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CentOS 7 and network printers: FYI
by m.roth＠5-cent.us 01 Feb '16

01 Feb '16

I got an email from a user that I'd just handed a new CentOS 7 workstation to, wondering where all the printers were. It took some investigation to find /etc/cups/cups-browsed.conf, and see, in it, at the very bottom of the file: # NOTE: This file is not part of CUPS. You need to start & enable cups-browsed service. Which appears to be brand new with 7, and I have not seen any mention of it. Enabled and started, and the network printers are visible on the cups localhost web page->printers. mark

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Re: [CentOS] NICs order
by Ricardo J. Barberis 01 Feb '16

01 Feb '16

El Lunes 01/02/2016, Daniel Ruiz Molina escribió: > Hi, > > After installing CentOS 7 in a server with 2 NICs, system detects eth0 > and eth1 in reserve order. I would like to have eth1 as eth0 and eth0 as > eth1. I have forced HWADDR attribute in > /etc/sysconfig/network-scripts/ifcfg-etc{0,1}, but after rebooting, > order is the same... > > How can I solve it? > > Thanks. You could put the MAC addresses in /etc/udev/rules.d/60-net.rules, e.g.: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="11:22:33:aa:bb:cc", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="44:55:66:dd:ee:ff", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" But that never worked reliably for me, no matter what I tried. In the end I had to use different names instead of eth0 and eth1, like: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="11:22:33:aa:bb:cc", ATTR{type}=="1", KERNEL=="eth*", NAME="nic0" SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="44:55:66:dd:ee:ff", ATTR{type}=="1", KERNEL=="eth*", NAME="nic1" And also rename /etc/sysconfig/network-scripts/ifcfg-ethX to ifcfg-nicX and modify them accordingly. HTH, -- Ricardo J. Barberis Usuario Linux Nº 250625: http://counter.li.org/ Usuario LFS Nº 5121: http://www.linuxfromscratch.org/ Senior SysAdmin / IT Architect - www.DonWeb.com

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LUSTRE Install Guide
by Ben Archuleta 01 Feb '16

01 Feb '16

Hi All, I am in the process of trying to install Lustre on CentOS 7 and I was wondering if anyone could point me to any good documentation. I found https://wiki.hpdd.intel.com/pages/viewpage.action?pageId=8126821 but this really doesn’t help. I am trying to install version 2.7.1. Regards, Ben

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CentOS-announce Digest, Vol 132, Issue 1
by centos-announce-request＠centos.org 01 Feb '16

01 Feb '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-2016:0082 Important CentOS 6 qemu-kvm Security Update (Johnny Hughes) 2. CESA-2016:0083 Important CentOS 7 qemu-kvm Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 1 Feb 2016 10:06:38 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:0082 Important CentOS 6 qemu-kvm Security Update Message-ID: <20160201100638.GA48502(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:0082 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-0082.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: a1f7d969256f40bceda80f8b528483daa4c46ffd1aa161d688b5213e82534728 qemu-guest-agent-0.12.1.2-2.479.el6_7.4.i686.rpm x86_64: 1e0bbdb48082401bf939242e8365ed87d978d810461fd5f5f8a07fb27cc68908 qemu-guest-agent-0.12.1.2-2.479.el6_7.4.x86_64.rpm 5659db7806844d947e48a239a10e171bfe614f6ec55e41dc4456bbf681ed93a3 qemu-img-0.12.1.2-2.479.el6_7.4.x86_64.rpm 02c1fb0cf175af0ef966c9bdba504598dcc296acd84943e84c6950b660119858 qemu-kvm-0.12.1.2-2.479.el6_7.4.x86_64.rpm 3a706f6a6c9dd68d53403d9bf28e0460d166ccb14b5e236cb3a570fed8981945 qemu-kvm-tools-0.12.1.2-2.479.el6_7.4.x86_64.rpm Source: 15dd53d31a04e2fbff8ed17825a00a8db774e4b765d21cb8e425dfa7f420e1ed qemu-kvm-0.12.1.2-2.479.el6_7.4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Mon, 1 Feb 2016 10:07:16 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:0083 Important CentOS 7 qemu-kvm Security Update Message-ID: <20160201100716.GA48601(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:0083 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-0083.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 4b32c17ff1beedcb1f6061718d320fabefdfbc097c158d4b1dae708fd42fdcea libcacard-1.5.3-105.el7_2.3.i686.rpm e67108224ae1a48a7e3fe50c844eb72cbb1f2577e14a8b4125223a7733fae0d1 libcacard-1.5.3-105.el7_2.3.x86_64.rpm d87a6e35540834492782b7b8912a4585aa1aed9bc8e8be2411869ac629992b2e libcacard-devel-1.5.3-105.el7_2.3.i686.rpm de52616bc23aa304b8e5754dbd01ea01885be400a7c1971f175a71a4c319c8e2 libcacard-devel-1.5.3-105.el7_2.3.x86_64.rpm 9d5121b15522703d568ef24aa6445d70aa25cce27bff49c94ebebe0d484b461e libcacard-tools-1.5.3-105.el7_2.3.x86_64.rpm f6b81452aa1929447d9bc9b1801276e11c20f356a5fffff4817994da23073ce6 qemu-img-1.5.3-105.el7_2.3.x86_64.rpm 21eaddeefef89775defa32724cb48d501184212b8d05d128a3c83911c1fc2099 qemu-kvm-1.5.3-105.el7_2.3.x86_64.rpm 89bb7aa5f7b8d0ed361b7b9090f7a3a508213829237da9e39b3a1d7a674b4fcc qemu-kvm-common-1.5.3-105.el7_2.3.x86_64.rpm eb6f93064a64451b608d32f292e94fad18c53a16790507fe2d97bf1d0b78e006 qemu-kvm-tools-1.5.3-105.el7_2.3.x86_64.rpm Source: f963af3a6d471d8b82c5afef2fc76ef4f1dd3985e10ceafe2b04e04ef1571bf4 qemu-kvm-1.5.3-105.el7_2.3.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 132, Issue 1 ***********************************************

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C7 and hplip
by Alessandro Baggi 31 Jan '16

31 Jan '16

Hi list, I've a printer model HP ENVY 5530 (AIO) configured in wifi. I've configured this printer on my C7(1511) workstation using hplip and cups. Printer is installed e configured. After installation I try to send a test print page and it is printed. After reboot, I try to print other doc, and I got it printed only on grey-scale and if I try to send another test print page from hplip or cups I obtain a gray-scale print and half page with wrong size (like if the "image" is printed on A3). If I remove printer and re-add it, the test page output mode is color but after a reboot it come back to gray-scale mode but in configuration is selected color. hplip version is 3.13.7. Can someone point me in the right direction? thanks in advance.

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CentOS7 changes strike again.
by Rob Kampen 30 Jan '16

30 Jan '16

Still in the process of migrating from an old CentOS5 server to a brand new CentOS7. After finally getting Virtualbox-5.0 installed and a new Wondoze10 Pro installed it became time to shift the data from the old server to the new. The old server is headless and I installed the old WindozeXP into the Virtualbox4.x via the command line. To do some of the admin I needed to attach to the windoze via a gui and used rdesktop via an ssh tunnel of port 3389. This "just worked" with my old CentOS6 laptop and workstations. So now I try to connect to the old server via my laptop also running a recent CentOS7 install using rdesktop - no joy. the ssh command is >ssh servername -L 3389:127.0.0.1:3389 and then also from my laptop rdesktop -a 16 -N 127.0.0.1:3389 -u rkampen -p- only to get ERROR: Failed to open display: various google searches offer suggestions prepending DISPLAY=:0.0 gives Xlib: connection to ":0.0" refused by server Xlib: No protocol specified ERROR: Failed to open display: :0.0 tried setting selinux to permissive mode - still no joy. All this just worked with my old CentOS6 laptop and work station, however I no longer have access to that. I guess there have been some "improvements" with the advent of gnome3 that now prevent this from working, however my knowledge of how this rdesktop interacts with the local display manager are sketchy at best. Any suggestions from those of you that understand this stuff way better than I do? TIA Rob

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7.2: Problem with upgrade and pdns
by Kai Bojens 30 Jan '16

30 Jan '16

Hello everybody, I just wanted to upgrade my system and stepped over the following error: --> Finished Dependency Resolution Error: Package: pdns-3.4.7-1.el7.x86_64 (@epel) Requires: libmbedtls.so.9()(64bit) Removing: mbedtls-1.3.14-1.el7.x86_64 (@epel) libmbedtls.so.9()(64bit) Updated By: mbedtls-2.2.1-1.el7.x86_64 (epel) ~libmbedtls.so.10()(64bit) Error: Package: pdns-tools-3.4.7-1.el7.x86_64 (@epel) Requires: libmbedtls.so.9()(64bit) Removing: mbedtls-1.3.14-1.el7.x86_64 (@epel) libmbedtls.so.9()(64bit) Updated By: mbedtls-2.2.1-1.el7.x86_64 (epel) ~libmbedtls.so.10()(64bit) You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest Am I the only one with this problem? Any suggestions before I try the proposed solutions?

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man and man-db inconsitency
by david 30 Jan '16

30 Jan '16

Folks I use "yum list installed" to determine if a package has been installed. In particular, I was interested in the "man" program, installed with the command "yum install man". In Centos6, if I look at the results, I see that "man" was installed. This is good. In Centos7, if I look at the results, I see that "man-db" was installed. This is inconsistent. The result is that the generic algorithm: if I want package X , check the "yum list installed" output. If X is not listed, install it, otherwise assume it's already installed. Is there a reason for this inconsistency? The above algorithm works with most other packages. David

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Where did network setup goes under setup utility in CentOS 7?
by reynierpm＠gmail.com 29 Jan '16

29 Jan '16

In CentOS 6.7 I ran setup command and I could configure network settings from that "gui" utility at command line. In CentOS 7 I don't know where this goes or how to enabled. I have installed a few packages: yum install setuptool -y \ && yum install system-config-network-tui -y \ && yum install system-config-firewall* -y \ && yum install system-config-securitylevel-tui -y \ && yum install system-config-keyboard -y \ && yum install ntsysv -y But I can't see the network settings, see this pic: http://content.screencast.com/users/ReynierPM/folders/Snagit/media/39e744c6… Should I install any other package?

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Apache doesn't display "It works page" under CentOS 7
by reynierpm＠gmail.com 29 Jan '16

29 Jan '16

I have Apache/2.4.6 installed in a minimal CentOS 7 VM. I am trying to access the default page when Apache is installed by accessing the CentOS IP as http://192.168.3.130 (is a host only interface) but I got "This webpage is not available: ERR_CONNECTION_TIMED_OUT" and I can't find why. I have stopped iptables and then checked: # service iptables status Redirecting to /bin/systemctl status iptables.service ● iptables.service - IPv4 firewall with iptables Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled; vendor preset: disabled) Active: inactive (dead) Jan 29 11:22:43 devserver.local systemd[1]: Stopped IPv4 firewall with iptables. isn't running. I have checked the status of Apache: # service httpd status Redirecting to /bin/systemctl status httpd.service ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: active (running) since Fri 2016-01-29 11:16:00 EST; 7min ago Docs: man:httpd(8) man:apachectl(8) Main PID: 18738 (httpd) Status: "Total requests: 0; Current requests/sec: 0; Current traffic: 0 B/sec" CGroup: /system.slice/httpd.service ├─18738 /usr/sbin/httpd -DFOREGROUND ├─18739 /usr/sbin/httpd -DFOREGROUND ├─18740 /usr/sbin/httpd -DFOREGROUND ├─18741 /usr/sbin/httpd -DFOREGROUND ├─18742 /usr/sbin/httpd -DFOREGROUND └─18743 /usr/sbin/httpd -DFOREGROUND Jan 29 11:15:58 devserver.local systemd[1]: Starting The Apache HTTP Server... Jan 29 11:15:59 devserver.local httpd[18738]: AH00557: httpd: apr_sockaddr_info_get() failed for devserver.local Jan 29 11:15:59 devserver.local httpd[18738]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message Jan 29 11:16:00 devserver.local systemd[1]: Started The Apache HTTP Server. it's running. I have checked network status: # ifconfig eno16777728: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.222.133 netmask 255.255.255.0 broadcast 192.168.222.255 inet6 fe80::20c:29ff:fe6f:2b72 prefixlen 64 scopeid 0x20<link> ether 00:0c:29:6f:2b:72 txqueuelen 1000 (Ethernet) RX packets 152628 bytes 225455749 (215.0 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 54931 bytes 3355746 (3.2 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 eno33554952: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.3.130 netmask 255.255.255.0 broadcast 192.168.3.255 inet6 fe80::20c:29ff:fe6f:2b7c prefixlen 64 scopeid 0x20<link> ether 00:0c:29:6f:2b:7c txqueuelen 1000 (Ethernet) RX packets 9655 bytes 702056 (685.6 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 5800 bytes 529054 (516.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (Local Loopback) RX packets 20 bytes 1700 (1.6 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 20 bytes 1700 (1.6 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 it's fine. I have ping server from Windows: C:\Users\reynierpm>ping 192.168.3.130 Pinging 192.168.3.130 with 32 bytes of data: Reply from 192.168.3.130: bytes=32 time<1ms TTL=64 Reply from 192.168.3.130: bytes=32 time<1ms TTL=64 Reply from 192.168.3.130: bytes=32 time<1ms TTL=64 Reply from 192.168.3.130: bytes=32 time<1ms TTL=64 Ping statistics for 192.168.3.130: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms it works. So ... what's wrong? What I am missing here?

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