kafka集群启动脚本失效

问题描述:

之前写的kafka集群启动脚本,今天重启服务器后失效了, 只启动了本地的kafka1, 另一台虚拟机上的kafka2没启动也没有日志

#! /bin/bash
case $1 in
"start"){
        echo " --------Start 10.168.204.158 Kafka Broker $j-------"
        # 用于KafkaManager监控
        export JMX_PORT=9988 && /home/pmish/software/kafka_2.12-2.4.1/bin/kafka-server-start.sh -daemon /home/pmish/software/kafka_2.12-2.4.1/config/server.properties

        for i in 10.168.204.2
        do
                echo " --------Start $i Kafka Broker $j-------"
                # 用于KafkaManager监控
                ssh $i "export JMX_PORT=9988 && /home/pmish/software/kafka_2.12-2.4.1/bin/kafka-server-start.sh -daemon /home/pmish/software/kafka_2.12-2.4.1/config/server.properties "
        done
};;
"stop"){
        echo " --------Stop 10.168.204.158 Kafka-------"
        /home/pmish/software/kafka_2.12-2.4.1/bin/kafka-server-stop.sh stop

        for i in 10.168.204.2
        do
                echo " --------Stop $i Kafka-------"
                ssh $i "/home/pmish/software/kafka_2.12-2.4.1/bin/kafka-server-stop.sh stop"
        done
};;
esac

百度后找到一篇文章解决了:
解决方法：

1、先测试 ssh [kafka2 ip] "which java" 是否有反应
如果显示no found，

[root@kafka1 software]# ssh kafka2 "which java"
which: no java in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin)

需要下面的配置

2、需要配置 vim ~/.bashrc

添加代码：

export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

将.bashrc文件分发到其他节点上

scp ~/.bashrc root@kafka2:/root/.bashrc

3、继续测试 ssh [kafka2 ip] "which java" 成功后重启脚本，看进程是否存在

[root@kafka1 software]# ssh kafka2 "which java"
/usr/local/java/jdk1.8.0_211/bin/java

原因:

1. 登录式Shell，采用用户名比如xxx登录，会自动加载/etc/profile
2. 非登录式Shell，采用ssh 比如ssh 10.168.204.203登录，不会自动加载/etc/profile，会自动加载~/.bashrc

其他方法：

• 检查broker.id是否不一致

• zookeeper.connect是否正确

• Kafka的环境变量

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参考https://blog.csdn.net/weixin_45721882/article/details/116033387
https://www.cnblogs.com/ttzz/p/13355567.html