Ansible: deploy on multiple hosts in the same time

Question

Is it possible to run ansible playbook, which looks like this (it is an example from this site: http://docs.ansible.com/playbooks_roles.html):

- name: this i         


        

Answer 1

In my case I needed the configuration stage to be blocking as a whole, but execute each role in parallel. I've tackled this issue using the following code:

echo webserver loadbalancer database | tr ' ' '\n' \
| xargs -I % -P 3 bash -c 'ansible-playbook $1.yml' -- %

the -P 3 argument in xargs makes sure that all the commands are ran in parallel, each command executes the respective playbook and the command as a whole blocks until all parts are finished.