Re: [CentOS] customized centos 5.4 install, core install?
Am Dienstag, den 13.10.2009, 02:06 +0200 schrieb David Mehler: > Hi, > Thanks for all your replies. I checked out spacewalk and cobbler, both > of which look like they require a network support infrastructure, at > least a tftp server. I want to use a CD or DVD. Kickstart sounds like > the way to go, but i'm looking to have everything self contained, for > example if i want to install the postfix package, i'll want to remove > sendmail, set up postfix to start at selected runlevels and configure > the main.cf and master.cf files so that when the box reboots postfix > is ready to go. I'd also like to have this install as slimmed down as > possible, for example i probably won't be using x so i'd prefer not to > have any x packages in the install dvd. > Thanks. > Dave. This can all be done with kickstart but you will have to have a quite big uniqe kickstart config for each machine. And then all that CD-waste... I'd really rethink the network-install options. financial.com AG Munich head office/Hauptsitz München: Maria-Probst-Str. 19 | 80939 München | Germany Frankfurt branch office/Niederlassung Frankfurt: Messeturm | Friedrich-Ebert-Anlage 49 | 60327 Frankfurt | Germany Management board/Vorstand: Dr. Steffen Boehnert | Dr. Alexis Eisenhofer | Dr. Yann Samson | Matthias Wiederwach Supervisory board/Aufsichtsrat: Dr. Dr. Ernst zur Linden (chairman/Vorsitzender) Register court/Handelsregister: Munich – HRB 128 972 | Sales tax ID number/St.Nr.: DE205 370 553 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell Equallogic
On Mon, Oct 12, 2009 at 06:44:55PM -0700, James A. Peltier wrote: > On Mon, 12 Oct 2009, Eugene Vilensky wrote: > > > Hi List, > > > > Does anyone here use Dell Equallogic IP SAN? If so, do you have any > > immediate high points / low points you wouldn't mind discussing on- or > > off-list ? > > > > Yes, it works fine, however, we don't use the snapshot capability of the > system as it is not as fine grained as we would like. > Hmm.. what kind of problems do you have with snapshots? -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dell Equallogic
On Mon, Oct 12, 2009 at 07:04:21PM -0500, Eugene Vilensky wrote: > Hi List, > > Does anyone here use Dell Equallogic IP SAN? If so, do you have any > immediate high points / low points you wouldn't mind discussing on- or > off-list ? > Yep, I've been using Equallogic iSCSI arrays with Linux/RHEL5/CentOS5. It's excellent storage solution. -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] question on 5.4
While you are at it, consider the packages from go-oo.org. They are supposed to include enhancements which didn't find their way to the official release yet. -Amos On 10/10/09, Ron Loftin wrote: > > On Fri, 2009-10-09 at 11:45 -0400, Jim Perrin wrote: >> On Fri, Oct 9, 2009 at 11:43 AM, Jerry Geis wrote: >> > Does 5.4 come with an updated openoffice. >> > 5.3 comes with version 2.3 was wondering if 5.4 will have 3.1 >> >> Nope. 5.4 won't have openoffice 3.1 >> > That's not a big surprise, just keeping within the stated policies of > CentOS. > > However, I will point out that for those who want OOO 3.1, all they have > to do is skip installing the old version that comes with CentOS, and > install the RPMs that can be downloaded straight from openoffice.org. > The ones for RHEL 5 work very well, and integrate with the Gnome desktop > automagically. > > -- > Ron Loftin relof...@twcny.rr.com > > "God, root, what is difference ?" Piter from UserFriendly > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for boot.kernel.org
On 10/01/2009 07:25 PM, Geerd-Dietger Hoffmann wrote: > Hey > > Is there an initiative to get CentOS to work with boot.kernel ? > not that I am aware of - but well Volunteered. Let me know if you need anything :) - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Copy OS live to different hardware
Bob Puff wrote:
> Hello,
>
> My question: exactly what files should I exclude, so that I copy
> everything -except- what pertains to the ethernet card(s), and hard
> drive mounts. I know of at least:
>
> /etc/fstab
> /etc/sysconfig/network-scripts/*
> /var/run
> /proc
>
I am not sure what you want to achieve, but if you want just to Backup,
maybe specialized Backup Software like Bacula (http://www.bacula.org/)
could be a better solution for you (Sorry, could not resist ;-)
That said, if you want to do it that way, my exclude list (maybe) could
be:
/etc/mtab
/etc/ssh/*_key{,.pub}
/etc/hosts (maybe)
/etc/sysconfig/network-scripts/ifcfg-*
/etc/sysconfig/network-scripts/route-* (not sure, maybe other files too)
/proc/*
/selinux/*
/sys/*
/dev/*
/tmp/*
/*lost+found/* (maybe)
/.auto*
If the partition Layout differs
/etc/fstab
and not lost+found for not existing file systems maybe.
Well, I done that years ago multiple times for one shot cloning not for
regular Backups and i remember beeing surprised that it worked, its kinda
hackish i believe. I am sure i forgot something important paths in list
above.
--
best regards,
markus
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Re: [CentOS] customized centos 5.4 install, core install?
David Mehler wrote: > Hello, > This might be called a core build not completely positive. What i want > to do is make a completely customized centos 5.4 unattended CD or DVt > not only installs a specific list of apps apps that i want on each > system, but configures them automatically perhaps via scripts, and > enables or disables services etc. Basically, i want to drop the CD or > DVD in a box which will probably not have a monitor anyway, and walk > away. I then come back or ssh in and everything is already installed, > any repos are added, configured and ready to go. Is this a core build? > I'd appreciate any pointers on this. > Thanks. > Dave. My Strategy for those things is: 1. cobbler ( https://fedorahosted.org/cobbler/ ) for a minimal Unattended Installation. cobblers primary goal is installation over Network but it can also generate CD/DVD. cobbler integrates kickstart files into your CD. 2. puppet ( http://reductivelabs.com/products/puppet/ ) for central configuration management. -- best regards, markus ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] layer 8 / user level firewall on linux?
From: Rudi Ahlers > Does anyone know of a Linux firewall that offers layer 8 firewall / > user level firewalling? Cyberoam > (http://www.cyberoam.com/firewall.html) has a layer 8 firewall built > into their UTM firewalls, and while it's a great product I find it a > bit limited for what I want. > > I basically want to track which user access what on the internet, from > an internal network. Ideally I want to limit access to certain objects > (i.e. websites, by URL / keyword / type, FTP, skype, MSN, etc) for > certain users as well. Maybe use squid with authentication and acls...? And caching as a bonus... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
On Tue, 2009-10-13 at 00:21 -0400, David Mehler wrote: > Hi, > Thanks for your reply. I'd probably be doing them in pairs spread out > over a long period. I'd be interested in your php kickstart setup > script. > Thanks. > Dave. You may want to look at cobbler. It has a PXE boot option that can be limited by MAC address. This would help in installing a certain "profile" to your machine making it easier for you to customize each install without having to burn mountains of CDs... I am playing around with cobbler right now, but I can still send you the kickstart script if you would like. signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
Hi, Yes, thank you. Please send that script privately. I'll check in to cobbler. Thanks. Dave. On 10/13/09, Tait Clarridge wrote: > On Tue, 2009-10-13 at 00:21 -0400, David Mehler wrote: >> Hi, >> Thanks for your reply. I'd probably be doing them in pairs spread out >> over a long period. I'd be interested in your php kickstart setup >> script. >> Thanks. >> Dave. > > You may want to look at cobbler. It has a PXE boot option that can be > limited by MAC address. This would help in installing a certain > "profile" to your machine making it easier for you to customize each > install without having to burn mountains of CDs... > > I am playing around with cobbler right now, but I can still send you the > kickstart script if you would like. > > > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] OT: pager pay
Hey folks, I'm trying to compare my small company's policy against other companies out there. We pay 10% of your per-hour salary equivalent per every hour you carry it, whether it goes off or not. So for example someone making $55K/year works out to about $27 / hour (I think), so they'd get $2.70 for every hour they carry the pager outside of regular work hours. We are a company of about 25 people. My old employer Nortel still does it this way : - $27.50 for every 8 hour shift you carry it, outside of regular work hours. - any page is billed at time-and-a-half, minimum 1 hour billed - any page requiring you to go into work, is billed at time-and-a-half with a 3 hour min I have a buddy at IBM and while it varies by group, his group does this : - $30/day for carrying it, whether it goes off or not - every page gets billed at time-and-a-half, minimum 30 minutes Anyone else want to share theirs? thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food" ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] web based file sharing software
> depends what you mean by "files sharing" A file download server similar to RapidShare or MegaUpload. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] web based file sharing software
Ramon Nieto wrote: > Hello all > > Does anybody knows about web based file sharing software? of course > that runs on centos. > > i have found 3 proyects on sourceforge, but i would like to hear from > you what do you use or what do you recommend?. Most wiki's allow file attachments with up/download through browsers. Mediawiki is probably the most popular. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: pager pay
Hi. > Hey folks, > > I'm trying to compare my small company's policy against other > companies out there. We pay 10% of your per-hour salary equivalent > per every hour you carry it, whether it goes off or not. So for > example someone making $55K/year works out to about $27 / hour (I > think), so they'd get $2.70 for every hour they carry the pager > outside of regular work hours. We are a company of about 25 people. > > My old employer Nortel still does it this way : > - $27.50 for every 8 hour shift you carry it, outside of regular work > hours. Back in the mid-nineties, I worked for Ameritech, a Baby Bell. I was salaried. Extra pay for carrying it? Ha. HA. Hahahahahaha mark 24x7x365.25 (except for the couple months I carried two...) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: pager pay
On Tuesday 13 October 2009 12:28, Alan McKay wrote: > Hey folks, > > I'm trying to compare my small company's policy against other > companies out there. We pay 10% of your per-hour salary equivalent > per every hour you carry it, whether it goes off or not. So for > example someone making $55K/year works out to about $27 / hour (I > think), so they'd get $2.70 for every hour they carry the pager > outside of regular work hours. We are a company of about 25 people. > > My old employer Nortel still does it this way : > - $27.50 for every 8 hour shift you carry it, outside of regular work > hours. - any page is billed at time-and-a-half, minimum 1 hour billed > - any page requiring you to go into work, is billed at time-and-a-half > with a 3 hour min > > I have a buddy at IBM and while it varies by group, his group does this : > - $30/day for carrying it, whether it goes off or not > - every page gets billed at time-and-a-half, minimum 30 minutes > > Anyone else want to share theirs? > > thanks, > -Alan Pager pay, whatever you get is gravy. pgpVDl28iGIix.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
MHR wrote: > On Mon, Oct 12, 2009 at 7:53 AM, David Mehler wrote: >> Hello, >> This might be called a core build not completely positive. What i want >> to do is make a completely customized centos 5.4 unattended CD or DVt > > Did I miss the announcement? I wasn't expecting 5.4 to be out for > another few weeks http://twitter.com/CentOS/status/4831596086 -- Florin Andrei http://florin.myip.org/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] customized centos 5.4 install, core install?
On Tue, 13 Oct 2009, Florin Andrei wrote: >> Did I miss the announcement? I wasn't expecting 5.4 to be out for >> another few weeks > > http://twitter.com/CentOS/status/4831596086 It's a sure-hit proposition. I schedule a major downtime to install new kernels in all manner of infrastructure servers -- mail, web, nfs, vpn, blah, blah -- and then, the VERY NEXT DAY, I see the CentOS X.Next announcement telling me that I was about two weeks too soon. At least there are some things I can count on... :-) -- Paul Heinlein <> heinl...@madboa.com <> http://www.madboa.com/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: pager pay
Alan McKay wrote: > Anyone else want to share theirs? I don't get on call, but my company pays my text messaging plan on my cell phone each month, since it's used as my pager. It's about $10 a month. Our policy for call outs are as follows: If I have to come into the office, I get a minimum call out time of 2 hours, regardless if I'm here for 15 minutes or 2 hours. If that time falls on a Friday (I work normal Monday to Thursday 10 hour days), anything on Friday until midnight is time and a half pay. If the call out time is past 11:59 p.m. on Friday, until 6:00 a.m. Monday morning, then I get double time pay. There's some comp time rules in there too, but I rarely use it. I have OpenVPN access from home or anywhere else. If I can fix the problem from home without having to come in, I don't get the call out minimum time of 2 hours. I only get paid the OT of the time I worked on the problem. I same rules apply for pay with the time and a half and double time scheme as above. Regards, Max ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
What about disabling the tty requirement for sudo with '!requiretty' in your /etc/sudoers setup? On Mon, Oct 12, 2009 at 12:11 PM, wrote: > > Hello > > I need to know a way to have scp allocate a tty on a remote machine > so I can have it run sudo and activate a vpn which it will need to > activate. scp with "-S" does not work. I can't chmod +s the cisco vpn > client > because when I try to run it it says it can not have setuser. > > I could have the user scp via root but I do not want to do that. > > Any way to have scp allocate a tty? > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: pager pay
Alan McKay wrote: > Hey folks, > > I'm trying to compare my small company's policy against other > companies out there. We pay 10% of your per-hour salary equivalent > per every hour you carry it, whether it goes off or not. So for > example someone making $55K/year works out to about $27 / hour (I > think), so they'd get $2.70 for every hour they carry the pager > outside of regular work hours. We are a company of about 25 people. > > My old employer Nortel still does it this way : > - $27.50 for every 8 hour shift you carry it, outside of regular work hours I'd say really depends on how much work the pager involves, how often your paged and how much time you spend responding to such pages. A company I worked at two jobs ago had pager pay, they tiered it per tier. Pager duty was absolutely brutal, you could easily get 100+ pages a week. I think the average pay was something like $150/week extra for carrying it. I got something like $250/week since I was the lone tier 3 person. There was about 140 people at the time I left. My last company and my current one don't compensate for pager duty, both places the load is very light, my current company has a dedicated 24/7 NOC type setup, so as a tier 3 person(or maybe tier 4 who knows) I get called maybe twice a month. I am technically on call 24/7/365, but if I don't answer they just escalate to somebody else. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
tony.chamberl...@lemko.com wrote: > Hello > > I need to know a way to have scp allocate a tty on a remote machine > so I can have it run sudo and activate a vpn which it will need to > activate. scp with "-S" does not work. I can't chmod +s the cisco vpn client > because when I try to run it it says it can not have setuser. > > I could have the user scp via root but I do not want to do that. > > Any way to have scp allocate a tty? Why don't you set up ssh keys for a passwordless connection as the appropriate user for the file copy and avoid the problem? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
I actually had to set both ssh keys and commented out the requiretty in the sudoers file. What I was doing was having ssh called from a script and running a command on that remote host it was ssh-ing into. On Oct 13, 2009, at 11:43 AM, Les Mikesell wrote: > tony.chamberl...@lemko.com wrote: >> Hello >> >> I need to know a way to have scp allocate a tty on a remote machine >> so I can have it run sudo and activate a vpn which it will need to >> activate. scp with "-S" does not work. I can't chmod +s the cisco >> vpn client >> because when I try to run it it says it can not have setuser. >> >> I could have the user scp via root but I do not want to do that. >> >> Any way to have scp allocate a tty? > > Why don't you set up ssh keys for a passwordless connection as the > appropriate user for the file copy and avoid the problem? > > -- > Les Mikesell > lesmikes...@gmail.com > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: pager pay
Like Max I don't have "pager pay" but I do get paid for call outs. My phone is fully paid for (approx $60/m) and call outs are paid at time and a half (Sunday is double time), minimum one hour. All travel time is considered call out time and mileage is eligible for $0.50/km. I'm on call 7am to 9pm Mon-Sat and I usually work 7am-5pm Mon-Fri. -- Drew "Nothing in life is to be feared. It is only to be understood." --Marie Curie ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
aurfal...@gmail.com wrote: > I actually had to set both ssh keys and commented out the requiretty > in the sudoers file. > > What I was doing was having ssh called from a script and running a > command on that remote host it was ssh-ing into. I'm still missing why you'd need to sudo inside the remote shell instead of ssh'ing as the right user in the first place. Or at least why you'd require a password for it. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
Well, I noticed that ssh/scp probably requires tty and when called from a script, its not from a tty. At least in my case which was drupal calling a script that lauched ssh, a non tty source. I also required running privileged commands. Mebbe you don't need all this so check your logs and see what happens. On Oct 13, 2009, at 12:15 PM, Les Mikesell wrote: > aurfal...@gmail.com wrote: >> I actually had to set both ssh keys and commented out the requiretty >> in the sudoers file. >> >> What I was doing was having ssh called from a script and running a >> command on that remote host it was ssh-ing into. > > I'm still missing why you'd need to sudo inside the remote shell > instead > of ssh'ing as the right user in the first place. Or at least why > you'd > require a password for it. > > -- > Les Mikesell >lesmikes...@gmail.com > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
Les Mikesell wrote: > > I'm still missing why you'd need to sudo inside the remote shell instead > of ssh'ing as the right user in the first place. Perhaps he doesn't know the user@ syntax. Tony, try this: [localu...@host1 ~]$ ssh r...@host2 remotecmd This requires that the public key for localuser on host1 exists in host2:.ssh/authorized_keys. It also requires "PermitRootLogin yes" in /etc/ssh/sshd_config, which is unfortunately the default on CentOS. (I usually turn it off.) Beware that this makes localuser on host1 equivalent to root on host2! Also realize that remotecmd can be a very complex thing, not just a simple command. You can use pipes and other things through ssh. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
Warren Young wrote: > Les Mikesell wrote: >> [...] > > This requires that the public key for localuser on host1 exists in > host2:.ssh/authorized_keys. It also requires "PermitRootLogin yes" in > /etc/ssh/sshd_config, which is unfortunately the default on CentOS. (I > usually turn it off.) Unfortunately? I could not live w/o it ;-) > Also realize that remotecmd can be a very complex thing, not just a > simple command. You can use pipes and other things through ssh. If using IO redirections or pipes, be sure to quote them correctly: [localu...@host1 ~]$ ssh r...@host2 remotecmd > /tmp/file will create /tmp/file with the output of remotecmd on host1 (!), while [localu...@host1 ~]$ ssh r...@host2 remotecmd ">" /tmp/file will create /tmp/file on host2. Cheers frank ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] scp with tty
> Well, I noticed that ssh/scp probably requires tty and when called > from a script, its not from a tty. > > At least in my case which was drupal calling a script that lauched > ssh, a non tty source. > > I also required running privileged commands. > > Mebbe you don't need all this so check your logs and see what happens. > My last job, I was setting up rsync backups. What I did was create a user, backup, then in /etc/sudoers, have !requiretty *only* for that user. The user was also limited in what commands it could run (in that case, rsync only). Don't forget to log in as that user first, so that you don't get the "Oh, This is a new IP, are you Sure you want to continue connecting?!?!" mark > On Oct 13, 2009, at 12:15 PM, Les Mikesell wrote: > >> aurfal...@gmail.com wrote: >>> I actually had to set both ssh keys and commented out the requiretty >>> in the sudoers file. >>> >>> What I was doing was having ssh called from a script and running a >>> command on that remote host it was ssh-ing into. >> >> I'm still missing why you'd need to sudo inside the remote shell >> instead >> of ssh'ing as the right user in the first place. Or at least why >> you'd >> require a password for it. >> >> -- >> Les Mikesell >>lesmikes...@gmail.com >> ___ >> CentOS mailing list >> CentOS@centos.org >> http://lists.centos.org/mailman/listinfo/centos > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] timekeeping on VMware guests
Howdy, I am having time-drift issues on my CentOS VM. I had referred to following documentation: http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't help. I used kickstart for creating this VM and I am listing important steps in ref to timekeeping issue. Any comments or suggestion would be appreciated. - CS. --- # For EL5 virtual machines, Append the following in Grub to help keep the clock from drifting # and to reduce the interupt requests # 32bit: --append="rhgb quiet divider=10 clocksource=acpi_pm" # 64bit: --append="rhgb quiet notsc divider=10" bootloader --location=mbr --md5pass=$1$mXSD1l6mO$BBCk1gYArAATS7dlCQGthN. --append="rhgb quiet divider=10 clocksource=acpi_pm" %packages --nobase # Other packages not listed here # ntp was installed ntp ### Add step-tickers ### cat > /etc/ntp/step-tickers <<\EOF2 0.centos.pool.ntp.org 1.centos.pool.ntp.org EOF2 ### End of step-ticker file ### # Applied patch mentioned on CentOS page # http://wiki.centos.org/TipsAndTricks/VMWare_Server patch --verbose -b -l -i /root/ntp.patch VMware Tools not installed. Thanks, CS. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
Carlos Santana wrote: > Howdy, > > I am having time-drift issues on my CentOS VM. I had referred to > following documentation: > http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't > help. I used kickstart for creating this VM and I am listing important > steps in ref to timekeeping issue. Any comments or suggestion would be > appreciated. > > - > CS. > I'm not sure what version of VMware Server you're running, but I had issues keeping accurate time within guest VMs until I followed the instructions at: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1591 If your guest clocks are running too quickly, this may apply to you. -Greg ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
On Tue, Oct 13, 2009 at 2:42 PM, Carlos Santana wrote: > Howdy, > > I am having time-drift issues on my CentOS VM. I had referred to > following documentation: > http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't > help. I used kickstart for creating this VM and I am listing important > steps in ref to timekeeping issue. Any comments or suggestion would be > appreciated. The knowledgebase article referenced in the VMWare Server wiki article: http://kb.vmware.com/kb/1006427 is the best source as far as I can tell. This is because VMWare keep the contents up-to-date. As suggested in there, you may want to try the 5.4 kernel -164 (already available for CentOS) without using clocksource or divider= options. This kernel has patches that were offered by VMWare developers to address the time drift issues. Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
Carlos Santana wrote: > Howdy, > > I am having time-drift issues on my CentOS VM. I had referred to > following documentation: > http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't > help. I used kickstart for creating this VM and I am listing important > steps in ref to timekeeping issue. Any comments or suggestion would be > appreciated. [..] > VMware Tools not installed. You should certainly install vmware tools, and enable time sync to the guest. Also don't run an ntp server in a Vmware VM. I had an issue on my system running Debian and VMware server, I think it was a hardware/bios issue but the thing was the host system detected the clock speed of the hardware at 1/2 the proper speed. Which caused the host OS clock speed to double. Which wrecked havok in the VMs. Once I loaded the 'p4-clockmod' module that 'fixed' the clock speed in the host and I restarted the guest VMs and things were good after that. Another thing to check is to make sure the 'rtc' driver is loaded, my recent vmware server experience is limited to running it on Debian(have it on 2 systems), so I can't speak to running it on top of CentOS. Most of my ESX guests are CentOS though. Another thing I do is have ntpdate run in cron every so often to do another 'sync' to the host, typically once every 5 minutes I found that in my experience at least there is still some drift over time without doing that even with vmware tools time sync enabled. I do the same on guests running on ESX(roughly 300 of them). I have found on ESX at least, haven't tried any other version of vmware, but on ESX with a VMI enabled kernel(unfortunately none of the RHEL4/5 kernels are VMI-enabled) with paravirtualization you can run an ntp server in the guest. I run dedicated Fedora 8 VMs with ntp servers(my vmware servers sync against those VMs), for this purpose. I know paravirtualization is going away in VMware at some point, hoping to find another solution before that happens. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
On Tue, Oct 13, 2009 at 04:31:03PM -0700, nate wrote: > Carlos Santana wrote: > > Howdy, > > > > I am having time-drift issues on my CentOS VM. I had referred to > > following documentation: > > http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't > > help. I used kickstart for creating this VM and I am listing important > > steps in ref to timekeeping issue. Any comments or suggestion would be > > appreciated. > > [..] > > VMware Tools not installed. > > You should certainly install vmware tools, and enable time sync to > the guest. Also don't run an ntp server in a Vmware VM. This is what I'd always thought, but the VMware KB link[1] referenced in the other reply in this thread seems to indicate that best practice is to use NTP + kernel w/ clock/divider options (unless it's new enough to not need it) and to *not* use the VMware Tools host time sync. That said, you should certainly still have VMware Tools installed, it just sounds like the host time sync is no longer preferred... Also note that they recommend you remove the local time source in ntp.conf... Ray [1] http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
I had a similar issue with my Xen VMs, both fully virtualized and para virtualized. I followed these dirs and was able to fix it. Perhaps its applicable to you? http://www.linux.org.za/Lists-Archives/glug-tech-0905/msg00271.html On Oct 13, 2009, at 4:34 PM, Ray Van Dolson wrote: > On Tue, Oct 13, 2009 at 04:31:03PM -0700, nate wrote: >> Carlos Santana wrote: >>> Howdy, >>> >>> I am having time-drift issues on my CentOS VM. I had referred to >>> following documentation: >>> http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it >>> didn't >>> help. I used kickstart for creating this VM and I am listing >>> important >>> steps in ref to timekeeping issue. Any comments or suggestion >>> would be >>> appreciated. >> >> [..] >>> VMware Tools not installed. >> >> You should certainly install vmware tools, and enable time sync to >> the guest. Also don't run an ntp server in a Vmware VM. > > This is what I'd always thought, but the VMware KB link[1] referenced > in the other reply in this thread seems to indicate that best practice > is to use NTP + kernel w/ clock/divider options (unless it's new > enough > to not need it) and to *not* use the VMware Tools host time sync. > > That said, you should certainly still have VMware Tools installed, it > just sounds like the host time sync is no longer preferred... > > Also note that they recommend you remove the local time source in > ntp.conf... > > Ray > > [1] > http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427 > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
On Tue, Oct 13, 2009 at 4:34 PM, Ray Van Dolson wrote: > On Tue, Oct 13, 2009 at 04:31:03PM -0700, nate wrote: >> You should certainly install vmware tools, and enable time sync to >> the guest. Also don't run an ntp server in a Vmware VM. > > This is what I'd always thought, but the VMware KB link[1] referenced > in the other reply in this thread seems to indicate that best practice > is to use NTP + kernel w/ clock/divider options (unless it's new enough > to not need it) and to *not* use the VMware Tools host time sync. > > That said, you should certainly still have VMware Tools installed, it > just sounds like the host time sync is no longer preferred... > > Also note that they recommend you remove the local time source in > ntp.conf... > > Ray > > [1] > http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427 Right. The instructions in the above KB article are contrary to the tactics we used to employ. At least one of my VM guests whose clock was going too fast was corrected by following that KB. However, there is no one-size-fits-all solution. The article is the best effort by VMWare but it does not rectify all cases. As a matter of fact, the VMWare techs have helped Red Hat improve the RHEL kernel by providing patches (as I mentioned in my earlier post). The details are in this bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=463573 Those patches are now in the -164 kernel. Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
On Tue, 13 Oct 2009, Ray Van Dolson wrote: > On Tue, Oct 13, 2009 at 04:31:03PM -0700, nate wrote: >> Carlos Santana wrote: >>> Howdy, >>> >>> I am having time-drift issues on my CentOS VM. I had referred to >>> following documentation: >>> http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't >>> help. I used kickstart for creating this VM and I am listing important >>> steps in ref to timekeeping issue. Any comments or suggestion would be >>> appreciated. >> >> [..] >>> VMware Tools not installed. >> >> You should certainly install vmware tools, and enable time sync to >> the guest. Also don't run an ntp server in a Vmware VM. > > This is what I'd always thought, but the VMware KB link[1] referenced > in the other reply in this thread seems to indicate that best practice > is to use NTP + kernel w/ clock/divider options (unless it's new enough > to not need it) and to *not* use the VMware Tools host time sync. > > That said, you should certainly still have VMware Tools installed, it > just sounds like the host time sync is no longer preferred... > > Also note that they recommend you remove the local time source in > ntp.conf... Indeed, they changed course over time once they learned that NTP could be made to work reliably when using tinker panic 0. I have had my share of VMware timekeeping troubles the past 5 years, mostly because the recommendations didn't always apply to what we were seeing. We still use Host-Guest synchronization for ESX 2.0 VM guests, but most of the infrastructure has been migrated, recently to ESX 3.5. VMware never could confirm that the recommendations laid out in the knowledge base article also applies to ESX 2.0. They seem to update that document (and the timekeeping PDF) for every new ESX release, and removing anything that applied to the previous release :-/ And without a detailed changelog and no access to previous versions of the document you may get paranoid or get into discussions based on different copies of that document. I've been there too :-) -- -- dag wieers, d...@wieers.com, http://dag.wieers.com/ -- [Any errors in spelling, tact or fact are transmission errors] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] timekeeping on VMware guests
Carlos Santana wrote: > Howdy, > > I am having time-drift issues on my CentOS VM. I had referred to > following documentation: > http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't > help. I used kickstart for creating this VM and I am listing important > steps in ref to timekeeping issue. Any comments or suggestion would be > appreciated. > You want to look at VMware's Best Practices for timekeeping. It says to use Linux's NTP, *not* VMware tools. mark > - > CS. > > --- > # For EL5 virtual machines, Append the following in Grub to help keep > the clock from drifting > # and to reduce the interupt requests > # 32bit: --append="rhgb quiet divider=10 clocksource=acpi_pm" > # 64bit: --append="rhgb quiet notsc divider=10" > bootloader --location=mbr > --md5pass=$1$mXSD1l6mO$BBCk1gYArAATS7dlCQGthN. --append="rhgb quiet > divider=10 clocksource=acpi_pm" > > %packages --nobase > # Other packages not listed here > # ntp was installed > ntp > > ### Add step-tickers ### > cat > /etc/ntp/step-tickers <<\EOF2 > 0.centos.pool.ntp.org > 1.centos.pool.ntp.org > EOF2 > ### End of step-ticker file ### > > > # Applied patch mentioned on CentOS page > # http://wiki.centos.org/TipsAndTricks/VMWare_Server > patch --verbose -b -l -i /root/ntp.patch > > > > VMware Tools not installed. > > > > Thanks, > CS. > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- The truth will out: someone got it at last: Dogs have masters; cats have staff. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.3 on X86_64: yum installs both i386 and x86_64 packages
I removed all i?86 on my x86_64 servers. No problem. -- http://vnoss.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Best practice settings for channel bonding interface mode?
Hi, may be there are some best practice suggestions for the "best mode" for channel bonding interface? Or in other words, when should/would I use which mode? E.g. I do have some fileservers connected to the users lan and to some ISCSI Storages. Or some Webservers only connected to the LAN. The switches are all new cisco models. I've read sone docs (1), (2) and (3) so the theory is mostly clear. Thanks for any suggestion or hint, Best regards, Götz (1) http://www.linuxhorizon.ro/bonding.html (2) http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-networkscripts-interfaces.html#s2-networkscripts-interfaces-chan (3) http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-modules-ethernet.html#s2-modules-bonding -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reini...@filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrats: Prof. Dr. Claudia Hübner Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium Geschäftsführer: Prof. Thomas Schadt ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
