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ceph-osd is the object storage daemon for the Ceph distributed file system. It is responsible for storing objects on a local file system and providing access to them over the network.
acquired package info from repodata DB: repodata/0e50863276b0c82d93577659f4645d8d6796dfed61d40c2c5b4d6833adbfc2dc-primary.sqlite.bz2
ceph-mon is the cluster monitor daemon for the Ceph distributed file system. One or more instances of ceph-mon form a Paxos part-time parliament cluster that provides extremely reliable and durable storage of cluster membership, configuration, and state.
systemd is a system and service manager that runs as PID 1 and starts the rest of the system.
ceph-mgr enables python modules that provide services (such as the REST module derived from Calamari) and expose CLI hooks. ceph-mgr gathers the cluster maps, the daemon metadata, and performance counters, and exposes all these to the python modules.
User space components of the Ceph file system
Ceph is a massively scalable, open-source, distributed storage system that runs on commodity hardware and delivers object, block and file system storage.
ceph-mds is the metadata server daemon for the Ceph distributed file system. One or more instances of ceph-mds collectively manage the file system namespace, coordinating access to the shared OSD cluster.