address roberth comments
SEE https://git.fediversity.eu/taeer/simple-nixos-fediverse/compare/main...roberth:review
This commit is contained in:
Taeer Bar-Yam
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@ -2,7 +2,7 @@
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This repo is, for now, an attempt to familiarize myself with NixOS options for Fediverse applications, and build up a configuration layer that will set most of the relevant options for you (in a semi-opinionated way) given some high-level configuration. The goal is something in the same vein as [nixos-mailserver](https://gitlab.com/simple-nixos-mailserver/nixos-mailserver) but for fediversity.
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Eventually, this will be tailored to high-throughput multi-machine setups. For now, it's just a small configuration to run in VMs.
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Eventually, this will be tailored to high-throughput multi-machine setups. For now, it's just a small set of configurations to run in VMs.
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## Running the VMs
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@ -1,4 +1,5 @@
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{ pkgs, ... }: {
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# customize nixos-rebuild build-vm to be a bit more convenient
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virtualisation.vmVariant = {
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# let us log in
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users.mutableUsers = false;
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102
garage.nix
102
garage.nix
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@ -7,12 +7,54 @@ let
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};
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in
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# TODO: expand to a multi-machine setup
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{ config, lib, pkgs, ... }: {
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{ config, lib, pkgs, ... }:
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let
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inherit (lib) types mkOption mkEnableOption optionalString concatStringsSep;
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inherit (lib.strings) escapeShellArg;
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cfg = config.services.garage;
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concatMapAttrs = scriptFn: attrset: concatStringsSep "\n" (lib.mapAttrsToList scriptFn attrset);
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ensureBucketScriptFn = bucket: { website, aliases, corsRules }:
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let
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bucketArg = escapeShellArg bucket;
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corsRulesJSON = escapeShellArg (builtins.toJSON {
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CORSRules = [{
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AllowedHeaders = corsRules.allowedHeaders;
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AllowedMethods = corsRules.allowedMethods;
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AllowedOrigins = corsRules.allowedOrigins;
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}];
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});
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in ''
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# garage bucket info tells us if the bucket already exists
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garage bucket info ${bucketArg} || garage bucket create ${bucketArg}
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# TODO: should this --deny the website if `website` is false?
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${optionalString website ''
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garage bucket website --allow ${bucketArg}
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''}
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${concatStringsSep "\n" (map (alias: ''
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garage bucket alias ${bucketArg} ${escapeShellArg alias}
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'') aliases)}
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${optionalString corsRules.enable ''
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garage bucket allow --read --write --owner ${bucketArg} --key tmp
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aws --endpoint http://s3.garage.localhost:3900 s3api put-bucket-cors --bucket ${bucketArg} --cors-configuration ${corsRulesJSON}
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garage bucket deny --read --write --owner ${bucketArg} --key tmp
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''}
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'';
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ensureBucketsScript = concatMapAttrs ensureBucketScriptFn cfg.ensureBuckets;
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ensureAccessScriptFn = key: bucket: { read, write, owner }: ''
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garage bucket allow ${optionalString read "--read"} ${optionalString write "--write"} ${optionalString owner "--owner"} \
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${escapeShellArg bucket} --key ${escapeShellArg key}
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'';
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ensureKeyScriptFn = key: {id, secret, ensureAccess}: ''
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garage key import --yes -n ${escapeShellArg key} ${escapeShellArg id} ${escapeShellArg secret}
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${concatMapAttrs (ensureAccessScriptFn key) ensureAccess}
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'';
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ensureKeysScript = concatMapAttrs ensureKeyScriptFn cfg.ensureKeys;
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in {
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# add in options to ensure creation of buckets and keys
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options =
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let
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inherit (lib) types mkOption mkEnableOption;
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in {
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options = {
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services.garage = {
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ensureBuckets = mkOption {
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type = types.attrsOf (types.submodule {
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@ -55,6 +97,7 @@ in
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type = types.str;
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};
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# TODO: assert at least one of these is true
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# NOTE: this currently needs to be done at the top level module
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ensureAccess = mkOption {
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type = types.attrsOf (types.submodule {
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options = {
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@ -122,7 +165,7 @@ in
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systemd.services.ensure-garage = {
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after = [ "garage.service" ];
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wantedBy = [ "garage.service" ];
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path = [ config.services.garage.package pkgs.perl pkgs.awscli ];
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path = [ cfg.package pkgs.perl pkgs.awscli ];
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script = ''
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set -xeuo pipefail
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# give garage time to start up
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@ -144,50 +187,11 @@ in
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export AWS_ACCESS_KEY_ID=${snakeoil_key.id};
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export AWS_SECRET_ACCESS_KEY=${snakeoil_key.secret};
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${
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lib.concatStringsSep "\n" (lib.mapAttrsToList (bucket: { website, aliases, corsRules }: ''
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# garage bucket info tells us if the bucket already exists
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garage bucket info ${bucket} || garage bucket create ${bucket}
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${ensureBucketsScript}
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${ensureKeysScript}
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# TODO: should this --deny the website if `website` is false?
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${lib.optionalString website ''
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garage bucket website --allow ${bucket}
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''}
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${lib.concatStringsSep "\n" (map (alias: ''
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garage bucket alias ${bucket} ${alias}
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'') aliases)}
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${lib.optionalString corsRules.enable ''
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# TODO: can i turn this whole thing into one builtins.toJSON?
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export CORS=${lib.concatStrings [
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"'"
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''{"CORSRules":[{''
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''"AllowedHeaders":${builtins.toJSON corsRules.allowedHeaders},''
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''"AllowedMethods":${builtins.toJSON corsRules.allowedMethods},''
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''"AllowedOrigins":${builtins.toJSON corsRules.allowedOrigins}''
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''}]}''
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"'"
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]}
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garage bucket allow --read --write --owner ${bucket} --key tmp
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aws --endpoint http://s3.garage.localhost:3900 s3api put-bucket-cors --bucket ${bucket} --cors-configuration $CORS
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garage bucket deny --read --write --owner ${bucket} --key tmp
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''}
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'') config.services.garage.ensureBuckets)
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}
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${
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lib.concatStringsSep "\n" (lib.mapAttrsToList (key: {id, secret, ensureAccess}: ''
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garage key import --yes -n ${key} ${id} ${secret}
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${
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lib.concatStringsSep "\n" (lib.mapAttrsToList (bucket: { read, write, owner }: ''
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garage bucket allow ${lib.optionalString read "--read"} ${lib.optionalString write "--write"} ${lib.optionalString owner "--owner"} ${bucket} --key ${key}
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'') ensureAccess)
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}
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'') config.services.garage.ensureKeys)
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}
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garage key delete ${snakeoil_key.id} --yes
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# garage doesn't like deleting keys that once existed
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# garage key delete ${snakeoil_key.id} --yes
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'';
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};
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};
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49
mastodon.nix
49
mastodon.nix
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@ -99,11 +99,7 @@ in
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# from the documentation: recommended is the amount of your CPU cores minus one.
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# but it also must be a positive integer
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streamingProcesses = let
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ncores = config.virtualisation.cores;
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max = x: y: if x > y then x else y;
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in
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max 1 (ncores - 1);
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streamingProcesses = lib.max 1 (config.virtualisation.cores - 1);
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};
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security.acme = {
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@ -159,22 +155,35 @@ in
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# ensureDatabases = [ "mastodon_development_test" "mastodon_test" ];
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};
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# run rails db:seed so that mastodon sets up the databases for us
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# Currently, nixos seems to be able to create a single database per
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# postgres user. This works for the production version of mastodon, which
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# is what's packaged in nixpkgs. For development, we need two databases,
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# mastodon_development and mastodon_test. This used to be possible with
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# ensurePermissions, but that's broken and has been removed. Here I copy
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# the mastodon-init-db script from upstream nixpkgs, but add the single
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# line `rails db:setup`, which asks mastodon to create the postgres
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# databases for us.
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# FIXME: the commented out lines were breaking things, but presumably they're necessary for something.
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# TODO: see if we can fix the upstream ensurePermissions stuff. See above for what that config would look like.
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systemd.services.mastodon-init-db.script = lib.mkForce ''
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if [ `psql -c \
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"select count(*) from pg_class c \
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join pg_namespace s on s.oid = c.relnamespace \
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where s.nspname not in ('pg_catalog', 'pg_toast', 'information_schema') \
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and s.nspname not like 'pg_temp%';" | sed -n 3p` -eq 0 ]; then
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echo "Seeding database"
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rails db:setup
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# SAFETY_ASSURED=1 rails db:schema:load
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rails db:seed
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else
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echo "Migrating database (this might be a noop)"
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# TODO: this breaks for some reason
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# rails db:migrate
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fi
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result="$(psql -t --csv -c \
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"select count(*) from pg_class c \
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join pg_namespace s on s.oid = c.relnamespace \
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where s.nspname not in ('pg_catalog', 'pg_toast', 'information_schema') \
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and s.nspname not like 'pg_temp%';")" || error_code=$?
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if [ "''${error_code:-0}" -ne 0 ]; then
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echo "Failure checking if database is seeded. psql gave exit code $error_code"
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exit "$error_code"
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fi
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if [ "$result" -eq 0 ]; then
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echo "Seeding database"
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rails db:setup
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# SAFETY_ASSURED=1 rails db:schema:load
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rails db:seed
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else
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# echo "Migrating database (this might be a noop)"
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# rails db:migrate
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fi
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'';
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virtualisation.forwardPorts = [
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{
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