IBM SG24-5131-00 Manual de usuario descargar pdf (Pagina 130)

112 IBM Certification Study Guide AIX HACMP

4.4.2 Initial Startup

At this point in time, the cluster is not yet started. So the cluster manager has

to be started first. To check whether the cluster manager is up, you can either

look for the process with the

ps command:

ps -ef | grep clstr

or look for the status of the cluster group subsystems:

lssrc -g cluster

or look for the status of the network interfaces. If you have IP Address

Takeover (IPAT) configured you should see that the network interface is on its

boot address with the

netstat -i command.

Then start HACMP through

smit clstart. In the panel that appears, choose

the following parameters and press Enter:

1. start now

2. broadcast message true

3. start cluster lock services false

4. start cluster information daemon true

Reissue either the

ps command (see above) or look for the interface state

with the

netstat -i command. Now, you should see that the boot interface is

gone in favor of the service-interface.

You also would like to check whether a takeover will work, so, you have to

bring up HACMP on all cluster nodes through

smitty clstart and check

whether the cluster gets into a stable state. Use

clstat for this purpose.

4.4.3 Takeover and Reintegration

When the cluster is up and running, stop one of the node’s cluster managers

with

smitty clstop and choose graceful with takeover. One possibility to

check whether the takeover went through smoothly is to look at the

/tmp/hacmp.out file during the takeover, preferably on the takeover node. You

can use the

tail -f /tmp/hacmp.out command for this.

After the cluster has become stable, you might check the

netstat -i output

again to verify that the takeover node has acquired the IP address of the

“failed” node.

1 2 ... 125 126 127 128 129 130 131 132 133 134 135 ... 239 240

Sin comentarios

IBM SG24-5131-00 Manual de usuario Pagina 130