bin/zookeepers.sh

   1 #!/usr/bin/env bash
   2 #
   3 #/**
   4 # * Licensed to the Apache Software Foundation (ASF) under one
   5 # * or more contributor license agreements.  See the NOTICE file
   6 # * distributed with this work for additional information
   7 # * regarding copyright ownership.  The ASF licenses this file
   8 # * to you under the Apache License, Version 2.0 (the
   9 # * "License"); you may not use this file except in compliance
  10 # * with the License.  You may obtain a copy of the License at
  11 # *
  12 # *     http://www.apache.org/licenses/LICENSE-2.0
  13 # *
  14 # * Unless required by applicable law or agreed to in writing, software
  15 # * distributed under the License is distributed on an "AS IS" BASIS,
  16 # * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17 # * See the License for the specific language governing permissions and
  18 # * limitations under the License.
  19 # */
  20 #
  21 # Run a shell command on all zookeeper hosts.
  22 #
  23 # Environment Variables
  24 #
  25 #   HBASE_CONF_DIR  Alternate hbase conf dir. Default is ${HBASE_HOME}/conf.
  26 #   HBASE_SLAVE_SLEEP Seconds to sleep between spawning remote commands.
  27 #   HBASE_SSH_OPTS Options passed to ssh when running remote commands.
  28 #
  29 # Modelled after $HADOOP_HOME/bin/slaves.sh.
  30
  31 usage="Usage: zookeepers [--config <hbase-confdir>] command..."
  32
  33 # if no args specified, show usage
  34 if [ $# -le 0 ]; then
  35   echo $usage
  36   exit 1
  37 fi
  38
  39 bin=`dirname "${BASH_SOURCE-$0}"`
  40 bin=`cd "$bin">/dev/null; pwd`
  41
  42 . "$bin"/hbase-config.sh
  43
  44 if [ "$HBASE_MANAGES_ZK" = "" ]; then
  45   HBASE_MANAGES_ZK=true
  46 fi
  47
  48 if [ "$HBASE_MANAGES_ZK" = "true" ]; then
  49   hosts=`"$bin"/hbase org.apache.hadoop.hbase.zookeeper.ZKServerTool | grep '^ZK host:' | sed 's,^ZK host:,,'`
  50   cmd=$"${@// /\\ }"
  51   for zookeeper in $hosts; do
  52    ssh $HBASE_SSH_OPTS $zookeeper $cmd 2>&1 | sed "s/^/$zookeeper: /" &
  53    if [ "$HBASE_SLAVE_SLEEP" != "" ]; then
  54      sleep $HBASE_SLAVE_SLEEP
  55    fi
  56   done
  57 fi
  58
  59 wait