HP Insight Cluster Management Utility - Manual (Page 165)

3. Verify that rsh or ssh is enabled between all nodes of the cluster and the management node.
All nodes must be able to execute commands as root for any other node without needing a
password
4. Verify that the HP Insight CMU rpm is properly installed on all nodes.
If the HP Insight CMU GUI is unable to start, with the message "Failed to validate certificate":
Figure 63 Certificate error
The detailed Java exception is:
java.security.cert.CertPathValidatorException: java.security.InvalidKeyException: Wrong key usage
Change the Java setting value. (The default value changed between Java 1.6 u31 and Java 1.7
u12.)
If you are connected to the Internet, then activate Enable online certificate validation. If you are
not connected to the Internet, then deactivate Enable online certificate validation.
Figure 64 Java control panel
A.6 GUI problems 165