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max_open_files is not generated from yaml files, so define it using "describe" directive instead. Signed-off-by: Kefu Chai <kchai@redhat.com>
40 lines
1.1 KiB
ReStructuredText
40 lines
1.1 KiB
ReStructuredText
Local Pool Module
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=================
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.. mgr_module:: localpool
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The *localpool* module can automatically create RADOS pools that are
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localized to a subset of the overall cluster. For example, by default, it will
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create a pool for each distinct ``rack`` in the cluster. This can be useful for
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deployments where it is desirable to distribute some data locally and other data
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globally across the cluster. One use-case is measuring performance and testing
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behavior of specific drive, NIC, or chassis models in isolation.
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Enabling
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--------
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The *localpool* module is enabled with::
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ceph mgr module enable localpool
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Configuring
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-----------
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The *localpool* module understands the following options:
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.. confval:: subtree
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.. confval:: failure_domain
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.. confval:: pg_num
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.. confval:: num_rep
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.. confval:: min_size
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.. confval:: prefix
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:default: by-$subtreetype-
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These options are set via the config-key interface. For example, to
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change the replication level to 2x with only 64 PGs, ::
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ceph config set mgr mgr/localpool/num_rep 2
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ceph config set mgr mgr/localpool/pg_num 64
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.. mgr_module:: None
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