This is documentation for MapR Version 5.0. You can also refer to MapR documentation for the latest release.

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All services should be run with same uid/gid on all nodes in the cluster.
To fix the alarm, the following steps should be done on the node for which the alarm is raised.

To run MapR services as the root user:

  1. Stop Warden:

  2. If ZooKeeper is installed on the node, stop it:

  3. Run the script $INSTALL_DIR/server/config-mapr-user.sh -u root
  4. If Zookeeper is installed, start it:

  5. Start Warden:

To run MapR services as a non-root user:

  1. Stop Warden:

  2. If ZooKeeper is installed on the node, stop it:

  3. If the MAPR_USER does not exist, create the user/group with the same UID and GID.
  4. If the MAPR_USER exists, verify that the uid of MAPR_USER is the same same as the value on the CLDB node.
  5. Run $INSTALL_DIR/server/config-mapr-user.sh -u MAPR_USER
  6. If Zookeeper is installed, start it:

  7. Start Warden:

  8. After clearing NODE_ALARM_MAPRUSER_MISMATCH alarms on all nodes, run $INSTALL_DIR/server/upgrade2mapruser.sh on all nodes wherever the alarm is raised.
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