[Pacemaker] Linux HA setup for CentOS 6.5

Digimer lists at alteeve.ca
Tue Oct 14 23:54:03 EDT 2014


Sure there isn't a typo there?

an-c05n01:~# ls -lah /etc/sysconfig/network-scripts/ifcfg-*
-rw-r--r--. 1 root root 225 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-bond0
-rw-r--r--. 1 root root 220 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-bond1
-rw-r--r--. 1 root root 198 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-bond2
-rw-r--r--. 1 root root 149 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-eth0
-rw-r--r--. 1 root root 144 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-eth1
-rw-r--r--. 1 root root 152 Mar 14  2013 
/etc/sysconfig/network-scripts/ifcfg-eth2
-rw-r--r--. 1 root root 149 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-eth3
-rw-r--r--. 1 root root 144 Jan 16  2013 
/etc/sysconfig/network-scripts/ifcfg-eth4
-rw-r--r--. 1 root root 152 Mar 14  2013 
/etc/sysconfig/network-scripts/ifcfg-eth5
-rw-r--r--. 1 root root 254 Jul 22 09:56 
/etc/sysconfig/network-scripts/ifcfg-lo
-rw-r--r--. 1 root root 213 Mar 13  2013 
/etc/sysconfig/network-scripts/ifcfg-vbr2

I've never seen an EL6 install without the files there, 'network' or 
NetworkManager aside.

digimer

On 14/10/14 11:32 PM, Sihan Goi wrote:
> There aren't any config files in /etc/sysconfig/network-scripts. When I
> was using CentOS 7, the config files were there (ifcfg-something) but in
> this CentOS 6.5 installation, they are missing.
>
> If is possible to not use cman, and just use corosync and pacemaker? If
> so, how?
>
> On Wed, Oct 15, 2014 at 11:22 AM, Digimer <lists at alteeve.ca
> <mailto:lists at alteeve.ca>> wrote:
>
>     You can manually configure the wireless LAN without NetworkManager.
>     If you take a look, there should be existing config files in
>     /etc/sysconfig/network-__scripts/ for the wireless connection. I've
>     not done it myself since many Fedora's ago, but I believe you can
>     change NMCONTROLLER="no" and then start it up with
>     /etc/sysconfig/network start. I could be a bit wrong, but I am sure
>     you can make wireless work without NM.
>
>     Question; Servers with WLAN? I assume these won't be used for corosync?
>
>     digimer
>
>
>     On 14/10/14 11:17 PM, Sihan Goi wrote:
>
>         Hi,
>
>         Is there a tutorial showing how to get a basic Linux HA setup with
>         replicated storage (via DRBD) working on CentOS 6.5? I want to have
>         mySQL as the HA resource with the database replicated across the
>         nodes.
>         I've scoured the web for one but it seems that I get stuck in
>         each one
>         somewhere.
>
>         To elaborate, I have 2 CentOS 6.5 nodes configured with distinct
>         hostnames and static IPs. They are connected to a wireless AP,
>         and can
>         ping each other.
>
>         I tried following this guide -
>         http://clusterlabs.org/__quickstart-redhat.html
>         <http://clusterlabs.org/quickstart-redhat.html>
>         However, cman will not start when NetworkManager is running, and my
>         nodes cannot connect to the wireless AP without NetworkManager
>         running.
>         Am I missing something or is that the stupidest dependency ever?
>         How is
>         a cluster supposed to work when the nodes aren't connected to
>         one another?
>
>         I also tried following the "clusters from scratch" guide but
>         that seems
>         to rely on systemctl calls which aren't available on CentOS 6.5.
>
>         Any help?
>
>         --
>         - Goi Sihan
>         goister at gmail.com <mailto:goister at gmail.com>
>         <mailto:goister at gmail.com <mailto:goister at gmail.com>>
>
>
>         _________________________________________________
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>
>         Project Home: http://www.clusterlabs.org
>         Getting started:
>         http://www.clusterlabs.org/__doc/Cluster_from_Scratch.pdf
>         <http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
>         Bugs: http://bugs.clusterlabs.org
>
>
>
>     --
>     Digimer
>     Papers and Projects: https://alteeve.ca/w/
>     What if the cure for cancer is trapped in the mind of a person
>     without access to education?
>
>     _________________________________________________
>     Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
>     <mailto:Pacemaker at oss.clusterlabs.org>
>     http://oss.clusterlabs.org/__mailman/listinfo/pacemaker
>     <http://oss.clusterlabs.org/mailman/listinfo/pacemaker>
>
>     Project Home: http://www.clusterlabs.org
>     Getting started:
>     http://www.clusterlabs.org/__doc/Cluster_from_Scratch.pdf
>     <http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf>
>     Bugs: http://bugs.clusterlabs.org
>
>
>
>
> --
> - Goi Sihan
> goister at gmail.com <mailto:goister at gmail.com>
>
>
> _______________________________________________
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> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org
>


-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without 
access to education?




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