Upgrading MariaDB on Synology Docker: 10.11 to 12.3, WordPress Fix and Nightly Backups
A real MariaDB 10.11 to 12.3 upgrade on Synology, fixing WordPress's broken Docker network and scheduling verified nightly SQL backups before WUD updates.
Category Docker
Docker projects and guides covering containers, Compose stacks, Portainer and self-hosted services used across Realm Labs.
Replacing Watchtower with WUD on Synology: Docker Updates, Portainer and Telegram
How I migrated from Watchtower to What's Up Docker on Synology, with selective 02:00 auto-updates, Portainer, Telegram alerts and a real Plex update test.
Automating Docker Updates on Synology with Watchtower, Portainer and Telegram
My working Synology Docker watchdog: Watchtower checks selected Portainer containers at 2 AM, recreates updated images, and alerts via Telegram only on changes or failures.
Grafana Suddenly Slow? Tracing a Docker MAC Address Collision
Grafana dashboards became painfully slow even though CPU and RAM looked fine. The real cause was a duplicate Docker MAC address on a Synology-hosted bridge network — and the fix exposed a useful lesson about stale neighbour entries too.
Docker Is the Engine, Portainer Is the Dashboard: Why I Use Portainer in Realm Labs
Portainer is probably one of the longest-running pieces of software in Realm Labs. Long before the current Synology, Proxmox, Home Assistant and centralised automation setup existed, I was already using Docker on a Raspberry Pi. And almost immediately, I put…
Fixing “Docker Client Version 1.25 Is Too Old” on Debian
This one looked like a Docker Engine problem. It wasn’t. The host itself had a modern Docker installation, the daemon was running normally, and the API version was current. But one application still refused to start with an error along…
Fixing Docker Permissions on a Synology NFS Share
Docker permissions can be confusing enough on a normal Linux machine. Add a Synology NAS, an NFS share and containers running under different user IDs, and things get interesting very quickly. This particular problem appeared when I started storing application…
Updating Portainer Without Losing Your Containers
Portainer had become one of those tools in Realm Labs that I used constantly but rarely thought about. It sat there managing Docker, giving me a clean web interface for containers, images, volumes, networks and stacks. Then one day I…