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Converting the Standalone Controller

Starting the

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Primary Controller Instance

The Standalone Controller automatically becomes the active Primary Controller instance in a cluster. This change of role does not require the Standalone Controller being restarted.

For successful execution of the subsequent steps the Controller instance has to be started.

Preparing the

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Secondary Controller Instance

Users have to prepare the standby Secondary Controller instance to its role:

• Users should specify the standby role from the Controller instance's controller.conf file:

  Code Block
  title controller.conf file for Standby Secondary Controller Instance
  # Cluster configuration js7.journal.cluster { node { is-backup = yes } }

  For details see JS7 - Controller Configuration Items

• Users should remove an existing journal of the standby Secondary Controller instance. More precisely users should remove the contents of the standby Secondary Controller instance's state folder.

Starting the

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Secondary Controller Instance

In a next step the standby Secondary Controller instance is started like this:

# starting the Standby Controller instance for Unix from the command line
./controller_instance.sh start

# starting the Standby Controller instance for Unix from systemd
sudo systemctl start controller.service

@rem starting the Standby Controller instance for Windows from the command line
.\controller_instance.cmd start

@rem starting the Standby Controller instance Windows Service from the command line
.\controller_instance.cmd start-service

@rem alternatively the Standby Controller instance can be started from the Windows Service Panel

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The radio buttons Standalone and Cluster determine the Controller type.

• Users should modify the Controller type Type to Cluster.
• For the Primary Controller instance users should enter the URL of the current Standalone Controller that is intended to act as the active Controller instance in a cluster.
• For the Secondary Controller instance users should enter the URL of the standby Controller instance.
• For the Cluster Watch Agent the respective URL has to be added.
  
  

The Test Connection buttons can be used to verify if JOC Cockpit can establish a connection to both Controller instances.

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