Q1. |
How to migrate from local to the cluster mode?
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| If you intend to migrate your production system from the local (non-cluster) to the cluster mode, follow these
steps:
Update the configuration to the cluster mode as explained above on your main server.
Use the same configuration on other cluster nodes.
Move the index and value storage to the shared file system.
Start the cluster.
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Q2. |
Why is startup failed with the "Port value out of range" error?
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| On Linux, your startup is failed if you encounter the following error: [INFO] Caused by: java.lang.IllegalArgumentException: Port value out of range: 65536 This problem happens under specific circumstances when the JGroups networking library behind the clustering
attempts to detect the IP to communicate with other nodes.
You need to verify: |
Q3. |
How to solve the "failed sending message to null" error?
|
| If you encounter the following error when starting up in the cluster mode on Linux: Dec 15, 2010 6:11:31 PM org.jgroups.protocols.TP down
SEVERE: failed sending message to null (44 bytes)
java.lang.Exception: dest=/228.10.10.10:45588 (47 bytes) Be aware that clustering on Linux only works with IPv4. Therefore, when using a cluster under Linux, add the
following property to the JVM parameters:
-Djava.net.preferIPv4Stack=true |