CentOS下Elasticsearch开机启动脚本

• 一 在/etc/init.d目录下新建文件elasticsearch

#!/bin/sh
#chkconfig: 2345 80 05
#description: elasticsearch
 
export JAVA_HOME=/usr/java/jdk1.8.0_221
export JAVA_BIN=/usr/java/jdk1.8.0_221/bin
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME JAVA_BIN PATH CLASSPATH

case "$1" in
start)
    su elastic<<!
    cd /usr/local/elasticsearch
    ./bin/elasticsearch -d
!
    echo "elasticsearch startup"
    ;;  
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 elastic<<!
    cd /usr/local/elasticsearch
    ./bin/elasticsearch -d
!
    echo "elasticsearch startup"
    ;;  
*)
    echo "start|stop|restart"
    ;;  
esac

exit $?

su elastic :因为elasticsearch不支持root直接启动 所以使用新创建的用户 elastic

• 二 保存退出，赋予执行权限

chmod +x elasticsearch

• 三 添加到开机启动任务

chkconfig --add elasticsearch

• 4、添加和删除服务并设置启动方式（chkconfig具体使用另行百度）

chkconfig --add elasticsearch
chkconfig --del elasticsearch

• 5、启动和关闭服务

service elasticsearch start
service elasticsearch stop
service elasticsearch restart

• 6、设置服务的启动方式

chkconfig elasticsearch on
chkconfig elasticsearch off

问题: 启动后发现自动停止.

max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

说是最大虚拟内存区域vm.max_map_count [65530]太低，至少增加[262144]

然后可以执行以下指令

sysctl -w vm.max_map_count=262144