开发脚本自动部署及监控

Posted 2020-09-06

开发脚本自动部署及监控

I、部署nginx反向代理三个web服务，调度算法使用加权轮询；

#!/bin/sh   ngxStatus=`ps aux | grep -v grep |grep -c nginx`   function ngxProxyInstall() { if [ -e /usr/sbin/nginx ];then     echo "nginx already installed"     exit 110 else     yum install epel-release -y -q     yum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -q     yum install nginx -y -q     echo "install nginx successful" fi if [ -f /etc/nginx/nginx.conf ];then     /bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak     sed -ri ‘/^http/a\\t upstream luchuangao { \n\t server 192.168.152.135 weight=3;\n\t server 192.168.152.136;\n\t server 192.168.152.137;\n\t }‘ /etc/nginx/nginx.conf     sed -ri ‘/^ *location \/ \{/a\\t\t proxy_pass http://luchuangao;‘ /etc/nginx/nginx.conf     echo "Configuration successful" fi if [ $ngxStatus -lt 2 ];then     systemctl start nginx     echo "Start nginx successful" fi }   function nfsInstall() { if [ -e /usr/sbin/rpcinfo ];then     echo "nfs already installed"     exit 111 else     yum install rpcbind nfs-utils -y -q     echo "install NFS successful" fi   if [ ! -d /share ];then     mkdir -p /share     chmod -R o+w /share fi echo ‘/share 192.168.152.0/24(rw,sync,fsid=0)‘ > /etc/exports systemctl enable rpcbind.service systemctl enable nfs-server.service systemctl start rpcbind.service systemctl start nfs-server.service echo "Start NFS successful" }   ngxProxyInstall nfsInstall

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；

#!/bin/sh ngxStatus=`ps aux | grep -v grep |grep -c nginx` ipAddress="192.168.152.134" function ngxWebInstall(){ if [ -e /usr/sbin/nginx ];then     echo "nginx already installed"     exit 110 else     #yum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -q     yum install nginx -y -q     echo "install nginx successful" fi if [ -f /etc/nginx/nginx.conf ];then     /bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak     sed  -ri ‘/^ *location \/ \{/a\\t\t root /data/www/html;\n\t\t index index.html;‘ /etc/nginx/nginx.conf     mkdir -p /data/www/html     echo `hostname` > /data/www/html/index.html     echo "Configuration successful" fi if [ $ngxStatus -lt 2 ];then     systemctl start nginx     echo "Start nginx successful" fi }   function nfsInstall(){ if [ ! -e /usr/sbin/rpcinfo ];then     yum install rpcbind nfs-utils -y -q     echo "install NFS successful" fi systemctl enable rpcbind.service systemctl enable nfs-server.service systemctl start rpcbind.service systemctl start nfs-server.service mount -t nfs $ipAddress:/share /data/www/html/ echo "welcome luchuangao" > /data/www/html/test.html }   ngxWebInstall nfsInstall

2.编写监控脚本，监控集群内 Nginx、NFS 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

#!/usr/bin/python # -*- coding: UTF-8 -*- import sys import smtplib import email.mime.multipart import email.mime.text   server = ‘smtp.163.com‘ port = ‘25‘ def sendmail(server,port,user,pwd,msg):     smtp = smtplib.SMTP()     smtp.connect(server,port)     smtp.login(user, pwd)     smtp.sendmail(msg[‘from‘], msg[‘to‘], msg.as_string())     smtp.quit()     print(‘邮件发送成功email has send out !‘)     if __name__ == ‘__main__‘:     msg = email.mime.multipart.MIMEMultipart()     msg[‘Subject‘] = ‘你是风儿我是沙，缠缠绵绵回我家‘     msg[‘From‘] = ‘[email protected]‘     msg[‘To‘] = ‘[email protected]‘     user = ‘python4_mail‘     pwd = ‘sbalex3714‘     content=‘%s\n%s‘ %(‘\n‘.join(sys.argv[1:4]),‘ ‘.join(sys.argv[4:])) #格式处理，专门针对我们的邮件格式       txt = email.mime.text.MIMEText(content, _charset=‘utf-8‘)     msg.attach(txt)

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

步骤三：然后新建监控脚本sysCheck.sh

#!/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

3.编写计划任务，定时运行监控脚本，完成监控操作

 * * * * * /shell/sysCheck.sh