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685c1f4a54
With 2.0, we now bind to `localhost` by default instead of binding to the network card and use its IP address. When the discovery plugin gets from AWS API the list of nodes that should form the cluster, this list is pinged then. But as each node is bound to `localhost`, ping does not get an answer and the node elects itself as the master node. `network.host` must be set. Closes #13589.
83 lines
3.3 KiB
Plaintext
83 lines
3.3 KiB
Plaintext
[[modules-network]]
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== Network Settings
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There are several modules within a Node that use network based
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configuration, for example, the
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<<modules-transport,transport>> and
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<<modules-http,http>> modules. Node level
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network settings allows to set common settings that will be shared among
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all network based modules (unless explicitly overridden in each module).
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The `network.bind_host` setting allows to control the host different network
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components will bind on. By default, the bind host will be `_local_`
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(loopback addresses such as `127.0.0.1`, `::1`).
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The `network.publish_host` setting allows to control the host the node will
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publish itself within the cluster so other nodes will be able to connect to it.
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Currently an elasticsearch node may be bound to multiple addresses, but only
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publishes one. If not specified, this defaults to the "best" address from
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`network.bind_host`. By default, IPv4 addresses are preferred to IPv6, and
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ordinary addresses are preferred to site-local or link-local addresses.
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The `network.host` setting is a simple setting to automatically set both
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`network.bind_host` and `network.publish_host` to the same host value.
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Both settings allows to be configured with either explicit host address
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or host name. The settings also accept logical setting values explained
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in the following table:
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[cols="<,<",options="header",]
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|=======================================================================
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|Logical Host Setting Value |Description
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|`_local_` |Will be resolved to loopback addresses
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|`_local:ipv4_` |Will be resolved to loopback IPv4 addresses
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|`_local:ipv6_` |Will be resolved to loopback IPv6 addresses
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|`_non_loopback_` |Addresses of the first non loopback interface
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|`_non_loopback:ipv4_` |IPv4 addresses of the first non loopback interface
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|`_non_loopback:ipv6_` |IPv6 addresses of the first non loopback interface
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|`_[networkInterface]_` |Resolves to the addresses of the provided
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network interface. For example `_en0_`.
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|`_[networkInterface]:ipv4_` |Resolves to the ipv4 addresses of the
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provided network interface. For example `_en0:ipv4_`.
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|`_[networkInterface]:ipv6_` |Resolves to the ipv6 addresses of the
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provided network interface. For example `_en0:ipv6_`.
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|=======================================================================
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When the `discovery-ec2` plugin is installed, you can use
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{plugins}/discovery-ec2-discovery.html#discovery-ec2-network-host[ec2 specific host settings].
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[float]
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[[tcp-settings]]
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=== TCP Settings
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Any component that uses TCP (like the HTTP, Transport and Memcached)
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share the following allowed settings:
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[cols="<,<",options="header",]
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|=======================================================================
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|Setting |Description
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|`network.tcp.no_delay` |Enable or disable tcp no delay setting.
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Defaults to `true`.
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|`network.tcp.keep_alive` |Enable or disable tcp keep alive. Defaults
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to `true`.
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|`network.tcp.reuse_address` |Should an address be reused or not.
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Defaults to `true` on non-windows machines.
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|`network.tcp.send_buffer_size` |The size of the tcp send buffer size
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(in size setting format). By default not explicitly set.
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|`network.tcp.receive_buffer_size` |The size of the tcp receive buffer
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size (in size setting format). By default not explicitly set.
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|=======================================================================
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