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115 lines
4.4 KiB
Bash
Executable file
115 lines
4.4 KiB
Bash
Executable file
#!/usr/bin/env bash
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# =============================================================================
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# lib/init/nomad/vault-engines.sh — Enable required Vault secret engines
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#
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# Part of the Nomad+Vault migration (S2.1). Enables the KV v2 secret engine
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# at the `kv/` path, which is required by all policies in vault/policies/*.hcl,
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# all roles in vault/roles.yaml, and by vault-import.sh and forgejo.hcl
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# template stanzas that read from kv/disinto/* paths.
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#
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# Idempotency contract:
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# - If kv/ is already enabled at path=kv (version=2), log "already enabled"
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# and exit 0 without any Vault API calls.
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# - If kv/ is enabled at a different path or version, log an error and exit 1.
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# - Second run on a fully-configured box is a silent no-op.
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#
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# Preconditions:
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# - Vault is unsealed and reachable (VAULT_ADDR + VAULT_TOKEN set).
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# - Must run AFTER vault-init.sh (unseal complete) but BEFORE
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# vault-apply-policies.sh (policies reference kv/* paths).
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#
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# Environment:
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# VAULT_ADDR — default http://127.0.0.1:8200.
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# VAULT_TOKEN — env OR /etc/vault.d/root.token (resolved by lib/hvault.sh).
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#
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# Usage:
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# sudo lib/init/nomad/vault-engines.sh
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#
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# Exit codes:
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# 0 success (kv enabled, or already so)
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# 1 precondition / API failure
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# =============================================================================
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO_ROOT="$(cd "${SCRIPT_DIR}/../../.." && pwd)"
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# shellcheck source=../../hvault.sh
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source "${REPO_ROOT}/lib/hvault.sh"
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log() { printf '[vault-engines] %s\n' "$*"; }
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die() { printf '[vault-engines] ERROR: %s\n' "$*" >&2; exit 1; }
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# ── Flag parsing ─────────────────────────────────────────────────────────────
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case "${1:-}" in
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-h|--help)
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cat <<'EOF'
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Usage: sudo $(basename "$0") [--dry-run]
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Enables the KV v2 secret engine at path=kv/. Required by all Vault policies,
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roles, and Nomad job templates that reference kv/disinto/* paths.
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--dry-run Print the enable command without making changes.
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EOF
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exit 0
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;;
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--dry-run)
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# Dry-run: just echo what would happen
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if vault secrets list -format=json | jq -e '."kv/"' >/dev/null 2>&1; then
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log "[dry-run] kv-v2 at kv/ already enabled"
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else
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log "[dry-run] would run: vault secrets enable -path=kv -version=2 kv"
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fi
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exit 0
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;;
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'')
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;;
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*)
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die "unknown flag: $1"
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;;
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esac
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# ── Preconditions ────────────────────────────────────────────────────────────
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for bin in curl jq; do
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command -v "$bin" >/dev/null 2>&1 \
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|| die "required binary not found: ${bin}"
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done
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# Default VAULT_ADDR if not set (fixes issue #2)
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VAULT_ADDR="${VAULT_ADDR:-http://127.0.0.1:8200}"
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export VAULT_ADDR
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# Resolve VAULT_TOKEN if not set (fixes issue #2)
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if [ -z "${VAULT_TOKEN:-}" ] && [ -f /etc/vault.d/root.token ]; then
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VAULT_TOKEN="$(cat /etc/vault.d/root.token)"
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export VAULT_TOKEN
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fi
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# Check Vault connectivity and unsealed status
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hvault_token_lookup >/dev/null \
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|| die "Vault auth probe failed — check VAULT_ADDR + VAULT_TOKEN"
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# ── Check if kv/ is already enabled ──────────────────────────────────────────
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log "── Checking if kv-v2 is already enabled ──"
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secrets_list="$(vault secrets list -format=json)"
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if printf '%s' "$secrets_list" | jq -e '."kv/"' >/dev/null 2>&1; then
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# kv/ exists — verify it's v2
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kv_type="$(printf '%s' "$secrets_list" | jq -r '."kv/".type // ""')"
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kv_version="$(printf '%s' "$secrets_list" | jq -r '."kv/".options.version // "unknown"')"
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if [ "$kv_type" = "kv" ] && [ "$kv_version" = "2" ]; then
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log "kv-v2 at kv/ already enabled (type=${kv_type}, version=${kv_version})"
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exit 0
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else
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die "kv/ exists but is not kv-v2 (type=${kv_type}, version=${kv_version}) — manual intervention required"
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fi
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fi
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# ── Enable kv-v2 ──────────────────────────────────────────────────────────────
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log "── Enabling kv-v2 at path=kv ──"
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vault secrets enable -path=kv -version=2 kv \
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|| die "failed to enable kv-v2 secret engine"
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log "kv-v2 enabled at kv/"
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log "── done ──"
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