af2222fce8
Phase 1: Add 12 PrometheusRules for backup health alerting - PostgreSQL, MySQL, Vault, Vaultwarden, Redis staleness + never-succeeded alerts - CSIDriverCrashLoop alert for nfs-csi/iscsi-csi namespaces - Generic BackupCronJobFailed alert Phase 2: Fix backup rotation - etcd: timestamped snapshots instead of overwriting single file - Redis: timestamped RDB files with 7-day retention purge - PostgreSQL: retention increased from 7 to 14 days Phase 3: Fix MySQL password exposure - Move root password from command line arg to MYSQL_PWD env var via secretKeyRef Phase 5: Add restore runbooks - PostgreSQL, MySQL, Vault, etcd, Vaultwarden, full cluster rebuild
99 lines
2.8 KiB
Markdown
99 lines
2.8 KiB
Markdown
# Restore Vault (Raft)
|
|
|
|
## Prerequisites
|
|
- `kubectl` access to the cluster
|
|
- Vault root token (from `vault-root-token` secret in `vault` namespace — manually created, independent of automation)
|
|
- Raft snapshot available on NFS at `/mnt/main/vault-backup/`
|
|
- Unseal keys (stored securely — check `secret/viktor` in Vault or emergency kit)
|
|
|
|
## Backup Location
|
|
- NFS: `/mnt/main/vault-backup/vault-raft-YYYYMMDD-HHMMSS.db`
|
|
- Replicated to Synology NAS (192.168.1.13) via TrueNAS ZFS replication
|
|
- Retention: 30 days
|
|
- Schedule: Daily at 02:00
|
|
|
|
## CRITICAL: Vault is a dependency for many services
|
|
Vault provides secrets to the entire cluster via ESO (External Secrets Operator). A Vault outage affects:
|
|
- All ExternalSecrets (43 secrets + 9 DB-creds secrets)
|
|
- Vault DB engine password rotation
|
|
- K8s credentials engine
|
|
- CI/CD secret sync
|
|
|
|
**Priority: Restore Vault before any other service (except etcd).**
|
|
|
|
## Restore Procedure
|
|
|
|
### 1. Identify the snapshot to restore
|
|
```bash
|
|
# List available snapshots
|
|
ls -lt /mnt/main/vault-backup/vault-raft-*.db | head -10
|
|
```
|
|
|
|
### 2. Restore Raft snapshot
|
|
```bash
|
|
# Get root token
|
|
VAULT_TOKEN=$(kubectl get secret vault-root-token -n vault -o jsonpath='{.data.vault-root-token}' | base64 -d)
|
|
|
|
# Port-forward to Vault
|
|
kubectl port-forward svc/vault-active -n vault 8200:8200 &
|
|
|
|
# Restore the snapshot (this will overwrite current state)
|
|
export VAULT_ADDR=http://127.0.0.1:8200
|
|
export VAULT_TOKEN
|
|
vault operator raft snapshot restore -force /path/to/vault-raft-YYYYMMDD-HHMMSS.db
|
|
```
|
|
|
|
### 3. Unseal Vault (if sealed after restore)
|
|
```bash
|
|
# Check seal status
|
|
vault status
|
|
|
|
# If sealed, unseal with keys (need threshold number of keys)
|
|
vault operator unseal <key1>
|
|
vault operator unseal <key2>
|
|
vault operator unseal <key3>
|
|
```
|
|
|
|
### 4. Verify restoration
|
|
```bash
|
|
# Check Vault health
|
|
vault status
|
|
|
|
# Check raft peers
|
|
vault operator raft list-peers
|
|
|
|
# Verify key secrets exist
|
|
vault kv get secret/viktor
|
|
vault kv list secret/
|
|
|
|
# Check DB engine
|
|
vault list database/roles
|
|
|
|
# Check K8s engine
|
|
vault list kubernetes/roles
|
|
```
|
|
|
|
### 5. Trigger ESO refresh
|
|
After Vault restore, ExternalSecrets may need a refresh:
|
|
```bash
|
|
# Restart ESO to force re-sync
|
|
kubectl rollout restart deployment -n external-secrets
|
|
|
|
# Check ExternalSecret status
|
|
kubectl get externalsecrets -A | grep -v "SecretSynced"
|
|
```
|
|
|
|
## Full Vault Rebuild (from zero)
|
|
If Vault needs to be rebuilt from scratch:
|
|
1. Comment out data sources + OIDC config in `stacks/vault/main.tf`
|
|
2. Apply Helm release: `scripts/tg apply -target=helm_release.vault stacks/vault`
|
|
3. Initialize: `vault operator init`
|
|
4. Unseal with generated keys
|
|
5. Restore raft snapshot (step 2 above)
|
|
6. Populate `secret/vault` with OIDC credentials
|
|
7. Uncomment data sources + OIDC
|
|
8. Re-apply: `scripts/tg apply stacks/vault`
|
|
|
|
## Estimated Time
|
|
- Snapshot restore + unseal: ~10 minutes
|
|
- Full rebuild: ~30-45 minutes
|