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RPC
HTTP RPC enables you to manage your Fluentd instance through HTTP endpoints. You can use this feature as a replacement of Unix signals.
It is especially useful for environments where signals are not supported well e.g. Windows. This requires Fluentd to start not with --no-supervisor command-line option.

Configuration

By default, HTTP RPC is not enabled. To use this feature, set the rpc_endpoint option:
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<system>
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rpc_endpoint 127.0.0.1:24444
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</system>
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Now, you can manage your Fluentd instance using an HTTP client:
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$ curl http://127.0.0.1:24444/api/plugins.flushBuffers
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{"ok":true}
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As evident from the output above, each endpoint returns a JSON object as its response.

HTTP Endpoints

Endpoint
Replacement of
Description
/api/processes.interruptWorkers
SIGINT
Stops the daemon.
/api/processes.killWorkers
SIGTERM
Stops the daemon.
/api/processes.flushBuffersAndKillWorkers
SIGUSR1 and SIGTERM
Flushes buffer and stops the daemon.
/api/plugins.flushBuffers
SIGUSR1
Flushes the buffered messages.
/api/config.gracefulReload
SIGUSR2
Reloads configuration.
/api/config.reload
SIGHUP
Reloads configuration.
If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is an open-source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.
Last modified 15d ago