Assigning GOCD agents with Ansible. You need a linux machine containing Ansible, thats why we use Vagrant.

How?

• Your ansible installed linux machine, or vagranted virtual machine connects to each host mentioned in hosts
• It installs go-agent, docker and docker compose
• Related configuration is introduced
• Done!

Installs Go Agent version 17.2.0-4587

Prerequisites

• You already installed Vagrant and Oracle Virtual Machine.
• Change agent ip list in hosts file
• Change docker registry server ip in daemon.json

Creating a new virtual machine consisting ansible

• Go to the root directory in bash/cmd. (root dir consists Vagrantfile)
• vagrant up

Once Vagrant set the new vm, go inside it by: vagrant ssh

One time setup:

Adding your generated ssh key to the remotes: for each remote:

ubuntu@ubuntu-xenial:~$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ubuntu/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/ubuntu/.ssh/id_rsa.
Your public key has been saved in /home/ubuntu/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:FoOStEG/xqbJuY/5Nu/IruFylc2k0SQwE8Llbi3IR0s ubuntu@ubuntu-xenial
The key's randomart image is:
+---[RSA 2048]----+
| ..oXo           |
|  .+ B...        |
|    E o+o        |
| . = =..oo       |
|  o * *BS        |
|   + B+.o        |
|    *.           |
|  ...*o.         |
|   o***+o        |
+----[SHA256]-----+
ubuntu@ubuntu-xenial:~$

$ ssh-copy-id root@REMOTE_IP

Assigining agents

• change hosts file
• run ansible-playbook -i hosts -s -u root assign_agent.yml

Agent restart may be needed for assigning docker group