Write a Hadoop cluster-wide key from start-cluster.sh, fully closed stop-cluster.sh, show all jps processes show-jps.sh scripts and solutions

 

 

 

 

First, first enter: / usr / local / bin files in the folder, write a script start-cluster.sh

Vim  start-cluster.sh (requires root privileges) the information of each node to modify surfaces according to their

#! / bin / bash 
the User = ` whoami ` 

echo  " =============== started all nodes service =============== " 
for ((Host = 102 ; Host <= 104 ; ++ Host)); do 
                echo  " --------------- ------- Hadoop $ ...... Host the Zookeeper --------- " 
        SSH $ $ hadoop the User @ Host ' /opt/module/zookeeper-3.4.10/bin/zkServer.sh Start ' 
DONE 

echo  " =========== ===== being HDFS =============== start " 
SSH $ @ hadoop102 the User ' /opt/module/hadoop-2.7.2/sbin/start-dfs.sh' 

Echo  " ================ =============== Starting YARN " 
SSH $ @ hadoop102 the User ' / opt / Module / hadoop -2.7.2 / sbin / start-yarn.sh ' 

echo  " ================ hadoop102 starting JobHistoryServer =============== " 
SSH $ @ hadoop102 the User ' /opt/module/hadoop-2.7.2/sbin/mr-jobhistory-daemon.sh Start historyserver '

Save and exit. Modify execute permissions chmod 777  start-cluster.sh run:

Second, write stop-cluster.sh

#! / bin / bash 
the User = ` whoami `
 echo  ' ================ start stop all node services =============== " 
echo  " ================ =============== hadoop102 stopping JobHistoryServer " 
SSH $ @ hadoop102 the User ' / opt / Module / hadoop -2.7.2 / sbin / mr-jobhistory-daemon.sh sTOP historyserver ' 

echo  " ================ stopping YARN ============ === " 
SSH $ @ hadoop102 the User ' /opt/module/hadoop-2.7.2/sbin/stop-yarn.sh ' 

echo  "================ =============== Stopping HDFS "
ssh $user@hadoop102 '/opt/module/hadoop-2.7.2/sbin/stop-dfs.sh'

echo "===============     正在停止Zookeeper......     ==============="
for((host=102; host<=104; host++)); do
        echo "--------------- hadoop$host Zookeeper...... ----------------"
        ssh $user@hadoop$host '/opt/module/zookeeper-3.4.10/bin/zkServer.sh stop'
done

Modify execute permissions