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#!/bin/bash

RD="\033[31m"      # 错误消息
GR="\033[32m"      # 成功消息
YL="\033[33m"      # 告警消息
BL="\033[36m"      # 日志消息
PL='\033[0m'

echo "#############################################################################"
echo -e "#                     一键安装 zabbix-agent4.2.6脚本                     #"
echo -e "# ${GR}作者${PL}: sre运维博客                                      #"
echo -e "# ${GR}网址${PL}: https:www.cnsre.cn                               #"
echo -e "# ${GR}文章地址${PL}: https://www.cnsre.cn/posts/210406132721/     #"
echo "#############################################################################"
server_ip=$1
VALID_CHECK=$(echo $server_ip|awk -F. '$1<=255&&$2<=255&&$3<=255&&$4<=255{print "yes"}')
if echo $server_ip|grep -E "^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$">/dev/null; then
    if [ $VALID_CHECK == "yes" ]; then
        echo -e "$GR 您的zabbix server IP 地址为：$server_ip $PL"
    else
        echo -e "$GR 您的zabbix server IP $server_ip 不可用!$PL"
    fi
else
echo -e "$RD 请输入zabbix server IP地址! $PL"
echo -e "$RD 如：sh $0 192.168.10.100 $PL"
exit 1
    fi

echo -e "$YL 是否确定安装 zabbix 4.2.6 版本?$PL"
read -r -p "确定请按 y 任意键则退出！请选择：[y/n]" input
    if [[ $input != "y" ]]; then
        exit 1
    else 
        echo -e "$GR 开始安装 zabbix-agent 4.2.6 版本$PL"
    fi

#定义变量
IP=$(ip addr | grep -E -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' | grep -E -v "^127\.|^255\.|^0\." | head -n 1)

checkwget=`rpm -qa wget`
if [ -z $checkwget ];then
  yum  install wget -y  
fi

echo  -e "$GR 下载zabbix-agent$PL"
sleep 0.5
wget http://repo.zabbix.com/zabbix/4.2/rhel/7/x86_64/zabbix-agent-4.2.6-1.el7.x86_64.rpm
rpm -ivh zabbix-agent-4.2.6-1.el7.x86_64.rpm
rm -rf zabbix-agent-4.2.6-1.el7.x86_64.rpm

echo -e "$GR 备份agent.conf配置文件$PL"
sleep 0.5
mv  /etc/zabbix/zabbix_agentd.conf /etc/zabbix/zabbix_agentd.conf.bak
touch /etc/zabbix/zabbix_agentd.conf

echo -e "$GR 正在写入配置文件$PL"
sleep 0.5
cat  >> /etc/zabbix/zabbix_agentd.conf  << EOF  
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=1
DebugLevel=3
Server=$server_ip
ListenPort=10050
ServerActive=$server_ip
Include=/etc/zabbix/zabbix_agentd.d/
Hostname=$IP
HostMetadata=zabbix.bsh
EOF

echo -e "$GR 启动zabbix-agent服务$PL"
systemctl start zabbix-agent && systemctl enable zabbix-agent 

zabbixagentpid=`ps -ef |grep zabbix_agentd|grep -w 'zabbix_agentd'|grep -v 'grep'|awk '{print $2}'`
if [ "$zabbixagentpid" ];then
      echo -e "$GR zabbix-agent 已经运行 $PL"
   else
    echo "$RD zabbix agent 安装失败！$PL"
fi