Shell【脚本 02】离线安装配置Zookeeper及Kafka并添加service服务和开机启动（脚本分析）

1.离线安装脚本

为了能够快速部署，故编写了离线安装配置的 shell 脚本。

1.1 Zookeeper

Zookeeper 安装文件为apache-zookeeper-3.6.2-bin.tar.gz脚本内容如下：

#!/bin/bash
rm -rf /usr/local/zookeeper

echo "(1/6): 解压Zookeeper安装文件..."
tar -zxvf apache-zookeeper-3.6.2-bin.tar.gz
sleep 10
echo "(1/6): Zookeeper安装文件解压完毕"

echo "(2/6): 配置Zookeeper环境变量..."
mv ./apache-zookeeper-3.6.2-bin/ /usr/local/zookeeper
sleep 2
cat <<'EOF' > /etc/profile.d/zookeeper.sh
export ZOOKEEPER_HOME=/usr/local/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin
EOF
sleep 1
source /etc/profile.d/zookeeper.sh
echo "ZOOKEEPER_HOME目录:"${ZOOKEEPER_HOME}
echo "(2/6): 配置Zookeeper环境变量完毕"

echo "(3/6): 配置Zookeeper运行参数..."
cp ${ZOOKEEPER_HOME}/conf/zoo_sample.cfg ${ZOOKEEPER_HOME}/conf/zoo.cfg
sed -i "12c dataDir=/usr/local/zookeeper/data" ${ZOOKEEPER_HOME}/conf/zoo.cfg
sed -i "13i dataLogDir=/usr/local/zookeeper/datalog" ${ZOOKEEPER_HOME}/conf/zoo.cfg
echo "(3/6): Zookeeper运行参数配置完毕"

echo "(4/6): 初次启动Zookeeper..."
zkServer.sh start
sleep 2
zkServer.sh status
echo "(4/6): Zookeeper初次启动完毕"

echo "(5/6): 开启2181端口..."
firewall-cmd --zone=public --add-port=2181/tcp --permanent && firewall-cmd --reload
echo "(5/6): 2181端口开启完毕"

echo "(6/6): Zookeeper加入到service服务并设置开机自启..."
cat <<'EOF' > /etc/rc.d/init.d/zookeeper
#!/bin/bash
# chkconfig: 2345 10 90
# description: service zookeeper
# processname: zookeeper
export JAVA_HOME=/usr/local/java
ZOOKEEPER_HOME=/usr/local/zookeeper
case $1 in
     start) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh start;;
     start-foreground) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh start-foreground;;
     stop) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh stop;;
     status) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh status;;
     restart) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh restart;;
     upgrade) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh upgrade;;
     print-cmd) su root ${ZOOKEEPER_HOME}/bin/zkServer.sh print-cmd;;
     *) echo "require start|start-foreground|stop|status|restart|print-cmd";;
esac
EOF
chmod +x /etc/rc.d/init.d/zookeeper
chkconfig --add /etc/rc.d/init.d/zookeeper
chkconfig zookeeper on
echo "(6/6): Zookeeper加入到service服务并设置开机自启完毕"

1.2 Kafka

Kafka 安装文件为apache-zookeeper-3.6.2-bin.tar.gz脚本内容如下：

#!/bin/bash
rm -rf /usr/local/kafka

echo "(1/6): 解压Kafka安装文件..."
tar -zxvf kafka_2.12-2.6.0.tgz
sleep 10
echo "(1/6): Kafka安装文件解压完毕"

echo "(2/6): 配置Kafka环境变量..."
mv ./kafka_2.12-2.6.0/ /usr/local/kafka
sleep 2
cat <<'EOF' > /etc/profile.d/kafka.sh
export KAFKA_HOME=/usr/local/kafka
export PATH=$PATH:$KAFKA_HOME/bin
EOF
sleep 1
source /etc/profile.d/kafka.sh
echo "KAFKA_HOME目录:"${KAFKA_HOME}
echo "(2/6): Kafka环境变量配置完毕"

echo "(3/6): 配置Kafka运行参数..."
sed -i "32i listeners=PLAINTEXT://localhost:9092" ${KAFKA_HOME}/config/server.properties
sed -i "61c log.dirs=${KAFKA_HOME}/kafka-logs" ${KAFKA_HOME}/config/server.properties
echo "(3/6): Kafka运行参数配置完毕"

echo "(4/6): 首次启动Kafka..."
kafka-server-start.sh -daemon ${KAFKA_HOME}/config/server.properties
echo "(4/6): Kafka首次启动完毕"

echo "(5/6): 开启9092端口..."
firewall-cmd --zone=public --add-port=9092/tcp --permanent && firewall-cmd --reload
echo "(5/6): 9092端口开启完毕"

echo "(6/6): Kafka加入到service服务并设置开机自启..."
cat <<'EOF' > /etc/rc.d/init.d/kafka
#!/bin/bash
# chkconfig: 2345 40 60
# description: service kafka
# processname: kafka
export JAVA_HOME=/usr/local/java
KAFKA_HOME=/usr/local/kafka
case $1 in
	start) ${KAFKA_HOME}/bin/kafka-server-start.sh -daemon ${KAFKA_HOME}/config/server.properties;;
	stop) ${KAFKA_HOME}/bin/kafka-server-stop.sh;;
	status) ${JAVA_HOME}/bin/jps | grep Kafka;;
	restart) ${KAFKA_HOME}/bin/kafka-server-stop.sh
			 ${KAFKA_HOME}/bin/kafka-server-start.sh -daemon ${KAFKA_HOME}/config/server.properties;;
	*) echo "require start|stop|status|restart";;
esac
EOF
chmod +x /etc/rc.d/init.d/kafka
chkconfig --add /etc/rc.d/init.d/kafka
chkconfig kafka on
echo "(6/6): Kafka加入到service服务并设置开机自启完毕"

2.脚本使用说明

• 使用source xxx.sh执行上述脚本，否则环境变量无法在当前环境下生效。
• 不同安装文件的(3/6): 配置xxx运行参数...的代码可能不一致，需要自行整理。