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30 lines
1.1 KiB
ReStructuredText
30 lines
1.1 KiB
ReStructuredText
===============================
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Configuring a Storage Cluster
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===============================
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Ceph can run with a cluster containing thousands of Object Storage Devices
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(OSDs). A minimal system will have at least two OSDs for data replication. To
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configure OSD clusters, you must provide settings in the configuration file.
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Ceph provides default values for many settings, which you can override in the
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configuration file. Additionally, you can make runtime modification to the
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configuration using command-line utilities.
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When Ceph starts, it activates three daemons:
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- ``ceph-osd`` (mandatory)
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- ``ceph-mon`` (mandatory)
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- ``ceph-mds`` (mandatory for cephfs only)
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Each process, daemon or utility loads the host's configuration file. A process
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may have information about more than one daemon instance (*i.e.,* multiple
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contexts). A daemon or utility only has information about a single daemon
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instance (a single context).
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.. note:: Ceph can run on a single host for evaluation purposes.
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.. toctree::
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file-system-recommendations
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Configuration <ceph-conf>
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Deploy Config <deploying-ceph-conf>
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deploying-ceph-with-mkcephfs
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