7d09776742
swarm-bao-grafana-controller-token, on the host that runs Grafana, logs in to Grafana's API over its socket as the built-in admin (the password swarm-bao-grafana-admin minted, #5138) and keeps a `swarm-controller` service account that is an enabled Viewer. It mints a token for that account and writes it to bao at swarm/controller/swarm-controller/grafana/token under Grafana's leaf. A ten-minute timer runs it again. The unit keeps a stored token Grafana accepts. If Grafana refuses the stored token with 401, or bao holds none, the unit deletes every token of the account and mints a new one. Grafana's grant gains create/read/update on that leaf, and the controller's gains read. swarm-controller serves GET /api/alerts from Grafana's /api/prometheus/grafana/api/v1/alerts. It reads the token from bao, keeps it in memory, and re-reads bao once on a 401. The HTTP client has 5s connect and 15s request timeouts. Any failure is a 503 that names its cause. swarm-ui gets an /alerts page listing them, built the same way as the hives page. This is option (c) on #5129, the operator's choice.
110 lines
4.3 KiB
Nix
110 lines
4.3 KiB
Nix
# Glue: where the store and one of its readers share a host, the reader waits
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# for the unit that writes the cert-auth role it logs in with, and for any
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# other policy unit whose rules it relies on.
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#
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# ONE PAIRING PER FILE — the store's policy units ← the readers that rely
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# on them, and nothing else. Deleting this leaves every reader as it is on a
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# host whose store is remote: it may log in before its role exists, and its own
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# retries are what carry it past that.
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#
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# ⚠️ Gated on BOTH the store and that reader being here. Off the store's host
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# there is no local policy unit to order against. On the store's host without
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# the reader, setting `systemd.services.<reader>.after` would define a unit
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# with no ExecStart, so each gate below restates the one the reader's own
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# module puts on it. A reader whose gate changes must change here too.
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#
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# Ordering, never a requirement: a policy unit that failed still counts as
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# done, and the reader's own retries carry it past that. `wants` as well as
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# `after`, so a reader started on its own pulls its policy unit into the same
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# transaction.
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{
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lib,
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config,
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...
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}:
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let
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hyperhiveCfg = config.services.hyperhive;
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deployCfg = hyperhiveCfg.deploy;
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baoDeploy = deployCfg.bao;
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havePair = cert: key: cert != null && key != null;
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# Reader unit → the gate its own module defines it under.
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readersHere = {
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# ./glue-queue-agent-credential.nix
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swarm-bao-queue-agent =
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deployCfg.hive-controller.enable
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&& havePair baoDeploy.queueAgentClientCertFile baoDeploy.queueAgentClientKeyFile;
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# ./swarm-grafana.nix
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swarm-bao-grafana-oidc = deployCfg.grafana.enable;
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# ./swarm-otel.nix
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swarm-bao-otel-oidc =
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deployCfg.swarm-otel.enable
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&& havePair baoDeploy.otelOidcClientCertFile baoDeploy.otelOidcClientKeyFile;
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# ./swarm-bao.nix: its block is gated on the store, which `orderAfterPolicies`
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# already checks.
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swarm-bao-forwarder-oidc = true;
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# ./swarm-nats.nix: the queue's TLS leaf, not a secret, but the same wait.
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swarm-bao-nats-tls = deployCfg.nats.enable;
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# ./swarm-ci-runner.nix
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swarm-bao-ci-runner = deployCfg.ci-runner.enable;
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# ./hive-forge/default.nix
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swarm-bao-forge-publisher = deployCfg.forgejo.enable;
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};
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# Readers that log in under another unit's principal: reader unit → the
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# gate its own module defines it under, and the policy units it waits for.
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readersOfOtherPolicy = {
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# ./swarm-nats.nix, under the queue responder's leaf. Also after the
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# publisher's policy, which denies the publisher the callout seeds' paths:
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# until it is written the publisher may create them, and this unit keeps
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# a seed it finds there.
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swarm-bao-nats-callout-xkey = {
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here = deployCfg.nats.enable;
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policies = [
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"swarm-bao-nats-auth-policy"
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"swarm-bao-secret-publisher-policy"
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];
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};
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# ./swarm-grafana.nix, under Grafana's leaf, which may create the admin
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# password, the metrics bearer and the controller's Grafana token only
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# once that policy is written.
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swarm-bao-grafana-admin = {
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here = deployCfg.grafana.enable;
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policies = [ "swarm-bao-grafana-oidc-policy" ];
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};
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swarm-bao-grafana-metrics-bearer = {
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here = deployCfg.grafana.enable;
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policies = [ "swarm-bao-grafana-oidc-policy" ];
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};
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swarm-bao-grafana-controller-token = {
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here = deployCfg.grafana.enable;
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policies = [ "swarm-bao-grafana-oidc-policy" ];
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};
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# ./hive-matrix.nix, under matrix-ctl's leaf.
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swarm-bao-matrix-oidc = {
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here = deployCfg.matrix.enable;
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policies = [ "swarm-bao-matrix-ctl-policy" ];
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};
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# ./hive-forge/default.nix, under the forge publisher's leaf.
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swarm-bao-forge-oidc = {
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here = deployCfg.forgejo.enable;
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policies = [ "swarm-bao-forge-publisher-policy" ];
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};
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};
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orderAfterPolicies =
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reader: here: policies:
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lib.mkIf (baoDeploy.enable && here) {
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systemd.services.${reader} = {
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after = map (p: "${p}.service") policies;
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wants = map (p: "${p}.service") policies;
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};
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};
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in
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{
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config = lib.mkMerge (
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lib.mapAttrsToList (reader: here: orderAfterPolicies reader here [ "${reader}-policy" ]) readersHere
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++ lib.mapAttrsToList (reader: r: orderAfterPolicies reader r.here r.policies) readersOfOtherPolicy
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);
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}
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