Configuring Manual Failover for the ResourceManager

To configure manual failover, specify multiple ResourceManagers when you run configure.sh on each node in the cluster and then edit yarn-site.xml to disable automatic failover.
  1. Specify multiple ResourceManagers when you run configure.sh on each cluster and client node. The following the configure.sh script syntax configures three ResourceManager nodes (one active and two standby):
    /opt/mapr/server/configure.sh -C <CLDB node list> -Z <ZK node list> -RM <hostname1,hostname2,hostname3> -HS <hostname1> [additional parameters]
    Note: After you run configure.sh, each ResourceManager node contains a different value for the yarn.resourcemanager.ha.id property in the yarn-site.xml.
  2. Disable the following automatic failover properties in the yarn-site.xml on each node with the ResourceManager role:
    • yarn.resourcemanager.ha.automatic-failover.enabled
    • yarn.resourcemanager.ha.automatic-failover.embedded
  3. Restart the ResourceManager service. For more information, see Starting, Stopping, and Restarting Services.