#!/usr/bin/env bash # #/** # * Copyright 2011 The Apache Software Foundation # * # * Licensed to the Apache Software Foundation (ASF) under one # * or more contributor license agreements. See the NOTICE file # * distributed with this work for additional information # * regarding copyright ownership. The ASF licenses this file # * to you under the Apache License, Version 2.0 (the # * "License"); you may not use this file except in compliance # * with the License. You may obtain a copy of the License at # * # * http://www.apache.org/licenses/LICENSE-2.0 # * # * Unless required by applicable law or agreed to in writing, software # * distributed under the License is distributed on an "AS IS" BASIS, # * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # * See the License for the specific language governing permissions and # * limitations under the License. # */ # Move regions off a server then stop it. Optionally restart and reload. # Turn off the balancer before running this script. function usage { echo "Usage: graceful_stop.sh [--config ] [-d] [-e] [--restart [--reload]] [--thrift] [--rest] " echo " thrift If we should stop/start thrift before/after the hbase stop/start" echo " rest If we should stop/start rest before/after the hbase stop/start" echo " restart If we should restart after graceful stop" echo " reload Move offloaded regions back on to the restarted server" echo " d|debug Print helpful debug information" echo " maxthreads xx Limit the number of threads used by the region mover. Default value is 1." echo " hostname Hostname of server we are to stop" echo " e|failfast Set -e so exit immediately if any command exits with non-zero status" exit 1 } if [ $# -lt 1 ]; then usage fi bin=`dirname "$0"` bin=`cd "$bin">/dev/null; pwd` # This will set HBASE_HOME, etc. . "$bin"/hbase-config.sh # Get arguments restart= reload= debug= thrift= rest= maxthreads=1 failfast= while [ $# -gt 0 ] do case "$1" in --thrift) thrift=true; shift;; --rest) rest=true; shift;; --restart) restart=true; shift;; --reload) reload=true; shift;; --failfast | -e) failfast=true; shift;; --debug | -d) debug="--debug"; shift;; --maxthreads) shift; maxthreads=$1; shift;; --) shift; break;; -*) usage ;; *) break;; # terminate while loop esac done # "$@" contains the rest. Must be at least the hostname left. if [ $# -lt 1 ]; then usage fi # Emit a log line w/ iso8901 date prefixed log() { echo `date +%Y-%m-%dT%H:%M:%S` $1 } # See if we should set fail fast before we do anything. if [ "$failfast" != "" ]; then log "Set failfast, will exit immediately if any command exits with non-zero status" set -e fi hostname=$1 filename="/tmp/$hostname" local=false localhostname=`/bin/hostname` if [ "$localhostname" == "$hostname" ]; then local=true fi log "Disabling load balancer" HBASE_BALANCER_STATE=`echo 'balance_switch false' | "$bin"/hbase --config ${HBASE_CONF_DIR} shell | tail -3 | head -1` log "Previous balancer state was $HBASE_BALANCER_STATE" log "Unloading $hostname region(s)" HBASE_NOEXEC=true "$bin"/hbase --config ${HBASE_CONF_DIR} org.jruby.Main "$bin"/region_mover.rb --file=$filename $debug --maxthreads=$maxthreads unload $hostname log "Unloaded $hostname region(s)" # Stop the server(s). Have to put hostname into its own little file for hbase-daemons.sh hosts="/tmp/$(basename $0).$$.tmp" echo $hostname >> $hosts if [ "$thrift" != "" ]; then log "Stopping thrift" if [ "$local" ]; then "$bin"/hbase-daemon.sh --config ${HBASE_CONF_DIR} stop thrift else "$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} stop thrift fi fi if [ "$rest" != "" ]; then log "Stopping rest" if [ "$local" ]; then "$bin"/hbase-daemon.sh --config ${HBASE_CONF_DIR} stop rest else "$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} stop rest fi fi log "Stopping regionserver" if [ "$local" ]; then "$bin"/hbase-daemon.sh --config ${HBASE_CONF_DIR} stop regionserver else "$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} stop regionserver fi if [ "$restart" != "" ]; then log "Restarting regionserver" if [ "$local" ]; then "$bin"/hbase-daemon.sh --config ${HBASE_CONF_DIR} start regionserver else "$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} start regionserver fi if [ "$thrift" != "" ]; then log "Restarting thrift" # -b 0.0.0.0 says listen on all interfaces rather than just default. if [ "$local" ]; then "$bin"/hbase-daemon.sh --config ${HBASE_CONF_DIR} start thrift -b 0.0.0.0 else "$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} start thrift -b 0.0.0.0 fi fi if [ "$rest" != "" ]; then log "Restarting rest" if [ "$local" ]; then "$bin"/hbase-daemon.sh --config ${HBASE_CONF_DIR} start rest else "$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} start rest fi fi if [ "$reload" != "" ]; then log "Reloading $hostname region(s)" HBASE_NOEXEC=true "$bin"/hbase --config ${HBASE_CONF_DIR} org.jruby.Main "$bin"/region_mover.rb --file=$filename $debug --maxthreads=$maxthreads load $hostname log "Reloaded $hostname region(s)" fi fi # Restore balancer state if [ $HBASE_BALANCER_STATE != "false" ]; then log "Restoring balancer state to " $HBASE_BALANCER_STATE log "balance_switch $HBASE_BALANCER_STATE" | "$bin"/hbase --config ${HBASE_CONF_DIR} shell &> /dev/null fi # Cleanup tmp files. trap "rm -f "/tmp/$(basename $0).*.tmp" &> /dev/null" EXIT