开发脚本自动部署及监控
一、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；
I、
#!/bin/bash
ngxstatus=`ps -aux |grep -v grep |grep -c nginx`
function proxyinstall(){
if [ -e /usr/sbin/nginx ];
then
echo 'nginx is already installed'p
exit 0000
else
yum clean all
yum install epel-release -y
yum install nginx -y
echo 'nginx ok'
fi
if [ -e /etc/nginx/nginx.conf ];
then
/usr/bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak
sed -ri '/^http/a\\t upstream webgroup { \n\t server 192.168.11.94 weight=3;<br> \n\t server 192.168.11.96;\n\t server 192.168.11.97;\n\t }' /etc/nginx/nginx.conf
sed -ri '/^ *location \/ \{/a\\t\t proxy_pass http:\/\/webgroup;' /etc/nginx/nginx.conf
echo "12321" >/usr/share/nginx/html/index.html
echo 'nginx.conf is ok'
fi
if [ $ngxstatus -lt 2 ];
then
systemctl start nginx
echo 'nginx active'
fi
}
function nfsinstall(){
if [ -e /usr/sbin/nfs ];
then
echo'nfs is already installed'
exit 0000
else
yum clean all
yum install rpcbind nfs-utils -y
echo 'nfs ok'
fi
if [ -z /etc/exports ];
then
echo '/share 192.168.11.0/24(rw,sync,fsid=0)' > /etc/exports
echo 'exports ok'
fi
mkdir /share
chmod -R o+w /share
mount -t nfs 192.168.11.58:/share /usr/share/nginx/html
systemctl enable nfs-server.service
systemctl enable rpcbind.service
systemctl start rpcbind.service
systemctl start nfs-server.service
}
proxyinstall
nfsinstall
II、
#!/bin/bash
ngxstatus=`ps -aux |grep -v grep |grep -c nginx`
function ngxwebinstall(){
if [ -e /usr/sbin/nginx ];
then
echo 'nginx installed'p
exit 0000
else
yum clean all
yum install epel-release -y
yum install nginx -y
echo 'nginx ok'
fi
if [ -e /etc/nginx/nginx.conf ];
then
/usr/bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak
sed -ri '/^ *location \/ \{/a\\t\t root /usr/share/nginx/html;' /etc/nginx/nginx.conf
echo "23432" >/usr/share/nginx/html/index.html
echo 'nginx.conf is ok'
fi
if [ $ngxstatus -lt 2 ];
then
systemctl start nginx
echo 'nginx active'
fi
}
function nfswebinstall(){
if [ -e /usr/sbin/nfs ];
then
echo'nfs installed'
exit 0000
else
yum clean all
yum install rpcbind nfs-utils -y
echo 'nfs ok'
fi
if [ -z /etc/exports ];
then
echo '/share 192.168.11.0/24(rw,sync,fsid=0)' > /etc/exports
echo 'exports ok'
fi
mount -t nfs 192.168.11.58:/share /usr/share/nginx/html
systemctl enable nfs-server.service
systemctl enable rpcbind.service
systemctl start rpcbind.service
systemctl start nfs-server.service
}
ngxwebinstall
nfswebinstal
二、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
1、准备发送邮件工具
#!/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'] = '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)
sendmail(server,port,user,pwd,msg)
2、将上述内容拷贝到/usr/bin/mail并chmod +x /usr/bin/mail
3、然后新建监控脚本servermonitor.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
echo "bc install successful"
fi
if [ $mem_per -gt 80 ];
then
msg="TIME:$(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
}
ngxmonitor &>>/tmp/monitor.log
nfsmonitor &>>/tmp/monitor.log
memmonitor &>>/tmp/monitor.log
三、编写计划任务，定时运行监控脚本，完成监控操作
* * * * * /shell/sysjk.sh<br>
