Question 1

How do I set up Docker Flow Proxy with Docker Swarm?

Accepted Answer

Deploy it as a service in your Swarm cluster, and it will automatically detect and reconfigure HAProxy based on service labels or environment variables, ensuring seamless integration. Refer to the project documentation for detailed steps and examples.

Question 2

Docker Flow Proxy vs Traefik: which is better for Docker?

Accepted Answer

Docker Flow Proxy focuses on automating HAProxy with on-demand updates, making it ideal for HAProxy-centric teams. Traefik offers more built-in features and cloud-native support, but Docker Flow Proxy is simpler if you prefer HAProxy's reliability and don't need extra bells and whistles.

Question 3

Does Docker Flow Proxy handle SSL termination automatically?

Accepted Answer

It relies on HAProxy for SSL termination, so you need to configure SSL certificates within HAProxy settings. The automation helps with reconfiguration but doesn't manage certificates out-of-the-box, requiring manual or external tooling for SSL setup.

Question 4

What happens to active connections during proxy reconfiguration?

Accepted Answer

HAProxy handles connections gracefully during updates, typically with zero downtime, as Docker Flow Proxy triggers reconfiguration on-demand. However, ensure your HAProxy configuration is tuned for smooth transitions to avoid disruptions.

Question 5

Can I use custom HAProxy configurations with Docker Flow Proxy?

Accepted Answer

Yes, you can integrate custom HAProxy snippets or configurations through environment variables or labels, but this requires careful management to avoid conflicts with the automated reconfiguration logic.

Question 6

How does service discovery work in Docker Flow Proxy?

Accepted Answer

It monitors Docker events or uses service labels to detect new or scaled services, then dynamically updates HAProxy configuration to include them, enabling automatic load balancing without manual intervention.

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