[Linux-HA] DC election

[Dejan Muhamedagic]

Hi,

On Mon, Sep 10, 2007 at 02:43:41PM +0200, FG wrote:
> Hi,
> 
> my config: active/passive cluster (2 nodes).
> 
> The resources are configured to locate on the first node (castor).
> When i start heartbeat on the first node (castor) and then quickly on
> the second node (pollux), the resource are logically located on the
> first node (castor) but this is the second node who is elected DC.
> 
> Is it a problem or it does not matter which is elected ?

It is not a problem.

Thanks.

Dejan

> 
> Regards
> Fabrice
> 
> i join my cib.xml.
> 
> 
> 
>  

>  <cib admin_epoch="6" have_quorum="true" ignore_dtd="false" num_peers="0" cib_feature_revision="1.3" generated="false" num_updates="1" epoch="26" cib-last-written="Mon Sep 10 14:17:36 2007" ccm_transition="1">
>    <configuration>
>      <crm_config>
>        <cluster_property_set id="cib-bootstrap-options">
>          <attributes>
>            <nvpair id="cib-bootstrap-options-symmetric-cluster" name="symmetric-cluster" value="true"/>
>            <nvpair id="cib-bootstrap-options-no-quorum-policy" name="no-quorum-policy" value="stop"/>
>            <nvpair id="cib-bootstrap-options-default-resource-stickiness" name="default-resource-stickiness" value="200"/>
>            <nvpair id="cib-bootstrap-options-default-resource-failure-stickiness" name="default-resource-failure-stickiness" value="-200"/>
>            <nvpair id="cib-bootstrap-options-stonith-enabled" name="stonith-enabled" value="false"/>
>            <nvpair id="cib-bootstrap-options-stonith-action" name="stonith-action" value="reboot"/>
>            <nvpair id="cib-bootstrap-options-stop-orphan-resources" name="stop-orphan-resources" value="true"/>
>            <nvpair id="cib-bootstrap-options-stop-orphan-actions" name="stop-orphan-actions" value="true"/>
>            <nvpair id="cib-bootstrap-options-remove-after-stop" name="remove-after-stop" value="false"/>
>            <nvpair id="cib-bootstrap-options-short-resource-names" name="short-resource-names" value="true"/>
>            <nvpair id="cib-bootstrap-options-transition-idle-timeout" name="transition-idle-timeout" value="60s"/>
>            <nvpair id="cib-bootstrap-options-default-action-timeout" name="default-action-timeout" value="15s"/>
>            <nvpair id="cib-bootstrap-options-is-managed-default" name="is-managed-default" value="true"/>
>            <nvpair name="last-lrm-refresh" id="cib-bootstrap-options-last-lrm-refresh" value="1189417981"/>
>          </attributes>
>        </cluster_property_set>
>      </crm_config>
>      <nodes>
>        <node id="47cb4e3e-7c8f-4dc0-9da8-d9744815ed53" uname="castor" type="normal"/>
>        <node id="6bf7fba5-aa0e-40c8-b9d0-fcff43e6c066" uname="pollux" type="normal"/>
>      </nodes>
>      <resources>
>        <group id="group_1">
>          <primitive class="ocf" id="IPaddr_147_210_36_7" provider="heartbeat" type="IPaddr">
>            <operations>
>              <op id="IPaddr_147_210_36_7_mon" interval="5s" name="monitor" timeout="5s"/>
>            </operations>
>            <instance_attributes id="IPaddr_147_210_36_7_inst_attr">
>              <attributes>
>                <nvpair id="IPaddr_147_210_36_7_attr_0" name="ip" value="147.210.36.7"/>
>                <nvpair id="IPaddr_147_210_36_7_attr_1" name="netmask" value="255.255.255.0"/>
>                <nvpair id="IPaddr_147_210_36_7_attr_2" name="nic" value="eth0"/>
>              </attributes>
>            </instance_attributes>
>          </primitive>
>          <primitive class="ocf" id="Filesystem_2" provider="heartbeat" type="Filesystem">
>            <operations>
>              <op id="Filesystem_2_mon" interval="60s" name="monitor" timeout="60s"/>
>            </operations>
>            <instance_attributes id="Filesystem_2_inst_attr">
>              <attributes>
>                <nvpair id="Filesystem_2_attr_0" name="device" value="/dev/VolGroup01/maillv"/>
>                <nvpair id="Filesystem_2_attr_1" name="directory" value="/mailsan"/>
>                <nvpair id="Filesystem_2_attr_2" name="fstype" value="ext3"/>
>                <nvpair id="Filesystem_2_attr_3" name="options" value="noatime"/>
>              </attributes>
>            </instance_attributes>
>          </primitive>
>          <primitive class="lsb" id="cyrus-imapd_3" provider="heartbeat" type="cyrus-imapd">
>            <operations>
>              <op id="cyrus-imapd_3_mon" interval="60s" name="monitor" timeout="45s"/>
>            </operations>
>          </primitive>
>          <primitive class="lsb" id="saslauthd_4" provider="heartbeat" type="saslauthd">
>            <operations>
>              <op id="saslauthd_4_mon" interval="60s" name="monitor" timeout="45s"/>
>            </operations>
>          </primitive>
>        </group>
>        <clone id="pingd">
>          <instance_attributes id="pingd">
>            <attributes>
>              <nvpair id="pingd-clone_node_max" name="clone_node_max" value="1"/>
>            </attributes>
>          </instance_attributes>
>          <primitive id="pingd-child" provider="heartbeat" class="ocf" type="pingd">
>            <operations>
>              <op id="pingd-child-monitor" name="monitor" interval="20s" timeout="40s" prereq="nothing"/>
>              <op id="pingd-child-start" name="start" prereq="nothing"/>
>            </operations>
>            <instance_attributes id="pingd_inst_attr">
>              <attributes>
>                <nvpair id="pingd-dampen" name="dampen" value="5s"/>
>                <nvpair id="pingd-multiplier" name="multiplier" value="100"/>
>              </attributes>
>            </instance_attributes>
>          </primitive>
>        </clone>
>      </resources>
>      <constraints>
>        <rsc_location rsc="group_1" id="rsc_location_group_1">
>          <rule id="prefered_location_group_1" score="200">
>            <expression attribute="#uname" id="prefered_location_group_1_expr" operation="eq" value="castor"/>
>          </rule>
>          <rule id="group_1:connected:rule" score="-INFINITY" boolean_op="and">
>            <expression id="my_resource:connected:expr:zero" attribute="pingd" operation="lte" value="0"/>
>          </rule>
>        </rsc_location>
>      </constraints>
>    </configuration>
>  </cib>

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