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updated intro adhoc to use become

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Brian Coca 2016-01-29 17:46:18 -05:00
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docsite/rst/intro_adhoc.rst
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@ -11,12 +11,11 @@ ad hoc tasks.
What's an ad-hoc command? What's an ad-hoc command?
An ad-hoc command is something that you might type in to do something really An ad-hoc command is something that you might type in to do something really
quick, but don't want to save for later. quick, but don't want to save for later.
This is a good place to start to understand the basics of what Ansible can do This is a good place to start to understand the basics of what Ansible can do
prior to learning the playbooks language -- ad-hoc commands can also be used prior to learning the playbooks language -- ad-hoc commands can also be used
to do quick things that you might not necessarily want to write a full playbook to do quick things that you might not necessarily want to write a full playbook for.
for.
Generally speaking, the true power of Ansible lies in playbooks. Generally speaking, the true power of Ansible lies in playbooks.
Why would you use ad-hoc tasks versus playbooks? Why would you use ad-hoc tasks versus playbooks?
@ -25,7 +24,7 @@ For instance, if you wanted to power off all of your lab for Christmas vacation,
you could execute a quick one-liner in Ansible without writing a playbook. you could execute a quick one-liner in Ansible without writing a playbook.
For configuration management and deployments, though, you'll want to pick up on For configuration management and deployments, though, you'll want to pick up on
using '/usr/bin/ansible-playbook' -- the concepts you will learn here will using '/usr/bin/ansible-playbook' -- the concepts you will learn here will
port over directly to the playbook language. port over directly to the playbook language.
(See :doc:`playbooks` for more information about those) (See :doc:`playbooks` for more information about those)
@ -60,25 +59,24 @@ behavior, pass in "-u username". If you want to run commands as a different use
$ ansible atlanta -a "/usr/bin/foo" -u username $ ansible atlanta -a "/usr/bin/foo" -u username
Often you'll not want to just do things from your user account. If you want to run commands through sudo:: Often you'll not want to just do things from your user account. If you want to run commands through privilege escalation::
$ ansible atlanta -a "/usr/bin/foo" -u username --sudo [--ask-sudo-pass] $ ansible atlanta -a "/usr/bin/foo" -u username --become [--ask-become-pass]
Use ``--ask-sudo-pass`` (``-K``) if you are not using passwordless Use ``--ask-become-pass`` (``-K``) if you are not using a passwordless privilege escalation method (sudo/su/pfexec/doas/etc).
sudo. This will interactively prompt you for the password to use. This will interactively prompt you for the password to use.
Use of passwordless sudo makes things easier to automate, but it's not Use of a passwordless setup makes things easier to automate, but it's not required.
required.
It is also possible to sudo to a user other than root using It is also possible to become a user other than root using
``--sudo-user`` (``-U``):: ``--become-user``::
$ ansible atlanta -a "/usr/bin/foo" -u username -U otheruser [--ask-sudo-pass] $ ansible atlanta -a "/usr/bin/foo" -u username --become-user otheruser [--ask-become-pass]
.. note:: .. note::
Rarely, some users have security rules where they constrain their sudo environment to running specific command paths only. Rarely, some users have security rules where they constrain their sudo/pbrun/doas environment to running specific command paths only.
This does not work with ansible's no-bootstrapping philosophy and hundreds of different modules. This does not work with ansible's no-bootstrapping philosophy and hundreds of different modules.
If doing this, use Ansible from a special account that does not have this constraint. If doing this, use Ansible from a special account that does not have this constraint.
One way of doing this without sharing access to unauthorized users would be gating Ansible with :doc:`tower`, which One way of doing this without sharing access to unauthorized users would be gating Ansible with :doc:`tower`, which
can hold on to an SSH credential and let members of certain organizations use it on their behalf without having direct access. can hold on to an SSH credential and let members of certain organizations use it on their behalf without having direct access.