move-mr2-historyserver.sh

#!/bin/bash

AMBARI_USER='admin'
 AMBARI_PASSWORD='PWPWPW'
AMBARI_HOST='ambari.local'
CLUSTER_NAME='hdp'
MOVE_FROM='node1.local'
MOVE_TO='node2.local'
SSH_USER=john.doe

# Tell to ambari we want to install this component on new_host
curl -u $AMBARI_USER:$AMBARI_PASSWORD -H "X-Requested-By:ambari" -i -X POST http://$AMBARI_HOST:8080/api/v1/clusters/$CLUSTER_NAME/hosts/$MOVE_TO/host_components/HISTORYSERVER

# Trigger installation
curl -u $AMBARI_USER:$AMBARI_PASSWORD -H "X-Requested-By:ambari" -i -X PUT -d '{"RequestInfo": {"context": "Install History Server","query":"HostRoles/component_name.in('HISTORYSERVER')"}, "Body":{"HostRoles": {"state": "INSTALLED"}}}' http://$AMBARI_HOST:8080/api/v1/clusters/$CLUSTER_NAME/hosts/$MOVE_TO/host_components

# Stop HISTORYSERVER on old host
curl -u $AMBARI_USER:$AMBARI_PASSWORD -H "X-Requested-By:ambari" -i -X PUT -d '{"RequestInfo": {"context": "Stop History Server","query":"HostRoles/component_name.in('HISTORYSERVER')"}, "Body":{"HostRoles": {"state": "INSTALLED"}}}' http://$AMBARI_HOST:8080/api/v1/clusters/$CLUSTER_NAME/hosts/$MOVE_FROM/host_components/HISTORYSERVER

# copy journal from old node to new node.
mkdir /hadoop/mapreduce
rsync -av -e "ssh" --rsync-path="sudo rsync" $SSH_USER@$MOVE_FROM:/hadoop/mapreduce/jhs/ /hadoop/mapreduce/jhs

# update the configuration property below within in the Ambari UI within the MapReduce2 section.
#  <mapreduce.jobhistory.address>
#  <mapreduce.jobhistory.webapp.address>
# update the configuration property below within in the Ambari UI within the YARN section.
#  <yarn.log.server.url>

# Start HISTORYSERVER on new host
curl -u $AMBARI_USER:$AMBARI_PASSWORD -H "X-Requested-By:ambari" -i -X PUT -d '{"RequestInfo": {"context": "Start History Server","query":"HostRoles/component_name.in('HISTORYSERVER')"}, "Body":{"HostRoles": {"state": "STARTED"}}}' http://$AMBARI_HOST:8080/api/v1/clusters/$CLUSTER_NAME/hosts/$MOVE_TO/host_components/HISTORYSERVER

# Remove the old component
curl -u $AMBARI_USER:$AMBARI_PASSWORD -H "X-Requested-By:ambari" -i -X DELETE http://$AMBARI_HOST:8080/api/v1/clusters/$CLUSTER_NAME/hosts/$MOVE_FROM/host_components/HISTORYSERVER