Ansible_commands.md

1. ping all hosts:

ansible all -m ping

2. using user

ansible all -m ping -u bruce

3. Using sudo

ansible all -m ping -u bruce --sudo 
ansible all -m ping -u bruce --sudo --sudo-user batman

# as bruce, sudoing to batman
$ ansible all -m ping -u bruce -b --become-user batman

4. Run commands

$ ansible all -a "/bin/echo hello"
$ ansible remote_host -a "commands"

5. file transfer

$ ansible atlanta -m copy -a "src=/etc/hosts dest=/tmp/hosts"

6. Managing packages

$ ansible webservers -m yum -a "name=acme state=present"

7. Managing services

$ ansible webservers -m service -a "name=httpd state=started"

8. check syntax of playbook using --syntax-check

9. list all host affected

ansible-playbook playbook.yml --list-hosts