I ran into the case of non-responding WebUI to manage LUNs (and other things) on a IBM Storwize v7000.
You can only run satask commands if you connected to the CLI using the SSH private key which is associated with the user called superuser. No other SSH key will allow you to run satask commands:
panel_name cluster_id cluster_name node_id node_name relation node_status error_data
01-1 00000100204029A2 SAN1 1 node1 local Active
01-2 00000100204029A2 SAN1 2 node2 partner Active
To find out which node is the configuration node, run the following command
sainfo lsservicestatus <Active panel name>
the following line tells you which node is the config node:
IBM_Storwize:SAN1:superuser>sainfo lsservicestatus 01-1
Use the following command to restart the web service on the configuration node
satask restartservice -service tomcat 01-1
Wait at least 5 minutes for the service to restart before assuming that this has failed
If this do no’t solve your problems, you should restart the cannister with configuration node on it. Remember to connect to the Node that’s not configuration node. And restart the “partner”. If unable to get it reset, reset the canister physically. that is, pull it out a few inches from the chassis and then insert it again after 30 seconds.