20.27 Introduction to Distribution System

Introduction to the distribution system

• Distribution system -expect explanation (that is, a distributed script)
• Scenes:
  • The business is getting bigger and bigger, the website app, back-end, and the programming language are php, so you need to configure lamp or lnmp, and it is best to upload the code to the server; but because the business increases, the code increases, and multiple machines will be used. Very troublesome; it only requires a distribution system to publish the code of each update to the server that needs to be updated
• expect, is a scripting language; through it, you can realize transmission and input commands (online code)
• First, prepare a template machine, the IP of the machine, the password of the corresponding user, synchronize the code through rsync, and execute some commands through expect