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Migrating and SAP HANA Primary
HDB资源之主备切换
Pre move
- Set the rsc_SAPHana_SLE_HDB00 to be maintenance.
~# crm resouce maintenance rsc_SAPHana_SLE_HDB00
saprep01:~ # crm status detail
Stack: corosync
Current DC: saprep01 (1) (version 1.1.15-19.15-e174ec8) - partition with quorum
Last updated: Tue Aug 8 16:02:14 2023
Last change: Tue Aug 8 15:52:13 2023 by root via crm_resource on saprep01
2 nodes configured
6 resources configured
Online: [ saprep01 (1) saprep02 (2) ]
stonith-sbd (stonith:external/sbd): Started saprep01
rsc_ip_SLE_HDB00 (ocf::heartbeat:IPaddr2): Started saprep02
Master/Slave Set: msl_SAPHana_SLE_HDB00 [rsc_SAPHana_SLE_HDB00] (unmanaged)
rsc_SAPHana_SLE_HDB00 (ocf::suse:SAPHana): Slave saprep01 (unmanaged)
rsc_SAPHana_SLE_HDB00 (ocf::suse:SAPHana): Master saprep02 (unmanaged)
Clone Set: cln_SAPHanaTopology_SLE_HDB00 [rsc_SAPHanaTopology_SLE_HDB00]
rsc_SAPHanaTopology_SLE_HDB00 (ocf::suse:SAPHanaTopology): Started saprep01
rsc_SAPHanaTopology_SLE_HDB00 (ocf::suse:SAPHanaTopology): Started saprep02
Started: [ saprep01 saprep02 ]
Manual Takeove Process
- Stop the primary SAP HANA database system.
~$ sapcontrol -nr 0 -function StopSystem HDB
- Start the takeover on the secondary SAP HANA database system.
~$ hdbnsutl -sr_takeover
- Register the former primary to become the new secondary.
~$ hdbnsutil -sr_register --name=DRSITE01 --remoteHost=saprep02 --remoteInstance=00 --replicationMode=async --operationMode=logreplay
- Start the new secondary SAP HANA database system.
~$ sapcontrol -nr 0 -function StartSystem HDB
Post Migrate
- Wait some time till SAPHanaSR-showAttr shows both SAP HANA database systems to be up again (field roles must start with the digit 4). The new secondary should have role "S" (for secondary).
- Tell the cluster to forget about the former master-slave roles and to re-monitor the failed master. The command could be submitted on any cluster node as user root.
saprep01:~ # crm resource refresh rsc_SAPHana_SLE_HDB00
- Set the master/slave resource to the status managed again. The command could be submitted on any cluster node as user root.
~# crm resouce maintenance rsc_SAPHana_SLE_HDB00 off
== Check === crm status detail
或
crm_mon -R -A
saprep01:~ # crm status detail
Stack: corosync
Current DC: saprep01 (1) (version 1.1.15-19.15-e174ec8) - partition with quorum
Last updated: Tue Aug 8 16:22:26 2023
Last change: Tue Aug 8 16:22:02 2023 by hacluster via crmd on saprep02
2 nodes configured
6 resources configured
Online: [ saprep01 (1) saprep02 (2) ]
stonith-sbd (stonith:external/sbd): Started saprep01
rsc_ip_SLE_HDB00 (ocf::heartbeat:IPaddr2): Started saprep01
Master/Slave Set: msl_SAPHana_SLE_HDB00 [rsc_SAPHana_SLE_HDB00]
rsc_SAPHana_SLE_HDB00 (ocf::suse:SAPHana): Master saprep01
rsc_SAPHana_SLE_HDB00 (ocf::suse:SAPHana): Slave saprep02
Masters: [ saprep01 ]
Slaves: [ saprep02 ]
Clone Set: cln_SAPHanaTopology_SLE_HDB00 [rsc_SAPHanaTopology_SLE_HDB00]
rsc_SAPHanaTopology_SLE_HDB00 (ocf::suse:SAPHanaTopology): Started saprep01
rsc_SAPHanaTopology_SLE_HDB00 (ocf::suse:SAPHanaTopology): Started saprep02
Started: [ saprep01 saprep02 ]# crm_mon -R -A
# crm status --show-detail --show-node-attributes
Stack: corosync
Current DC: saprep01 (1) (version 1.1.15-19.15-e174ec8) - partition with quorum
Last updated: Tue Aug 8 16:27:28 2023
Last change: Tue Aug 8 16:26:57 2023 by root via crm_attribute on saprep01
2 nodes configured
6 resources configured
Online: [ saprep01 (1) saprep02 (2) ]
stonith-sbd (stonith:external/sbd): Started saprep01
rsc_ip_SLE_HDB00 (ocf::heartbeat:IPaddr2): Started saprep01
Master/Slave Set: msl_SAPHana_SLE_HDB00 [rsc_SAPHana_SLE_HDB00]
rsc_SAPHana_SLE_HDB00 (ocf::suse:SAPHana): Master saprep01
rsc_SAPHana_SLE_HDB00 (ocf::suse:SAPHana): Slave saprep02
Masters: [ saprep01 ]
Slaves: [ saprep02 ]
Clone Set: cln_SAPHanaTopology_SLE_HDB00 [rsc_SAPHanaTopology_SLE_HDB00]
rsc_SAPHanaTopology_SLE_HDB00 (ocf::suse:SAPHanaTopology): Started saprep01
rsc_SAPHanaTopology_SLE_HDB00 (ocf::suse:SAPHanaTopology): Started saprep02
Started: [ saprep01 saprep02 ]
Node Attributes:
* Node saprep01 (1):
+ hana_sle_clone_state : PROMOTED
+ hana_sle_op_mode : logreplay
+ hana_sle_remoteHost : saprep02
+ hana_sle_roles : 4:P:master1:master:worker:master
+ hana_sle_site : DRSITE01
+ hana_sle_srmode : async
+ hana_sle_sync_state : PRIM
+ hana_sle_vhost : saprep01
+ lpa_sle_lpt : 1691483217
+ master-rsc_SAPHana_SLE_HDB00 : 150
* Node saprep02 (2):
+ hana_sle_clone_state : DEMOTED
+ hana_sle_op_mode : logreplay
+ hana_sle_remoteHost : saprep01
+ hana_sle_roles : 4:S:master1:master:worker:master
+ hana_sle_site : DRSITE02
+ hana_sle_srmode : async
+ hana_sle_sync_state : SOK
+ hana_sle_vhost : saprep02
+ lpa_sle_lpt : 30
+ master-rsc_SAPHana_SLE_HDB00 : 100saprep01:~ # SAPHanaSR-showAttr Open live cib CIB-time: Tue Aug 8 16:22:36 2023 Hosts clone_state lpa_sle_lpt node_status op_mode remoteHost roles site srmode sync_state vhost --------------------------------------------------------------------------------------------------------------------------------------- 1 PROMOTED 1691482956 logreplay saprep02 4:P:master1:master:worker:master DRSITE01 async PRIM saprep01 2 DEMOTED 30 logreplay saprep01 4:S:master1:master:worker:master DRSITE02 async SOK saprep02 saprep01 online saprep02 online