
Chapter 6. Cluster Testing
Before you start to test the HACMP configuration, you need to guarantee that your cluster nodes are in a stable state. Check the state of the:
•Devices
•System parameters
•Processes
•Network adapters
•LVM
•Cluster
•Other items such as SP Switch, printers, and SNA configuration
6.1Node Verification
Here is a series of suggested actions to test the state of a node before including HACMP in the testing.
6.1.1Device State
•Run diag -a in order to clean up the VPD.
•Look in the errorlog for unusual errors by issuing the command errpt more or errpt
•Check that all devices are in the available state ( lsdev
•Check that the SCSI addresses of adapters on shared buses are unique (lsattr
•If you are using target mode SCSI networks, check the connection by issuing cat < /dev/tmscsi#.tm on the first node and cat /etc/hosts > /dev/tmscsi#.im (enter twice!) on the second node where # is the appropriate tmscsi device number. Repeat the test in the other direction. Note that cluster services must be stopped on both nodes to perform this test.
•To check a serial line between two nodes type stty < /dev/tty# on both nodes where # is the appropriate tty device number for the RS232 heartbeat connection. Note that cluster services must be stopped on both nodes to perform this test.
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