Pular para o conteúdo principal

Docker Swarms & Load Balancing

Docker Swarms group nodes into a cluster for running compute instances and services. EasyHAProxy provides automatic load balancing and ingress routing.

Create a swarm​

nimbus swarm create --name production --lb

The --lb flag automatically deploys EasyHAProxy as a load balancer.

Cloudflare integration​

nimbus swarm create --name production --lb \
  --cloudflare /path/to/cloudflare.env

The env file should contain CLOUDFLARE_TOKEN and CLOUDFLARE_DOMAIN.

Add and remove nodes​

nimbus swarm add-node --swarm SWARM_ID --node NODE_ID

The first node becomes the manager; additional nodes join as workers.

List swarms​

nimbus swarm list

Load balancer management​

If you didn't use --lb at creation time, you can manage the load balancer separately:

# Deploy EasyHAProxy
nimbus swarm lb set --swarm SWARM_ID

# List load balancers
nimbus swarm lb list

# Remove EasyHAProxy
nimbus swarm lb remove --swarm SWARM_ID

Gateway status​

View the routing table showing how domains are mapped to services:

nimbus gateway status

Local DNS​

Configure your workstation to resolve swarm domains (e.g., web-1.production.nimbus) via dnsmasq running on the swarm manager:

sudo nimbus dns setup

This configures systemd-resolved to forward queries for swarm domains to the manager node's dnsmasq. To remove:

sudo nimbus dns remove

Delete a swarm​

nimbus swarm delete SWARM_ID