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ansible/examples/playbooks/playbook.yml

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YAML

---
# this is an annotated example of some features available in playbooks
# it shows how to make sure packages are updated, how to make sure
# services are running, and how to template files. It also demos
# change handlers that can restart things (or trigger other actions)
# when resources change. For more advanced examples, see example2.yml
# on all hosts, run as the user root...
- hosts: all
user: root
# make these variables available inside of templates
# for when we use the 'template' action/module later on...
vars:
http_port: 80
max_clients: 200
# define the tasks that are part of this play...
tasks:
# task #1 is to run an arbitrary command
# we'll simulate a long running task, wait for up to 45 seconds, poll every 5
# obviously this does nothing useful but you get the idea
- name: longrunner
action: command /bin/sleep 15
async: 45
poll: 5
# let's demo file operations.
#
# We can 'copy' files or 'template' them instead, using jinja2
# as the templating engine. This is done using the variables
# from the vars section above mixed in with variables bubbled up
# automatically from tools like facter and ohai. 'copy'
# works just like 'template' but does not do variable subsitution.
#
# If and only if the file changes, restart apache at the very
# end of the playbook run
- name: write some_random_foo configuration
action: template src=templates/foo.j2 dest=/etc/some_random_foo.conf
notify:
- restart apache
# make sure httpd is installed at the latest version
- name: install httpd
action: yum pkg=httpd state=latest
# make sure httpd is running
- name: httpd start
action: service name=httpd state=started
# handlers are only run when things change, at the very end of each
# play. Let's define some. The names are significant and must
# match the 'notify' sections above
handlers:
# this particular handler is run when some_random_foo.conf
# is changed, and only then
- name: restart apache
action: service name=httpd state=restarted