Handling IP address changes
Once system is deployed, its network infrastructure and configuration should not change. Specifically:
•All instance IP addresses should not change
•All services should continue to use the same ports
•All services and instances should continue to use the same network types
If any of the above change, the system may be unable to run workflow tasks and you will need to reinstall the system.
If you need to change the IP address of one or more instances, you can safely do that by removing
Safely changing an instance IP address
If you need to change the IP addresses for one or more instances in the system, use this procedure to manually change the IP addresses without risk of data loss.
For each instance whose IP address you need to change:
1.Move all services off of the instance. Distribute those services among all the other instances. For information, see Moving and scaling services.
2.On the instance from step 1, stop the run script using whatever tool or process you used to run it. For example, with systemd, run:
systemctl stop <product-name>.service
3.Remove the instance from the system. For information, see Removing instances.
4.Delete the installation directory from the instance.
5.Add the instance back to the system. For information, see Adding new instances.
After a network change
If a network infrastructure or configuration change occurs that prevents your system from functioning with its current network settings, you need to reinstall all instances in the system.
1.If the Administration App is accessible, back up your system components by exporting a package. For information, see Exporting packages.
2.On each instance in the system:
a.Navigate to the installation directory.
b.Stop the run script using whatever tool or process you used to run it. For example, with systemd, run:
systemctl stop <product-name>.service
c.Run bin/stop
d.Run the setup script, including the list of master instances:
sudo bin/setup -i <ip-address-for-this-instance> -m <comma-separated-list-of-master-instance-IP-addresses>
e.Run the run script using whatever methods you usually use to run scripts.
3.Log into Administration App and use the wizard to setup the system.
4.After the system has been setup, upload your package. For information, see Importing packages.
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