Cloudera Docs

Starting, stopping, restarting, and refreshing Cloudera Embedded Container Service Clusters

Provides information about how you can manage your Cloudera Data Services on premises ECS clusters.

Starting a Cloudera Embedded Container Service Cluster

Procedure to start an ECS cluster.

  1. Navigate to the ECS service, Home > Status tab, click the Actions menu to the right of the Embedded Container Service cluster name and select Start.
  2. Click the Start button that appears in the next screen to confirm. The Command Details window shows the progress of starting services.
When the All services successfully started message appears, the task is complete and you can close the Command Details window.

Stopping a Cloudera Embedded Container Service Cluster

Procedure to stop an ECS cluster.

  1. Navigate to the ECS service, Home > Status tab, click the Actions menu to the right of the Embedded Container Service cluster name and select Stop.
  2. Click the Stop button in the confirmation screen. The Command Details window shows the progress of stopping services.
When the All services successfully stopped message appears, the task is complete and you can close the Command Details window.

Before restarting the High Availability enabled Cloudera Embedded Container Service Cluster

You must review the following information prior to restarting your High Availability (HA) enabled Cloudera Embedded Container Service (ECS) cluster.

About Full Cluster Restart

When a full cluster restart is required (rolling restart is not recommended), do not restart all roles at once. Employ one of the procedures.

Option A: Start Primary Master First, then All Others

  1. Start the primary master (the bootstrap node that existed before other nodes were added).
  2. Start all other roles (For example, additional masters, workers, and others).

Option B: Restart Non-Master First, then Rolling Restart Masters

  1. Restart all roles except master nodes (For example, workers, agents).
  2. Perform a rolling restart after selecting all the master nodes.
Table 1. Summary
Scenario Procedure
Full cluster start Start primary master first, then all other roles
Full cluster restart Restart non-masters first, then rolling restart after selecting all master nodes

Rolling Restart of an Cloudera Embedded Container Service Cluster

Procedure to perform the rolling restart.

  1. Navigate to the ECS service, Home > Status tab, click the Actions menu to the right of the cluster name and select Rolling Restart.
  2. Click the Rolling Restart button that appears in the next screen to confirm. On this screen, you can select the services (Docker or /and ECS), Roles (Workers only, Non-workers only, All Roles).
    The Command Details window shows the progress of rolling restart of a batch of nodes. Here, batch size refers to the number of worker roles that can be restarted in parallel. The Batch size is 1 by default.
  3. Click Actions > Unseal Vault

Restarting a Cloudera Embedded Container Service Cluster

Procedure to restart your ECS cluster.

  1. Navigate to the ECS service, Home > Status tab, click the Actions menu to the right of the cluster name and select Restart.
  2. Click the Restart button that appears in the next screen to confirm.
  3. Click Actions > Unseal Vault

Configuring Restart for an Cloudera Embedded Container Service cluster

Follow these instructions to configure a cluster restart.

  1. Navigate to the ECS service, Home > Configuration tab.
  2. Select Node Readiness Timeout OR Drain Node Timeout configurations to configure overall restart time for an ECS cluster.
    Table 2. ECS Cluster Actions and Performance Impact
    ECS Cluster action Affects Availability Impact Speed
    Stop and Start Yes All nodes Fastest
    Restart Least one node at a time Slowest
    Rolling restart (if the agent batch size is 1 then it is similar to Restart).

    Inversely proportional to the batch size.

    		Depends on batch size. Speed is proportional to the batch size.That is, higher the batch size, higher the speed.

Refreshing a Cloudera Embedded Container Service Cluster

Refresh your ECS cluster with a single step process.

Navigate to the ECS service, Home > Status tab, click the Actions menu to the right of the cluster name and select Refresh Cluster.