Cloudera Docs

Promoting ECS Agents to ECS Servers

After installing the Load Balancer, you must reconfigure the existing Embedded Container Service (ECS) Agents to ECS Servers. This process is referred to as promoting the agents to servers. You must promote only one agent at a time.

In this example we will promote the ECS agent on agent1.example.com and then promote the ECS agent on agent2.example.com.

  1. In Cloudera Manager, select the ECS cluster, then click ECS. Stop the ECS agent running on agent1 and then delete the agent.
  2. In ECS, click Add Role Instances.
  3. Add the available host agent1 as an ECS server in the Add Role Instances to ECS pop-up. Click OK.
  4. Click Continue.
  5. Start the new ECS server from the ECS Instances view. For example, start the ECS server on agent1.
  6. Confirm the node’s status from the Web UI or the command line by running the following command: 
    sudo /var/lib/rancher/rke2/bin/kubectl --kubeconfig=/etc/rancher/rke2/rke2.yaml get nodes
When agent1 is ready, you can promote agent2. To promote agent2, perform steps 1-8 again using agent2.example.com.