shell脚本
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；
要求：
I、部署nginx反向代理三个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；
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
3.编写计划任务，定时运行监控脚本，完成监控操作
1.编写脚本自动部署反向代理、web、nfs；
要求：
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；
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#!/bin/bash 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 192.168.239.0/24(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；
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#!/bin/sh ngxStatus=`ps aux | grep -v grep |grep -c nginx` ipAddress="192.168.239.136" 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
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#!/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'] = 'python4_mail@163.com' msg['To'] = 'python4_recvmail@163.com' 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
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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 |
3.编写计划任务，定时运行监控脚本，完成监控操作
* * * * * /shell/sysCheck.sh
