Servers & Cluster

The SSERIS platform runs on a two-node Docker Swarm cluster spanning two cloud providers, connected by a WireGuard VPN tunnel.

Cluster Nodes

az-apps-dev02

Swarm Leader · Microsoft Azure

Spec	Value
Public IP	4.180.181.86
WireGuard IP	10.10.0.2
CPU	8 vCPU
Memory	62.8 GB
Disk	248 GB (218 GB free)
OS	Ubuntu 22.04.5 LTS
Docker	29.0.0
SSH	kaks@4.180.181.86

vmi2912133

Reachable · Contabo VPS

Spec	Value
Public IP	84.247.134.135
WireGuard IP	10.10.0.1
CPU	12 vCPU
Memory	47 GB
Disk	484 GB (256 GB free)
OS	Ubuntu 24.04.3 LTS
Docker	29.0.1
SSH	pk@84.247.134.135

Workload Distribution

Server	Stacks	Services	Role
Azure	DEV	20 services	Swarm Leader, all DEV workloads
Contabo	UAT + Shared	17 + 12 services	UAT workloads, Harbor, Nexus, runners
Both	—	Nginx (global mode, part of DEV stack)	Reverse proxy on every node

Swarm Status

Check the cluster health at any time:

docker node ls

Expected output shows both nodes as Ready with Azure as Leader and Contabo as Reachable.

Note

Azure joined the Swarm via its WireGuard IP (10.10.0.2), not its public IP. If the WireGuard tunnel goes down, the Swarm loses connectivity between nodes. See WireGuard VPN for troubleshooting.