停止ambari上服务的顺序

Before performing any upgrades or uninstalling software, stop all of the Hadoop services in the following order:

• Ranger

• Knox

• Oozie

• WebHCat

• HiveServer2

• Hive Metastore

• HBase

• YARN

• HDFS

• Zookeeper

• Storm

• Kafka

Instructions

1. Stop Ranger. Execute the following commands on the Ranger host machine:

   sudo service ranger-admin stop
   sudo service ranger-usersync stop

2. Stop Knox. Execute the following command on the Knox host machine.

   su -l knox -c "/usr/hdp/current/knox-server/bin/gateway.sh stop"

3. Stop Oozie. Execute the following command on the Oozie host machine.

   su -l oozie -c "/usr/hdp/current/oozie-server/bin/oozied.sh stop"

4. Stop WebHCat. On the WebHCat host machine, execute the following command:

   su -l hcat -c "/usr/hdp/current/hive-webhcat/sbin/webhcat_server.sh stop"

5. Stop Hive. Execute this command on the Hive Metastore and Hive Server2 host machine.

   ps aux | awk '{print $1,$2}' | grep hive | awk '{print $2}' | xargs kill >/dev/null 2>&1

6. Stop HBase

   • Execute this command on all RegionServers:

     su -l hbase -c "/usr/hdp/current/hbase-regionserver/bin/hbase-daemon.sh stop regionserver"

   • Execute this command on the HBase Master host machine:

     su -l hbase -c "/usr/hdp/current/hbase-master/bin/hbase-daemon.sh stop master"

7. Stop YARN

   • Execute this command on all NodeManagers:

     su -l yarn -c "/usr/hdp/current/hadoop-yarn-nodemanager/sbin/yarn-daemon.sh stop nodemanager"

   • Execute this command on the History Server host machine:

     su -l yarn -c "/usr/hdp/current/hadoop-mapreduce-historyserver/sbin/mr-jobhistory-daemon.sh stop historyserver"

   • Execute this command on the ResourceManager host machine(s):

     su -l yarn -c "/usr/hdp/current/hadoop-yarn-resourcemanager/sbin/yarn-daemon.sh stop resourcemanager"

8. Stop HDFS

   • Execute this command on all DataNodes:

     su -l hdfs -c "/usr/hdp/current/hadoop-hdfs-datanode/../hadoop/sbin/hadoop-daemon.sh stop datanode"

   • If you are not running NameNode HA (High Availability), stop the Secondary NameNode by executing this command on the Secondary NameNode host machine:

     su -l hdfs -c "/usr/hdp/current/hadoop-hdfs-namenode/../hadoop/sbin/hadoop-daemon.sh stop secondarynamenode"

   • Execute this command on the NameNode host machine(s):

     su -l hdfs -c "/usr/hdp/current/hadoop-hdfs-namenode/../hadoop/sbin/hadoop-daemon.sh stop namenode"

   • If you are running NameNode HA, stop the Zookeeper Failover Controllers (ZKFC) by executing this command on the NameNode host machines:

     su -l hdfs -c "/usr/hdp/current/hadoop-hdfs-namenode/../hadoop/sbin/hadoop-daemon.sh stop zkfc"

   • If you are running NameNode HA, stop the JournalNodes by executing these commands on the JournalNode host machines:

     su $HDFS_USER 
     /usr/hdp/current/hadoop-hdfs-journalnode/../hadoop/sbin/hadoop-daemon.sh stop journalnode

     where $HDFS_USER is the HDFS user. For example, hdfs.

9. Stop ZooKeeper. Execute this command on the ZooKeeper host machine(s):

   su - zookeeper -c "export ZOOCFGDIR=/usr/hdp/current/zookeeper-server/conf ; export ZOOCFG=zoo.cfg; source /usr/hdp/current/zookeeper-server/conf/zookeeper-env.sh ; /usr/hdp/current/zookeeper-server/bin/zkServer.sh stop"

10. Start Storm services using a process controller, such as supervisord. See "Installing and Configuring Apache Storm" in the Manual Install Guide. For example, to stop the storm-nimbus service:

    sudo /usr/bin/supervisorctl
    storm-drpc RUNNING pid 9801, uptime 0:03:20
    storm-nimbus RUNNING pid 9802, uptime 0:03:20
    storm-ui RUNNING pid 9800, uptime 0:03:20
    supervisor> stop storm-nimbus
    storm-nimbus: stopped

    where $STORM_USER is the operating system user that installed Storm. For example, storm.

11. Stop Kafka. Execute this command on the Kafka host machine(s):

    su $KAFKA_USER
    /usr/hdp/current/kafka-broker/bin/kafka stop

    where$KAFKA_USER is the operating system user that installed Kafka. For example,kafka.