Elasticsearch7.8 CentOs开机自启

要在CentOS上实现Elasticsearch 7.8开机自启动，你可以创建一个启动脚本并将其放置在`/etc/init.d/`目录中。以下是一个示例脚本：

#!/bin/sh
#chkconfig: 2345 80 05
#description: elasticsearch

case "$1" in
start)
    su es<<!
    cd /home/soft/elasticsearch/elasticsearch-7.8.0/
    ./bin/elasticsearch -d
    !
    echo "Elasticsearch started"
    ;;
stop)
    es_pid=`ps aux|grep elasticsearch | grep -v 'grep elasticsearch' | awk '{print $2}'`
    kill -9 $es_pid
    echo "Elasticsearch stopped"
    ;;
restart)
    es_pid=`ps aux|grep elasticsearch | grep -v 'grep elasticsearch' | awk '{print $2}'`
    kill -9 $es_pid
    echo "Elasticsearch stopped"
    su es<<!
    cd /home/soft/elasticsearch/elasticsearch-7.8.0/
    ./bin/elasticsearch -d
    !
    echo "Elasticsearch started"
    ;;
*)
    echo "Usage: start|stop|restart"
    ;;
esac

exit $?

将上述脚本保存为`elasticsearch`，然后使用以下命令将其复制到`/etc/init.d/`目录中：

sudo cp elasticsearch /etc/init.d/

接下来，你需要设置脚本的权限：

sudo chmod +x /etc/init.d/elasticsearch

最后，你可以使用以下命令来启动、停止或重启Elasticsearch：

sudo service elasticsearch start  # 启动
sudo service elasticsearch stop   # 停止
sudo service elasticsearch restart  # 重启

这样，Elasticsearch 7.8就能在CentOS开机时自动启动了。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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