Migrate Your High Availability Configuration to Log Correlation Engine 6.0.4 or Later

You can use this method to upgrade your Log Correlation Engine 4.8.4 deployment with high availability to Log Correlation Engine 6.0.4 or later, then re-configure high availability. To configure high availability for the first time in Log Correlation Engine 6.0.4 or later, see Configure High Availability. For more information about high availability configurations, see High Availability.

Note: If you are upgrading from a version of Log Correlation Engine earlier than 4.8.4, upgrade to Log Correlation Engine 4.8.4 before upgrading to Log Correlation Engine 6.0.4 or later.

Tip: If you have another node available, you can keep the former standby node offline to use as an emergency backup in case you encounter issues after migration. If you want to keep your former standby node as a backup:

  • Skip step three in the procedure below to keep Log Correlation Engine installed on the former standby node.
  • Use the third node as the standby node in your new high availability configuration after upgrading to Log Correlation Engine 6.0.4 or later.

To upgrade from Log Correlation Engine 4.8.4 to Log Correlation Engine 6.0.4 or later and re-configure high availability:

  1. Log in to Log Correlation Engine via the command line interface (CLI).

  2. In the CLI in Log Correlation Engine, run the following commands on both the master node and the standby node to stop Log Correlation Engine :

    service stats stop

    /opt/lce/tools/stop_lce

    pkill -KILL keepalived 2>/dev/null

    Log Correlation Engine stops.

  3. (Optional) Make a copy of the master node activeDb.

  4. To remove Log Correlation Engine from the standby node, do the following:

    1. In the CLI in Log Correlation Engine, run the following commands:

      rpm -e lce

      rm -rf /opt/lce/

    2. If you configured archiveDb, run the following command:

      rm -rf <archiveDb directory>

    3. If you moved activeDb from the default directory /opt/lice/db/, run the following command:

      rm -rf <activeDb directory>

    4. If you moved tracelogsDir from the default directory /opt/lce/admin/log, run the following command:

      rm -rf <tracelongsDir directory>

  5. At the standby node, run the following command:

    rpm -ivh lce-6.0.4-.....

  6. At the master node, run the following command:

    rpm -Uvh lce-6.0.4-.....

  7. Configure high availability on the master node and the standby node, as described in Configure High Availability.

  8. At the master node, run the following command:

    nohup /opt/lce/tools/migrateDB-overseer --migrate-all --clear-source-on-success &

    Log Correlation Engine migrates silos to the master node's activeDb and copies them to the standby node's activeDb.

What to do next: