt/bove-bk xfs defaults,nofail 0 0 With Centos 5/6 this has never given problems, now with c7 when I unmount and unplug the first disk and I plug and mount the second I get this message log and the disk is not mounted: > [root@s-virt ~]# mount -a > mag 18 10:18:20 s-virt.bove.local kernel: XFS (sdd2): Mounting V4 Filesystem > mag 18 10:18:21 s-virt.bove.local kernel: XFS (sdd2): Ending clean mount > [root@s-virt ~]# mag 18 10:18:21 s-virt.bove.local systemd[1]: Unit mnt-bove\x2dbk.mount is bound to inactive unit dev-disk-by\x2dlabel-bove\x2dbk.device. Stopping, too. > mag 18 10:18:21 s-virt.bove.local systemd[1]: Unmounting /mnt/bove-bk... > mag 18 10:18:21 s-virt.bove.local kernel: XFS (sdd2): Unmounting Filesystem > mag 18 10:18:21 s-virt.bove.local systemd[1]: Unmounted /mnt/bove-bk. In every way that I try to mount the disk (by UUID, into another folder, using the device, ecc), always systemd Unmount my disk. After some research I have found that by running these commands: > [root@s-virt ~]# journalctl -f & > [root@s-virt ~]# udevadm control --reload > [root@s-virt ~]# systemctl daemon-reload > mag 18 10:28:31 s-virt.bove.local polkitd[1035]: Registered Authentication Agent for unix-process:25607:464417949 (system bus name :1.18421 [/usr/bin/pkttyagent --notify-fd 5 --fallback], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale it_IT.utf8) > mag 18 10:28:31 s-virt.bove.local systemd[1]: Reloading. > mag 18 10:28:31 s-virt.bove.local systemd[1]: [/usr/lib/systemd/system/firstboot-graphical.service:14] Support for option SysVStartPriority= has been removed and it is ignored > mag 18 10:28:31 s-virt.bove.local systemd[1]: Configuration file /usr/lib/systemd/system/auditd.service is marked world-inaccessible. This has no effect as configuration data is accessible via APIs without restrictions. Proceeding anyway. > mag 18 10:28:31 s-virt.bove.local systemd[1]: Configuration file /usr/lib/systemd/system/wpa_supplicant.service is marked executable. Please remove executable permission bits. Proceeding anyway. > mag 18 10:28:31 s-virt.bove.local polkitd[1035]: Unregistered Authentication Agent for unix-process:25607:464417949 (system bus name :1.18421, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale it_IT.utf8) (disconnected from bus) the mount of second disk work property > [root@s-virt ~]# mount -a > mag 18 10:28:36 s-virt.bove.local kernel: XFS (sdd2): Mounting V4 Filesystem > mag 18 10:28:37 s-virt.bove.local kernel: XFS (sdd2): Ending clean > mount[root@s-virt ~]# It's possible resolve this annoying issue and restore old c5/6 behavior to allow a normal user to substitute the disks from graphical console? Many thanks. -- Dario Lesca (inviato dal mio Linux Fedora 23 Workstation)

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Re: [CentOS] Upcoming OwnCloud changes
by Chuck Munro 23 May '16

23 May '16

Just a FYI folks ... I am running OwnCloud 9.0.2 on CentOS 6.7 and php-7.0 with no issues. I installed the Webtatic repo which has several versions of PHP available for CentOS 6 and 7. I then used the official OwnCloud ce:stable repo to add the cloud software. In a leap of faith, and because this CentOS VM doesn't run anything other than OwnCloud, I used the 'php70w' PHP repo and have had no problems at all. The OwnCloud server is very lightly loaded so I have not had an opportunity to stress test it and have not tried to use MySQL (I configured it with the standard CentOS SQLite). YMMV of course, especially if you're running other PHP applications! Chuck

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devtoolset-4
by Jarosław Bober 22 May '16

22 May '16

Hello, my name is Jarek I am new here. I need some clarifications on how to distribute an app developed with devtoolset-4 enabled. I am developing a distributed app in c++ I wanted to upgrade toolchain to use new standard. Is it true that when I compile on centos 6.x with devtoolset enabled then I will be able to run this app on centos 7.x as well? Do I have to install devtoolset on all my machines that I want to run this app? Or would it use built-in libstdc++ library, linking statically only the missing parts? This confuses me a bit. Regards, -Jarek

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