Cluster maintenance commands for HANA System Replication

 

Bases on requirement and situation we will execute the below command for HANA System Replication Cluster maintenance.

1. How to check HA Configuration?
    crm configure show

2. Check HA Status?
   crm status

3. Putting HA Node in Maintenace Mode?
crm mainteanance <hostname>

4. Manually Starting Specific HA Node Resource?
crm resource start <resource name> <hostname>

5. How to clean up old configuration Files ?
crm resource cleanup <Rsc_esource name><hostname>

6. How to disable Maintenace Mode in HA?
crm configure property maintenance-mode=false

7.How to disable Stonith Service in cluster?
crm configure property stonith-enabled=false

8. How to Start Cluster in HA?
crm cluster start

9. How to Stop Cluster in HA?
crm cluster stop

10. How to Restart Cluster?
crm cluster restart

11. How to see cluster Status?
crm cluster status

12.Starting the cluster stack on one node?
systemctl start pacemaker

13.Stopping the cluster stack on one node?
systemctl stop corosync

14.Restarting the cluster stack on one node?
systemctl restart corosync

15. How to check the HA/DR Status
Hdbnsutil -sr_state

16. How to break replication between Primary and Secondary Node i.e HA Enviroment (With SIDADM User)
hdbnsutil -sr_unregister –id=abc

17. How to register and establish the HA Nodes ( With SIDADM User)
hdbnsutil -sr_register –name=msap –remoteHost=msap00081 –remoteInstance=00 –replicationMode=async —
operationMode=logreplay

18. How to check HA Configuration Entries Log files?
cat /etc/default/grub | grep GRUB_CMLINE_LINUX_DEFAULT

19. How to restart kdumpstatus ?
servicekdump status

OTHER HA/DR STATUS COMMANDS:

20. How to check HA/DR Status with SIDADM User in details.
hdbcons -e hdbindexserver “replication info”

21. How to check the HA/DR Status with Python Script using SIDADM User
>> Give Command: cdpy>> It will directly map to python script directory
Python systemReplicationstatus.py

22: How to check HA/DR Status with root user?
cmviewcl

23. All HA/DR Configuration stores in this below location
/opt/cmcluster/run

24. How to Start Multi Node HANA DB?
sapcontrol -nr 00 -function StartSystem HDB 1000 500

25. How to check Multi Node HANA DB Services status?
ssapcontrol -nr 00 -function GetSystemInstanceList

26. How to check HANA Services Status of single node.
sapcontrol -nr 00 -function GetProcessList

27. How to Stop Multi Node HANA DB Instances?
sapcontrol -nr 20 -function StopSystem HDB

28. How to Start Multi Node HANA DB Instances?
sapcontrol -nr 20 -function StartSystem HDB

29. How to Check HANA Process on OS Level related to Indexserver?
ps -ef | grep indexserver

30. How to check HANA Process on OS Level related to HANA DB?
HDB proc or HDB info

Conclusion :

In this Blog, we have explained the  SAP HANA SYSTEM Replication Cluster maintenance details, Configuration and maintenance commands.