---
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]]