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grembo 2416b81aa4
passwordstore: Add configurable locking (#4194)
* passwordstore: Add configurable locking

Passwordstore cannot be accessed safely in parallel, which causes
various issues:

- When accessing the same path, multiple different secrets are
  returned when the secret didn't exist (missing=create).
- When accessing the same _or different_ paths, multiple pinentry
  dialogs will be spawned by gpg-agent sequentially, having to enter
  the password for the same gpg key multiple times in a row.
- Due to issues in gpg dependencies, accessing gpg-agent in parallel
  is not reliable, causing plays to fail (this can be fixed by adding
  `auto-expand-secmem` to _~/.gnupg/gpg-agent.conf_ though).

These problems have been described in various github issues in the past,
e.g., ansible/ansible#23816 and ansible/ansible#27277.

This cannot be worked around in playbooks by users in a non-error-prone
way.

It is addressed by adding new configuration options:

- lock:
  - readwrite: Lock all operations
  - write: Only lock write operations (default)
  - none: Disable locking
- locktimeout: Time to wait for getting a lock (s/m/h suffix)
  (defaults to 15m)

These options can also be set in ansible.cfg, e.g.:

    [passwordstore_lookup]
    lock=readwrite
    locktimeout=30s

Also, add a note about modifying gpg-agent.conf.

* Tidy up locking config

There is no reason why lock configuration should be part of self.paramvals.
Now locking and its configuration happen all in one place.

* Change timeout description wording to the suggested value.

* Rearrange plugin setup, apply PR feedback
2022-02-21 21:14:17 +01:00
..
fragments passwordstore: Add configurable locking (#4194) 2022-02-21 21:14:17 +01:00
.gitignore Add extra sanity tests and changelog config. (#352) 2020-05-18 19:36:35 +02:00
changelog.yaml Make main ready for 4.1.0. 2021-11-02 06:16:45 +01:00
config.yaml Enable flatmapping for changelog generator. (#551) 2020-06-21 17:00:49 +02:00