zabbix系列(九)zabbix3.0实现自动触发zabbix-agent端shell脚本任务

zabbix实现自动触发远程脚本执行命令


Zabbix触发器(trigger)达到阀值后会有动作(action)执行:发送告警信息或执行远程命令

环境

Server:基于centos6.5 final x86_64
Zabbix:zabbix-3.0.4 server/agent


注意事项

1.远程执行命令是server端向agent端执行,不支持主动模式的agent;
2.不支持代理模式;
3.zabbix用户必须对命令具有执行权限,可以使用sudo赋予root权限(配置sudo无密码方式);
4.远程命令只是执行,执行成功与否并不检测并确认,可在” Monitoring-->Events”中查看action执行时,或在”Reports-->Action log”中查看远程命令是否执行成功(成功为” Executed”)。


zabbix-agent端的操作:

场景:监控某个服务器的web页面http相应码如果连续4次不为200则触发重启相关服务action


1.打开客户端远程执行命令的开关,记得重启zabbix-agent服务
vim /etc/zabbix/zabbix_agentd.conf 
EnableRemoteCommands = 1


2.visudo打开关于zabbix操作的命令

①添加如下内容
# allows 'zabbix' user to run all commands without password.
zabbix ALL=NOPASSWD: ALL
# allows 'zabbix' user to restart apache without password.
zabbix ALL=NOPASSWD: /bin/bash /usr/local/zabbix-agent/scripts/restart_ad_server.sh


②注释掉如下一行,否则命令无法执行:
# Default requiretty


添加相关的脚本:


vim /usr/local/zabbix-agent/scripts/restart_ad_server.sh


#!/bin/bash
# kill ad-server process
count_num=`ps -ef|grep ad-server-1.0.0.jar|grep -v grep|wc -l`

if [ $count_num -eq 1 ];then
ps -ef|grep ad-server-1.0.0.jar|grep -v grep|kill -9 `awk '{print $2}'`
sleep 2
fi

# start ad-server
cd /data/ad-push/ && /bin/bash /data/ad-push/start.sh start


添加执行权限
chmod +x /usr/local/zabbix-agent/scripts/restart_ad_server.sh

zabbix-server端操作


设置Action
Configuration-->Actions-->Create action

Action
在Action选项中,
定义Name:adpush_not_200_restart_ad_server
#action name自定义即可,action选项的其余部分可采用默认值,如下:


Conditions
在Conditions选项中添加新的条件判断,以使判断更有针对性,如
New condition:Trigger severity = Warning
New condition:Trigger name like ads_9010_status_not 200
#trigger name对应步骤1中定义的trigger name,如下:


Operations
在Operations选项中,添加新的”Action operation”,点击”New”,
Operation type:选择”Remote Command”
Target list:添加target为”Current host”
#agent在本机
Type:选择”Custom script”

Execute on:选择”Zabbix agent”,命令为 "sudo /bin/bash /usr/local/zabbix-agent/scripts/restart_ad_server.sh"



执行远程命令重新启动nginx服务举例:

#执行命令的账号是zabbix账号,非root账号,不采用sudo命令会导致命令执行后不生效
#另外需要说明是,尝试过使用具体的命令而非脚本,结果是命令执行了但不生效,因为没有具体的失败日志,也分析不出原因

#其余部分采用默认值,点击”Add”即可,如下:


问题:

但是执行命令失败,无法自动重启服务:于是授予zabbix所有用户权限
# allows 'zabbix' user to restart apache without password.
zabbix ALL=(ALL) NOPASSWD: ALL


修改restart_ad_server.sh
/usr/local/zabbix-agent/scripts/restart_ad_server.sh


#!/bin/bash
# kill ad-server process
ps -ef|grep ad-server-1.0.0.jar|/bin/kill `awk '{print $2}'`
sleep 2
# start ad-server

# start.sh使用绝对路径
cd /home/ad-push/ && /bin/bash /home/ad-push/start.sh start

#!/bin/bash
# kill ad-server process
ps -ef|grep ad-server-1.0.0.jar|/bin/kill `awk '{print $2}'`
sleep 2
ps -ef|grep ad-server-1.1.0.jar|/bin/kill `awk '{print $2}'`
sleep 2
# start ad-server
cd /data/ad-push/ && /bin/bash /data/ad-push/start.sh start
cd /data/ad-push2/ && /bin/bash /data/ad-push2/start.sh start


修改start.sh脚本如下:

java也使用绝对路径:

/home/java/jdk1.8.0_40/bin/java

#!/bin/bash
LANG="zh_CN.UTF-8"


APP_HOME=$(echo `pwd` | sed 's/bin//')
APPPIDFILE=$APP_HOME/app.pid


case $1 in
start)
    echo  "Starting server... "


    HEAP_MEMORY=1024m
    PERM_MEMORY=64m
    JMX_PORT=1111
    JMX_HOST=1.1.1.1
    JAVA_OPTS="-server -XX:+UseConcMarkSweepGC -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=jvm.log -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dsun.net.inetaddr.ttl=15 "


    shift
    ARGS=($*)
    for ((i=0; i<${#ARGS[@]}; i++)); do
        case "${ARGS[$i]}" in
        -D*)    JAVA_OPTS="${JAVA_OPTS} ${ARGS[$i]}" ;;
        -Heap*) HEAP_MEMORY="${ARGS[$i+1]}" ;;
        -Perm*) PERM_MEMORY="${ARGS[$i+1]}" ;;
        -JmxPort*)  JMX_PORT="${ARGS[$i+1]}" ;;
        -JmxHost*)  JMX_HOST = "${ARGS[$i+1]}" ;;
        esac
    done
    JAVA_OPTS="${JAVA_OPTS} -Xms${HEAP_MEMORY} -Xmx${HEAP_MEMORY} -XX:PermSize=${PERM_MEMORY} -XX:MaxPermSize=${PERM_MEMORY} -XX:MaxDirectMemorySize=128m -Dcom.sun.management.jmxremote.port=${JMX_PORT} -Djava.rmi.server.hostname=${JMX_HOST} -Dapp.home=${APP_HOME}"
    echo "start jvm args ${JAVA_OPTS}"
    nohup <span style="color:#ff0000;">/home/java/jdk1.8.0_40/bin/java</span> $JAVA_OPTS -cp .:./ad-server-1.0.0.jar org.springframework.boot.loader.JarLauncher  > /dev/null &
    echo $! > $APPPIDFILE
    echo STARTED
    ;;


stop)
    echo "Stopping server ... "
    if [ ! -f $APPPIDFILE ]
    then
        echo "error: count not find file $APPPIDFILE"
        exit 1
    else
        kill -9 $(cat $APPPIDFILE)
        rm $APPPIDFILE
        echo STOPPED
    fi
    ;;


*)
    echo "Please enter start|stop ... "
    ;;

esac

exit 0


也可以编辑/etc/profile,加入java的相关路径,然后在脚本中引入


#!/bin/bash
source /etc/profile
count_num=`ps -ef|grep yunva-sdk-port-1.0.0.jar |grep -v grep|wc -l`

if [ $count_num -ge 1 ];then
    ps -ef|grep yunva-sdk-port-1.0.0.jar|grep -v grep|kill -9 `awk '{print $2}'`
    sleep 2
fi

cd /home/yunva/sdk-port && /bin/bash start.sh start


原文地址:https://www.cnblogs.com/reblue520/p/6784519.html