HP StorageWorks 9100 Extreme Data Storage System administration guide V1.0.2 (AN540-96018, February 2010)

You can use the mxconsole or mx(8) commands to modify configurations that were initially created
by exdsmgr. Even where you cannot use exdsmgr to make a change, the command will show the
affects of changes made using mxconsole or mx(8).
Restrictions on use of mxconsole and mx(8)
You can use the full functionality of the Matrix software to customize and manage applications on an
HP ExDS9100 system. However, a number of restrictions apply because the HP ExDS9100 system
software uses Matrix functionality to implement some of its management functions. The restrictions are
as follows:
• Do not modify the parameters, delete or unmount the utility filesystem /var/mxso (typically on
psv1).
• Do not modify the parameters, delete or disable the exdsadmin virtual host (vhost). You can
identify the IP address of this virtual host as follows:
# grep exdsadmin /etc/hosts
• Do not modify or disable the mxsomond service monitor.
• Do not modify or disable the mysqld service monitor (see Customizing_mySQL for more information).
Issuing commands to groups of hosts
Use the pdsh(1) command to issue a command to groups of hosts in parallel. The command is
similar to ssh except that the hosts are specified by the -w argument. You can also specifiy several
hosts using a hostlist expression. For example, to check the hostnames of each server, run the following
command:
NOTE:
The results are not necessarily ordered.
You can use the dshbak(1) command in with pdsh to format the pdsh output so it is more readable.
With the -c option, it also combines hosts with identical output, which makes it easier to spot outliers.
For example:
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