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Before changing the IP address or host name of one or more managed nodes in the HPOM database, opc_node_change.pl verifies that the new IP address and host name can be resolved on the management server and that they are not already used by other managed nodes. The tool also verifies that all management server processes including the database processes are running. On the managed node, opc_node_change.plensures that the new IP address is configured with the HPOM agent software. If the host name has changed, all currently assigned policies are redistributed.
# /opt/OV/bin/OpC/utils/opc_node_change.pl -help usage: opc_node_change.pl [-h[elp]] -oldname OLD_FQDN -oldaddr OLD_IP_ADDR -newname NEW_FQDN -newaddr NEW_IP_ADDR[,NEW_IP_ADDR,...] [-nnmupdate -netmask 999.999.999.999 -macaddr XX:XX:XX:XX:XX:XX [-hook CMDNAME] [-nnmtopofix]]
See also: HP Operations Manager Administratorís Reference
But what can be done if the script fails? For example, the following errors might be retrieved:
!!ERROR: New hostname 'a.b.c.com' and new IP address(es) '10.20.30.40' do not match -- cannot modify node a.b.c.com! !!ERROR: Node a.b.c.com (IP Addr 10.20.30.40) is not a managed node name -- cannot modify node a.b.c.com!
This article describes a way to get debug output from the opc_node_change.pl perl script.
opc_node_change.pl's logfile is opc_node_change.log which is located in /var/opt/OV/share/log. But this does only contain the errors which are printed to the shell prompt anyway.
To get verbose and debug output, edit /opt/OV/bin/OpC/utils/opc_node_change.pl and change the following variables in package main:
package main; my $opt_verbose = 0; my $opt_debug = 0;
package main; my $opt_verbose = 1; my $opt_debug = 1;
Save and rerun opc_node_change.pl.
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