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MarketplaceSupport

Testing a ZooKeeper Cluster

Once the Zookeeper ensemble and RadiantOne FID nodes are installed, you can test access to the ZooKeeper cluster.

To test a Zookeeper cluster:

  1. On a machine that is running RadiantOne FID, open a Command Processor.

  2. At the command line, navigate to <RLI_HOME>\bin\advanced. With a default RadiantOne FID installation, this location would be as follows (on Windows).

    c:\radiantone\vds\bin\advanced

  3. Run the following command.

    cluster.bat check

If Zookeeper is functional on all nodes, “SUCCESS” messages similar to the following are displayed.

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In the following image, one Zookeeper node has gone offline. In this example, RadiantOne nodes are unable to connect to the Zookeeper node at 10.11.10.39.

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In the following image, two Zookeeper nodes have gone offline. If the ZooKeeper ensemble only had three nodes to begin with, the loss of two nodes puts the service in a non-functional state since the quorum has been lost. The RadiantOne nodes are impacted at this point and will enter into a read-only mode where they cannot accept configuration changes nor client write operations.

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