Ansible

ansible options

-l SUBSET, --limit SUBSET                  (further limit selected hosts to an additional pattern)
-t TAGS, --tags TAGS                       (only run plays and tasks tagged with these values)
-e EXTRA_VARS, --extra-vars EXTRA_VARS     (set additional variables as key=value or YAML/JSON, if filename prepend with @)

dont fail on errors

ignore_errors: yes

Start where you left off

ansible-playbook playbook.yml --start-at-task="install packages"

adhoc command

ansible remote.host -u ${USER}_sysadmin -a id