Discuss October 2014

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199 participants
222 discussions

file system replication
by Jason T. Slack-Moehrle 10 Oct '14

10 Oct '14

Hi Everyone, I need to keep 2 systems identical. Mostly e-mail directories, web directories, mysql, etc. The goal here is to have a 2nd system ready to go it the first one starts to exhibit hardware issues. What are options to have this happen? I'm going out on a limb and thinking rsync but I haven't used it past just simple use cases. Can anyone provide some insight for me? CentOS 6.5. Jason

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CentOS-announce Digest, Vol 116, Issue 6
by centos-announce-request＠centos.org 10 Oct '14

10 Oct '14

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://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. Infra - CentOS Wiki instance migration (Fabian Arrotin) ---------------------------------------------------------------------- Message: 1 Date: Thu, 09 Oct 2014 14:44:57 +0200 From: Fabian Arrotin <arrfab(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] Infra - CentOS Wiki instance migration Message-ID: <54368349.8020106(a)centos.org> Content-Type: text/plain; charset=UTF-8 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 We have to do some hardware/software maintenance on the machine actually hosting the Wiki service (http://wiki.centos.org) Instead of just taking the wiki instance down during that maintenance, we've decided to relocate it to a temporary host, proceed to maintenance, and then migrate it back to the previous node. Migration is scheduled for Friday October 10th, 11:00 am UTC time. You can convert to local time with $(date -d '2014-10-10 11:00 UTC') Migration will happen in several steps: 1 - we "freeze" the wiki on the actual node, transfer data, update the A record, restore the service on the temporary node (disruption ~ 30min) 2 - we proceed to the needed maintenance on first node (no disruption in service, but no estimated time) 3 - depending on time needed for step [2], and assuming we have no hardware issue, we proceed like step [1], but in reverse (so disruption ~30 minutes again) Thanks for your comprehending and patience. on behalf of the Infra team, - -- Fabian Arrotin The CentOS Project | http://www.centos.org gpg key: 56BEC54E | twitter: @arrfab -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlQ2g0kACgkQnVkHo1a+xU4flACfc1IjPeHelBntwt4eNTd6SBvM wXAAnAqtOg4Ko4nqd0QVUfX7ZcQevD5K =v15z -----END PGP SIGNATURE----- ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 116, Issue 6 ***********************************************

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Testing packages for Xen, Xen Kernel, and centos-release-xen
by Johnny Hughes 10 Oct '14

10 Oct '14

For those of you who use xen4centos, but are not on the centos-virt mail list (shame on you if you do that :D) .. http://lists.centos.org/pipermail/centos-virt/2014-October/004132.html If you can test the auto update functionality of the kernel as outlined in that post and report the results (hopefully to the virt mail list :D), it would be greatly appreciated. Thanks, Johnny Hughes

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Fwd: CentOS list troubles
by Les Mikesell 09 Oct '14

09 Oct '14

Forwarded on Mark's behalf... ---------- Forwarded message ---------- From: <m.roth(a)5-cent.us> Date: Thu, Oct 9, 2014 at 3:04 PM Subject: CentOS list troubles To: Les Mikesell <lesmikesell(a)gmail.com> Hi, Les, Somewhere between late afternoon yesterday, and this morning, something hit me: regardless of whether I post a new topic, or reply, I get *nothing*: not a post, nor a bounce. It seems to just be going to /dev/null. I've tried emailing list-owner, but I have no idea if it ever got there. Would you mind posting this? For the list-owner, please figure out what happened. Thanks in advance. mark

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Re: [CentOS] CentOS 7 docs, tutorials, etc...
by James B. Byrne 09 Oct '14

09 Oct '14

On Wed, October 8, 2014 12:50, Valeri Galtsev wrote: > > > I would say, CentOS 6 is the best of Linuxes suitable for server (IMHO). > However, I for one decided to move my servers away from Linux (as from > "Unix-like" Linux gradually becomes "Windows-like" during last 5 years or > so). Since some time ago I do not upgrade Linux systems on servers I > maintain. Instead, when the time comes, I just migrate server from Linux > to FreeBSD, which is much more suitable platform for server than Linux. > Version 7 of RedHat Enterprise or CentOS is much worse than version 6 to > build server on. Again, this is just my humble opinion. If I absolutely > have to build server on today's latest Linux, I will choose Debian, which > at least doesn't have systemd yet. But it will have it in next release... > > Again, this is just $0.02 worth of my own opinion, definitely not a > consensus (and likely not even a majority opinion) on this list. > > Valeri > Do you run bhyve virtualisation on any of your migrated FreeBSD hosts? -- *** E-Mail is NOT a SECURE channel *** 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

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Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
by James B. Byrne 09 Oct '14

09 Oct '14

On Wed, October 8, 2014 13:36, Les Mikesell wrote: > On Wed, Oct 8, 2014 at 12:22 PM, Robert Arkiletian <robark(a)gmail.com> wrote: >> >> Just a heads up to those who haven't seen this yet. The main author of >> systemd publicly wrote about being basically persecuted. >> >> https://plus.google.com/u/0/+LennartPoetteringTheOneAndOnly/posts/J2TZrTvu7… > > But oddly, he didn't even mention that there would be a real simple > solution - just add backwards-compatible improvements instead of > actively wrecking the interfaces everyone else had depended on for > decades. > And see this: http://www.zdnet.com/lennart-poetterings-linus-torvalds-rant-7000034384/ -- *** E-Mail is NOT a SECURE channel *** 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

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Re: [CentOS] Systemd Adding Its Own Console To Linux Systems
by James B. Byrne 09 Oct '14

09 Oct '14

On Wed, October 8, 2014 14:49, Les Mikesell wrote: > On Wed, Oct 8, 2014 at 1:33 PM, Digimer <lists(a)alteeve.ca> wrote: >> >> On Wed, Oct 8, 2014 at 1:22 PM, Digimer <lists(a)alteeve.ca> wrote: >>>>> >>>>> >>>> Airbags, ABS, Traction Control, ACE compatibility, stronger survival >>>> space, >>>> better fuel economy, more comfortable... >>> >>> >>> I think I've forgotten what user interfaces these break. Did they >>> take away the steering wheel to add them? >> >> >> You cropped out the second half of my analogy, which explained why I thought >> the analogy applied. > > Umm, no. They are pretty much backwards compatible. Otherwise you'd > have to go through new training and testing to be certified as a > driver when you buy a new car. And car vendors know better than to do > that to their customers. > Car vendors might behave differently however. Particularly if they obtained revenue from the necessary retraining and profited from the licensing procedures. -- *** E-Mail is NOT a SECURE channel *** 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

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vmstat and loadavg disagree about system load
by Mingfei Hua 09 Oct '14

09 Oct '14

1 4 499492 150392 4496 4763380 0 0 192 552 1227 1094 2 0 75 24 0 0 5 499492 150656 4500 4763528 0 0 0 160 465 263 1 0 68 30 0 0 5 499492 150468 4500 4763532 0 0 0 0 177 93 1 0 69 31 0 1 5 499492 151020 4500 4763540 0 0 0 0 160 132 0 0 69 31 0 1 5 499492 151268 4500 4763540 0 0 0 0 304 143 1 0 69 30 0 0 5 499492 151368 4500 4763540 0 0 0 344 369 192 0 0 69 31 0 0 1 499492 145020 4512 4771032 0 0 6260 1428 2013 2613 4 1 79 17 0 2 0 499492 140432 4512 4769396 0 0 31872 72 2393 2796 8 1 87 3 0 1 0 499500 137332 4512 4769432 0 8 25984 80 2052 2012 8 1 90 1 0 1 0 499508 132992 4512 4772592 0 8 24960 384 2325 2344 8 1 90 1 0 3 0 499520 135720 4400 4768792 0 12 24840 252 2491 2345 9 1 89 1 0 0 2 499520 210740 4404 4693096 0 0 15904 384 1798 1513 6 1 90 4 0 1 2 499520 210856 4404 4693636 0 0 0 0 154 119 0 0 87 12 0 0 2 499520 211328 4404 4693832 0 0 0 0 128 119 0 0 87 13 0 0 2 499520 212080 4404 4693832 0 0 0 0 128 144 0 0 87 12 0 0 2 499520 212700 4404 4693836 0 0 0 0 115 135 0 0 87 13 0 0 2 499520 213196 4404 4693836 0 0 0 336 88 102 0 0 87 12 0 2 0 499520 202552 4416 4704504 0 0 7984 17852 2036 1828 6 1 87 7 0 2 0 499520 172800 4416 4733208 0 0 25744 128 2165 2094 9 1 89 2 0 2 0 499520 153872 4416 4754468 0 0 18816 392 2000 1996 7 0 88 4 0 3 0 499520 169620 4416 4738300 0 0 27520 480 2346 2248 9 1 90 1 0 2 0 499520 140260 4416 4765328 0 0 24584 224 2247 2231 9 1 90 1 0 0 2 499520 179204 4416 4725748 0 0 17164 3564 1701 1619 5 1 87 8 0 0 2 499520 179948 4416 4725488 0 0 0 0 209 131 1 0 87 13 0 0 2 499520 180072 4416 4725492 0 0 0 0 111 117 0 0 87 12 0 0 2 499520 180436 4416 4725492 0 0 0 0 71 81 0 0 87 13 0 0 2 499520 180560 4416 4725492 0 0 0 0 182 110 0 0 87 13 0 0 1 499520 180180 4416 4725492 0 0 0 344 315 179 0 0 87 12 0 2 0 499520 182196 4428 4731300 0 0 2944 1108 1828 1935 6 0 86 8 0 1 0 499520 150180 4428 4757292 0 0 23936 88 2038 1905 7 1 88 4 0 2 0 499520 157264 4428 4751916 0 0 23568 176 2324 2139 8 1 87 5 0 1 2 499520 135936 4428 4770852 0 0 27144 120 2428 2449 9 1 85 6 0 2 1 499520 148336 4428 4761668 0 0 19072 192 2281 2420 8 1 83 8 0 0 2 499520 156408 4432 4749652 0 0 12416 436 1303 1235 3 0 86 11 0 ^C [root@idm-amst-db-12 ~]# ^C [root@idm-amst-db-12 ~]# ^C [root@idm-amst-db-12 ~]# uptime 01:47:47 up 26 days, 4:21, 1 user, load average: 26.85, 22.12, 19.38 [root@idm-amst-db-12 ~]# uptime 01:47:58 up 26 days, 4:21, 1 user, load average: 24.38, 21.74, 19.29 [root@idm-amst-db-12 ~]# cat /proc/loadavg 25.40 22.05 19.45 1/555 13911 Sincerely, Mingfei Hua

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Renaming NIC name in CentOS 7
by Richer, Mark (CIV) 09 Oct '14

09 Oct '14

All, I am trying to understand better how you give an interface a more descriptive name and get it all working without a reboot, if possible. We have 1G and 10G interfaces, and I’m trying to use names like 1G-internal, 1G-external, 10G-private, etc. When I boot up, it’s all fine, but if I add one I’m not sure if there is a way to avoid the reboot? For example, I added the 10G interface names this week. Specifically, is there a way to change the network interface name you see in ifconfig and nmcli connection without rebooting CentOS 7? I changed the name in network-scripts. I tried to restart NetworkManager. I brought down the interface and tried to rename the file and bring it up again, but it still retains the previous run-time setting associated with the same UUID in the file. Also I find that on all but one of the server on which I did this, I can restart NetworkManager, but network.service is failing to restart. Do I want both active? And if yes, is this indicative of a problem related to changing the interfaces that goes away (only) by rebooting? For some reason, after doing this on several systems, on only one I can restart network.service, but it also still shows the old interface name. thanks, Mark MARK H RICHER, MS CS NPS-NCR Digital Forensics Lab IT Manager Computer Science Department Naval Postgraduate School - National Capital Region (NCR) 900 N Glebe Rd, Rm 5-182, Arlington, VA 22203 571.858.3254 (o) 571.303.9498 (m) mhricher(a)nps.edu<mailto:mhricher@nps.edu>

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removing menus
by Jerry Geis 09 Oct '14

09 Oct '14

I am attempting to get no menus on the desktop... for CentOS 7. I did: rpm -e --nodeps gnome-shell-extension-apps-menu rpm -e --nodeps gnome-shell-extension-places-menu But now I get an "Activities" menu at the top... instead. Any idea how to remove that package... I cant find what it is called. I had to use --nodeps above as gnome-classic (I think) needs to be installed or nothing works. Thanks, Jerry

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Discuss October 2014