[Linux-cluster] Question about cluster behavior

[Digimer]

Replies in-line:

On 14/02/14 12:07 PM, FABIO FERRARI wrote:
> So it's not a normal behavior, I guess.
>
> Here is my cluster.conf:
>
> <?xml version="1.0"?>
> <cluster config_version="59" name="mail">
>          <clusternodes>
>                  <clusternode name="eta.mngt.unimo.it" nodeid="1">
>                          <fence>
>                                  <method name="fence-eta">
>                                          <device name="fence-eta"/>
>                                  </method>
>                          </fence>
>                  </clusternode>
>                  <clusternode name="beta.mngt.unimo.it" nodeid="2">
>                          <fence>
>                                  <method name="fence-beta">
>                                          <device name="fence-beta"/>
>                                  </method>
>                          </fence>
>                  </clusternode>
>                  <clusternode name="guerro.mngt.unimo.it" nodeid="3">
>                          <fence>
>                                  <method name="fence-guerro">
>                                          <device name="fence-guerro"
> port="Guerro
> " ssl="on" uuid="4213f370-9572-63c7-26e4-22f0f43843aa"/>
>                                  </method>
>                          </fence>
>                  </clusternode>
>          </clusternodes>
>          <cman expected_votes="5"/>

You generally don't need to set this, the cluster can calculate it.

>          <quorumd label="mail-qdisk"/>

You don't set any votes, so the default is "1". So with expected votes 
being 5, that means all three nodes have to be up or two nodes and qdisk.

>          <rm>
>                  <resources>
>                          <ip address="155.185.44.61/24" sleeptime="10"/>
>                          <mysql config_file="/etc/my.cnf"
> listen_address="155.185.44.61" name="mysql"
> shutdown_wait="10" startup_wait="10"/>
>                          <script file="/etc/init.d/httpd" name="httpd"/>
>                          <script file="/etc/init.d/postfix" name="postfix"/>
>                          <script file="/etc/init.d/dovecot" name="dovecot"/>
>                          <fs device="/dev/mapper/mailvg-maillv"
> force_fsck="1" force_unmount="1" fsid="58161"
> fstype="xfs" mountpoint="/cl" name="mailvg-maill
> v" options="defaults,noauto" self_fence="1"/>
>                          <lvm lv_name="maillv" name="lvm-mailvg-maillv"
> self_fence="1" vg_name="mailvg"/>
>                  </resources>
>                  <failoverdomains>
>                          <failoverdomain name="mailfailoverdomain"
> nofailback="1" ordered="1" restricted="1">
>                                  <failoverdomainnode
> name="eta.mngt.unimo.it" priority="1"/>
>                                  <failoverdomainnode
> name="beta.mngt.unimo.it" priority="2"/>
>                                  <failoverdomainnode
> name="guerro.mngt.unimo.it" priority="3"/>
>                          </failoverdomain>
>                  </failoverdomains>
>                  <service domain="mailfailoverdomain" max_restarts="3"
> name="mailservices" recovery="restart"
> restart_expire_time="600">
>                          <fs ref="mailvg-maillv">
>                                  <ip ref="155.185.44.61/24">
>                                          <mysql ref="mysql">
>                                                  <script ref="httpd"/>
>                                                  <script ref="postfix"/>
>                                                  <script ref="dovecot"/>
>                                          </mysql>
>                                  </ip>
>                          </fs>
>                  </service>
>          </rm>
>          <fencedevices>
>                  <fencedevice agent="fence_ipmilan" auth="password"
> ipaddr="155.185.135.105" lanplus="on" login="root"
> name="fence-eta" passwd="******" pr
> ivlvl="ADMINISTRATOR"/>
>                  <fencedevice agent="fence_ipmilan" auth="password"
> ipaddr="155.185.135.106" lanplus="on" login="root"
> name="fence-beta" passwd="******" p
> rivlvl="ADMINISTRATOR"/>
>                  <fencedevice agent="fence_vmware_soap"
> ipaddr="155.185.0.10" login="etabetaguerro"
> name="fence-guerro" passwd="******"/>
>          </fencedevices>
> </cluster>
>
> What log file do you need? There are many in /var/log/cluster..

By default, /var/log/messages is the most useful. Checking 'cman_tool 
status' and 'clustat' are also good.

-- 
Digimer
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