out_forwardBuffered Output plugin forwards events to other fluentd nodes. This plugin supports load-balancing and automatic fail-over (a.k.a. active-active backup). For replication, please use the out_copy plugin.
out_forwardplugin detects server faults using a "φ accrual failure detector" algorithm. You can customize the parameters of the algorithm. When a server fault recovers, the plugin makes the server available automatically after a few seconds.
out_forwardplugin supports at-most-once and at-least-once semantics. The default is at-most-once. Do NOT use this plugin for inter-DC or public internet data transfer without secure connections. All the data is not encrypted, and this plugin is not designed for high-latency network environment. If you require a secure connection between nodes, please consider using in_secure_forward.
out_forwardis included in Fluentd's core. No additional installation process is required.
false. standby servers will be selected when all non-standby
true. The default is 190. This default value is based on popular tcp_syn_retries.
0, this plugin doesn't wait the ack response.
out_forwardplugin until then.
retry_limitparameter for details), the sleep interval can be up to approximately 131072 seconds (roughly 36 hours) in the default configurations.
retry_limitis ignored and there is no limit). The default values are 17 and false (not disabled). If the limit is reached, buffered data is discarded and the retry interval is reset to its initial value (
20.0seconds. Note that parameter type is
log_leveloption allows the user to set different levels of logging for each plugin. The supported log levels are: