For self-hosted / on-premises deployments, you can enable the knowledge base features by setting`ON_PREM_KNOWLEDGE_BASE=true` in the environment variables for your self-hosted docker image.

For self-hosted / on-premises deployments, you can enable the knowledge base features by setting`SELF_HOSTED_KNOWLEDGE_BASE=true` in the environment variables for your self-hosted docker image.

You must also be running ChromaDB. Use image`chromadb/chroma:0.5.20`. In your CodeRabbit docker image environment variables, set`CHROMADB_URL` to point to the hostname where ChromaDB can be reached. For persistance of your ChromaDB data, mount`/chroma/chroma` in the container to a volume mount. For more information on ChromaDB docker deployment, including how to set up authentication, refer to the[official documentation](https://docs.trychroma.com/deployment/docker). CodeRabbit will use`CHROMA_CLIENT_AUTH_CREDENTIALS` if it is set.

By default, CodeRabbit will store its data in the`coderabbitai/data` branch, unless you set a value for`ON_PREM_KNOWLEDGE_BASE_BRANCH=<branch_name>`.

By default, CodeRabbit will store its data in the`coderabbitai/data` branch, unless you set a value for`SELF_HOSTED_KNOWLEDGE_BASE_BRANCH=<branch_name>`.

- CodeRabbit should respond that it has added a learning.

- Check out the branch called`coderabbit/data` in the repository (or whatever branch name you have set for`ON_PREM_KNOWLEDGE_BASE_BRANCH`). It should contain a file called learnings.json with an entry containing what you told it to remember.

- Check out the branch called`coderabbit/data` in the repository (or whatever branch name you have set for`SELF_HOSTED_KNOWLEDGE_BASE_BRANCH`). It should contain a file called learnings.json with an entry containing what you told it to remember.

- Future PRs should utilize the contents of this learnings file. Congratulations! You have configured the CodeRabbit Self-hosted knowledge base.