Welcome! Our community focuses on helping others and making CoreDNS the best it can be. We gladly accept contributions and encourage you to get involved!
First, please search this repository with a variety of keywords to ensure your bug is not already reported.
If not, open an issue and answer the questions so we can understand and reproduce the problematic behavior.
The burden is on you to convince us that it is actually a bug in CoreDNS. This is easiest to do when you write clear, concise instructions so we can reproduce the behavior (even if it seems obvious). The more detailed and specific you are, the faster we will be able to help you. Check out How to Report Bugs Effectively.
Please be kind. 😄 Remember that CoreDNS comes at no cost to you, and you're getting free help.
Submit pull requests at any time. Make sure to write tests to assert your change is working properly and is thoroughly covered.
First, please search with a variety of keywords to ensure your suggestion/proposal is new.
If so, you may open either an issue or a pull request for discussion and feedback.
The advantage of issues is that you don't have to spend time actually implementing your idea, but you should still describe it thoroughly. The advantage of a pull request is that we can immediately see the impact the change will have on the project, what the code will look like, and how to improve it. The disadvantage of pull requests is that they are unlikely to get accepted without significant changes, or it may be rejected entirely. Don't worry, that won't happen without an open discussion first.
If you are going to spend significant time implementing code for a pull request, best to open an issue first and "claim" it and get feedback before you invest a lot of time.
If you've found a vulnerability that is serious, please email me: miek@miek.nl If it's not a big deal, a pull request will probably be faster.
Thanks for your help! CoreDNS would not be what it is today without your contributions.