infra/terraform/gandi.nix
Pierre Bourdon 8ffb7e51f1
tf/gandi: reduce all TTLs from 1h to 5m
Serving DNS is absurdly cheap (and we don't even do it ourselves right
now), and this makes it easier to iterate on DNS configs.
2024-08-16 08:51:31 +02:00

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{ lib, config, ... }:
let
inherit (lib) mkEnableOption mkIf tf genList;
cfg = config.bagel.gandi;
in
{
options.bagel.gandi = {
enable = mkEnableOption "the Gandi DNS configuration";
};
config = mkIf cfg.enable {
terraform.required_providers.gandi = {
version = "~> 2.3.0";
source = "go-gandi/gandi";
};
resource.secret_resource.gandi_pat.lifecycle.prevent_destroy = true;
provider.gandi = {
personal_access_token = tf.ref "resource.secret_resource.gandi_pat.value";
};
resource.gandi_livedns_domain.forkos_org = {
name = "forkos.org";
};
resource.gandi_livedns_record = let
record = name: ttl: type: values: {
inherit name ttl type values;
};
proxyRecords = name: ttl: type: values: [
# kurisu.lahfa.xyz running a sniproxy:
(record name ttl "A" ["163.172.69.160"])
(record name ttl type values)
];
# Creates a extra *.p record pointing to the sniproxy
dualProxyRecords = name: ttl: type: values: lib.flatten [
(record name ttl type values)
(proxyRecords "${name}.p" ttl type values)
];
# TODO: make less fragile and have actual unique and stable names
canonicalName = record: let
name = builtins.replaceStrings ["." "@"] ["_" "_root_"] record.name;
in
"forkos_org_${record.type}_${name}";
forkosRecords = records:
builtins.listToAttrs (map (record: {
name = canonicalName record;
value = record // {
zone = tf.ref "resource.gandi_livedns_domain.forkos_org.id";
};
}) (lib.flatten records));
in forkosRecords ([
# (record "@" 300 "A" ["163.172.69.160"])
(record "@" 300 "AAAA" ["2001:bc8:38ee:100:1000::20"])
(dualProxyRecords "bagel-box.infra" 300 "AAAA" ["2001:bc8:38ee:100:100::1"])
(dualProxyRecords "gerrit01.infra" 300 "AAAA" ["2001:bc8:38ee:100:1000::10"])
(dualProxyRecords "meta01.infra" 300 "AAAA" ["2001:bc8:38ee:100:1000::20"])
(dualProxyRecords "fodwatch.infra" 300 "AAAA" ["2001:bc8:38ee:100:1000::30"])
# git.infra.forkos.org exposes opensshd
(dualProxyRecords "git.infra" 300 "AAAA" ["2001:bc8:38ee:100:1000::41"])
# git.p.forkos.org exposes forgejo ssh server.
(proxyRecords "git.p" 300 "AAAA" ["2001:bc8:38ee:100:1000::40"])
(dualProxyRecords "buildbot.infra" 300 "AAAA" ["2001:bc8:38ee:100:1000::50"])
(dualProxyRecords "public01.infra" 300 "AAAA" ["2001:bc8:38ee:100:1000::60"])
(record "cl" 300 "CNAME" ["gerrit01.infra.p"])
(record "fodwatch" 300 "CNAME" ["fodwatch.infra.p"])
# git.p.forkos.org is the proxy variant of the Forgejo server.
(record "git" 300 "CNAME" ["git.p"])
(record "netbox" 300 "CNAME" ["meta01.infra.p"])
(record "amqp" 300 "CNAME" ["bagel-box.infra.p"])
(record "grafana" 300 "CNAME" ["meta01.infra.p"])
(record "hydra" 300 "CNAME" ["build-coord.wob01.infra.p"])
(record "loki" 300 "CNAME" ["meta01.infra.p"])
(record "mimir" 300 "CNAME" ["meta01.infra.p"])
(record "matrix" 300 "CNAME" ["meta01.infra.p"])
(record "alerts" 300 "CNAME" ["meta01.infra.p"])
(record "buildbot" 300 "CNAME" ["buildbot.infra.p"])
(record "b" 300 "CNAME" ["public01.infra.p"])
(record "postgres" 300 "CNAME" ["bagel-box.infra.p"])
# S3 in delroth's basement
(record "cache" 300 "CNAME" ["smol.delroth.net."])
(record "vpn-gw.wob01.infra" 300 "AAAA" [ "2a01:584:11::2" ])
(dualProxyRecords "build-coord.wob01.infra" 300 "AAAA" [ "2a01:584:11::1:11" ])
# TODO: do not hardcode, just reuse the Colmena hive module outputs to generate all the required details.
] ++ map (index: record "builder-${toString index}.wob01.infra" 300 "AAAA" [ "2a01:584:11::1:${toString index}" ]) (genList lib.id 11));
};
}