Linux Basic work article

1. Automatic deployment of reverse Proxy web NFS

#!/usr/bin/python#-*-coding:utf-8-*-#automated deployment and monitoring of development scripts#1. Scripting automatic deployment of reverse proxy, web, NFS;#!/bin/bash#Detect installation Nginxfunction Detection_nginx () {if[-f/etc/nginx/nginx.conf]#determine if the Nginx file existsThen Echo'Nginx has been installed'ExitElseThen yum Install Epel-release-y yum install nginx-y Echo'Nginx already installed'fi}#Overwrite configuration filefunction modify_nginx_conf () {msg='upstream pythonweb{server 192.168.205.129 weight=3;server 192.168.205.129;server 192.168.205.129}'sed-ri"/^http/a $msg"/etc/nginx/nginx.conf#Increase upstreamSed-ri"/^ *location \ \{$/a proxy_pass http://pythonweb\;"/etc/nginx/nginx.conf#Modify Localtion}systemctl Reload Nginx#Reload Nginx#Detect and install NFS and Rpcbindfunction Detection_nfs () {if[-d/var/lib/NFS] then echo'NFS has been installed'ExitElseThen yum Install rpcbind NFS-utils-y Echo'rpcbind nfs-utils already installed'fi}function Start_service () {#Create a shared directorymkdir/Share#Add Write permissions to the userChmod-r o+w/share/#Overwrite the NFS configuration fileEcho'/share 192.168.205.0/24 (rw,sync,fsid=0)'>>/etc/exports#write in Append mode    #Start the servicesystemctl start rpcbind.server systemctl start NFS-Utils.server#Set boot upSystemctl Enable nfs-server.service systemctl Enable Rpcbind.service}detection_nginx#perform the instrumentation installation Nginx functionModify_nginx_conf#perform the overwrite nginx.conf functionDetection_nfs#Perform a Detection install NFS functionStart_service#executing the start service function

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2. Monitor the memory of the host and send alarm messages if the threshold is exceeded

#!/usr/bin/python#-*-coding:utf-8-*-title: Monitoring the Memory of the host, exceeding the threshold to send alarm messages1. Prepare code to send mail#!/usr/bin/python#-*-coding:utf-8-*-ImportSYSImportSmtplibImportEmail.mime.multipartImportEmail.mime.textserver='smtp.163.com'Port=' -'defSendMail (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('Mail sent successfully email has send out!')if __name__=='__main__': Msg=Email.mime.multipart.MIMEMultipart () msg['Subject'] ='you are the wind, I am the sand, wrapped around my home'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:]))#format processing, specifically for our message formattxt= Email.mime.text.MIMEText (Content, _charset='Utf-8') Msg.attach (TXT) sendmail (server,port,user,pwd,msg)#Put the above code in the/usr/bin/my_mailVim/usr/bin/my_mail#Copy the code inside .chmod +x My_mail#permissions that can be performed on a file My_mail2. Create my own script monitoring file 15.sh#!/bin/bashMen = 0#memory usage over 0% will alert you .function Monitor_mem () {mem_total='Free | awk'nr==2{Print$/$}"'                                             "'Mem_use='Free | awk'nr==2{Print$-$}"'Mem_per='echo "scale=2; $mem _use/$mem _total" |bc-l |cut-d.-f2'    if[$mem _per-GT $ mem] then msg='time:$ (date +%f_%t)'hostnam:$ (hostname) ipaddr:$ (ifconfig| Awk'Nr==2{print $}') echo $msg/usr/bin/my_mail $mag fi}#3. Writing a scheduled taskcrontab-E-u root* * * * * */root/home/gandong/15.sh restart#test every Minute

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Linux Basic work article