linux開發腳本自動部署及監控

開發腳本自動部署及監控
一、編寫腳本自動部署反向代理、web、nfs；
要求：
1、部署nginx反向代理三個web服務，調度算法使用加權輪詢；

#!/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 192.168.10.27 weight=3;\n\t server 192.168.10.28;\n\t server 192.168.10.29;\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 192.168.10.0/24(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

2、所有web服務使用共享存儲nfs，保證所有web都對其有讀寫權限，保證數據一致性；

#!/bin/sh
 
ngxStatus=`ps aux | grep -v grep |grep -c nginx`
ipAddress="192.168.10.26"
 
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

二、編寫監控腳本，監控集群內所有服務存活狀態，內存、磁盤剩余率檢測，異常則發送報警郵件

步驟一：準備發送郵件的工具

#!/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(‘郵件發送成功 電子郵件已發送!‘)
 
 
if __name__ == ‘__main__‘:
    msg = email.mime.multipart.MIMEMultipart()
    msg[‘Subject‘] = ‘內存磁盤使用率超過設置標準，請趕快回家看看‘
    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:])) #格式處理，專門針對我們的郵件格式
 
    txt = email.mime.text.MIMEText(content, _charset=‘utf-8‘)
    msg.attach(txt)

步驟二：將上述文件內容拷貝到/usr/bin/my_mail

chmod+x  /usr/bin/my_mail

步驟三：然後新建監控腳本

vim sysCheck.sh

#!/bin/sh
 
function ngxMonitor(){  #監控nginx服務
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(){ #監控nfs服務
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(){  #監控內存
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(){  #監控磁盤
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

三、編寫計劃任務，定時運行監控腳本，完成監控操作

* * * * * /shell/sysCheck.sh

linux開發腳本自動部署及監控