Discuss December 2005

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219 participants
328 discussions

RE: Keeping data on 2 servers in sync !
by Jonathan Darton 08 Dec '05

08 Dec '05

>I want to build 2 servers (both running samba) to provide file storage to 2 >offices (approx 100 miles apart, linked via DSL) but all data writen to 1 >server must also be saved to the other server. >Both servers would also allow users to access the data via a VPN thus >allowing 1 office with a failed server to access the other server via the >vpn and still see the data from both offices. >I currently have 1 server working but we want to add the second office to >the system. (Currently 1 office has 10 users and the second office has 1 >user connected via VPN ) but the second office will have 20 within 12 months >and the first will have 35 soon )) >Has anyone done anything like this ? I am currently synchronizing multiple office locations using a program called unison. Unison (http://www.cis.upenn.edu/~bcpierce/unison/) is a very well written program that can perform 2 way file synchronization. There are many configurable options with unison and I recommend that you check it out. In each office I have a PII350 128RAM Fedora or CentOS server running unison and the files are accessed via samba. I also configure samba to hide (veto) all of the temporary files used during synchronization. For redundancy I place a slave server with each master server that backs up all the user data / file system using rsync. This way if one of my $5 PII servers catches fire I can automatically switch over with no downtime for the users. The only downfall I have encountered is with Autocad files not properly reading the synchronized .dwl lock file and more than one user working on the same file. As a work around for this I have configured Unison to keep a backup of the last 20 versions of a file. This way I can always hit my backups to retreive lost data. As a side note, if anyone knows a work around for the stubborn autocad dwl lock file let me know :))! In any case my implementation has allowed me to synchronize file systems between 4 offices (3 in Canada, 1 in USA), using recycled hardware that was otherwise going to be donated/trashed. Let me know if you have any further questions. AJ Darton, B.COMM CIS System Consultant

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Dovecot w/ MySQL support and CentOS
by Jeffrey Tadlock 08 Dec '05

08 Dec '05

I am converting a Debian box running Postfix, Courier and MySQL to a CentOS box running Postfix, Dovecot and MySQL. I have the Postfix with MySQL support taken care of with the RPM from the centosplus repo. It appears that the stock RPM for Dovecot comes with Postgres, but not MySQL support. It looks like I need to download the source RPM and then rebuild it with MySQL support. Could someone outline the steps I need to do this or point me to a good resource? I have not worked with source RPMs in the past, but it looks like it is time to learn! Also, if I build it from a source RPM, should I then exclude it from my repos to keep a future update from overriding the one I built? Thanks! Jeffrey

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CBQ - Centos 4.2
by Adriano Frare 08 Dec '05

08 Dec '05

Dear Friends, How I Install CBQ in CENTOS 4.2 ? Thanks Adriano

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Missed disk array during centos installation!
by Victor Manuel Acosta Montaña 08 Dec '05

08 Dec '05

Hi all, i´m a newby and i have a HP lc 3 server 600 mb ram 3 raid 0 HD and i´m getting this error when i try to install CentOS on it: "...No hard drives found ...OK?" and then server reboots. My question is: Do i need a raid driver to avoid this issue? if so, how i can get the right driver for my box? Any help will be helpfull... thanks and regards!

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CentOS 4.2beta on Sun Ultra 5 (sparc64)
by Magnus Hedemark 08 Dec '05

08 Dec '05

I just wanted to bring some attention to the experimental build of CentOS that Pasi put together for sparc64 architecture. I installed it for the first time last night on a Sun Ultra 5 (333MHz, 256MB RAM, upgraded to 40GB hard disk). I installed it over a serial console as this is a headless system. Install went flawlessly. After the install was done and it booted up, I ssh'd in as root, and within 5 minutes had it participating in my LDAP/Kerberos/NFS environment. Logged out, logged back in with my regular user account with X11 forwarding enabled, and started firing up GUI apps. The box is a little memory starved, and I think with 512MB it would be a lot better, but it is quite usable! App startup time is longer than what my Athlon64 3700+ has me accustomed to but once the apps are running, they are snappy & stable. If you have an old 64 bit Sun workstation kicking around collecting dust, I think it would be worthwhile to try this build out and post your results to Pasi's centos-sparc mailing list. With any luck, maybe we can get to the point where this is an officially supported architecture. Some apps are still missing, as is to be expected with a new architecture. Most notably, OpenOffice.org is not there. I did run firefox, gimp, thunderbird, and xchat flawlessly though. I can't comment at all on local X11 console support because my sun boxes run headless. This is inspiring me to save up for a loaded Sun E420R or E450 to run at home and replace my Duron-based web/mail server.

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Gnomebaker for centos 4.2
by carlopmart 07 Dec '05

07 Dec '05

Hi all, Somebody knows from what repo can I download gnomebaker rpm for Centos 4.2 ??? Thanks. -- CL Martinez carlopmart {at} gmail {d0t} com

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Licences
by Ugo Bellavance 07 Dec '05

07 Dec '05

Hi, I'm looking for a way to determine the licenses of packages we're using. Is there a command (rpm, yum, up2date...) that will take the package name as argument and return me the licence? Or is everything included with Centos 4 GPL? That is the only licence I found in the repositories... I remember that RH had the habit of putting all the applicable licences on the distros' CD. Thanks, -- Ugo -> Please don't send a copy of your reply by e-mail. I read the list. -> Please avoid top-posting, long signatures and HTML, and cut the irrelevant parts in your replies.

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Xen in my financial news
by Robert 07 Dec '05

07 Dec '05

this was in my financial news today. http://news.yahoo.com/news?tmpl=story&u=/nf/20051206/bs_nf/39937 if i may inquire, is anyone here using this effectively and reliably on CentOS? ive seen some other threads yet didnt pay but cursory attention - rh -- Robert Hanson - Abba Communications Computer & Internet Services (509) 624-7159 - www.abbacomm.net

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odd vmplayer problem
by Les Mikesell 07 Dec '05

07 Dec '05

Is anyone using vmplayer with centos4.2 as the host? I have several machines where it works great other than an error that says "*** attempt to put segment in horiz list twice" in the xterm window where it is started. However, on one machine it will start to boot windows virtual machines (both win2000 and XP) and they hang about 3/4 through where the progress bar goes across the screen - and of course this is the machine where I really want to run it. The machine is an IBM eserver with dual xeons and 4 gigs RAM. A very similar but not quite identical machine with less RAM does not have the same problem. Could the memory be an issue? This same machine that has trouble with the windows virtual machines works OK with the downloadable Browser Appliance vm which turns out to be a basic ubuntu installation. -- Les Mikesell lesmikesell(a)gmail.com

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up2date command to install kernel source
by Jerry Geis 07 Dec '05

07 Dec '05

Thanks that link explained a few things.... However it still mentions downloading the kernel source yourself then installing... I was looking for a command that goes and grabs the source rpm.... something like "up2date kernel-source" or something like that - to go grab the correct kernel source... I can do "up2date mozilla" for instance and it gets it and installs it. I am looking for something similaiar for the kernel source src.rpm. THanks, Jerry On Wed, 2005-12-07 at 10:50 -0500, Jerry Geis wrote: >/ What is the correct command using up2date and yum />/ to install the kernel source package. / http://thebs413.blogspot.com/2005/10/kernel-26-on-fedora-based-systems.html -- Ignacio Vazquez-Abrams <ivazquez at ivazquez.net <http://lists.centos.org/mailman/listinfo/centos>> http://centos.ivazquez.net/ gpg --keyserver hkp://subkeys.pgp.net --recv-key 38028b72

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Discuss December 2005