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swarm-controller reads its forge token from the store, not a host file

The controller's forge token never entered bao: the forge minted it in its
container, hive-forge-swarm-controller-token copied it to a host file, and the
controller LoadCredential'ed that file. forgeTokenFile defaulted to that path
only where the forge ran, so a controller on any other host had no forge
access unless an operator copied the file by hand.

Now the forge's host publishes it and the controller reads it:

- swarm-bao-forge-publisher (replaces hive-forge-swarm-controller-token)
  waits for the in-container token, logs in with its own forge-publisher leaf
  and writes it to swarm/controller/swarm-controller/forge/token. It runs on
  every forge container start, the old unit's trigger.
- New principal swarm-forge-publisher: leaf minted by glue-bao-tls.nix,
  policy create/update on that one path, written by
  swarm-bao-forge-publisher-policy, CN reserved as a hive name.
- The controller policy gains read on that path. swarm-controller reads it
  at start under its own certificate with the OIDC secret's retry, and runs
  without forge access if it still cannot.
- forgeTokenFile, its LoadCredential and the forgeEnv gate are gone;
  SWARM_CONTROLLER_FORGE_URL is always set. hostSwarmControllerTokenFile is
  removed, and a tmpfiles rule deletes the old host copy on the forge host.

The in-container file stays: the mint unit's only-once guard reads it, and
it is the publisher's source.

Refs #4998
This commit is contained in:
atlas 2026-10-08 13:23:17 +02:00
commit 121c4678aa
18 changed files with 580 additions and 277 deletions

View file

@ -107,6 +107,8 @@ in
forwarderOidcClientKeyFile = lib.mkDefault "${pkiDir}/forwarder-oidc-key.pem";
ciRunnerClientCertFile = lib.mkDefault "${pkiDir}/ci-runner.pem";
ciRunnerClientKeyFile = lib.mkDefault "${pkiDir}/ci-runner-key.pem";
forgePublisherClientCertFile = lib.mkDefault "${pkiDir}/forge-publisher.pem";
forgePublisherClientKeyFile = lib.mkDefault "${pkiDir}/forge-publisher-key.pem";
servicesIssuerClientCertFile = lib.mkDefault "${pkiDir}/services-issuer.pem";
servicesIssuerClientKeyFile = lib.mkDefault "${pkiDir}/services-issuer-key.pem";
@ -266,6 +268,12 @@ in
[ -s ${pkiDir}/ci-runner.pem ] || ${signLeaf} ${pkiDir} ci-runner \
${lib.escapeShellArg deployCfg.bao.ciRunnerCommonName} "" clientAuth
# The forge's token publisher. Minted here for the matrix-ctl leaf's
# reason: the forge is a swarm singleton, so on a forge host without the
# store this is the file an operator copies.
[ -s ${pkiDir}/forge-publisher.pem ] || ${signLeaf} ${pkiDir} forge-publisher \
${lib.escapeShellArg deployCfg.bao.forgePublisherCommonName} "" clientAuth
${lib.optionalString deployCfg.hive-controller.enable ''
# This hive's gateway-leaf identity, which opens
# `pki/issue/<hiveLeafPkiRolePrefix>-<hive>` and nothing else. Its