Cloud-Init

IMAGE GALLERY (0)

A technology for automatically configuring Ubuntu Server as it boots into the cloud, turning it from a generic Ubuntu image into a configured server in a few seconds, quickly and easily There are lots of install technologies - Ubuntu also supports Kickstart, but that does not matter.

What is cloud init?

• cloud technology for initializing ubuntu cloud images
• AMI-AWS Image -> Customize it to final purpose
  • Install softwares
  • Create users
  • import SSH keys
  • run shell scripts
• Customization Script is the place to insert config
• ¹Examples²

ls /sys/class/net

or

ip addr

Re-run cloud-init config

cloud-init.service
journalctl --unit cloud-init.service -o cat

cloud-init clean
cloud-init init
cloud-init query --list-keys
cloud-init features

packages:
    - tree
    - nginx

groups:
    - avi

users:
    - default`
    - name: avi
      sudo: true

runcmd:
    - [ ls, -l, / ]
    - [ sh, -xc, "echo $(date) ': hello world!'" ]
    - [ sh, -c, echo "=========hello world'=========" ]
    - ls -l /root
    - [ wget, "http://example.org", -O, /tmp/index.html ]

final_message: CLOUD-INIT FINISHED

Footnotes