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+---
+title: MariaDB Galera + MaxScale
+category: systems
+tags: [mariadb, galera, maxscale, database, ha]
+created: "2026-07-24"
+modified: "2026-07-24"
+---
+
+# MariaDB Galera + MaxScale
+
+## Galera Cluster (3/3 Synced)
+| Node | VM | IP | Role |
+|------|----|----|------|
+| db1 | VM300 (ms-a2-1) | 10.0.30.71 | Slave |
+| db2 | VM301 (proxmox3) | 10.0.30.72 | Slave |
+| db3 | VM302 (proxmox6) | 10.0.30.73 | Master |
+
+- **Root Credentials:** `/root/.my.cnf` auf VM300 (via `qm guest exec`)
+- **1Password `mariadb-root` Item:** PASSWORT IST FALSCH — stimmt nicht mit `/root/.my.cnf` überein
+
+## MaxScale Proxy (HA)
+| Node | VM | IP | Port |
+|------|----|----|------|
+| MaxScale-01 | VM310 (proxmox1) | 10.0.30.81 | Admin :8989 |
+| MaxScale-02 | VM311 (ms-a2-1) | 10.0.30.82 | Standby |
+| **VIP** | — | **10.0.30.70** | :3306 (keepalived) |
+
+- **Admin:** `admin:mariadb` auf :8989
+
+## VM Konfiguration
+- VM300: `balloon: 0` (disabled) — verhindert InnoDB Buffer Pool Swapping
+- Standard Practice für DB VMs
+
+## Fluent Bit
+- VM300/301/302 (Galera): Fluent Bit aktiv
+- VM310/311 (MaxScale): Fluent Bit aktiv
+
+## Related Skills
+- `mariadb-galera-cluster-administration` (devops)
+
+## Related
+- [[systems/proxmox-cluster]]
+- [[reference/ip-map]]