Add OpenBao authenticated readiness verifier

This commit is contained in:
2026-06-01 22:46:14 +02:00
parent f1336d5bcc
commit 5e4040d43d
4 changed files with 290 additions and 1 deletions

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@@ -13,6 +13,7 @@ OPENBAO_CHART_VERSION ?= 0.28.2
OPENBAO_NAMESPACE ?= openbao
OPENBAO_RELEASE ?= openbao
OPENBAO_VALUES ?= helm/openbao-values.yaml
OPENBAO_VERIFY_AUTH_ARGS ?=
##@ CloudNative PG (cnpg) — primary database operator
@@ -121,6 +122,10 @@ openbao-configure-initial: ## Apply first post-unseal audit, auth, mounts, and p
KUBECTL='$(KUBECTL)' OPENBAO_NAMESPACE=$(OPENBAO_NAMESPACE) \
OPENBAO_RELEASE=$(OPENBAO_RELEASE) scripts/openbao-apply-initial-config.sh
openbao-verify-authenticated: ## Run authenticated non-mutating OpenBao audit/auth/mount checks
KUBECTL='$(KUBECTL)' OPENBAO_NAMESPACE=$(OPENBAO_NAMESPACE) \
OPENBAO_RELEASE=$(OPENBAO_RELEASE) scripts/openbao-verify-authenticated.sh $(OPENBAO_VERIFY_AUTH_ARGS)
##@ Backup
backup: ## Backup platform services (PostgreSQL logical dump) — age-encrypted to Nextcloud
@@ -133,4 +138,4 @@ help: ## Show this help
/^[a-zA-Z_-]+:.*?##/ { printf " \033[36m%-22s\033[0m %s\n", $$1, $$2 } \
/^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) }' $(MAKEFILE_LIST)
.PHONY: db-deploy db-status db-shell db-logs apps-pg-deploy apps-pg-status apps-pg-shell apps-pg-logs pg-deploy pg-status pg-pgpool-check valkey-deploy valkey-status openbao-repo openbao-dry-run openbao-deploy openbao-status openbao-verify openbao-verify-post-unseal openbao-configure-initial backup help
.PHONY: db-deploy db-status db-shell db-logs apps-pg-deploy apps-pg-status apps-pg-shell apps-pg-logs pg-deploy pg-status pg-pgpool-check valkey-deploy valkey-status openbao-repo openbao-dry-run openbao-deploy openbao-status openbao-verify openbao-verify-post-unseal openbao-configure-initial openbao-verify-authenticated backup help

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@@ -279,6 +279,33 @@ Before any live application secrets move into OpenBao:
make openbao-verify-post-unseal
```
Authenticated verification, after the KeyCape-backed `platform-admin` path or
another approved operator token is available:
```bash
make openbao-verify-authenticated
```
The target prompts for the token without echoing it, never puts the token on
the command line, and only runs non-mutating checks. It verifies that
`bao audit list` shows `file/`, `bao secrets list` shows `platform/`,
`bao auth list` shows both `kubernetes/` and `keycape/`, and that the file
audit log is non-empty.
If a previous attended OIDC login stored a still-valid token in the pod token
helper, use:
```bash
make openbao-verify-authenticated OPENBAO_VERIFY_AUTH_ARGS=--use-token-helper
```
Current durable audit status: the file audit device writes to the audit PVC,
which is necessary but not enough for production trust. Before application
secrets move into OpenBao, choose and test a durable audit sink beyond that PVC
such as an encrypted platform backup/export path or the future centralized
logging stack. Do not treat non-secret hashes, screenshots, or State Hub notes
as substitutes for retained audit log custody.
Monitoring baseline:
- pod readiness and liveness from Kubernetes probes

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@@ -0,0 +1,246 @@
#!/usr/bin/env bash
set -euo pipefail
OPENBAO_NAMESPACE="${OPENBAO_NAMESPACE:-openbao}"
OPENBAO_RELEASE="${OPENBAO_RELEASE:-openbao}"
KUBECTL="${KUBECTL:-kubectl}"
TOKEN_FILE="${OPENBAO_TOKEN_FILE:-}"
DRY_RUN=0
USE_TOKEN_HELPER=0
usage() {
cat <<'USAGE'
Usage: scripts/openbao-verify-authenticated.sh [--dry-run] [--use-token-helper]
Runs authenticated, non-mutating OpenBao readiness checks:
- audit list includes file/
- secrets list includes platform/
- auth list includes kubernetes/ and keycape/
- audit log exists and is non-empty
The token is read from OPENBAO_TOKEN_FILE or an interactive hidden prompt. The
script does not print, store, or pass the token on the command line.
With --use-token-helper, no token is read by this script. The checks rely on
the OpenBao token helper inside the pod, if a previous attended login stored a
still-valid token there.
USAGE
}
while [ "$#" -gt 0 ]; do
case "$1" in
--dry-run)
DRY_RUN=1
shift
;;
--use-token-helper)
USE_TOKEN_HELPER=1
shift
;;
-h|--help)
usage
exit 0
;;
*)
echo "ERROR: unknown argument: $1" >&2
usage >&2
exit 2
;;
esac
done
pod="${OPENBAO_RELEASE}-0"
FAILURES=0
WARNINGS=0
ok() { printf '[OK] %s\n' "$*"; }
warn() { WARNINGS=$((WARNINGS + 1)); printf '[WARN] %s\n' "$*" >&2; }
fail() { FAILURES=$((FAILURES + 1)); printf '[FAIL] %s\n' "$*" >&2; }
step() { printf '\n==> %s\n' "$*"; }
check_cmd() {
if ! command -v "${KUBECTL%% *}" >/dev/null 2>&1; then
echo "ERROR: kubectl command not found: $KUBECTL" >&2
exit 1
fi
}
run() {
# shellcheck disable=SC2086
$KUBECTL "$@"
}
read_token() {
if [ "$USE_TOKEN_HELPER" -eq 1 ]; then
printf '__USE_TOKEN_HELPER__\n'
return
fi
if [ "$DRY_RUN" -eq 1 ]; then
printf 'dry-run-token\n'
return
fi
if [ -n "$TOKEN_FILE" ]; then
if [ ! -f "$TOKEN_FILE" ]; then
echo "ERROR: OPENBAO_TOKEN_FILE does not exist: $TOKEN_FILE" >&2
exit 1
fi
head -n 1 "$TOKEN_FILE"
return
fi
local token
read -r -s -p "OpenBao token: " token
printf '\n' >&2
printf '%s\n' "$token"
}
remote_bao() {
local token="$1"
shift
if [ "$DRY_RUN" -eq 1 ]; then
case "$*" in
status)
cat <<'STATUS'
Key Value
--- -----
Sealed false
STATUS
;;
"audit list")
cat <<'AUDIT'
Path Type Description
---- ---- -----------
file/ file Default file audit device on the OpenBao audit PVC.
AUDIT
;;
"secrets list")
cat <<'SECRETS'
Path Type
---- ----
cubbyhole/ cubbyhole
identity/ identity
platform/ kv
SECRETS
;;
"auth list")
cat <<'AUTH'
Path Type
---- ----
keycape/ oidc
kubernetes/ kubernetes
token/ token
AUTH
;;
*)
printf 'DRY-RUN: bao %s\n' "$*"
;;
esac
return 0
fi
if [ "$USE_TOKEN_HELPER" -eq 1 ]; then
run exec -n "$OPENBAO_NAMESPACE" "$pod" -- bao "$@"
return $?
fi
printf '%s\n' "$token" | run exec -i -n "$OPENBAO_NAMESPACE" "$pod" -- \
sh -c 'read -r BAO_TOKEN; export BAO_TOKEN; exec bao "$@"' sh "$@"
}
audit_log_bytes() {
if [ "$DRY_RUN" -eq 1 ]; then
printf '1\n'
return 0
fi
run exec -n "$OPENBAO_NAMESPACE" "$pod" -- \
sh -c 'test -s /openbao/audit/openbao-audit.log && wc -c < /openbao/audit/openbao-audit.log' \
2>/dev/null | tr -d '[:space:]'
}
require_pattern() {
local label="$1"
local output="$2"
local pattern="$3"
if printf '%s\n' "$output" | grep -Eq "$pattern"; then
ok "$label"
else
fail "$label"
fi
}
check_cmd
token="$(read_token)"
if [ -z "$token" ]; then
echo "ERROR: empty OpenBao token" >&2
exit 1
fi
before_bytes="$(audit_log_bytes || true)"
before_bytes="${before_bytes:-0}"
step "OpenBao status"
if status_output="$(remote_bao "$token" status 2>&1)"; then
printf '%s\n' "$status_output"
require_pattern "OpenBao is unsealed" "$status_output" '^Sealed[[:space:]]+false$'
else
printf '%s\n' "$status_output" >&2
fail "bao status succeeded"
fi
step "Audit devices"
if audit_output="$(remote_bao "$token" audit list 2>&1)"; then
printf '%s\n' "$audit_output"
require_pattern "file/ audit device is visible" "$audit_output" '(^|[[:space:]])file/'
else
printf '%s\n' "$audit_output" >&2
fail "bao audit list succeeded"
fi
step "Secrets engines"
if secrets_output="$(remote_bao "$token" secrets list 2>&1)"; then
printf '%s\n' "$secrets_output"
require_pattern "platform/ secrets engine is visible" "$secrets_output" '(^|[[:space:]])platform/'
else
printf '%s\n' "$secrets_output" >&2
fail "bao secrets list succeeded"
fi
step "Auth methods"
if auth_output="$(remote_bao "$token" auth list 2>&1)"; then
printf '%s\n' "$auth_output"
require_pattern "kubernetes/ auth method is visible" "$auth_output" '(^|[[:space:]])kubernetes/'
require_pattern "keycape/ auth method is visible" "$auth_output" '(^|[[:space:]])keycape/'
else
printf '%s\n' "$auth_output" >&2
fail "bao auth list succeeded"
fi
after_bytes="$(audit_log_bytes || true)"
after_bytes="${after_bytes:-0}"
step "Audit log file"
if [ "$after_bytes" -gt 0 ]; then
ok "audit log file is non-empty (${after_bytes} bytes)"
else
fail "audit log file is non-empty"
fi
if [ "$DRY_RUN" -eq 1 ]; then
ok "audit log growth check skipped in dry-run"
elif [ "$after_bytes" -gt "$before_bytes" ]; then
ok "audit log grew during authenticated checks (${before_bytes} -> ${after_bytes} bytes)"
else
warn "audit log size did not increase during this run (${before_bytes} -> ${after_bytes} bytes)"
fi
if [ "$FAILURES" -gt 0 ]; then
printf '\nAuthenticated OpenBao verification failed with %s failure(s) and %s warning(s).\n' "$FAILURES" "$WARNINGS" >&2
exit 1
fi
printf '\nAuthenticated OpenBao verification passed'
if [ "$WARNINGS" -gt 0 ]; then
printf ' with %s warning(s)' "$WARNINGS"
fi
printf '.\n'

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@@ -265,6 +265,17 @@ pin the live OpenBao image tag to `2.5.4`; Helm release revision 3 has the same
explicit tag and the pod remained ready, so future chart upgrades do not
implicitly change the runtime version while applying unrelated configuration.
**2026-06-01:** Added `make openbao-verify-authenticated` as a non-mutating
operator proof for the remaining OpenBao readiness checks that require an
approved token. The helper prompts for the token without echoing it, verifies
`file/` audit visibility, `platform/` secrets, `kubernetes/` and `keycape/`
auth methods, and confirms the audit log file is non-empty. It can also use an
already-valid pod token helper via
`OPENBAO_VERIFY_AUTH_ARGS=--use-token-helper` so the token does not move
through the local shell at all. Durable audit shipping beyond the audit PVC
remains intentionally open until a tested sink is selected; State Hub notes and
hashes are evidence, not retained audit custody.
### T07 - Cross-Repo Transition Tasks
```task