Changing the Hostname/IP address¶
Change compute node definition relevant to the service node¶
Change the settings in database. Below shows a method to find out where the old IP address settings (take 10.6.0.1 as a example) are used in Hierarchy environment.
Query the old attribute
lsdef -t node -l | grep "10.6.0.1" # below is output of the above command. We can find out that nfsserver # and servicenode are using the old IP address setting. nfsserver=10.6.0.1 servicenode=10.6.0.1
Query the nodes whose nfsserver is 10.6.0.1
lsdef -w nfsserver==10.6.0.1 # below is output of the above command cn1 (node) cn2 (node) cn3 (node) cn4 (node)
Change the nfsserver address for cn1,cn2,cn3,cn4 by running the following command:
chdef -t node cn1-cn4 nfsserver=<new service node IP addresss>
Database Connection Changes¶
Granting or revoking access privilege in the database for the service node.
- For MySQL, refer to Granting/Revoking access to the database for Service Node Clients.
Update Provision Environment on Service Node¶
If you are using service nodes to install the nodes and using
for hostname resolution, you need to copy the new
/etc/hosts from the
management node to the service nodes, then run
makedns -n on the service
nodes. For example:
xdcp <servicenodes> /etc/hosts /etc/hosts xdsh <servicenodes> makedns -n
Reinstall the nodes to pick up all changes
nodeset <noderange> osimage=<osimagename>
Then use your normal command to install the nodes like rinstall, rnetboot, etc.