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LUKS question
by Wells, Roger K. 13 Dec '17

13 Dec '17

I have existing systems with un-encrypted disks. I have tried unsuccessfully to encrypt them using LUKS. Has anyone out there been able to encrypt an existing system (after the fact, so to speak)? TIA -- Roger Wells, P.E. leidos 221 Third St Newport, RI 02840 401-847-4210 (voice) 401-849-1585 (fax) roger.k.wells(a)leidos.com

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Mate desktop configuration question
by me＠tdiehl.org 12 Dec '17

12 Dec '17

Hi, I am using Mate Desktop from EPEL on a C7.4 system with multiple desktops enabled. Does anyone know how to force alt tab to only switch between applications on the current desktop? Currently it seems that it picks some random app from another desktop that I was on previously (most time the browser). I only want it to chose from apps on the current desktop. It used to work they way that I want but when I upgraded to 7.4 it broke. I seem to remember when I built this machine there was a check box somewhere to control that behavior but I cannot find it. Regards, -- Tom me(a)tdiehl.org

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upgrading python
by Larry Martell 12 Dec '17

12 Dec '17

I am running CentOS 7 and I have python version: Python 2.7.5 (default, Sep 15 2016, 22:37:39) I need a newer version of 2.7 to pick up a bug fix. How can I do that (without breaking anything in CentOS)?

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CentOS-announce Digest, Vol 154, Issue 2
by centos-announce-request＠centos.org 09 Dec '17

09 Dec '17

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-2017:3402 Moderate CentOS 7 postgresql Security Update (Johnny Hughes) 2. CEBA-2017:3397 CentOS 7 libvirt BugFix Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Sat, 9 Dec 2017 01:12:18 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2017:3402 Moderate CentOS 7 postgresql Security Update Message-ID: <20171209011218.GA60295(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2017:3402 Moderate Upstream details at : https://access.redhat.com/errata/RHSA-2017:3402 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: ebc21ceabf8beed3b7b9579cf28e90e0205cac9cacbea2591790f63399523f43 postgresql-9.2.23-3.el7_4.i686.rpm f055cc78d37e04f70a3db95623c2ca7471d5aae086b1e8136093aaa7121f714b postgresql-9.2.23-3.el7_4.x86_64.rpm da812088b757536335128c97674a268514aa2b6bc533465a469099fcc3117575 postgresql-contrib-9.2.23-3.el7_4.x86_64.rpm a574a2fa6ae283484bd48314ab6955e865225d8d5412d3cbbac382f6d48be7cd postgresql-devel-9.2.23-3.el7_4.i686.rpm 82ad0b17b461bd6217602bd7e3cb7865be09476aa9ace9ccf7da912d008d6073 postgresql-devel-9.2.23-3.el7_4.x86_64.rpm 54bb78b193ef24688c22ba2cc0ce3b0fd61f9766b6c813985322a594728c93c1 postgresql-docs-9.2.23-3.el7_4.x86_64.rpm d3f52343b02ead5afab52f019be4ce2edcabd2ba515bfe31ef76a1ea6b06bb82 postgresql-libs-9.2.23-3.el7_4.i686.rpm 050337bfc9d3b15c2776c8c31479019058e54e1ce2fa9656033ebb2fc0a49230 postgresql-libs-9.2.23-3.el7_4.x86_64.rpm 48c69f5753bf40227e50a46876796361accfa630970c8e93f126557e125b1931 postgresql-plperl-9.2.23-3.el7_4.x86_64.rpm e311b9ce20ad0fcd0390e6f509db91039c8c3fe20f5970a0fff836b9764a6d2b postgresql-plpython-9.2.23-3.el7_4.x86_64.rpm 89a290c184e62234310ca82b81055c2dd37b23a42eba08e9c0ada3a04c814bc1 postgresql-pltcl-9.2.23-3.el7_4.x86_64.rpm 799b62b93262b3882ab506ba80cca06fc81bad801a5daddd39366428edf771ee postgresql-server-9.2.23-3.el7_4.x86_64.rpm e0a687fc8c5d74ab396f0abb472d28d0ace98d51eccb31a0a9ec697ca2e67d00 postgresql-static-9.2.23-3.el7_4.i686.rpm 7322db0298b80fb21ce6ca635599ec6bdde2becbf9d62c3b292acb472330bc7f postgresql-static-9.2.23-3.el7_4.x86_64.rpm c63eef7396500d519a0187dba754c4f2bb6491cee0eeb7971a6734e81cbb84ed postgresql-test-9.2.23-3.el7_4.x86_64.rpm f5eb93288be8de28eb1f9161fd6e0e5aff20dad18124e4ec1e3bb8a5bc69a246 postgresql-upgrade-9.2.23-3.el7_4.x86_64.rpm Source: d4fc6f4b8c74daa73bdb2522b5aeaa538df42e09b5b31265bc7766a955875feb postgresql-9.2.23-3.el7_4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Sat, 9 Dec 2017 01:13:48 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2017:3397 CentOS 7 libvirt BugFix Update Message-ID: <20171209011348.GA60533(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2017:3397 Upstream details at : https://access.redhat.com/errata/RHBA-2017:3397 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: b4e03f352b03e9c9cedc94895fe58258e1443080a35ca6182f89453e24c121cf libvirt-3.2.0-14.el7_4.5.x86_64.rpm 5df47e144d7bc868697a96743e4856deb9bebe1895de9a7f04345fa91cb1919d libvirt-admin-3.2.0-14.el7_4.5.x86_64.rpm cb038daa2efb8bcefc3a3f6691513da39209125b5d1ce6fc1c3622e64441b7e9 libvirt-client-3.2.0-14.el7_4.5.i686.rpm f4996e90fdc4b416414f5659b1a1331b2126267b944108f964eed2144b998abc libvirt-client-3.2.0-14.el7_4.5.x86_64.rpm 69a0abb8a4b52ac232340009030504c6a81405e94cee2c325aaa698f3523e2fc libvirt-daemon-3.2.0-14.el7_4.5.x86_64.rpm 115d6b75bccbb080f7e2249266abafe72b70fe608fba5733540217433040065b libvirt-daemon-config-network-3.2.0-14.el7_4.5.x86_64.rpm 45afc89baa336a5c9b91d40e029b827dd716f0f4e4e291be4632b2198341819c libvirt-daemon-config-nwfilter-3.2.0-14.el7_4.5.x86_64.rpm 3b15cfcf1eefa808957d03e5ec51162535d87cabdb9c09630deb06a095097229 libvirt-daemon-driver-interface-3.2.0-14.el7_4.5.x86_64.rpm aed20b0e7e8d250e6c30656cf3fc99efc686b8559333fc9303c53e1fee672af1 libvirt-daemon-driver-lxc-3.2.0-14.el7_4.5.x86_64.rpm d30a76e8e51af36ed6a706d1795f8992f70e17be7b407ebc0f7f3e5679b26671 libvirt-daemon-driver-network-3.2.0-14.el7_4.5.x86_64.rpm b599a46ab37e2f076aada87ea13b1f74ec422c0e9db1a4c0107711948485e1ae libvirt-daemon-driver-nodedev-3.2.0-14.el7_4.5.x86_64.rpm 78a580d9d11ded1cc70481f6029f1e68cb42dd2c3a9817d65d41d6a57dbe5b4d libvirt-daemon-driver-nwfilter-3.2.0-14.el7_4.5.x86_64.rpm 1989e56a3271b0a9c79e2764743c19bbb65078852f60df1a36e0a433efd679ce libvirt-daemon-driver-qemu-3.2.0-14.el7_4.5.x86_64.rpm a0df66fb35c43a72cf33640abe0ae216ad1a1ec28f8fcc4b1c9b9cbebf056ee0 libvirt-daemon-driver-secret-3.2.0-14.el7_4.5.x86_64.rpm cd4f8548912bafb69a1e68200044668da5a6bd7f50bb710deaca9cc953ae41b3 libvirt-daemon-driver-storage-3.2.0-14.el7_4.5.x86_64.rpm f101e598269cd0032daf284c3b7abf7e4941b7abf7fb4a794fae57aafbc52dbb libvirt-daemon-driver-storage-core-3.2.0-14.el7_4.5.x86_64.rpm 8f4c34fd5072197ec6032bcda8f79d0a627161fffee75f8a2243a1cc44806517 libvirt-daemon-driver-storage-disk-3.2.0-14.el7_4.5.x86_64.rpm 3108a2e17d78bd48163b0bf08f5e42dff3bdd364e8e9a6a44146894f63ed0cac libvirt-daemon-driver-storage-gluster-3.2.0-14.el7_4.5.x86_64.rpm 271e3458e66e34234f9a1f0156e0b328ef585b41e6e1a231d4acc9e92f0db22a libvirt-daemon-driver-storage-iscsi-3.2.0-14.el7_4.5.x86_64.rpm 2a69a2142f54e43889ef8d56b0179b029211671e18fffaa39dea360226a339c4 libvirt-daemon-driver-storage-logical-3.2.0-14.el7_4.5.x86_64.rpm a691cc37c6a62c8a936977f3a51d48d171ec29a5b88de77c783b3172ef7b820f libvirt-daemon-driver-storage-mpath-3.2.0-14.el7_4.5.x86_64.rpm ce1423980ed2fe2e7aed7af287d9dc6ab184d45bee0a2f9093178f483b55f2bf libvirt-daemon-driver-storage-rbd-3.2.0-14.el7_4.5.x86_64.rpm 0081eee188acf10e4573dd60a3a7500bd8ec17c5cf56506c0f49f426056604b9 libvirt-daemon-driver-storage-scsi-3.2.0-14.el7_4.5.x86_64.rpm af5a65e5b83c6b33b4f533d6822e5851ab4bfec541bd102a64af18c09d252b07 libvirt-daemon-kvm-3.2.0-14.el7_4.5.x86_64.rpm 7283e0ba5f9cfcc0bb447ca98e0af91caae0611de4b7b53dfe6fd376251a9a95 libvirt-daemon-lxc-3.2.0-14.el7_4.5.x86_64.rpm 33b34721c4c7354c0d79c27d3dd8ba3ec64058030b001851b4e629ce41bd798a libvirt-devel-3.2.0-14.el7_4.5.i686.rpm 28c058c41a4ae95af03831c67fdd5d46a29e5f8e44138da696bbcb865c84bf79 libvirt-devel-3.2.0-14.el7_4.5.x86_64.rpm bdbd9652f0d1d650561189758b319206c308d978202e17c55ed85d950009090d libvirt-docs-3.2.0-14.el7_4.5.x86_64.rpm cc5d61d7b7e121a9772a3a8cb6f749e4d93ff913c4663cdf231b29f9ef15dd06 libvirt-libs-3.2.0-14.el7_4.5.i686.rpm 6f97604af56cdffcb6ec95243ac38e0240de8efd88c54cca973b0a08d3f8b53a libvirt-libs-3.2.0-14.el7_4.5.x86_64.rpm f4ef14f544074e71e3b45bd01accca04f9669267abfba5e0d14680463334650f libvirt-lock-sanlock-3.2.0-14.el7_4.5.x86_64.rpm 3fe8c3c8e27de696ae6b434b8d8e4d54e82b731b5d37e963fa499832e8322f8a libvirt-login-shell-3.2.0-14.el7_4.5.x86_64.rpm c45f4089d983c25634f99a3635330b017712c2917ba78d5a857b650fc27606e0 libvirt-nss-3.2.0-14.el7_4.5.i686.rpm 9b7a2e3f0804be7370aa68ca61a6682736240b90dd1da08e552f6aa8dd8b97a6 libvirt-nss-3.2.0-14.el7_4.5.x86_64.rpm Source: c3b2d2110f4938d787177481c619d4b403e68dac442678578ced52d3ff5ed06a libvirt-3.2.0-14.el7_4.5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 154, Issue 2 ***********************************************

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CAA records using PowerDNS from EPEL
by MRob 08 Dec '17

08 Dec '17

PowerDNS supports CAA records beginning with version 4.0, but the pdns package in EPEL for most recent centos versions is stuck at around version 3.4 (3.4.11 is what I have). Do I have no other choice but to manually compile and maintain my own pdns installation? I prefer to avoid this but I need up-to-date features. Perhaps there is a PowerDNS specific work-around? Maybe the EPEL maintainers backported CAA record support? Thank you for any assistance.

2 2

Switch off laptop screen when docked with lid close - CentOS 7
by Toralf Lund 07 Dec '17

07 Dec '17

Hi, I'm using CentOS on a laptop that part of the time is connected to a docking station with two monitor connected to it. When the laptop lid is docked, its lid is closed, as the system is placed in a position where it's not convenient to keep it open, let alone look at the screen. Now in the past, with CentOS 5 (on a different laptop, but same physical config) and 6, the screen has automatically been switched off in this configuration - it's been as if it was no longer there after I docked the machine, which is of course exactly what I want. After I recently switched to CentOS 7, however, I no longer get this behaviour. Even thought I can't see the screen, it's obvious that it's on, or at least the system thinks so - it appears in display config, and xrandr mentions it as "connected". Any idea what's going on? Shouldn't the screen just switch of automatically? What part of the system is supposed to handle this anyway? And what's the best way around my problem? I've already disabled the screen in Display preferences, of course, but it seems like the situation should ideally be handled at a more global level, and also, *my* display config obviously has no effect on the login manager. Which means I can't really log in while the machine is locked, as the monitor is then still on, and guess where the login window appears... Thanks, - Toralf

2 2

yum files in /tmp
by Jerry Geis 07 Dec '17

07 Dec '17

I am getting /tmp/yum_save_tx.2017-12..... files in /tmp one every hour. What process is making these files ??? I have stopped PackageKit so its not running. I am running CentOS 7.4. With GNOME desktop. Thanks Jerry

4 5

Linux IO Performance Monitor
by Ali Mumcu 06 Dec '17

06 Dec '17

Hello Friends, I wanna to ask how to learn disk (read,write) latency on linux server I use "iostat -kx 5" command to learn latency. But i cant understand which field show latency, svctm or iowait ? And if value svctm is gerater than 15 ms can we say there is a slowly io performance ? And i wanna to learn can we list io latency and utilization for per process? Thanks.

2 1

Migrating From CentOS-6 To CentOS-7
by Eugene Poole 05 Dec '17

05 Dec '17

I asked this in Vol 154, Issue 29: I've a system that has been running CentOS 6 64-bit for almost 4-years and I want to start the move to CentOS 7 64-bit. I run software RAID-1 with LVM everywhere except /boot which is a standard partition RAID-1. There are 2 areas that concern me greatly about this migration: 1. How do I duplicate my current grub configuration file that supports a failure of /dev/sda to grub2? 2. How do I install CentOS 7 but use my existing hard drive layout so I only format specific OS file systems. My drive layout goes back to the original proposed FHS layout. The separate partitions related to the operating system are: /boot 1GB (standard boot as defined in fstab is /dev/md0) The following file systems are all defined in volume group vg_jpdopsys (size is 64 GB) / (root) 6GB /home 4GB /opt 4GB /tmp 2GB /usr 12GB /usr/local 2GB /var 8GB The following file system is defined in volume group vg_jpdswap (size is 24 GB) swap 16GB Plus many other file system dedicated to specific applications and data all using logical volume management. When I moved from CentOS 5 to CentOS 6 all of the OS partitions were formatted except /home. All went extremely well then. But I don't see a way to do that with CentOS 7 retaining the existing disk configuration. Is there some detailed installation instructions showing some advanced methods? TIA Gene If you saw the original post you will see that I did clean it up a bit. I'm starting this move now understanding that I have until 2020 to do it. Any suggestions? TIA Gene -- Eugene Poole Woodstock, Georgia

1 0

Run as root w/o terminal/gksu-polkit uses 100 % CPU
by Toralf Lund 05 Dec '17

05 Dec '17

Hi, On CentOS 7, what's the best way to start a GUI program as root without a terminal? I mean, from a launcher or similar where you can't provide terminal input to "sudo". I'm talking about applications that aren't configured to switch to root out-of-the box, of course. I just tried gksu-polkit from EPEL, and it kind of did the job but: 1. It consumed *a lot* of resources - CPU usage was reported at a constant 100 %, more or less. 2. The process did not go away after I closed the application. Which means it's practically unusable, unless someone can provide a way to fix these problems. Thanks, - Toralf

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