Hadoop2.0重启脚本
方便重启带ha的集群，写了这个脚本
#/bin/bash
sh /opt/zookeeper-3.4.5-cdh4.4.0/bin/zkServer.sh restart
sh /opt/hadoop-2.0.0-cdh4.5.0/sbin/hadoop-daemon.sh start journalnode
sh /opt/hadoop-2.0.0-cdh4.5.0/sbin/stop-dfs.sh
sh /opt/hadoop-2.0.0-cdh4.5.0/bin-mapreduce1/stop-mapred-ha.sh
sh /opt/hadoop-2.0.0-cdh4.5.0/sbin/start-dfs.sh
sh /opt/hadoop-2.0.0-cdh4.5.0/bin-mapreduce1/start-mapred-ha.sh
sh /opt/hadoop-2.0.0-cdh4.5.0/bin/hdfs haadmin -DfSHAadmin -failover nn1 nn0
#wait 30
sh /opt/hadoop-2.0.0-cdh4.5.0/bin-mapreduce1/hadoop mrhaadmin -failover jt2 jt1
附录：
单独启动ha jt
hadoop-cdh4.5-ha-start-up
配置：
配置位置
文件1：start-mapred-ha.sh$HADOOP_HOME/bin-mapreduce1/start-mapred-ha.sh
文件2：stop-mapred-ha.sh$HADOOP_HOME/bin-mapreduce1/stop-mapred-ha.sh
文件3：hadoop-daemons-mrha.sh$HADOOP_HOME/bin-mapreduce1/hadoop-daemons-mrha.sh
文件4：hagroups.sh$HADOOP_HOME/bin-mapreduce1/hagroups.sh
文件5：hagroups$HADOOP_CONF_DIR/hagroups
用法：
启动：$HADOOP_HOME/bin-mapreduce1/start-mapred-ha.sh
关闭：$HADOOP_HOME/bin-mapreduce1/stop-mapred-ha.sh
文件1：start-mapred-ha.sh
#!/usr/bin/env bash
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
. "$bin"/hadoop-config.sh
# start jobtrackerha first to minimize connection errors at startup
"$bin"/hadoop-daemons-mrha.sh --config $HADOOP_CONF_DIR start mrzkfc
"$bin"/hadoop-daemons-mrha.sh --config $HADOOP_CONF_DIR start jobtrackerha
"$bin"/hadoop-daemons.sh --config $HADOOP_CONF_DIR start tasktracker
文件2：stop-mapred-ha.sh
#!/usr/bin/env bash
# Stop hadoop map reduce daemons. Run this on master node.
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
. "$bin"/hadoop-config.sh
"$bin"/hadoop-daemons-mrha.sh --config $HADOOP_CONF_DIR stop jobtrackerha
"$bin"/hadoop-daemons-mrha.sh --config $HADOOP_CONF_DIR stop mrzkfc
"$bin"/hadoop-daemons.sh --config $HADOOP_CONF_DIR stop tasktracker
文件3：hadoop-daemons-mrha.sh
#!/usr/bin/env bash
usage="Usage: hadoop-daemons-mrha.sh [--config confdir] [--hosts hostlistfile] [start|stop] command args..."
# if no args specified, show usage
if [ $# -le 1 ]; then
echo $usage
exit 1
fi
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
. $bin/hadoop-config.sh
exec "$bin/hagroups.sh" --config $HADOOP_CONF_DIR cd "$HADOOP_HOME" ; "$bin/hadoop-daemon.sh" --config $HADOOP_CONF_DIR "$@"
文件4：hagroups.sh
#!/usr/bin/env bash
usage="Usage: hagroups.sh [--config confdir] command..."
# if no args specified, show usage
if [ $# -le 0 ]; then
echo $usage
exit 1
fi
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
. "$bin"/hadoop-config.sh
# If the slaves file is specified in the command line,
# then it takes precedence over the definition in
# hadoop-env.sh. Save it here.
HOSTLIST=$HADOOP_SLAVES
if [ -f "${HADOOP_CONF_DIR}/hadoop-env.sh" ]; then
. "${HADOOP_CONF_DIR}/hadoop-env.sh"
fi
if [ "$HOSTLIST" = "" ]; then
if [ "$HADOOP_SLAVES" = "" ]; then
export HOSTLIST="${HADOOP_CONF_DIR}/hagroups"
else
export HOSTLIST="${HADOOP_SLAVES}"
fi
fi
for slave in `cat "$HOSTLIST"|sed "s/#.*$//;/^$/d"`; do
ssh $HADOOP_SSH_OPTS $slave $"${@// /\ }"
2>&1 | sed "s/^/$slave: /" &
if [ "$HADOOP_SLAVE_SLEEP" != "" ]; then
sleep $HADOOP_SLAVE_SLEEP
fi
done
wait
文件5：hagroups
h2master1
h2master2