dear all
i have a web server on centos 4.6. i have configured one more back up Webserver with the same configuration as the same on the primary web server
Now how to configure this servers for fault tolerance. that is. if one server gets down the other should automatically become up.
Please any one help me out how to configure the above. i am new to Linux ...
Regards, Gopinath M Signal Networks Pvt. Ltd.
Smile... it increases your face value!
You can use IPVS. There are tutorials on howtoforge.
On 5/27/08, gopinath gopinath@signal-networks.com wrote:
dear all
i have a web server on centos 4.6. i have configured one more back upWebserver with the same configuration as the same on the primary web server
Now how to configure this servers for fault tolerance. that is. if one server gets down the other should automatically become up.
Please any one help me out how to configure the above. i am new to Linux ...
Regards, Gopinath M Signal Networks Pvt. Ltd.
Smile... it increases your face value!
On Tue, 27 May 2008, gopinath wrote:
dear all
i have a web server on centos 4.6. i have configured one more back up Webserver with the same configuration as the same on the primary web server
Now how to configure this servers for fault tolerance. that is. if one server gets down the other should automatically become up.
Please any one help me out how to configure the above. i am new to Linux ...
You will want to look at the CentOS cluster suite. Depending upon whether there is shard storage involved, databases, etc, you will want to choose from the LVS (load balancing) part of cluster suite or the high availability part of cluster suite.
Start here. http://www.centos.org/modules/news/article.php?storyid=108
Barry
On Tuesday 27 May 2008 12:57:31 gopinath wrote:
Now how to configure this servers for fault tolerance. that is. if one server gets down the other should automatically become up.
Please any one help me out how to configure the above. i am new to Linux
For a starter, there is a very simple tool for this. It's http://www.inlab.de/balance.html
For a serious ones: 1. Linux High-Availability (http://www.linux-ha.org) 2. RedHat Cluster Suite dan Piranha (http://www.redhat.com) 3. Linux Virtual Server (http://www.linuxvirtualserver.org) 4. BeoWulf Cluster (http://www.beowulf.org) 5. Openmosix (http://openmosix.sourceforge.net)
HTH,
Interested in this discussion too, for reasons recently discussed...
On Tuesday 27 May 2008 09:07, Fajar Priyanto wrote:
For a starter, there is a very simple tool for this. It's http://www.inlab.de/balance.html
- RedHat Cluster Suite dan Piranha (http://www.redhat.com)
- Linux Virtual Server (http://www.linuxvirtualserver.org)
Do all of these (or IPVS or Cluster Suite/GFS) take care of real-time sharing of storage (sessions, database, files, logs) between all nodes? For a LAMP or JEE or any other HTTP stack serving anything but readonly static files, this is usually a requirement.
GFS is for sharing filesystem I know and there are howtos. So would you put Balance or LVS on top of GFS, or...
Would HA/DRBD be on the short list? http://www.drbd.org/ in our case we have a two-node cluster anyway so this seems like the most straightforward option. Or would something else be superior, more up-to-date?
Sam
sbeam wrote:
Interested in this discussion too, for reasons recently discussed...
On Tuesday 27 May 2008 09:07, Fajar Priyanto wrote:
For a starter, there is a very simple tool for this. It's http://www.inlab.de/balance.html
- RedHat Cluster Suite dan Piranha (http://www.redhat.com)
- Linux Virtual Server (http://www.linuxvirtualserver.org)
Do all of these (or IPVS or Cluster Suite/GFS) take care of real-time sharing of storage (sessions, database, files, logs) between all nodes? For a LAMP or JEE or any other HTTP stack serving anything but readonly static files, this is usually a requirement.
GFS is for sharing filesystem I know and there are howtos. So would you put Balance or LVS on top of GFS, or...
Would HA/DRBD be on the short list? http://www.drbd.org/ in our case we have a two-node cluster anyway so this seems like the most straightforward option. Or would something else be superior, more up-to-date?
Sam
I think for a two nodes with real time storage sharing heartbeat / drbd would offer what you want. There's a pretty simple how to on the centos wiki to get you up and running.
I've not really used the RedHat cluster suite, but I 'think' it can offer a similar solution.
http://wiki.centos.org/HowTos/Ha-Drbd
-Ross-
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Alvin Chang -
Barry Brimer -
Fajar Priyanto -
gopinath -
Ross Cavanagh -
sbeam