开发脚本自动部署及监控

1.编写脚本自动部署反向代理、web、nfs；

I、部署nginx反向代理两个web服务，调度算法使用加权轮询

II、所有web服务使用共享存储nfs，保证所有web都对其有读写权限，保证数据一致性；

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proxy      192.168.11.62     #nginx代理，nfs服务端
web01     192.168. 11.74    #web01,nfs客户端
web02      192.168.11.75    #web02,nfs客户端
 
#poxy上安装nginx代理，nfs客户端，脚本如下
[root@proxy mnt]# cat install_nginx.sh
#!/bin/bash
#insatll nginx proxy
  
IP=`ifconfig | awk -F" " '/inet/{print $2}' | head -1`
  
#insyall nginx proxy
function install_nginx() {
yum remove nginx -y
yum install nginx -y
touch /etc/nginx/conf.d/proxy.conf
cat > /etc/nginx/conf.d/proxy.conf <<EOF
    upstream web {
        server 192.168.11.74;
        server 192.168.11.75;
    }
    
    server {
        listen 80;
        server_name $IP;
        location / {
            proxy_pass http://web;
        }
    }
EOF
systemctl start nginx
}
 
#install nfs server
function install_nfs_server() {
yum install rpcbind nfs-utils -y
[ -d /share ] || mkdir  /share && chmod o+w /share
echo "/share 192.168.11.62/24(rw,sync,fsid=0)" > /etc/exports
systemctl start rpcbind.service
systemctl start nfs-server.service
}
while :
do
    read -p "please choice your install server{nginx|nfs}: " server
    if [ $server = "nginx" ]
    then
        install_nginx
    elif [ $server = "nfs" ]
    then
        install_nfs_server
    else
        exit
    fi
done
 
 
#web01安装nginx web 和nfs客户端
[root@web01 mnt]# cat install_nginx.sh
#!/bin/bash
#insatll nginx proxy
  
IP=`ifconfig | awk -F" " '/inet/{print $2}' | head -1`
  
#insyall nginx proxy
function install_nginx() {
yum install nginx -y
echo "welcome to web01" >/usr/share/nginx/html/index.html
systemctl start nginx
}
 
#install nfs server
function install_nfs_server() {
yum install rpcbind nfs-utils -y
systemctl start rpcbind.service
systemctl start nfs-server.service
mount -t nfs 192.168.11.62:/share /usr/share/nginx/html/
}
while :
do
    read -p "please choice your install server{nginx|nfs}: " server
    if [ $server = "nginx" ]
    then
        install_nginx
    elif [ $server = "nfs" ]
    then
        install_nfs_server
    else
        exit
    fi
done

2.编写监控脚本，监控集群内所有服务存活状态，内存、磁盘剩余率检测，异常则发送报警邮件

步骤一：准备发送邮件的工具

步骤二：将上述文件内容拷贝到/usr/bin/mail并chmod+x /usr/bin/mail

步骤三：然后新建监控脚本servermonitor.sh

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#!/bin/sh
  
function ngxMonitor(){  #监控nginx服务
ps aux | grep nginx| grep -v grep &>/dev/null
if [ $? -ne 0 ];then
    msg="TIME:$(date +%F_%T)
         HOSTNAME:$(hostname)
         IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')
         MSG:Nginx program is crash, Waiting to restart"
    echo $msg
    /usr/bin/my_mail $msg
    systemctl restart nginx
fi
}
  
function nfsMonitor(){ #监控nfs服务
ps aux | grep nfs| grep -v grep &>/dev/null
if [ $? -ne 0 ];then
    msg="TIME:$(date +%F_%T)
         HOSTNAME:$(hostname)
         IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')
         MSG:NFS program is crash, Waiting to restart"
    echo $msg
    /usr/bin/my_mail $msg
    systemctl restart nginx
fi
}
  
function memMonitor(){  #监控内存
mem_use=`free | awk 'NR==2{print $3}'`
mem_total=`free | awk 'NR==2{print $2}'`
mem_per=`echo "scale=2;$mem_use/$mem_total"|bc -l |cut -d . -f2`
  
if [ ! -e /usr/bin/bc ];then
    yum install bc -y -q
    echo "bc install successful"
fi
if (( $mem_per > 10 )); then
    msg="TIME:$(date +%F_%T)
         HOSTNAME:$(hostname)
         IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')
         MSG:Memory usage exceeds the limit,current value is ${mem_per}%"
         echo $msg
         /usr/bin/my_mail $msg
fi
}
  
function diskMonitor(){  #监控磁盘
space_use=`df $disk |awk 'NR==2{print $5}'|cut -d% -f1`
  
if [ $space_use -gt 80 ];then
    msg="TIME:$(date +%F_%T)
         HOSTNAME:$(hostname)
         IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')
         MSG:Disk space usage exceeds the limit,current value is ${space_use}%"
    echo $msg
    /usr/bin/my_mail $msg
fi
}
  
  
ngxMonitor  &>>/tmp/monitor.log
nfsMonitor  &>>/tmp/monitor.log
memMonitor  &>>/tmp/monitor.log
diskMonitor &>>/tmp/monitor.log

步骤四：计划任务

1
* * * * * /shell/sysCheck.sh
posted on 2017-03-27 08:30  Baby&Lady  阅读(194)  评论(0)    收藏  举报