Cluster administration - SAP HANA on AWS

Cluster administration

To manually migrate the cluster resources from one node to another, run the following command: 

prihana:~ # crm resource move msl_SAPHana_HDB_HDB00 force
INFO: Move constraint created for msl_SAPHana_HDB_HDB00
INFO: Use `crm resource clear msl_SAPHana_HDB_HDB00` to remove this constraint

Check the status of the migration using the command “crm_mon –r”. 

prihana:~ # crm_mon -r
Stack: corosync
Current DC: prihana (version 1.1.18+20180430.b12c320f5-3.24.1-b12c320f5) - partition with quorum
Last updated: Thu Nov 12 12:39:00 2020
Last change: Thu Nov 12 12:38:47 2020 by root via crm_attribute on prihana

2 nodes configured
6 resources configured

Online: [ prihana sechana ]

Full list of resources:

res_AWS_STONITH (stonith:external/ec2): Started prihana
res_AWS_IP      (ocf::suse:aws-vpc-move-ip):    Started sechana
 Clone Set: cln_SAPHanaTopology_HDB_HDB00 [rsc_SAPHanaTopology_HDB_HDB00]
     Started: [ prihana sechana ]
 Master/Slave Set: msl_SAPHana_HDB_HDB00 [rsc_SAPHana_HDB_HDB00]
     rsc_SAPHana_HDB_HDB00      (ocf::suse:SAPHana):    Promoting sechana
     Slaves: [ prihana ]

After the resource is migrated, you can check the status of the cluster. Clean up the failed actions as shown in next section. 

prihana:~ # crm status
Stack: corosync
Current DC: prihana (version 1.1.18+20180430.b12c320f5-3.24.1-b12c320f5) - partition with quorum
Last updated: Thu Nov 12 12:41:07 2020
Last change: Thu Nov 12 12:40:44 2020 by root via crm_attribute on prihana

2 nodes configured
6 resources configured

Online: [ prihana sechana ]

Full list of resources:

 res_AWS_STONITH        (stonith:external/ec2): Started prihana
 res_AWS_IP     (ocf::suse:aws-vpc-move-ip):    Started sechana
 Clone Set: cln_SAPHanaTopology_HDB_HDB00 [rsc_SAPHanaTopology_HDB_HDB00]
     Started: [ prihana sechana ]
 Master/Slave Set: msl_SAPHana_HDB_HDB00 [rsc_SAPHana_HDB_HDB00]
     Masters: [ sechana ]
     Slaves: [ prihana ]

Failed Actions:
* rsc_SAPHana_HDB_HDB00_monitor_61000 on prihana 'not running' (7): call=35, 
status=complete, exitreason='',
    last-rc-change='Thu Nov 12 12:39:49 2020', queued=0ms, exec=0ms