#hostname //Display hostname
#uname –n //Display node name
In one machine, both function the same;
However, in a dual-machine system or a multi-machine cluster, hostname displays the external host name;
uname displays one of the node names (nodename).
Modify the hostname:
Temporarily effective (invalid after restart):
# hostname NEW_HOSTNAME和#uname -S NEW_HOSTNAME
Permanently effective:
smit hostname or directly use the command chdev -l inet0 -a hostname=NEW_HOSTNAME