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Chapter 7. Highly Available controller pairs 91

CPU type 0xF29: 2800MHz

Total memory: 0x80000000 bytes (2048MB)

CFE>

The same result can be accomplished by using the command cf disable followed by the

halt command.

From the CFE prompt or the boot LOADER prompt (depending on the model), the system can

be rebooted by using the boot_ontap command.

7.4.3 Basic HA pair configuration management

This section describes HA pair configuration management, including forced HA pair takeover

and giveback.

Run the cf takeover command on the node that remains operating and take over resources

of the other node. In the example, take the node itsosj_n2 offline by running the cf takeover

command on node itsosj_n1.

Starting takeover by using the CLI

Complete the following steps if you are working from a command line:

1. Check the HA pair status with the cf status command, as shown in Example 7-9.

Example 7-9 cf status: Check status

itsonas2> cf status

Cluster enabled, itsonas1 is up.

itsonas2>

2. Run the cf takeover command. Example 7-10 shows the console output during takeover.

Example 7-10 cf takeover command

itsonas2> cf takeover

cf: takeover initiated by operator

itsonas2> Sat Apr 9 02:00:22 GMT-7 [itsonas2: cf.misc.operatorTakeover:warning]: Cluster

monitor: takeover initiated by operator

Sat Apr 9 02:00:22 GMT-7 [itsonas2: cf.fsm.nfo.acceptTakeoverReq:warning]: Negotiated

failover: accepting takeover request by partner, reason: operator initiated cf takeover.

Asking partner to shutdown gracefully; will takeover in at most 180 seconds.

Sat Apr 9 02:00:33 GMT-7 [itsonas2: cf.fsm.firmwareStatus:info]: Cluster monitor: partner

rebooting

Sat Apr 9 02:00:33 GMT-7 [itsonas2: cf.fsm.takeoverByPartnerDisabled:notice]: Cluster

monitor: takeover of itsonas2 by itsonas1 disabled (interconnect error)

Sat Apr 9 02:00:33 GMT-7 [itsonas2: cf.fsm.nfo.partnerShutdown:warning]: Negotiated

failover: partner has shutdown

Sat Apr 9 02:00:33 GMT-7 [itsonas2: cf.fsm.takeover.nfo:info]: Cluster monitor: takeover

attempted after 'cf takeover'. command

Attention: Taking over resources affects the client environment. In particular, Windows

users and shares (CIFS services) are affected by this procedure.

IBM N Series Hardware Guide

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