Discuss August 2016

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131 participants
135 discussions

how to install opencl on centos 6.7
by qw 12 Aug '16

12 Aug '16

Hi, I'm building x264, and want to use opencl acceleration function. How to install opencl on centos 6.7 to support intel integrated cpu for 'Intel(R) Xeon(R) CPU E5-2640 v3'? Thanks! Regards andrew

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Re: [CentOS] script to make webpage snapshot
by Valeri Galtsev 11 Aug '16

11 Aug '16

On Thu, August 11, 2016 5:13 pm, Dave Stevens wrote: > Quoting Valeri Galtsev <galtsev(a)kicp.uchicago.edu>: > >> >> On Thu, August 11, 2016 5:02 pm, John R Pierce wrote: >>> On 8/11/2016 1:46 PM, Valeri Galtsev wrote: >>>> Could someone recommend a script or utility one can run from command line >>>> on Linux or UNIX machine to make a snapshot of webpage? >>>> >>>> We have a signage (xibo) and whoever creates/changes content, likes to add >>>> URLs of some webpages there. All works well if these are webpages on our >>>> servers (which are pretty fast), but some external servers often take time >>>> to respond and take time to assemble the page, in addition these servers >>>> sometimes get really busy, and when response is longer than time devoted >>>> for that content in signage window, this window hangs forever with blank >>>> white field until you restart client. Trivial workaround: just to get snapshot (as, say daily cron job), and point signage client to that snapshot definitely will solve it, and simultaneously we will stop bugging >>>> other people servers often without much need for it. >>>> >>>> But when I tried to search for some utility or script that makes webpage >>>> snapshot, I discovered that my ability to search degraded somehow... >>> >>> many/most webpages these days are heavily dynamic content, a static snapshot would likely break. plus any site-relative links on that snapshot would be pointing to your server, not the original, any ajax code on that webpage would try to interact with your server which won't be running the right back end stuff, etcetc. >> >> I usually am not good at explaining what I need. I really only need an image of what one would see in web browser if one point to that URL. I do >> not care it to be interactive. I also don't want to get the content ("mirror") of stuff that URL points to on variety of "depths" - I don't want to use wget or curl for this reason. That is what I tried first and it breaks with at lest one of the web sites - they do seem protect themselves from "robots" or similar. And we don't need it. We just need to >> show what they page shows today, that's all. >> >> Valeri > > why not File -> Print -> .pdf? This involves a person sitting with open web browser and clicking mouse. I need to do it for a few webpages once a day, as they change daily. I prefer to once spend time on making cron job, and forget about it forever. Hence I need it done from command line. Valeri > > D > >> >>> >>> -- >>> john r pierce, recycling bits in santa cruz >>> >> >> >> ++++++++++++++++++++++++++++++++++++++++ >> Valeri Galtsev >> Sr System Administrator >> Department of Astronomy and Astrophysics >> Kavli Institute for Cosmological Physics >> University of Chicago >> Phone: 773-702-4247 >> ++++++++++++++++++++++++++++++++++++++++ >> _______________________________________________ >> CentOS mailing list >> CentOS(a)centos.org >> https://lists.centos.org/mailman/listinfo/centos >> > > > > -- > "As long as politics is the shadow cast on society by big business, the attenuation of the shadow will not change the substance." > > -- John Dewey > > > > > ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++

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Is "xman" available in any CentOS 6.x repo?
by Kay Schenk 11 Aug '16

11 Aug '16

I know it's old but I miss "xman" in CentOS 6. :( -- -------------------------------------------- MzK "Time spent with cats is never wasted." -- Sigmund Freud

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CentOS 7: System log has repeated lines: Started session 123 of user root.
by therbur 11 Aug '16

11 Aug '16

The system log (/var/log/messages) of a CentOS 7.2 system has frequently-repeated message line pairs like: Jul 18 14:00:01 localhost systemd: Started Session 307 of user root. Jul 18 14:00:01 localhost systemd: Starting Session 307 of user root. where the session number increases each time. Looking around on this, e.g. Red Hat Bugzilla bug 727315, it looks like it's when crond starts a task; it looks like it might be fixed - I would think that would be in CentOS but don't know how to find/compare the Fedora and CentOS systemd versions to know for sure. I found a post on a workaround - in /etc/systemd/system.conf to change the line: #LogLevel=info to: LogLevel=notice I did that and rebooted, and it has stopped the messages. I'm worried though that this may have knocked out something of actual interest from the syslog. So my question is, is there a better way? A way that info messages could go to some other log, or better yet, a way that those particular "session" messages, and only those, could go to some other log or be filtered out?

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Missing announcement for qemu-kvm
by Leonard den Ottolander 11 Aug '16

11 Aug '16

Hello, Received an update for qemu-kvm and qemu-img today, but the corresponding announcement is missing. Haven't received any messages since August 3rd, so there might be other announcements that haven't made it to the list yet. Regards, Leonard. -- mount -t life -o ro /dev/dna /genetic/research

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OT: trying to configure Ubuntu 14 to use dhcp
by m.roth＠5-cent.us 11 Aug '16

11 Aug '16

This is very much *not* CentOS, but if anyone knows how to do it *correctly*, please drop me an email offlist. mark

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Gateway question
by Levente Birta 11 Aug '16

11 Aug '16

Hi There is a Centos 7 up-to-date box with 2 interfaces, let's say 192.168.1.12 - enp2s0, 192.168.1.13 on enp3s0. Default gateway on enp2s0. The gateway is pfsense, IP is 192.168.1.1 with 2 WAN connections On the gateway the outgoing traffic is routed by source ip to different WAN, 192.168.1.12 to WAN1 and 192.168.1.13 to WAN2 On the centos box are set all the route and routing rules: route-enp2s0: 192.168.1.0/24 dev enp2s0 src 192.168.1.12 table t2 default via 192.168.1.1 dev enp2s0 table t2 route-enp3s0: 192.168.1.0/24 dev enp3s0 src 192.168.1.13 table t3 default via 192.168.1.1 dev enp3s0 table t3 rule-enp2s0: from 192.168.1.12/32 table t2 to 192.168.1.12/32 table t2 rule-enp3s0: from 192.168.1.13/32 table t3 to 192.168.1.13/32 table t3 All work when I add #route add default gw 192.168.1.1 dev enp3s0 And that way I have : # ip route show default via 192.168.1.1 dev enp3s0 default via 192.168.1.1 dev enp2s0 169.254.0.0/16 dev enp2s0 scope link metric 1002 169.254.0.0/16 dev enp3s0 scope link metric 1003 192.168.1.0/24 dev enp2s0 proto kernel scope link src 192.168.1.12 192.168.1.0/24 dev enp3s0 proto kernel scope link src 192.168.1.13 But how can I add achieve this only with ip route command ... without route? Can I add this in any config files (ex: route-enp2s0)? Thanks -- Levi

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XRDB not in our centos6.8 build
by Dan Hyatt 10 Aug '16

10 Aug '16

I am a bit baffled on this. We recently rebuilt all our servers to CentOS release 6.8 (Final) from a prior 6.x centos release. We ran into a couple of problems such as Java not working (just had to yum install java). It was installed, but unable to create a java machine, until I yum install java solved the problem. But now a user (the big boss) is receiving xrdp errors. And it appears that xrdp is not installed on these newly built servers. I googled xrdp and was unable to decipher if it is needed in our environment (we use sas which does use X11 graphics on the servers to export graphs). If it is needed, wondering why it not included in the groups we have always used for kickstart. When would I need xrdp? or is it one of the leftovers here from a bygone era? Thanks for your response.

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CentOS-announce Digest, Vol 138, Issue 4
by centos-announce-request＠centos.org 10 Aug '16

10 Aug '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-2016:1585 Moderate CentOS 6 qemu-kvm Security Update (Johnny Hughes) 2. Updated Vagrant Box's are now available : 1607 (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Tue, 9 Aug 2016 20:30:28 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:1585 Moderate CentOS 6 qemu-kvm Security Update Message-ID: <20160809203028.GA15794(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:1585 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-1585.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: e31ec415fe61ba629f3df0854b173a99b106b3c7ce69489fb89d7816e2cbb860 qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm x86_64: 3a2e91869b71112d3ebe89f06175ac1a5faefb95fa9acf4d4f172843875b7a91 qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm 456d98c996030cf3e9337012b245b9023027d75c8aa65cab07a499b77ddefbe6 qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm c9916710560c00b92c4efdd82572ec7c494ad873cfbe6ff810f119fced56e06e qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm f0a8a7e166631410c385a1678542abeaa027a4a7d9933222268a6ebbca33a734 qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm Source: 90e35bb009e57acb83e6933d8afedac7e04969c5d022ee11462fab0610dd3d3f qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Wed, 10 Aug 2016 10:43:34 +0100 From: Karanbir Singh <kbsingh(a)centos.org> To: CentOS Announcements List <centos-announce(a)centos.org> Subject: [CentOS-announce] Updated Vagrant Box's are now available : 1607 Message-ID: <55ded250-f8c2-d881-9040-1c91b5c20311(a)centos.org> Content-Type: text/plain; charset=utf-8 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Updated Vagrant box's are now available for CentOS Linux 7 and CentOS Linux 6 for x86_64. These are available for the Libvirt and the VirtualBox providers in Vagrant. ref: https://atlas.hashicorp.com/centos/boxes/6 https://atlas.hashicorp.com/centos/boxes/7 Release Notes for these images are published at : https://seven.centos.org/2016/08/updated-centos-vagrant-images-available - -v1607-01/ We are doing all of our work, including build scripts and build content for these Vagrant Box's as a part of the CentOS Cloud Instance SIG. And host the content for contribution and participation at https://github.com/CentOS/sig-cloud-instance-build/tree/master/vagrant - - I would like to invite everyone to come join us and help extend the scope of this work, as well as improve the current results. regards, - -- Karanbir Singh, Project Lead, The CentOS Project +44-207-0999389 | http://www.centos.org/ | twitter.com/CentOS GnuPG Key : http://www.karan.org/publickey.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAEBAgAGBQJXqvdGAAoJEI3Oi2Mx7xbtw+sH/2OSI2BJtd4/+lTnpJulQFhM ogE+dpfHgKvgVpUSm6PPjtmEVjP2x4OC/pALTRiBkQpgk7Mi7DNt9K8qjD7ClDxk WO/U5rkRTAvIZVFZ5BhXvrN1RzDArxSGdj5oSBnUzKWmc9wGvuX9Rz82FiC173KW 4Am9JeIlrYC5rsFzUqvijyaCG/8MweO6E242/FjfRWe+WTLX59OuVXzuRFVIpcvj p5WMolJ+j3BzqPYOUWIB8nqaFq+NQ7oHdxo/N/94gSxleT/5uHS+KXLyWeVhhHZE UgaAztSB/0r/mFmIkHa2ISqtASMGodTVicPKDfF96+5WldRhXLRVCNYtx4+AZLM= =oBhE -----END PGP SIGNATURE----- ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 138, Issue 4 ***********************************************

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C7 Backup problem
by Alessandro Baggi 10 Aug '16

10 Aug '16

Good morning list, I've a question about backup performed with bacula. I manage a DELL server (dedicated on provider) with C7. I use bacula as backup system with volumes on disk. System performs mon-sat incremental backups and Sun full backup at 03.00 AM. I've another pool (named update) where I performs backup before each software update. Storage is on and external disk 2.5' of 1TB. Yesterday, I've applied centos update and I've performed a full backup before apply updates. Job done. After several hours, I got my disk unmounted and disconnected due to disk error (seems that this disk is failing) and was unable to remount disk. Rebooting system, the disk was mounted correctly. This morning I've checked if something happened. Backup performed and disk mounted without errors but I've noticed a strange behaviour. My incremental backup is large as last full backup (performed on sunday). This is the last jobs performed. 76 | backup-fd | 2016-08-07 03:04:44 | B | F | 191,040 | 7,975,649,059 | T | | 77 | backup-fd | 2016-08-08 03:04:57 | B | I | 44 | 44,593,988 | T | | 78 | backup-fd | 2016-08-08 09:52:57 | B | F | 191,024 | 7,978,295,072 | T | | 79 | backup-fd | 2016-08-08 12:10:31 | B | F | 0 | 0 | A | | 80 | backup-fd | 2016-08-09 03:05:03 | B | I | 191,024 | 7,978,337,100 | T Job with id 79 was aborted due to disk failure. Why, if I have a job full performed on sunday, on monday I got an incr job with the same size? Seems to be that the last incremental job was performed without considering the last full backup. I've checked log but there aren't errors. Thanks. Alessandro.

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Discuss August 2016