6bd07d33cb
Phase 1 of moving the secret store to OpenBao. Nothing is cut over: TG_SECRETS_BACKEND defaults to sops for all three environments, so SOPS remains authoritative until an environment is flipped in a reviewed PR. The reason for the migration is one specific failure class. infra/CLAUDE.md requires that vps1 never hold prod credentials, but that rule is currently enforced by a caller-side shell flag (THERMOGRAPH_SECRETS_SKIP_COMMON) at three call sites. A fourth call site, or one by-hand render, writes both S3 keypairs, the VAPID private key, REGISTRY_TOKEN and the IndexNow/metrics tokens onto the Forgejo CI-runner box and exits 0. policies/tg-host-dev.hcl makes that a 403 instead: dev's identity cannot read the common path at all. Shape: - vps2 only, native systemd (not a container: a Swarm service is circular, and a plain docker run is one `prune -a` from gone), raft storage (2.6.0 deprecated the file backend), static auto-unseal so a reboot cannot block deploys, mesh-only self-signed TLS (not ACME — that would put DNS in the boot chain of the secret store). - AppRole per environment, CIDR-bound, 5-minute tokens. Each environment's secret-id is owned by its own deploy user, which is a boundary that does not exist today since prod and beta both reach the same root-owned age key. - Render still produces the same raw unquoted dotenv: Centralis compares /etc/thermograph.env textually and the Swarm entrypoint parses it by line. The backend dispatch in render-secrets.sh returns early rather than refactoring the shared write path, so the SOPS path stays byte-identical. Verified by rendering dev (12 keys) and prod (32 keys) through it, matching the live hosts. The duplicated write path is noted for consolidation once prod has been on OpenBao for a release cycle. The OpenBao renderer rejects values containing a newline or a shell metacharacter. /etc/thermograph.env is sourced by bash in six places, so such a value is a command-execution path on the deploy host; the SOPS path has always had this hazard and avoids it only because every current value happens to be alphanumeric. Also records that the age keypair is NOT retired by this migration: it is the backup encryption key for every off-box dump (ops-cron.yml:142,197, 30-day retention), so deleting it with the vault files would silently destroy a month of database recoverability. verify-parity.sh is the cutover gate — it renders both backends and diffs them, reporting key names and counts only, never values.
50 lines
2 KiB
Desktop File
50 lines
2 KiB
Desktop File
# OpenBao, as a native systemd service on vps2. Install to
|
|
# /etc/systemd/system/openbao.service.
|
|
#
|
|
# Native, not containerised, on purpose — see the header of config/openbao.hcl. The
|
|
# whole point is that this unit's only dependency is the local disk: not the Docker
|
|
# daemon that deploys restart, not the Swarm it would otherwise be deployed by, not
|
|
# Caddy/ACME for its certificate, and not TimescaleDB.
|
|
#
|
|
# Note there is currently NO systemd unit of any kind loaded on either host for
|
|
# Thermograph (infra/deploy/thermograph.service exists in the repo but is not
|
|
# installed), so this is the first. That is deliberate: it is the one component that
|
|
# must survive the container layer being broken.
|
|
|
|
[Unit]
|
|
Description=OpenBao secret store
|
|
Documentation=https://openbao.org/docs/
|
|
# network-online rather than plain network: the mesh listener binds 10.10.0.1, and
|
|
# binding a WireGuard address before the interface is up fails the unit outright.
|
|
After=network-online.target
|
|
Wants=network-online.target
|
|
# Explicitly NOT After=docker.service. Adding it would recreate the dependency this
|
|
# design exists to avoid.
|
|
ConditionFileNotEmpty=/etc/openbao/config.hcl
|
|
|
|
[Service]
|
|
User=openbao
|
|
Group=openbao
|
|
ExecStart=/usr/local/bin/bao server -config=/etc/openbao/config.hcl
|
|
ExecReload=/bin/kill --signal HUP $MAINPID
|
|
KillSignal=SIGINT
|
|
|
|
# Restart always, which together with the static seal is what makes a host reboot
|
|
# self-healing. This pair is the reason deploys are not blocked by a reboot.
|
|
Restart=always
|
|
RestartSec=5
|
|
|
|
# mlock is disabled in the config (disable_mlock = true), so no IPC_LOCK capability
|
|
# is needed. If mlock is ever enabled, add: AmbientCapabilities=CAP_IPC_LOCK
|
|
NoNewPrivileges=yes
|
|
PrivateTmp=yes
|
|
ProtectSystem=full
|
|
ProtectHome=yes
|
|
# The three paths the service legitimately writes.
|
|
ReadWritePaths=/var/lib/openbao /var/log/openbao
|
|
# Raft + audit both do a lot of small writes; the default is too low for a store.
|
|
LimitNOFILE=65536
|
|
LimitCORE=0
|
|
|
|
[Install]
|
|
WantedBy=multi-user.target
|