Issue

• Could we change controllers and workers AMIs on our CJE cluster?

Environment

• CloudBees Jenkins Enterprise - AWS

Resolution

This method change controllers and workers AMIs, take care that one controller is up and running before restart the next one, these are the steps:

1 - Modified .dna/project.config file to set ami to your AMI ID (for example ami-52836d28) on every controller, worker and the default ami

[controller]
...
ami = ami-52836d28
...

[worker]
...
ami = ami-52836d28
...

[storage]
...
ami = ami-52836d28
...

[controller-1:controller]
...
ami = ami-52836d28
...

[controller-2:controller]
...
ami = ami-52836d28
...

[controller-3controller]
...
ami = ami-52836d28
...

[worker-1:worker]
...
ami = ami-52836d28
...

[worker-2:worker]
...
ami = ami-52836d28
...

[worker-3:worker]
...
ami = ami-52836d28
...

2 - Upgrade your project configuration

cje upgrade --config-only --force

3 - Stop all Managed Masters on CJOC

4 - Restart every controller one by one , check that the controller is up and running with dna connect controller-X

cje prepare controller-restart

edit the file setting the controller name

cje apply

5 - restart workers

cje prepare worker-restart

edit the file setting the correct name of the worker

cje apply

6 - Start all Manage Masters