Deploying Hue with a ResourceManager HA Cluster

Add the HA sub-section

If it does not exist, you can add a [[[ha]]] configuration sub-section to end of the [[yarn_clusters]] section of the hue.ini configuration file.

To do this, specify the following:

• resourcemanager_api_url

  Host on which you are running the failover Resource Manager.

• logical_name

  Logical name of the Resource Manager.

• submit_to

  Specify if Hue should use the cluster. Specify true to use the cluster, or false to not use the cluster.

If you ensure that the cluster section names are unique, you can add more than one Resource Manager failover configuration, for example, [[[ha2]]]. By doing so, if the standby Resource Manager also fails over, the next available RM instance is tried.

Example:

[[yarn_clusters]]

    [[[default]]]
      # Whether to submit jobs to this cluster
      submit_to=true

      ## security_enabled=false

      # Resource Manager logical name (required for HA)
      logical_name=rm1

      # URL of the ResourceManager webapp address (yarn.resourcemanager.webapp.address)
      resourcemanager_api_url=http://cl2-node02.local:8088

      # URL of Yarn RPC adress (yarn.resourcemanager.address)
      resourcemanager_rpc_url=http://cl2-node02.local:8050

      # URL of the ProxyServer API
      proxy_api_url=http://cl2-node02.local:8088

      # URL of the HistoryServer API
      history_server_api_url=http://cl2-node02.local:19888

      # URL of the NodeManager API
      node_manager_api_url=http://localhost:8042

      # HA support by specifying multiple clusters
      # e.g.

      [[[ha]]]
        # Enter the host on which you are running the failover Resource Manager
        resourcemanager_api_url=http://cl2-node01.local:8088
        history_server_api_url=http://cl2-node02.local:19888
        proxy_api_url=http://cl2-node01.local:8088
        resourcemanager_rpc_url=http://cl2-node01.local:8050
        logical_name=rm2
        submit_to=True
Note only one ha section is necessary, since Hue still uses the default section.