202 lines
5.1 KiB
Plaintext
202 lines
5.1 KiB
Plaintext
[[cluster-update-settings]]
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== Cluster Update Settings
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Allows to update cluster wide specific settings. Settings updated can
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either be persistent (applied cross restarts) or transient (will not
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survive a full cluster restart). Here is an example:
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[source,js]
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--------------------------------------------------
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curl -XPUT localhost:9200/_cluster/settings -d '{
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"persistent" : {
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"discovery.zen.minimum_master_nodes" : 2
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}
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}'
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--------------------------------------------------
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Or:
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[source,js]
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--------------------------------------------------
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curl -XPUT localhost:9200/_cluster/settings -d '{
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"transient" : {
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"discovery.zen.minimum_master_nodes" : 2
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}
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}'
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--------------------------------------------------
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The cluster responds with the settings updated. So the response for the
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last example will be:
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[source,js]
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--------------------------------------------------
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{
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"persistent" : {},
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"transient" : {
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"discovery.zen.minimum_master_nodes" : "2"
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}
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}'
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--------------------------------------------------
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Cluster wide settings can be returned using:
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[source,js]
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--------------------------------------------------
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curl -XGET localhost:9200/_cluster/settings
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--------------------------------------------------
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There is a specific list of settings that can be updated, those include:
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[float]
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[[cluster-settings]]
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=== Cluster settings
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[float]
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==== Routing allocation
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[float]
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===== Awareness
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`cluster.routing.allocation.awareness.attributes`::
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See <<modules-cluster>>.
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`cluster.routing.allocation.awareness.force.*`::
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See <<modules-cluster>>.
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[float]
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===== Balanced Shards
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All these values are relative to one another. The first three are used to
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compose a three separate weighting functions into one. The cluster is balanced
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when no allowed action can bring the weights of each node closer together by
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more then the fourth setting. Actions might not be allowed, for instance,
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due to forced awareness or allocation filtering.
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`cluster.routing.allocation.balance.shard`::
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Defines the weight factor for shards allocated on a node
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(float). Defaults to `0.45f`. Raising this raises the tendency to
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equalize the number of shards across all nodes in the cluster.
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`cluster.routing.allocation.balance.index`::
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Defines a factor to the number of shards per index allocated
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on a specific node (float). Defaults to `0.55f`. Raising this raises the
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tendency to equalize the number of shards per index across all nodes in
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the cluster.
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`cluster.routing.allocation.balance.threshold`::
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Minimal optimization value of operations that should be performed (non
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negative float). Defaults to `1.0f`. Raising this will cause the cluster
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to be less aggressive about optimizing the shard balance.
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[float]
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===== Concurrent Rebalance
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`cluster.routing.allocation.cluster_concurrent_rebalance`::
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Allow to control how many concurrent rebalancing of shards are
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allowed cluster wide, and default it to `2` (integer). `-1` for
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unlimited. See also <<modules-cluster>>.
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[float]
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===== Enable allocation
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`cluster.routing.allocation.enable`::
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See <<modules-cluster>>.
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[float]
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===== Throttling allocation
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`cluster.routing.allocation.node_initial_primaries_recoveries`::
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See <<modules-cluster>>.
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`cluster.routing.allocation.node_concurrent_recoveries`::
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See <<modules-cluster>>.
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[float]
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===== Filter allocation
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`cluster.routing.allocation.include.*`::
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See <<modules-cluster>>.
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`cluster.routing.allocation.exclude.*`::
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See <<modules-cluster>>.
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`cluster.routing.allocation.require.*`
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See <<modules-cluster>>.
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[float]
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==== Metadata
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`cluster.blocks.read_only`::
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Have the whole cluster read only (indices do not accept write operations), metadata is not allowed to be modified (create or delete indices).
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[float]
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==== Discovery
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`discovery.zen.minimum_master_nodes`::
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See <<modules-discovery-zen>>
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`discovery.zen.publish_timeout`::
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See <<modules-discovery-zen>>
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[float]
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==== Threadpools
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`threadpool.*`::
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See <<modules-threadpool>>
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[float]
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[[cluster-index-settings]]
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=== Index settings
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[float]
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==== Index filter cache
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`indices.cache.filter.size`::
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See <<index-modules-cache>>
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[float]
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==== TTL interval
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`indices.ttl.interval` (time)::
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See <<mapping-ttl-field>>
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[float]
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==== Recovery
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`indices.recovery.concurrent_streams`::
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See <<modules-indices>>
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`indices.recovery.concurrent_small_file_streams`::
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See <<modules-indices>>
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`indices.recovery.file_chunk_size`::
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See <<modules-indices>>
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`indices.recovery.translog_ops`::
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See <<modules-indices>>
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`indices.recovery.translog_size`::
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See <<modules-indices>>
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`indices.recovery.compress`::
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See <<modules-indices>>
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`indices.recovery.max_bytes_per_sec`::
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See <<modules-indices>>
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[float]
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[[logger]]
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=== Logger
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Logger values can also be updated by setting `logger.` prefix. More
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settings will be allowed to be updated.
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[float]
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=== Field data circuit breaker
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`indices.breaker.fielddata.limit`::
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See <<index-modules-fielddata>>
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`indices.breaker.fielddata.overhead`::
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See <<index-modules-fielddata>>
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