Cloudera Docs

Enabling ECS Server deployment for High Availability

Learn how to enable ECS Server deployment for High Availability by installing a Load Balancer and promoting the existing ECS Agents to ECS Server. By performing this procedure, you will be able to deploy HA on your existing ECS Server.

If you have a production quality ECS cluster, then Cloudera recommends you to use ECS Server High Availability. You can also consider having an ECS Server HA for any non-production ECS cluster that you expect to be available long-term.

If you have Cloudera Manager 7.5.5, then you must have an ECS cluster installed and configured with a single ECS Server.

You can enable an ECS cluster and convert it to a cluster protected by ECS Server HA. Enabling ECS Server deployment for High Availability involves preparing your cluster, configuring DNS wildcard entry, adding a Load Balancer into the topology, and promoting ECS Agents to the ECS Server. An ECS High Availability cluster must consist of:
  • An odd number of server nodes that will run etcd, the Kubernetes API, and other control plane services. Cloudera recommends a minimum of three ECS Server nodes.
  • Two or more agent nodes that are designated to run CDP data services.
  • A software or hardware Load balancer using TCP mode (non-terminating https).

Architecture of CDP Private Cloud Experiences on single ECS Server

Architecture of CDP Private Cloud Experiences on High Availability