ceph-doc-kb

Version-aware, component-scoped Ceph documentation knowledge base. Indexes Ceph RST docs into per-component vector indices with two-tier search (BM25 + semantic via fastembed/FAISS).

Quick Start

# Install
pip install -e .

# Build index from Ceph docs
git clone --depth 1 --branch v20.2.1 --sparse https://github.com/ceph/ceph.git /tmp/ceph-docs
cd /tmp/ceph-docs && git sparse-checkout set doc
cd /path/to/ceph-doc-kb
python3 index_docs.py --docs-path /tmp/ceph-docs/doc --version 20.2.1 --verbose

Related MCP server: Local Search MCP Server

Architecture

• Component-scoped indices: Each Ceph component (rados, rbd, rgw, cephfs, cephadm) gets its own FAISS index for fast, targeted search

• Two-tier search: BM25 keyword match for exact terms, fastembed semantic search for conceptual queries

• Command cross-reference: Instant lookup from any ceph/rbd/rados command to relevant docs

• Quality scoring: Chunks with code examples, commands, and explanations rank higher

• Version-aware: Supports multiple Ceph release indices side by side

MCP Server

{
  "mcpServers": {
    "ceph-doc-kb": {
      "command": "python3",
      "args": ["-m", "ceph_doc_kb.server.mcp_server"],
      "cwd": "/path/to/ceph-doc-kb"
    }
  }
}

Tools

REST API

python3 -m ceph_doc_kb.server.rest_api
# http://127.0.0.1:8100/api/search?query=erasure+coding&component=rados

See BOB_INTEGRATION_GUIDE.md for full endpoint reference with curl examples.

VS Code Extension

A VS Code extension is available for interactive documentation search:

cd vscode-extension && npm install
# Install via "Developer: Install Extension from Location..."

Features: search docs (Cmd+Alt+D), search examples (Cmd+Alt+E), find docs for command (Cmd+Alt+F), insert code at cursor.

See vscode-extension/README.md for details.

Agent Integration

Python client for LLM agents (no external dependencies):

from examples.agent_integration import CephDocKBClient

client = CephDocKBClient("http://localhost:8100")
results = client.search_docs("erasure coding", component="rados")

LangChain and CrewAI wrappers included. See BOB_INTEGRATION_GUIDE.md.

Incremental Updates

python3 index_docs.py --update --docs-path /tmp/ceph-docs/doc \
    --repo-path /tmp/ceph-docs --from-version v20.2.1 --to-version v20.2.2

Documentation

Development

pip install -e ".[dev]"
pytest

See DEVELOPMENT.md for architecture details and contributing.