开发脚本自动部署及监控

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 110else 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"fiif [ -f /etc/nginx/nginx.conf ];then /bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak sed -ri '/^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 /etc/nginx/nginx.conf echo "Configuration successful"fiif [ $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 111else yum install rpcbind nfs-utils -y -q echo "install NFS successful"fi if [ ! -d /share ];then mkdir -p /share chmod -R o+w /sharefiecho '/share 192.168.152.0/24(rw,sync,fsid=0)' > /etc/exportssystemctl enable rpcbind.servicesystemctl enable nfs-server.servicesystemctl start rpcbind.servicesystemctl start nfs-server.serviceecho "Start NFS successful"} ngxProxyInstallnfsInstall

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/shngxStatus=`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 110else #yum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -q yum install nginx -y -q echo "install nginx successful"fiif [ -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/index index.html;' /etc/nginx/nginx.conf mkdir -p /data/ echo `hostname` > /data/ echo "Configuration successful"fiif [ $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"fisystemctl enable rpcbind.servicesystemctl enable nfs-server.servicesystemctl start rpcbind.servicesystemctl start nfs-server.servicemount -t nfs $ipAddress:/share /data/"welcome luchuangao" > /data/ngxWebInstallnfsInstall

步骤一：准备发送邮件的工具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

#!/usr/bin/python# -*- coding: UTF-8 -*-import sysimport smtplibimport email.mime.multipartimport 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)

步骤三：然后新建监控脚本sysCheck.sh步骤二：将上述文件内容拷贝到/usr/bin/my_mail并chmod+x /usr/bin/my_mail

#!/bin/sh function ngxMonitor(){ #监控nginx服务ps aux | grep nginx| grep -v grep &>/dev/nullif [ $? -ne 0 ];then msg="TIME:$(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 nginxfi} function nfsMonitor(){ #监控nfs服务ps aux | grep nfs| grep -v grep &>/dev/nullif [ $? -ne 0 ];then msg="TIME:$(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 nginxfi} 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"fiif (( $mem_per > 10 )); then msg="TIME:$(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 $msgfi} 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 $msgfi} ngxMonitor &>>/tmp/monitor.lognfsMonitor &>>/tmp/monitor.logmemMonitor &>>/tmp/monitor.logdiskMonitor &>>/tmp/monitor.log

* * * * * /shell/sysCheck.sh3.编写计划任务，定时运行监控脚本，完成监控操作

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