Problem: Cannot Create A Cluster; Problem: Unknown Service Address Of A Node Canister - IBM Storwize V7000 Troubleshooting And Maintenance Manual

v If you are not logging in as superuser, contact your system administrator who can verify your user
name and reset your account password.
v If the user name that you are using is authenticated through a remote authentication server, verify that
the server is available. If the authentication server is unavailable, you can log in as user name
superuser. This user is always authenticated locally.
v If you do not know the password for superuser, go to "Procedure: Resetting superuser password" on
page 40.

Problem: Cannot create a cluster

This topic helps if your attempt to create a cluster has failed.
The failure is reported regardless of the method that you used to create a cluster:
v USB key
v Service assistant
v Service command line
The create cluster function protects the system from loss of volume data. If you create a cluster on a
control enclosure that was previously used, you lose all of the volumes that you previously had. To
protect against accidental creation of a cluster on a system that has required volume data, you have to
follow the procedure to delete a cluster before you create a new one. For more information, go to
"Procedure: Deleting a cluster completely" on page 45.
Use data that is returned by "Procedure: Getting node canister and cluster information using the service
assistant" on page 41 or "Procedure: Getting node canister and cluster information using a USB key" on
page 42 to check the following items:
v The node canister that you are attempting to create a cluster on is in candidate state. The node canister
is in candidate state if it is a new canister.
v The partner node canister in the control enclosure is not in active state.
v The latest cluster ID of the control enclosure is 0.
If the node canister that you are attempting to create the cluster on is in service state, fix the reported
node errors. For more information, go to "Procedure: Fixing node errors" on page 45. After the node error
is corrected, attempt to create a cluster again.
If the reason the create cluster function failed is because this node or the other node in the cluster has
cluster data or the enclosure cluster ID is not 0, fix the existing cluster versus re-creating a new cluster. If
you want to create a cluster and do not want to use any data from the volumes used in the previous
cluster, go to "Procedure: Deleting a cluster completely" on page 45, and then run the create cluster
function again.

Problem: Unknown service address of a node canister

This topic describes the methods that you can use to determine the service address of a node canister.
v If you can access the management GUI, start the service assistant on the cluster configuration node by
pointing your browser to the address: cluster address/service. For example, if your cluster address is
11.22.33.44, point your browser to 11.22.33.44/service.
The service assistant home page lists the node canister within the cluster that it can communicate with.
If the service address of the node canister that you are looking for is listed in the Change Node
window, make the node the current node. Its service address is listed under the Access tab of the node
details. Use the service address to connect to the node or continue to manage the node using this
session. If the service address of the node you want is not listed, go to "Procedure: Getting node
canister and cluster information using a USB key" on page 42 to get the service address.
Chapter 5. Resolving a problem
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