--- tags: - ceph - storage --- Ceph provides Block Storage, Object Storage as well as shared filesystem. ![[Intro to Ceph.excalidraw]] **Monitor** (`ceph-mon`) maintains cluster state and is crucial for daemon coordination. Also manages authentication between clients and daemons. **Manager** (`ceph-mgr`) keep track of runtime state such as utilization etc, comes with a dashboard. **OSD** (`ceph-osd`) These do the actual storage work. **MDS** (metadatas server, `ceph-mds`) Stores filesystem metadata **RGW** (`ceph-radosgw`) API to the cluster. S3 and swift compatible.