[Linux-HA] Problem with migrate applications

[Женя Женя]

      Hello everyone.        

     

      I have installed heartbead-2 on three nodes. APS-1, APS-2, APS-3        

      On First node (asp-1) should be started the following services:        

      Virtual IP 10.11.4.1        

      Apache        

      My applications        

      On second node (aps-2) should be started following services:        

      Virtual IP        

      Mysql        

      On the Third node (aps-3) should be started the services from node aps-1 or aps-2 in case if one of these nodes will down.        

     

      But I don’t understand completely how this should be realized.        

     

      For test I created one group for APS-2:        

      <group id="mysql">        

               <primitive class="heartbeat" id="mysql_drbd" provider="heartbeat" type="drbddisk">        

                 <instance_attributes id="bf312125-6c8a-4486-a20d-183dde81b454">        

                   <attributes>        

                     <nvpair id="mysql_drbd_attr_1" name="drbd_mysql" value="mysql"/>        

                   </attributes>        

                 </instance_attributes>        

                 <operations>        

                   <op id="op-mysql_drbd0-1" name="monitor" interval="5s" timeout="10s" role="Master"/>        

                   <op id="op-mysql_drbd0-2" name="monitor" interval="6s" timeout="10s" role="Slave"/>        

                 </operations>        

               </primitive>        

               <primitive id="ip-mysql" class="ocf" type="IPaddr2" provider="heartbeat">        

                 <instance_attributes id="879dbf30-7b59-4e2b-8b94-cbf3abea6a97">        

                   <attributes>        

                     <nvpair id="IPaddr_10_11_4_2_attr_0" name="ip" value="10.11.4.2"/>        

                     <nvpair id="IPaddr_10_11_4_2_attr_1" name="netmask" value="16"/>        

                     <nvpair id="IPaddr_10_11_4_2_attr_2" name="nic" value="eth0"/>        

                   </attributes>        

                 </instance_attributes>        

                 <operations>        

                   <op id="op-ip-mysql" name="monitor" interval="10s" timeout="15s"/>        

                 </operations>        

               </primitive>        

             </group>        

     

      And wrote the following constraints.        

      <constraints>        

             <rsc_location id="ip-mysql-2" rsc="mysql" node="aps-2" score="100"/>        

             <rsc_location id="ip-mysql-3" rsc="mysql" node="aps-3" score="50"/>        

             <rsc_location id="ip-mysql-1" rsc="mysql" node="aps-1" score="-INFINITY"/>        

           </constraints>        

     

      In case when I stop heartbeat service on aps-2 node. This group migrates to aps-1 node. But should be migrating to aps-3.        

      Please explain me, what I do wrong?        

      Or please give me advice how I should correctly configured my config.        

     

      Thanks in advice.