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@ -424,82 +424,84 @@ specific variables with a particular linefeed style.
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.. _ansible_tempfiles:
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.. _ansible_tempfiles:
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Temporary Files
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...
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~~~~~~~~~~~~~~~
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Temporary Files
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Temporary file handling in Ansible is incredibly tricky business, and the exact
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~~~~~~~~~~~~~~~
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behaviour varies across major releases.
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Temporary file handling in Ansible is incredibly tricky business, and the exact
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Ansible creates a variety of temporary files and directories depending on its
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behaviour varies across major releases.
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operating mode.
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Ansible creates a variety of temporary files and directories depending on its
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In the best case when pipelining is enabled and no temporary uploads are
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operating mode.
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required, for each task Ansible will create one directory below a
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system-supplied temporary directory returned by :func:`tempfile.mkdtemp`, owned
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In the best case when pipelining is enabled and no temporary uploads are
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by the target account a new-style module will execute in.
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required, for each task Ansible will create one directory below a
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system-supplied temporary directory returned by :func:`tempfile.mkdtemp`, owned
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In other cases depending on the task type, whether become is active, whether
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by the target account a new-style module will execute in.
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the target become user is privileged, whether the associated action plugin
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needs to upload files, and whether the associated module needs to store files,
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In other cases depending on the task type, whether become is active, whether
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Ansible may:
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the target become user is privileged, whether the associated action plugin
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needs to upload files, and whether the associated module needs to store files,
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* Create a directory owned by the SSH user either under ``remote_tmp``, or a
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Ansible may:
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system-default directory,
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* Upload action dependencies such as non-new style modules or rendered
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* Create a directory owned by the SSH user either under ``remote_tmp``, or a
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templates to that directory via `sftp(1)`_ or `scp(1)`_.
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system-default directory,
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* Attempt to modify the directory's access control list to grant access to the
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* Upload action dependencies such as non-new style modules or rendered
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target user using `setfacl(1) <https://linux.die.net/man/1/setfacl>`_,
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templates to that directory via `sftp(1)`_ or `scp(1)`_.
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requiring that tool to be installed and a supported filesystem to be in use,
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* Attempt to modify the directory's access control list to grant access to the
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or for the ``allow_world_readable_tmpfiles`` setting to be :data:`True`.
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target user using `setfacl(1) <https://linux.die.net/man/1/setfacl>`_,
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* Create a directory owned by the target user either under ``remote_tmp``, or
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requiring that tool to be installed and a supported filesystem to be in use,
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a system-default directory, if a new-style module needs a temporary directory
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or for the ``allow_world_readable_tmpfiles`` setting to be :data:`True`.
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and one was not previously created for a supporting file earlier in the
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* Create a directory owned by the target user either under ``remote_tmp``, or
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invocation.
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a system-default directory, if a new-style module needs a temporary directory
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and one was not previously created for a supporting file earlier in the
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In summary, for each task Ansible may create one or more of:
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invocation.
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* ``~ssh_user/<remote_tmp>/...`` owned by the login user,
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In summary, for each task Ansible may create one or more of:
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* ``$TMPDIR/ansible-tmp-...`` owned by the login user,
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* ``$TMPDIR/ansible-tmp-...`` owned by the login user with ACLs permitting
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* ``~ssh_user/<remote_tmp>/...`` owned by the login user,
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write access by the become user,
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* ``$TMPDIR/ansible-tmp-...`` owned by the login user,
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* ``~become_user/<remote_tmp>/...`` owned by the become user,
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* ``$TMPDIR/ansible-tmp-...`` owned by the login user with ACLs permitting
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* ``$TMPDIR/ansible_<modname>_payload_.../`` owned by the become user,
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write access by the become user,
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* ``$TMPDIR/ansible-module-tmp-.../`` owned by the become user.
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* ``~become_user/<remote_tmp>/...`` owned by the become user,
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* ``$TMPDIR/ansible_<modname>_payload_.../`` owned by the become user,
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* ``$TMPDIR/ansible-module-tmp-.../`` owned by the become user.
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Mitogen for Ansible
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^^^^^^^^^^^^^^^^^^^
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Mitogen for Ansible
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Temporary h
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^^^^^^^^^^^^^^^^^^^
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Temporary directory handling is fiddly and varies across major Ansible
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releases.
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Temporary h
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Temporary directory handling is fiddly and varies across major Ansible
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releases.
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Temporary directories must exist to maintain compatibility with Ansible, as
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many modules introspect :data:`sys.argv` to find a directory where they may
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write files, however only one directory exists for the lifetime of each
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Temporary directories must exist to maintain compatibility with Ansible, as
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interpreter, its location is consistent for each target account, and it is
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many modules introspect :data:`sys.argv` to find a directory where they may
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always privately owned by that account.
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write files, however only one directory exists for the lifetime of each
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interpreter, its location is consistent for each target account, and it is
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The paths below are tried until one is found that is writeable and lives on a
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always privately owned by that account.
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filesystem with ``noexec`` disabled:
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The paths below are tried until one is found that is writeable and lives on a
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1. ``$variable`` and tilde-expanded ``remote_tmp`` setting from
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filesystem with ``noexec`` disabled:
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``ansible.cfg``
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2. ``$variable`` and tilde-expanded ``system_tmpdirs`` setting from
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1. ``$variable`` and tilde-expanded ``remote_tmp`` setting from
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``ansible.cfg``
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``ansible.cfg``
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3. ``TMPDIR`` environment variable
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2. ``$variable`` and tilde-expanded ``system_tmpdirs`` setting from
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4. ``TEMP`` environment variable
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``ansible.cfg``
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5. ``TMP`` environment variable
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3. ``TMPDIR`` environment variable
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6. ``/tmp``
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4. ``TEMP`` environment variable
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7. ``/var/tmp``
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5. ``TMP`` environment variable
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8. ``/usr/tmp``
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6. ``/tmp``
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9. Current working directory
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7. ``/var/tmp``
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8. ``/usr/tmp``
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The directory is created once at startup, and subdirectories are automatically
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9. Current working directory
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created and destroyed for every new task. Management of subdirectories happens
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on the controller, but management of the parent directory happens entirely on
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The directory is created once at startup, and subdirectories are automatically
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the target.
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created and destroyed for every new task. Management of subdirectories happens
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on the controller, but management of the parent directory happens entirely on
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the target.
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.. _ansible_process_env:
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.. _ansible_process_env:
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David Wilson
7 years ago