Troubleshooting Control Center Problems

The main problem you might encounter when working with the Control Center relates to the CPDB connection: either the connection between the Control Center and the CPDB is down, or parameters are incorrectly configured in the Control Center database.

To determine which of these two problems you might be encountering:

1. Log in as an administrator in the Control Center using the browser.

2. In the configuration tools section, select I-Fabrics to bring up a list of I-Fabrics.

3. On the I-Fabrics List, select the I-Fabric whose connection needs to be checked.

4. Click OK when the following dialog displays: Improper Configuration of these Properties may disrupt System Operation. Proceed with Caution.

5. In the Property Name Property Value dialog, take note of the IP address of the database server (defined at the field primary) and its port.

6. If no IP address is listed, telnet to the hostname of the URL on which the Control Center runs.

7. Try the telnet command (assuming 10.0.0.18 and 1521 are the IP address and port obtained at step 4):

   telnet 10.0.0.18 1521

   Trying 10.0.0.18...

   If you see the following response:

   Connected to cpdb

   Escape character is "^]"

the connection is okay. Type Ctrl-C to cancel the telnet session.

If you see the following response:

telnet: Unable to connect to remote host: Connection refused

the IP is okay, but the CPDB database server is not running (or it is running on a different port). Contact your DBA or consult the database manufacturer's documentation for information on how to verify the listener port.

ping 10.0.0.18

If you see the following result:

no answer from 10.0.0.18

no communication exists between the Control Center and the database server hosts exists. This error might be caused by a routing problem or by the database server being down.

Connecting to the CPDB

The connection from the Control Center to the CPDB might be too slow at times causing a timeout. This condition might be caused by either the database or the network being slow due to overwhelming workload. To prevent a timeout when the connection is slow, increase the value in the timeout field in the I-Fabric Properties screen in the Control Center. The default is 30 seconds.

To Increase the Timeout Interval

Steps

1. Login to the Administration screen of the Control Center.

2. Select I-Fabrics under Configuration Tools.

   An I-Fabrics List and I-Fabrics Properties screen appear.

3. Increase the value in the Timeout field.

   If this property does not yet exist you can create it by clicking the Add Property button.