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Diffstat (limited to 'nixos/modules/services/web-apps/akkoma.xml')
| -rw-r--r-- | nixos/modules/services/web-apps/akkoma.xml | 398 |
1 files changed, 0 insertions, 398 deletions
diff --git a/nixos/modules/services/web-apps/akkoma.xml b/nixos/modules/services/web-apps/akkoma.xml deleted file mode 100644 index 49cbcc911e1d..000000000000 --- a/nixos/modules/services/web-apps/akkoma.xml +++ /dev/null @@ -1,398 +0,0 @@ -<!-- Do not edit this file directly, edit its companion .md instead - and regenerate this file using nixos/doc/manual/md-to-db.sh --> -<chapter xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="module-services-akkoma"> - <title>Akkoma</title> - <para> - <link xlink:href="https://akkoma.dev/">Akkoma</link> is a - lightweight ActivityPub microblogging server forked from Pleroma. - </para> - <section xml:id="modules-services-akkoma-service-configuration"> - <title>Service configuration</title> - <para> - The Elixir configuration file required by Akkoma is generated - automatically from - <link xlink:href="options.html#opt-services.akkoma.config"><option>services.akkoma.config</option></link>. - Secrets must be included from external files outside of the Nix - store by setting the configuration option to an attribute set - containing the attribute <option>_secret</option> – a string - pointing to the file containing the actual value of the option. - </para> - <para> - For the mandatory configuration settings these secrets will be - generated automatically if the referenced file does not exist - during startup, unless disabled through - <link xlink:href="options.html#opt-services.akkoma.initSecrets"><option>services.akkoma.initSecrets</option></link>. - </para> - <para> - The following configuration binds Akkoma to the Unix socket - <literal>/run/akkoma/socket</literal>, expecting to be run behind - a HTTP proxy on <literal>fediverse.example.com</literal>. - </para> - <programlisting language="nix"> -services.akkoma.enable = true; -services.akkoma.config = { - ":pleroma" = { - ":instance" = { - name = "My Akkoma instance"; - description = "More detailed description"; - email = "admin@example.com"; - registration_open = false; - }; - - "Pleroma.Web.Endpoint" = { - url.host = "fediverse.example.com"; - }; - }; -}; -</programlisting> - <para> - Please refer to the - <link xlink:href="https://docs.akkoma.dev/stable/configuration/cheatsheet/">configuration - cheat sheet</link> for additional configuration options. - </para> - </section> - <section xml:id="modules-services-akkoma-user-management"> - <title>User management</title> - <para> - After the Akkoma service is running, the administration utility - can be used to - <link xlink:href="https://docs.akkoma.dev/stable/administration/CLI_tasks/user/">manage - users</link>. In particular an administrative user can be created - with - </para> - <programlisting> -$ pleroma_ctl user new <nickname> <email> --admin --moderator --password <password> -</programlisting> - </section> - <section xml:id="modules-services-akkoma-proxy-configuration"> - <title>Proxy configuration</title> - <para> - Although it is possible to expose Akkoma directly, it is common - practice to operate it behind an HTTP reverse proxy such as nginx. - </para> - <programlisting language="nix"> -services.akkoma.nginx = { - enableACME = true; - forceSSL = true; -}; - -services.nginx = { - enable = true; - - clientMaxBodySize = "16m"; - recommendedTlsSettings = true; - recommendedOptimisation = true; - recommendedGzipSettings = true; -}; -</programlisting> - <para> - Please refer to <xref linkend="module-security-acme" /> for - details on how to provision an SSL/TLS certificate. - </para> - <section xml:id="modules-services-akkoma-media-proxy"> - <title>Media proxy</title> - <para> - Without the media proxy function, Akkoma does not store any - remote media like pictures or video locally, and clients have to - fetch them directly from the source server. - </para> - <programlisting language="nix"> -# Enable nginx slice module distributed with Tengine -services.nginx.package = pkgs.tengine; - -# Enable media proxy -services.akkoma.config.":pleroma".":media_proxy" = { - enabled = true; - proxy_opts.redirect_on_failure = true; -}; - -# Adjust the persistent cache size as needed: -# Assuming an average object size of 128 KiB, around 1 MiB -# of memory is required for the key zone per GiB of cache. -# Ensure that the cache directory exists and is writable by nginx. -services.nginx.commonHttpConfig = '' - proxy_cache_path /var/cache/nginx/cache/akkoma-media-cache - levels= keys_zone=akkoma_media_cache:16m max_size=16g - inactive=1y use_temp_path=off; -''; - -services.akkoma.nginx = { - locations."/proxy" = { - proxyPass = "http://unix:/run/akkoma/socket"; - - extraConfig = '' - proxy_cache akkoma_media_cache; - - # Cache objects in slices of 1 MiB - slice 1m; - proxy_cache_key $host$uri$is_args$args$slice_range; - proxy_set_header Range $slice_range; - - # Decouple proxy and upstream responses - proxy_buffering on; - proxy_cache_lock on; - proxy_ignore_client_abort on; - - # Default cache times for various responses - proxy_cache_valid 200 1y; - proxy_cache_valid 206 301 304 1h; - - # Allow serving of stale items - proxy_cache_use_stale error timeout invalid_header updating; - ''; - }; -}; -</programlisting> - <section xml:id="modules-services-akkoma-prefetch-remote-media"> - <title>Prefetch remote media</title> - <para> - The following example enables the - <literal>MediaProxyWarmingPolicy</literal> MRF policy which - automatically fetches all media associated with a post through - the media proxy, as soon as the post is received by the - instance. - </para> - <programlisting language="nix"> -services.akkoma.config.":pleroma".":mrf".policies = - map (pkgs.formats.elixirConf { }).lib.mkRaw [ - "Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy" -]; -</programlisting> - </section> - <section xml:id="modules-services-akkoma-media-previews"> - <title>Media previews</title> - <para> - Akkoma can generate previews for media. - </para> - <programlisting language="nix"> -services.akkoma.config.":pleroma".":media_preview_proxy" = { - enabled = true; - thumbnail_max_width = 1920; - thumbnail_max_height = 1080; -}; -</programlisting> - </section> - </section> - </section> - <section xml:id="modules-services-akkoma-frontend-management"> - <title>Frontend management</title> - <para> - Akkoma will be deployed with the <literal>pleroma-fe</literal> and - <literal>admin-fe</literal> frontends by default. These can be - modified by setting - <link xlink:href="options.html#opt-services.akkoma.frontends"><option>services.akkoma.frontends</option></link>. - </para> - <para> - The following example overrides the primary frontend’s default - configuration using a custom derivation. - </para> - <programlisting language="nix"> -services.akkoma.frontends.primary.package = pkgs.runCommand "pleroma-fe" { - config = builtins.toJSON { - expertLevel = 1; - collapseMessageWithSubject = false; - stopGifs = false; - replyVisibility = "following"; - webPushHideIfCW = true; - hideScopeNotice = true; - renderMisskeyMarkdown = false; - hideSiteFavicon = true; - postContentType = "text/markdown"; - showNavShortcuts = false; - }; - nativeBuildInputs = with pkgs; [ jq xorg.lndir ]; - passAsFile = [ "config" ]; -} '' - mkdir $out - lndir ${pkgs.akkoma-frontends.pleroma-fe} $out - - rm $out/static/config.json - jq -s add ${pkgs.akkoma-frontends.pleroma-fe}/static/config.json ${config} \ - >$out/static/config.json -''; -</programlisting> - </section> - <section xml:id="modules-services-akkoma-federation-policies"> - <title>Federation policies</title> - <para> - Akkoma comes with a number of modules to police federation with - other ActivityPub instances. The most valuable for typical users - is the - <link xlink:href="https://docs.akkoma.dev/stable/configuration/cheatsheet/#mrf_simple"><literal>:mrf_simple</literal></link> - module which allows limiting federation based on instance - hostnames. - </para> - <para> - This configuration snippet provides an example on how these can be - used. Choosing an adequate federation policy is not trivial and - entails finding a balance between connectivity to the rest of the - fediverse and providing a pleasant experience to the users of an - instance. - </para> - <programlisting language="nix"> -services.akkoma.config.":pleroma" = with (pkgs.formats.elixirConf { }).lib; { - ":mrf".policies = map mkRaw [ - "Pleroma.Web.ActivityPub.MRF.SimplePolicy" - ]; - - ":mrf_simple" = { - # Tag all media as sensitive - media_nsfw = mkMap { - "nsfw.weird.kinky" = "Untagged NSFW content"; - }; - - # Reject all activities except deletes - reject = mkMap { - "kiwifarms.cc" = "Persistent harassment of users, no moderation"; - }; - - # Force posts to be visible by followers only - followers_only = mkMap { - "beta.birdsite.live" = "Avoid polluting timelines with Twitter posts"; - }; - }; -}; -</programlisting> - </section> - <section xml:id="modules-services-akkoma-upload-filters"> - <title>Upload filters</title> - <para> - This example strips GPS and location metadata from uploads, - deduplicates them and anonymises the the file name. - </para> - <programlisting language="nix"> -services.akkoma.config.":pleroma"."Pleroma.Upload".filters = - map (pkgs.formats.elixirConf { }).lib.mkRaw [ - "Pleroma.Upload.Filter.Exiftool" - "Pleroma.Upload.Filter.Dedupe" - "Pleroma.Upload.Filter.AnonymizeFilename" - ]; -</programlisting> - </section> - <section xml:id="modules-services-akkoma-migration-pleroma"> - <title>Migration from Pleroma</title> - <para> - Pleroma instances can be migrated to Akkoma either by copying the - database and upload data or by pointing Akkoma to the existing - data. The necessary database migrations are run automatically - during startup of the service. - </para> - <para> - The configuration has to be copy‐edited manually. - </para> - <para> - Depending on the size of the database, the initial migration may - take a long time and exceed the startup timeout of the system - manager. To work around this issue one may adjust the startup - timeout - <option>systemd.services.akkoma.serviceConfig.TimeoutStartSec</option> - or simply run the migrations manually: - </para> - <programlisting> -pleroma_ctl migrate -</programlisting> - <section xml:id="modules-services-akkoma-migration-pleroma-copy"> - <title>Copying data</title> - <para> - Copying the Pleroma data instead of re‐using it in place may - permit easier reversion to Pleroma, but allows the two data sets - to diverge. - </para> - <para> - First disable Pleroma and then copy its database and upload - data: - </para> - <programlisting> -# Create a copy of the database -nix-shell -p postgresql --run 'createdb -T pleroma akkoma' - -# Copy upload data -mkdir /var/lib/akkoma -cp -R --reflink=auto /var/lib/pleroma/uploads /var/lib/akkoma/ -</programlisting> - <para> - After the data has been copied, enable the Akkoma service and - verify that the migration has been successful. If no longer - required, the original data may then be deleted: - </para> - <programlisting> -# Delete original database -nix-shell -p postgresql --run 'dropdb pleroma' - -# Delete original Pleroma state -rm -r /var/lib/pleroma -</programlisting> - </section> - <section xml:id="modules-services-akkoma-migration-pleroma-reuse"> - <title>Re‐using data</title> - <para> - To re‐use the Pleroma data in place, disable Pleroma and enable - Akkoma, pointing it to the Pleroma database and upload - directory. - </para> - <programlisting language="nix"> -# Adjust these settings according to the database name and upload directory path used by Pleroma -services.akkoma.config.":pleroma"."Pleroma.Repo".database = "pleroma"; -services.akkoma.config.":pleroma".":instance".upload_dir = "/var/lib/pleroma/uploads"; -</programlisting> - <para> - Please keep in mind that after the Akkoma service has been - started, any migrations applied by Akkoma have to be rolled back - before the database can be used again with Pleroma. This can be - achieved through <literal>pleroma_ctl ecto.rollback</literal>. - Refer to the - <link xlink:href="https://hexdocs.pm/ecto_sql/Mix.Tasks.Ecto.Rollback.html">Ecto - SQL documentation</link> for details. - </para> - </section> - </section> - <section xml:id="modules-services-akkoma-advanced-deployment"> - <title>Advanced deployment options</title> - <section xml:id="modules-services-akkoma-confinement"> - <title>Confinement</title> - <para> - The Akkoma systemd service may be confined to a chroot with - </para> - <programlisting language="nix"> -services.systemd.akkoma.confinement.enable = true; -</programlisting> - <para> - Confinement of services is not generally supported in NixOS and - therefore disabled by default. Depending on the Akkoma - configuration, the default confinement settings may be - insufficient and lead to subtle errors at run time, requiring - adjustment: - </para> - <para> - Use - <link xlink:href="options.html#opt-systemd.services._name_.confinement.packages"><option>services.systemd.akkoma.confinement.packages</option></link> - to make packages available in the chroot. - </para> - <para> - <option>services.systemd.akkoma.serviceConfig.BindPaths</option> - and - <option>services.systemd.akkoma.serviceConfig.BindReadOnlyPaths</option> - permit access to outside paths through bind mounts. Refer to - <link xlink:href="https://www.freedesktop.org/software/systemd/man/systemd.exec.html#BindPaths="><citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry></link> - for details. - </para> - </section> - <section xml:id="modules-services-akkoma-distributed-deployment"> - <title>Distributed deployment</title> - <para> - Being an Elixir application, Akkoma can be deployed in a - distributed fashion. - </para> - <para> - This requires setting - <link xlink:href="options.html#opt-services.akkoma.dist.address"><option>services.akkoma.dist.address</option></link> - and - <link xlink:href="options.html#opt-services.akkoma.dist.cookie"><option>services.akkoma.dist.cookie</option></link>. - The specifics depend strongly on the deployment environment. For - more information please check the relevant - <link xlink:href="https://www.erlang.org/doc/reference_manual/distributed.html">Erlang - documentation</link>. - </para> - </section> - </section> -</chapter> |