Question 1

How do I set up Registrator with Consul for service discovery?

Accepted Answer

Run Registrator as a Docker container with the Docker socket mounted and specify the Consul backend URI, e.g., 'consul://localhost:8500'. Ensure Consul is running and accessible, and use CLI options like -ip or -tags for customization as per the quickstart guide.

Question 2

Registrator vs. Consul's native Docker integration: which is better?

Accepted Answer

Registrator offers automatic registration across multiple backends and more flexible configuration, while Consul's native Docker integration is tighter but Consul-specific. Choose Registrator for multi-backend support or Consul for a simpler, integrated solution if only using Consul.

Question 3

How to add custom tags to services registered by Registrator?

Accepted Answer

Use the -tags CLI option with Registrator, which supports Go templates for dynamic tagging. For example, '-tags="{{.Name}}"' adds the container name as a tag, and you can combine with labels for more control as documented.

Question 4

Can Registrator work in a Kubernetes environment?

Accepted Answer

Registrator is designed for Docker and may not integrate seamlessly with Kubernetes, which has its own service discovery. It's possible but not ideal; consider Kubernetes-native tools like CoreDNS or service meshes for better compatibility.

Question 5

What are the security best practices when using Registrator?

Accepted Answer

Secure the Docker socket with proper permissions, run Registrator in a isolated network, and use internal IPs with -ip option. Avoid exposing the socket in multi-tenant environments and monitor for unauthorized access.

Question 6

How to configure automatic service cleanup with Registrator?

Accepted Answer

Use the -cleanup flag to remove dangling services and -deregister to control deregistration policies (e.g., 'on-success'). Set -resync for periodic consistency checks to handle edge cases like container crashes.

Question 7

Is gliderlabs/registrator still actively maintained?

Accepted Answer

While the project shows CI activity and Docker pulls, major updates may be infrequent. Check the GitHub repository for recent commits and issues; it's stable but might lag behind newer tools in feature development.

registrator

What is registrator?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions