Discuss September 2014

discuss@lists.centos.org

182 participants
169 discussions

pxebooting
by m.roth＠5-cent.us 18 Sep '14

18 Sep '14

Digging into this, as we rework it, here's a question: assuming the system being pxebooted is server 1, and the tftp server is server 2, on server 2, in the menu for pxeboot, is there any way to specify that the image to boot, and the initrd, are on a server 3? That is, MENU repoboot KERNEL repo://my/repo/images/vmlinuz APPEND repo://my/repo/images/initrd.img (or an IP address, like 192.168.1.13, for the server named repo)? mark

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Re: [CentOS] Advice on CentOS 7, software raid 1, lvm, 3 TB
by Jeff Boyce 17 Sep '14

17 Sep '14

Sorry for breaking the threading, as I only get the daily digest. My comments (interspersed) begin with the **. Message: 41 Date: Tue, 16 Sep 2014 18:38:02 -0400 From: SilverTip257 <silvertip257(a)gmail.com> To: CentOS mailing list <centos(a)centos.org> Subject: Re: [CentOS] Advice on CentOS 7, software raid 1, lvm, 3 TB disks Message-ID: <CA+W-zoqD9e826==2H6i9g4CkM_SrqW=yEtFcWntAy=qeaZGdLA(a)mail.gmail.com> Content-Type: text/plain; charset=UTF-8 On Tue, Sep 16, 2014 at 6:07 PM, Jeff Boyce <jboyce(a)meridianenv.com> wrote: > Greetings - > > I am preparing to order a new desktop system for work. In general the new > system will be a Dell Precision T3610 with two 3 TB drives. I plan on > installing CentOS 7 as a KVM host, with virtual machines for Win 7 Pro and > Linux Mint. I am looking for some advice or a good how-to on configuring > software raid on the two drives, then using LVM for the host and virtual > machines. I have configured our company server (Dell T610) with hardware > raid and LVM for a CentOS 6 KVM host and several virtual machines so I am > not a complete novice, but have never setup a Linux software raid system, > and have not played with a CentOS 7 install yet. I have been searching the > web and forums for information and am not finding much for good guidance. > Lots of gotcha's are popping up identifying issues related to CentOS 7, > software raid 1, grub install, > 2 TB disks (or any combination of these > factors). The CentOS Wiki has a good description of installing I'm not sure which wiki article you might have read. That URL might be worthwhile to share. ** The CentOS Wiki article I was referring to was the same one you provided in the first link of the group of references posted at the bottom of your note. I was a little put off by the article having fairly significant warnings in the first two paragraphs of the article, so I only skimmed through it. > CentOS 5 with raid 1, but there is a big warning about being an > unsupported (risky) approach. Can anyone point me to a good how-to, or > provide some general guidance. Thanks. > > Hopefully what I have typed up below helps you. I don't know about soft-raid1 being an unsupported/risky approach ... that said I'd pick hardware raid over software raid (considering I had spare hardware) so I don't have to fuss with raid at the OS level. I have worked on a mix of software-raid and hardware-raid systems (and still do) ... each has its own pros/cons. I've had success re-adding a new drive in degraded soft-raid1 arrays in a production environment ... so I say go for it. [ ] Somebody else asked about C7 and soft-raid in the past week or week and a half. You can find that thread here: http://lists.centos.org/pipermail/centos/2014-September/145656.html Though I don't think much was accomplished in that thread. [/] ** Yea, I saw that thread recently also, and was hoping for some good information from it, but the original post wasn't specific enough to generate specific guidance. That is why I thought to try a post that was more specific to my objective. My suggestion to you (as well as that last person) is to spin up a VM (or spare bare-metal hardware) and use mdadm commands to assemble, stop, hot-fail, hot-remove, and rebuild (add a new disk to replace a "failed one") your soft-raid array. ** I am planning on having some time set aside to play/experiment with the new box while setting it up. So I am fortunate to not be in a situation where I have to get it into production now before figuring it all out. As is the case with many things Linux, the manpage is your friend. Sometimes sysadmins and hobbyists decide to publish what they've done (good or bad) which can be found with the search engine of your choice. ** I am a book worm so I don't mind reading man pages. But as an ecologist, it is often good to understand the big picture before diving into the details. That way I understand which detail I need to look at, and what order all the details go together in. It looks like the ArchLinux links you gave me below will give me an understanding of that as I read them in detail. In this case, even generic (non-RH or non-CentOS specific) command documentation is likely what you want. More than likely you'll get the results you want by booting to a rescue CD (or switching to a shell on your install CD), setting up your soft-raid, then booting to your install CD, which will probe for your disk/soft-raid/lvm layout. steps for graphical approach (C5, so dated) - http://wiki.centos.org/HowTos/SoftwareRAIDonCentOS5 partitionable soft-raid - http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 TLDP create soft-raid - http://www.tldp.org/HOWTO/Software-RAID-HOWTO.html ** I've seen these first three, and will go back and look at the first one in more detail now as mentioned above. Arch Linux create soft-raid - https://wiki.archlinux.org/index.php/Software_RAID_and_LVM ** I had not found this one. My first impression scanning through it is that it looks to have a lot of the other subjects I am interested in (mbr vs. gpt, XFS filesystem, EUFI vs BIOS mode). repairing - http://www.thomas-krenn.com/en/wiki/Mdadm_recovery_and_resync repairing - http://ethertubes.com/repair-md-mdadm-raid/ repairing - http://blog.laimbock.com/2014/04/01/how-to-replace-a-failed-disk-with-linux… ** Yes, thanks for these also. I am planning on outlining and testing my disaster recovery process when I set this up so I don't have to figure it out in a crisis when/if it happens. ** Thanks for your time. Jeff -- ---~~.~~--- Mike // SilverTip257 // Jeff Boyce www.meridianenv.com

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Zabbix on CentOS: system.users.num question
by 1th＠setevoy.kiev.ua 17 Sep '14

17 Sep '14

Hi. I have installed Zabbix 2.2.6 on CentOS 6.5. Question not too relative to CentOS, but hope somebody can help with it. All triggers works correctly, but venti:system.users.num.last(0)}>0 - dont't. Screenshot one: http://i.stack.imgur.com/YM9mu.png And second one: http://i.stack.imgur.com/TMNqx.png From manual https://www.zabbix.com/documentation/1.8/manual/config/items?s[]=system&s[]… we see, that: > Command who is used on agent side. who on box side: 14:29:44 [root@venti /tmp] # who setevoy pts/0 2014-09-15 14:15 (85.*.*.15) setevoy pts/1 2014-09-15 14:15 (:pts/0:S.0) ... # who | wc -l 11 Thus - system.users.num must be > 0 now. What I'm doing wrong?

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centos 5.10 has 2 DVDs?
by Tom Poe 17 Sep '14

17 Sep '14

Does the install of Centos5.10 prompt to insert disc2? What's on the second disc? Tom

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Centos 7: What happened to the caja extensions?
by Frank Cox 17 Sep '14

17 Sep '14

I just finished setting this computer up again from scratch since the hard drive died yesterday, and when reinstalling the software that was there before, I discovered that the following packages are not available: beesu caja-beesu caja-extensions-common caja-image-converter caja-open-terminal caja-sendto I'm pretty sure that these came from epel before, but they're now missing? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

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CentOS-announce Digest, Vol 115, Issue 12
by centos-announce-request＠centos.org 17 Sep '14

17 Sep '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. CEEA-2014:1242 CentOS 6 tzdata Enhancement Update (Johnny Hughes) 2. CEBA-2014:1249 CentOS 6 firefox BugFix Update (Johnny Hughes) 3. CEEA-2014:1242 CentOS 7 tzdata Enhancement Update (Johnny Hughes) 4. CEBA-2014:1252 CentOS 7 gutenprint FASTTRACK BugFix Update (Johnny Hughes) 5. CEBA-2014:1251 CentOS 7 foomatic FASTTRACK BugFix Update (Johnny Hughes) 6. CEBA-2014:1250 CentOS 7 pm-utils FASTTRACK BugFix Update (Johnny Hughes) 7. CEBA-2014:1248 CentOS 7 lldpad BugFix Update (Johnny Hughes) 8. CEEA-2014:1253 CentOS 6 tzdata Enhancement Update (Johnny Hughes) 9. CEEA-2014:1253 CentOS 7 tzdata Enhancement Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 16 Sep 2014 14:34:04 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2014:1242 CentOS 6 tzdata Enhancement Update Message-ID: <20140916143404.GA57227(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2014:1242 Upstream details at : https://rhn.redhat.com/errata/RHEA-2014-1242.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 45868b58a01f94ca0a2cdbdbfefce9d1170a5cdf1810473574ce687878fb8a9f tzdata-2014f-1.el6.noarch.rpm 90a1976e2918984a0f0738506bd28b9db3213e15fd0c1662adc09c1e502660fb tzdata-java-2014f-1.el6.noarch.rpm x86_64: 45868b58a01f94ca0a2cdbdbfefce9d1170a5cdf1810473574ce687878fb8a9f tzdata-2014f-1.el6.noarch.rpm 90a1976e2918984a0f0738506bd28b9db3213e15fd0c1662adc09c1e502660fb tzdata-java-2014f-1.el6.noarch.rpm Source: 8f67211a2a7dc491cb228c6cc882976dfa6c28715225ac9f1f5174c20356ed3e tzdata-2014f-1.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Tue, 16 Sep 2014 14:37:43 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1249 CentOS 6 firefox BugFix Update Message-ID: <20140916143743.GA57484(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1249 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1249.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 2726321873f54a7ca0144dc120d4ea273cdce6549976abef0d243f663cde0e67 firefox-31.1.0-5.el6.centos.i686.rpm x86_64: 2726321873f54a7ca0144dc120d4ea273cdce6549976abef0d243f663cde0e67 firefox-31.1.0-5.el6.centos.i686.rpm fc14089b8c0e0cb95dddf08ffd09f13a366269a99d4a60cd1f09ee9809fb33e8 firefox-31.1.0-5.el6.centos.x86_64.rpm Source: f80ab34f836e0b05c89f6351d191bb5cdc5f5ffc0fa275c25efb201bebc3161f firefox-31.1.0-5.el6.centos.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Wed, 17 Sep 2014 00:40:17 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2014:1242 CentOS 7 tzdata Enhancement Update Message-ID: <20140917004017.GA27787(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2014:1242 Upstream details at : https://rhn.redhat.com/errata/RHEA-2014-1242.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: acefee7501c44c4f7d06c44251d420880ec1f9f5ca349373f58cf71a85964155 tzdata-2014f-1.el7.noarch.rpm 256af437e021bbc01f6a99adfa27e29da2d9084a4cc79047b7d83cf3f2055273 tzdata-java-2014f-1.el7.noarch.rpm Source: ab762cdb5e7ae2e7d398f4382d182dba15f627704468ef2f442b7012eb45754e tzdata-2014f-1.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Wed, 17 Sep 2014 00:40:35 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1252 CentOS 7 gutenprint FASTTRACK BugFix Update Message-ID: <20140917004035.GA27895(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1252 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1252.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 0856075a910b2464773cd3677bf007e7f807eb387953dcc16cb5d0025ddf621c gutenprint-5.2.9-18.el7.i686.rpm 376d6b2aa6a6eed015c42a6922ef45f6e5282eb157ab8506507987de65cf74cb gutenprint-5.2.9-18.el7.x86_64.rpm f3d00cec93b3ee67e39a620b1a9bc6dea762482e43301362130576990f331a4d gutenprint-cups-5.2.9-18.el7.x86_64.rpm e75b5bf32757aca4f7269db916f09ba5eefd0bed951b5c662797500c60467df4 gutenprint-devel-5.2.9-18.el7.i686.rpm 5f5ac4c0515f1320982a19b2afcbde6d80cf9c3e9e17423f96f0be6b33d0611c gutenprint-devel-5.2.9-18.el7.x86_64.rpm f84fee18c24ffc6c8675db88971b392189f07f5bfd227dde61ceca0525cb8911 gutenprint-doc-5.2.9-18.el7.x86_64.rpm 160ee4da2ac556d4f1cbc311cc34134231c992b3502588ef14dd366aedbb4c3c gutenprint-extras-5.2.9-18.el7.x86_64.rpm 4b9db5c78011aac5a98f2bfcb872f3fc840a6a68d3b9bbe418291b18aa031381 gutenprint-foomatic-5.2.9-18.el7.x86_64.rpm 93d908f4eb42724c02273b893cb72d4336c03c3c5d98a67120e6fb5aec95dfb4 gutenprint-plugin-5.2.9-18.el7.x86_64.rpm Source: 9b0d0d44550de58779860fb3a38edfbb6cdc7f8170941fd58193c2e3a6592a78 gutenprint-5.2.9-18.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Wed, 17 Sep 2014 00:40:47 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1251 CentOS 7 foomatic FASTTRACK BugFix Update Message-ID: <20140917004047.GA27971(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1251 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1251.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 2839eeffb14f6ffee966e08fcd065e4bd7279f8e6e84005bfb06fd4fbfeb0930 foomatic-4.0.9-8.el7.x86_64.rpm 5154ed1e8f6c7a66803324df26e6d160f5fda4b087dbbbd2a848422ddb7da990 foomatic-filters-4.0.9-8.el7.x86_64.rpm Source: 62d9013ea748e5869c612d47b024f7b6bc9e082fc70c4f0b289a0ddec751749c foomatic-4.0.9-8.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 6 Date: Wed, 17 Sep 2014 00:41:00 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1250 CentOS 7 pm-utils FASTTRACK BugFix Update Message-ID: <20140917004100.GA28048(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1250 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1250.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: b9c29f7b0ba54129f929a2943c9ed3acc927ec60eb091ed534e8e0edc302a1aa pm-utils-1.4.1-27.el7.x86_64.rpm d3c6754f6bb84d6acbe3a3dc0ec6e3a990b1927574753cb696345aaa57021ca5 pm-utils-devel-1.4.1-27.el7.i686.rpm 76b405acf40c399060cada4e6c33ecadf1fc854b50caedb00e1700a50a83033b pm-utils-devel-1.4.1-27.el7.x86_64.rpm Source: bd3341deba657db0fda9962c2bac21ca3097e7cb16959adbfd94cda17db15cc6 pm-utils-1.4.1-27.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 7 Date: Wed, 17 Sep 2014 00:41:14 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1248 CentOS 7 lldpad BugFix Update Message-ID: <20140917004114.GA28137(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1248 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1248.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: c9222d30372be0625e4e7afc7bd951aa6d60825062c3f32eff9bf4ca9082d2a2 lldpad-0.9.46-9.el7_0.i686.rpm 6a9664f64ee64669a157971dfeb998f4181454ec4b149f0f5cbaba654960e566 lldpad-0.9.46-9.el7_0.x86_64.rpm 604e967510119bc0df3276cfcf6142a7c6cc2fd59a858df2a4f24b9a2e088e8c lldpad-devel-0.9.46-9.el7_0.i686.rpm 5bbba8f61fe7628fdd3ec0f37b0dcc293fe104f474e61e269da2d141933eb9c4 lldpad-devel-0.9.46-9.el7_0.x86_64.rpm Source: 79fa8cfdafd242e04b4bcd1ae39abd78d1d8d873b91639cb4f703ba39c02f156 lldpad-0.9.46-9.el7_0.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 8 Date: Wed, 17 Sep 2014 00:55:08 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2014:1253 CentOS 6 tzdata Enhancement Update Message-ID: <20140917005508.GA29407(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2014:1253 Upstream details at : https://rhn.redhat.com/errata/RHEA-2014-1253.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: a28b0f531502c34829055dc286e62f223dc96866478f6d36683344ed4d72d855 tzdata-2014g-1.el6.noarch.rpm 1d47337b2947f53592e32f736bb1565c01df3849a81368a9d1fe7f1b3bead643 tzdata-java-2014g-1.el6.noarch.rpm x86_64: a28b0f531502c34829055dc286e62f223dc96866478f6d36683344ed4d72d855 tzdata-2014g-1.el6.noarch.rpm 1d47337b2947f53592e32f736bb1565c01df3849a81368a9d1fe7f1b3bead643 tzdata-java-2014g-1.el6.noarch.rpm Source: aa06329d1261793ad4caf6027cd09bef9d0e1bf41a26a2942a2c1f15d962497f tzdata-2014g-1.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 9 Date: Wed, 17 Sep 2014 01:11:00 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2014:1253 CentOS 7 tzdata Enhancement Update Message-ID: <20140917011100.GA54228(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2014:1253 Upstream details at : https://rhn.redhat.com/errata/RHEA-2014-1253.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 48695c5a5bd085ef87ee9a363bfa8c79b98b043e7071d7f27ec567dc28e14682 tzdata-2014g-1.el7.noarch.rpm 647bb7d58962cba3e8e959e907e4addd622f31e31a6cb1d72c3304a49dd28d8a tzdata-java-2014g-1.el7.noarch.rpm Source: 2691c119d645762ebb28888c83f7e5eb257548e2c4a7795df1f1eaf34ec55d32 tzdata-2014g-1.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 115, Issue 12 ************************************************

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OT: hardware question
by m.roth＠5-cent.us 17 Sep '14

17 Sep '14

Hi, folks, I'm installing a RAID controller card for a large external RAID box in a Dell server. I've got two riser slots available. Here's the question: the controller card has some large chips on one side, and if I put it in riser 1, those chips face downwards in the box, blocking ease of cooling, while if I put it in riser 2, the chips will face up... but be right over a large chip on the m/b that's got a heat sink. Opinions on which slot to use? mark

5 10

Centos 7 RAID tutorial?
by Dave Stevens 17 Sep '14

17 Sep '14

I want to set up a new CentOS install using version 7 and would like to experiment with various RAID levels. Anyone care to point out a tutorial? TIA Dave -- We hang petty thieves and appoint great ones to office -- Aesop

18 49

Extraneous option in sshd_config?
by Sergio Belkin 17 Sep '14

17 Sep '14

Hi, I've found the option in CentOS 7 in sshd_config file #Host *.local # CheckHostIP no I think that option is for ssh_config, not for sshd_config. Please correct me if I'm wrong. Thanks in advance! -- -- Sergio Belkin http://www.sergiobelkin.com LPIC-2 Certified - http://www.lpi.org

2 1

cron.weekly
by Matt 17 Sep '14

17 Sep '14

If I have multiple files in cron.weekly and one script takes hours to finish. Will it block other scripts in cron.weekly?

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Discuss September 2014