Commit Graph

11 Commits

Author SHA1 Message Date
Chris van Dijk
6e3b877dc2 Remove hardcoded command paths in playbook shell usage 2020-05-27 23:14:56 +02:00
Slavi Pantaleev
29526e7bb1 Add support for backing up / importing all Postgres databases/users 2019-10-05 11:42:08 +03:00
Dan Arnfield
3982f114af Fix CONDITIONAL_BARE_VARS deprecation warning in ansible 2.8 2019-05-21 10:25:59 -05:00
Slavi Pantaleev
0be7b25c64 Make (most) containers run with a read-only filesystem 2019-01-29 18:52:02 +02:00
Slavi Pantaleev
9438402f61 Drop capabilities in a few more places
Continuation of 316d653d3e
2019-01-28 11:43:32 +02:00
Slavi Pantaleev
299a8c4c7c Make (most) containers start as non-root
This makes all containers (except mautrix-telegram and
mautrix-whatsapp), start as a non-root user.

We do this, because we don't trust some of the images.
In any case, we'd rather not trust ALL images and avoid giving
`root` access at all. We can't be sure they would drop privileges
or what they might do before they do it.

Because Postfix doesn't support running as non-root,
it had to be replaced by an Exim mail server.

The matrix-nginx-proxy nginx container image is patched up
(by replacing its main configuration) so that it can work as non-root.
It seems like there's no other good image that we can use and that is up-to-date
(https://hub.docker.com/r/nginxinc/nginx-unprivileged is outdated).

Likewise for riot-web (https://hub.docker.com/r/bubuntux/riot-web/),
we patch it up ourselves when starting (replacing the main nginx
configuration).
Ideally, it would be fixed upstream so we can simplify.
2019-01-27 20:25:13 +02:00
Slavi Pantaleev
a4e7ad5566 Use async Ansible task for importing Postgres
A long-running import task may hit the SSH timeout value
and die. Using async is supposed to improve reliability
in such scenarios.
2019-01-21 08:34:49 +02:00
Slavi Pantaleev
0392822aa7 Show Postgres import command and mention manual importing 2019-01-21 08:33:10 +02:00
Slavi Pantaleev
8d186e5194 Fix Postgres import when Postgres had never started
If this is a brand new server and Postgres had never started,
detecting it before we even start it is not possible.

This moves the logic, so that it happens later on, when Postgres
would have had the chance to start and possibly initialize
a new empty database.

Fixes #82 (Github issue)
2019-01-21 07:32:19 +02:00
Slavi Pantaleev
c10182e5a6 Make roles more independent of one another
With this change, the following roles are now only dependent
on the minimal `matrix-base` role:
- `matrix-corporal`
- `matrix-coturn`
- `matrix-mailer`
- `matrix-mxisd`
- `matrix-postgres`
- `matrix-riot-web`
- `matrix-synapse`

The `matrix-nginx-proxy` role still does too much and remains
dependent on the others.

Wiring up the various (now-independent) roles happens
via a glue variables file (`group_vars/matrix-servers`).
It's triggered for all hosts in the `matrix-servers` group.

According to Ansible's rules of priority, we have the following
chain of inclusion/overriding now:
- role defaults (mostly empty or good for independent usage)
- playbook glue variables (`group_vars/matrix-servers`)
- inventory host variables (`inventory/host_vars/matrix.<your-domain>`)

All roles default to enabling their main component
(e.g. `matrix_mxisd_enabled: true`, `matrix_riot_web_enabled: true`).
Reasoning: if a role is included in a playbook (especially separately,
in another playbook), it should "work" by default.

Our playbook disables some of those if they are not generally useful
(e.g. `matrix_corporal_enabled: false`).
2019-01-16 18:05:48 +02:00
Slavi Pantaleev
51312b8250 Split playbook into multiple roles
As suggested in #63 (Github issue), splitting the
playbook's logic into multiple roles will be beneficial for
maintainability.

This patch realizes this split. Still, some components
affect others, so the roles are not really independent of one
another. For example:
- disabling mxisd (`matrix_mxisd_enabled: false`), causes Synapse
and riot-web to reconfigure themselves with other (public)
Identity servers.

- enabling matrix-corporal (`matrix_corporal_enabled: true`) affects
how reverse-proxying (by `matrix-nginx-proxy`) is done, in order to
put matrix-corporal's gateway server in front of Synapse

We may be able to move away from such dependencies in the future,
at the expense of a more complicated manual configuration, but
it's probably not worth sacrificing the convenience we have now.

As part of this work, the way we do "start components" has been
redone now to use a loop, as suggested in #65 (Github issue).
This should make restarting faster and more reliable.
2019-01-12 18:01:10 +02:00