hive systemctl启停hiveserver2和metastore服务

1)、编辑hive启停shell脚本，脚本如下(说明：脚本别忘记了用户需要执行权限)

#!/bin/sh

if [ $# -ne 2 ] ;then
	echo "please input two params,first is (metastore|hiveserver2),second is (start|stop)"
	exit 0
fi
if [ "$1" == "metastore" ] ; then
	if [ "$2" == "start" ] ; then
		cd /var/log/hive
		echo "now is start metastore"
		nohup /usr/local/hive/bin/hive --service metastore &
		exit 0
	elif [ "$2" == "stop" ] ; then
		metastore_pid=`ps -ef|grep "HiveMetaStore"|grep "JAVA"|awk '{print $2}'`
		kill ${metastore_pid}
		echo "-------metastore has stop"
		exit 0
	else
		echo "second param please input 'start' or 'stop'"
		exit 0
	fi
elif [ "$1" == "hiveserver2" ] ; then
	if [ "$2" == "start" ] ; then
		cd /var/log/hive
        	echo "now is start hiveserver2"
		nohup /usr/local/hive/bin/hive --service hiveserver2 &
		exit 0
        elif [ "$2" == "stop" ] ; then
		hiveserver2_pid=`ps -ef|grep "HiveServer2"|grep "java"|awk '{print $2}'`
		kill ${hiveserver2_pid}
		echo "-------hiveserver has stop"
		exit 0
        else
                echo "second param please input 'start' or 'stop'"
		exit 0
        fi
else
	echo "first param please input 'metastore' or 'hiveserver2'"
fi

2）、在/usr/lib/systemd/system创建对应的metastore和hiveserver启停服务hive-hivesver2和hive-metastore是systemctl的启停名称

hive-hiveserver2.service脚本内容：

[Unit]
Description=metastore
Wants.NETwork-online.target
After=network-online.target

[Service]
Type=forking 
User=hive
Group=hadoop
Environment="HADOOP_HOME=/usr/local/hadoop3" #说明：这个环境变量得加上，否则会报找不到这个环境变量，虽然/usr/local/hive/conf/hive_service.sh hiveserver2 start能正常启动，但是使用systemctl启动就会找不到这个环境变量
ExecStart=/usr/local/hive/conf/hive_service.sh hiveserver2 start
ExecStop=/usr/local/hive/conf/hive_service.sh hiveserver2 stop
Restart=no

[Install]
WantedBy=multi-user.target

hive-metastore.service脚本内容：

[Unit]
Description=metastore
Wants=network-online.target
After=network-online.target

[Service]
Type=forking 
User=hive
Group=hadoop
Environment="HADOOP_HOME=/usr/local/hadoop3"
ExecStart=/usr/local/hive/conf/hive_service.sh metastore start
ExecStop=/usr/local/hive/conf/hive_service.sh metastore stop
Restart=no

[Install]
WantedBy=multi-user.target

说明：每次修改service脚本之后要执行systemctl daemon-reload，否则修改的脚本不会被加载

3)、启动服务 systemctl start hive-metastore

4)、停止服务systemctl stop hive-metastore