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New Tutorial - RHCS + DRBD + KVM; 2-Node HA on EL6
by Digimer 04 Jan '12

04 Jan '12

Hi all, I'm happy to announce a new tutorial! https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial This tutorial walks a user through the entire process of building a 2-Node cluster for making KVM virtual machines highly available. It uses Red Hat Cluster services v3 and DRBD 8.3.12. It is written such that you can use entirely free or fully Red Hat supported environments. Highlights; * Full network and power redundancy; no single-points of failure. * All off-the-shelf hardware; Storage via DRBD. * Starts with base OS install, no clustering experience required. * All software components explained. * Includes all testing steps covered. * Configuration is used in production environments! This tutorial is totally free (no ads, no registration) and released under the Creative Common 3.0 Share-Alike Non-Commercial license. Feedback is always appreciated! -- Digimer E-Mail: digimer(a)alteeve.com Freenode handle: digimer Papers and Projects: http://alteeve.com Node Assassin: http://nodeassassin.org "omg my singularity battery is dead again. stupid hawking radiation." - epitron

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local repositories
by m.roth＠5-cent.us 04 Jan '12

04 Jan '12

I need a clarification to the documentation. My manager added a 6.2 repo; however, when I try doing pxeboot installs, it fails, asserting that it can't find the group info. Another admin I work with thinks it's not really what it's failing in, and notes that it 404's on images/updates.img and images/product.img. We *think* that's irrelevant and ok. What is not clear to me is when we run createrepo, what directory you need to be in at the time you execute it. mark

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Re: [CentOS] local repositories
by m.roth＠5-cent.us 04 Jan '12

04 Jan '12

John Hodrien wrote: > On Wed, 4 Jan 2012, m.roth(a)5-cent.us wrote: <snip> >> My manager added a 6.2 repo; however, when I try doing pxeboot installs, it fails, asserting that it can't find the group info. Another admin I work <snip> >> What is not clear to me is when we run createrepo, what directory you need to be in at the time you execute it. > > I would expect the createrepo to be done from the DVD root path, but I could be wrong on that point. <snip> > Why are you doing a createrepo there at all? If you're adding your own packages to the base, why not have it as a separate repo? You seem to have misunderstood. .../CentOS/base/6.0 .../CentOS/base/6.2 rsync'd 6.2 from mirror to the latter. Now, are you saying to cd to .../CentOS/base/6.2/ and run createrepo ....? mark

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Request for suggestion of a SCM package for Centos 6
by Rajagopal Swaminathan 04 Jan '12

04 Jan '12

Greetings, I have a freshly installed Centos 6.2 box with everything (darn! I had to hand select each and every package -- IIRC one of the fedora versions had a nice "select all" checkbox). My questions are: 1. Can somebody suggest a way to select all packages while installing from DVD? 2. Can somebody suggest a versioning system which integrates well with a bug tracking system (I had installed Subversion with Trac more than a couple of years back on Centos 5.x for some customer -- but it was a kludge as it required many things not provided with stock Centos 5.x like some python some php 5.2 etc.) TIA, -- Regards, Rajagopal A proud promoter of Centos for over 5 years

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vmware fusion display auto-size problem
by Monty Shinn 04 Jan '12

04 Jan '12

Greetings. I am running vmware fusion 4.1.1 on a OSX host. Centos6.2 is a guest. The box is a macbook laptop running leopard. Before upgrading to 6.2, the display auto-resize (or auto-fill) was working fine. After 6.2, it has stopped working. Centos is fully updated to 6.2. I have tried to install the vmware drivers from the repository (via yum), and yum reports I have the latest. Vmware reports I have the latest version of app and linux tools. I have uninstalled and re-installed vmware tools to no avail. During the vmware tools install it returns a statement that it does not have drivers for x. Anybody else come across this? Google and vmware sites either do not have any info, or I am asking the wrong question. This being my first foray into vmware, is it advisable not to run updates until needed? What is best practice in this config? Thanks in advance for your help. Monty

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Since 6.2 USB-dvices will not be recognized automatically
by Timothy Kesten 04 Jan '12

04 Jan '12

Hi Folks, since the update from 6.1 x86_64 to 6.2 x86_64 my external USB-HDs are not any longer recognized automatically. I mean that popup where I can mount/umount the devices. /var/log/messages says Jan 4 10:37:28 server1 kernel: usb 1-7.3: new high speed USB device using ehci_hcd and address 15 Jan 4 10:37:29 server1 kernel: usb 1-7.3: New USB device found, idVendor=0bc2, idProduct=2300 Jan 4 10:37:29 server1 kernel: usb 1-7.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jan 4 10:37:29 server1 kernel: usb 1-7.3: Product: Portable Jan 4 10:37:29 server1 kernel: usb 1-7.3: Manufacturer: Seagate Jan 4 10:37:29 server1 kernel: usb 1-7.3: SerialNumber: 2GH5KBG2 Jan 4 10:37:29 server1 kernel: usb 1-7.3: configuration #1 chosen from 1 choice Jan 4 10:37:29 server1 kernel: scsi15 : SCSI emulation for USB Mass Storage devices What goes wrong here? Thx Timothy

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Since 6.2 USB-dvices will not be recognized automatically
by Timothy Kesten 04 Jan '12

04 Jan '12

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vsftpd log issues
by Timo Neuvonen 04 Jan '12

04 Jan '12

I have an up-to-date CentOS 6 with reasonable amount of ftp activity (a dozen of network cameras uploading images every second 24x7). The first issue was that the whole /var filesystem was about to get full, because of huge ftp daemon log. vsftpd.conf says: # You may override where the log file goes if you like. The default is shown # below. xferlog_file=/var/log/vsftpd.log Ok, the above works now. But while the setting was (by default) commented out, the default wasn't /var/log/vsftpd.log but /var/log/xferlog which was growing without limits (it was over 6 GB when I first time noticed the problem) since logrotate tried to rotate vsftpd.log -rw------- 1 root root 0 Dec 31 03:07 vsftpd.log -rw------- 1 root root 39134459 Dec 31 12:19 vsftpd.log.1 -rw------- 1 root root 433305200 Dec 30 22:03 xferlog Now, after uncommenting the log file setting line in the conf the next issue is, that logrotate does rotate the log files (the old one gets .1 postfix added to its name and a new file is created), but it still keeps writing to the original file (which is renamed now) In the ls -l listing above: - vsftpd started to write log vsftpd.log around 10pm last night (when I uncommented the log setting from the conf and restarted the daemon, until that it was logging to xferlog) - during the night logrotate has changed the name of the existing log file to ...log.1 but now, several hours later, this renamed old file is still used for logging, and the new ...log file remains empty! Is there some simple option in logrotate's conf that could change this behaviour? Or how to fix this. There must be many others who already have run into this issue. Regards, Timo

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Passwords apparently stopped working.
by James B. Byrne 04 Jan '12

04 Jan '12

I encountered a couple of strange events with respect to password authentication this morning. Two of our staff were unable to login onto several systems using their usual passwords. Both users had last logged in on these hosts using their accounts and passwords on Friday past. The two accounts could not log on to any of the servers for which they had access and the message log on each showed that access was denied for a failed password. The systems involved were running either CentOS-4.9 or CentOS-5.7. So, the effect was uniform across multiple hardware and software platforms. I also checked these accounts against our warm backup machine and encountered the same problems for both. I verified that the passwords being used were correct for the accounts. I also verified that neither of passwords had been reset in some months and there were no expiry dates set for the accounts. I would accept the coincidence of both forgetting their passwords except for the fact that each had kept a record of their password in their wallets and I was able to confirm those values against our records as well. Resetting both the passwords to their current values using the passwd utility on each system corrected the problem insofar as the users were concerned. However, I am somewhat perplexed as to the reason for their passwords to stop working in the first place. Is anyone here aware of any reason why this might happen? -- *** 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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probleme with my wifi card on centos 6
by fakessh 04 Jan '12

04 Jan '12

Hello list 6 centos I wish you a very good year for this festive period I am writing to report a problem I encounter with my wireless card realtek 8150 the installer does not detect the device so the /etc/sysconfig/network-script/ifcfg-wlan0 is absent I can not find the driver for the deposit elrepo No I have in any case managed to detect my peripheique by the system Despite my many attempts sincerely -- http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x092164A7 gpg --keyserver pgp.mit.edu --recv-key 092164A7 http://urlshort.eu fakessh @ http://gplus.to/sshfake http://gplus.to/sshswilting http://gplus.to/john.swilting

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