Hadoop服务脚本

#!/bin/bash
process=("NameNode" "SecondaryNameNode" "DataNode" "NodeManager" "ResourceManager")
JAVA_HOME="/opt/software/jdk1.8.0_371"
HADOOP_HOME="/opt/software/hadoop-3.3.6"

# 定义颜色的ANSI转义序列
red='\033[31m'
green='\033[32m'
yellow='\033[33m'
reset='\033[0m'

function checkProcess {
	# 拿到进程号
	processID=`${JAVA_HOME}/bin/jps | grep -w ${1} | grep -v grep | awk '{print $1}'`
	if [[ -z $processID  ]]; then
		echo -e "${red}${1} 运行异常${reset}"
	else
		echo -e "${green}${1} 正在运行，进程 ${processID}${reset}"
	fi
}

case $1 in
	start )
		echo "正在启动 HDFS..."
		`$HADOOP_HOME/sbin/start-dfs.sh > /dev/null 2>&1`
		echo "正在启动 YARN..."
		`$HADOOP_HOME/sbin/start-yarn.sh > /dev/null 2>&1`
		;;
	stop )
		echo "正在停止 HDFS..."
		`$HADOOP_HOME/sbin/stop-dfs.sh > /dev/null 2>&1`
		echo "正在停止 YARN..."
		`$HADOOP_HOME/sbin/stop-yarn.sh > /dev/null 2>&1`
		;;
	status )
		for i in ${process[@]}; do
			#statements
			checkProcess ${i}
		done
		;;
	* )
		echo "参数不正确 hadoop-service.sh start|stop|status"
		;;
esac