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swarm UI: an alerts page, read by the controller with a Viewer Grafana token from bao

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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.
This commit is contained in:
atlas 2026-10-15 12:26:06 +02:00 • committed by mara
commit 7d09776742
23 changed files with 888 additions and 37 deletions
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7
nix/host-modules/glue-bao-readers-policy-order.nix
View file

@ -67,7 +67,8 @@ let
];
};
# ./swarm-grafana.nix, under Grafana's leaf, which may create the admin
# password and the metrics bearer only once that policy is written.
# password, the metrics bearer and the controller's Grafana token only
# once that policy is written.
swarm-bao-grafana-admin = {
here = deployCfg.grafana.enable;
policies = [ "swarm-bao-grafana-oidc-policy" ];
@ -76,6 +77,10 @@ let
here = deployCfg.grafana.enable;
policies = [ "swarm-bao-grafana-oidc-policy" ];
};
swarm-bao-grafana-controller-token = {
here = deployCfg.grafana.enable;
policies = [ "swarm-bao-grafana-oidc-policy" ];
};
# ./hive-matrix.nix, under matrix-ctl's leaf.
swarm-bao-matrix-oidc = {
here = deployCfg.matrix.enable;