operations-handbook

Operations Handbook for Cloud Services

Servers

Documented on the wiki

Ansible

Important files:

• hosts

• Common

  • SSH keys

Important commands

(all run from the ansible/ directory):

Check connectivity and authentication to all servers

ansible all -i hosts -a "uptime"

Dry-run check configuration against all servers

ansible-playbook -i hosts main.yml --check --diff

When these commands ask for the SSL key passphrase, you can press enter without providing it if you are not expecting to deploy SSL keys.

Apply configuration on all servers

ansible-playbook -i hosts main.yml

Apply configuration on one server only

ansible-playbook -i hosts -l <hostname> main.yml

where <hostname> is one of the full hostnames from the hosts file.

Install updates

ansible all -i hosts -a "apt-get update"
ansible all -i hosts -a "apt-get upgrade -s"
ansible all -i hosts -a "apt-get upgrade -y"