Cisco Cisco C880 M4 Storage Subsystem Libro bianco

 

 

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SAP HANA Failover Test (Scale-Out Only) 

If a SAP HANA node is reset by the master name server, a log entry is written in the /var/log/messages file of the 

master name server. 

Aug 26 17:24:54 server01 logger: STONITH HANA Node:server05 

Aug 26 17:24:55 server01 logger: anaadm Resetting the HANA Node server05 
because of an Nameserver reset command 

Aug 26 17:25:58 server01 logger: anaadm HANA Node server05 switched from ON to 
OFF 

Aug 26 17:27:00 server01 logger: anaadm HANA Node server05 switched from OFF 
to ON 

Aug 26 17:27:01 server01 logger: anaadm Release NFS locks of HANA Node 
server05 done, system is booting 

 

Make sure that all nodes respond to the ipmitool command. 

Make sure that all management IP addresses are in the /etc/host file of the appliance. 

mgmtsrv01:/opt/Cisco/scripts # grep ipmi /etc/hosts 

192.168.76.28   server03-ipmi  

192.168.76.29   server01-ipmi  

192.168.76.37   server04-ipmi  

192.168.76.38   server02-ipmi  

mgmtsrv01:/opt/Cisco/scripts # 

 

If the SAP HANA master name server is “killing” one of the nodes, a status message is written in the 

/var/log/messages file of the master name server. The output looks like the following text. The default response of 

the STONITH process is to reboot the node. 

cishana01:/hana/shared # grep logger /var/log/messages 

 Aug 17 02:52:13 cishana01 logger: STONITH HANA Node:cishana02 

 Aug 17 02:52:13 cishana01 logger: anaadm Resetting the HANA Node cishana02 
because of an Nameserver reset command 

 Aug 17 02:52:27 cishana01 logger: anaadm HANA Node cishana02 switched from ON 
to OFF 

 Aug 17 02:52:35 cishana01 logger: anaadm HANA Node cishana02 switched from OFF 
to ON 

 Aug 17 02:52:35 cishana01 logger: anaadm Release NFS locks of HANA Node 
cishana02 done, system is booting 

 cishana01:/hana/shared #