Fluent Bit is a lightweight and high-performance log processor and forwarder. It is designed to collect data from various sources, process it, and deliver it to multiple destinations. Fluent Bit is part of the Fluentd ecosystem and is often used in environments where resource efficiency is crucial, such as IoT devices and cloud-native applications.
One common issue users encounter is Fluent Bit not respecting retry settings. This symptom is observed when Fluent Bit fails to retry sending logs to the destination after a failure, leading to potential data loss or incomplete log delivery.
Fluent Bit's retry mechanism is designed to handle temporary failures in log delivery. When a log delivery fails, Fluent Bit should attempt to resend the logs based on the configured retry settings. If these settings are not correctly configured, Fluent Bit may ignore them, resulting in the observed symptom.
Misconfigurations often occur in the [OUTPUT]
section of the Fluent Bit configuration file. Parameters such as Retry_Limit
and Retry_Interval
must be set correctly to ensure Fluent Bit respects the retry logic.
Begin by checking the Fluent Bit configuration file, typically named fluent-bit.conf
. Locate the [OUTPUT]
section for the destination where retries are not being respected. Ensure that the following parameters are correctly set:
[OUTPUT]
Name your_output_plugin
Match *
Retry_Limit 5
Retry_Interval 5
The Retry_Limit
specifies the maximum number of retries, and Retry_Interval
defines the interval between retries in seconds.
If the settings are incorrect or missing, adjust them to suit your needs. For example, if you want Fluent Bit to retry 10 times with a 10-second interval, update the configuration as follows:
[OUTPUT]
Name your_output_plugin
Match *
Retry_Limit 10
Retry_Interval 10
After making changes to the configuration file, restart Fluent Bit to apply the new settings. Use the following command to restart the Fluent Bit service:
sudo systemctl restart fluent-bit
For more information on managing Fluent Bit services, refer to the official Fluent Bit documentation.
By ensuring that your retry settings are correctly configured, you can prevent Fluent Bit from ignoring retries and ensure reliable log delivery. For further reading on Fluent Bit configuration, visit the Fluent Bit Configuration Guide.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)