60 lines
2.2 KiB
Plaintext
60 lines
2.2 KiB
Plaintext
[[modules-gateway]]
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== Local Gateway
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The local gateway module stores the cluster state and shard data across full
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cluster restarts.
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The following _static_ settings, which must be set on every master node,
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control how long a freshly elected master should wait before it tries to
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recover the cluster state and the cluster's data:
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`gateway.expected_nodes`::
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The number of (data or master) nodes that are expected to be in the cluster.
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Recovery of local shards will start as soon as the expected number of
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nodes have joined the cluster. Defaults to `0`
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`gateway.expected_master_nodes`::
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The number of master nodes that are expected to be in the cluster.
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Recovery of local shards will start as soon as the expected number of
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master nodes have joined the cluster. Defaults to `0`
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`gateway.expected_data_nodes`::
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The number of data nodes that are expected to be in the cluster.
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Recovery of local shards will start as soon as the expected number of
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data nodes have joined the cluster. Defaults to `0`
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`gateway.recover_after_time`::
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If the expected number of nodes is not achieved, the recovery process waits
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for the configured amount of time before trying to recover regardless.
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Defaults to `5m` if one of the `expected_nodes` settings is configured.
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Once the `recover_after_time` duration has timed out, recovery will start
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as long as the following conditions are met:
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`gateway.recover_after_nodes`::
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Recover as long as this many data or master nodes have joined the cluster.
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`gateway.recover_after_master_nodes`::
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Recover as long as this many master nodes have joined the cluster.
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`gateway.recover_after_data_nodes`::
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Recover as long as this many data nodes have joined the cluster.
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NOTE: These settings only take effect on a full cluster restart.
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=== Dangling indices
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When a node joins the cluster, any shards stored in its local data
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directory which do not already exist in the cluster will be imported into the
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cluster. This functionality is intended as a best effort to help users who
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lose all master nodes. If a new master node is started which is unaware of
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the other indices in the cluster, adding the old nodes will cause the old
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indices to be imported, instead of being deleted.
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