​Logging

Configure the logging of your Kestra cluster.

You can change the log behavior in Kestra by adjusting the following configuration parameters:

Configure the log level

logger:
  levels:
    io.kestra.runner: TRACE
    org.elasticsearch.client: TRACE
    org.elasticsearch.client.sniffer: TRACE
    org.apache.kafka: DEBUG
    io.netty.handler.logging: TRACE

kestra.server.access-log: Access Log configuration

• kestra.server.access-log.enabled: enable access log from webserver (default true).
• kestra.server.access-log.name: logger name (default io.kestra.webserver.access).
• kestra.server.access-log.format: access log format (default [Date: {}] [Duration: {} ms] [Method: {}] [Url: {}] [Status: {}] [Length: {}] [Ip: {}] [Port: {}]).
• kestra.server.access-log.filters: list of regexp to define which log to include, use .* to enable all logs (default - ".*\\[Url: /api/.*").

Here is the default values:

kestra:
  server:
    access-log:
      enabled: true
      name: io.kestra.webserver.access
      format: "[Date: {}] [Duration: {} ms] [Method: {}] [Url: {}] [Status: {}] [Length: {}] [Ip: {}] [Port: {}]"
      filters:
        - ".*\\[Url: /api/.*"

Log Format

We are using Logback to handle log. You change the format of the log format, and we provide some default and common one configuring a logback configuration files.

If you want to customize the log format, you can create a logback.xml file and add it to the classpath. Then, add a new JAVA_OPTS environment variable: "-Dlogback.configurationFile=file:/path/to/your/configuration/logback.xml"

We provide some predefined configuration, and some example of the logback.xml files:

GCP

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false">
    <include resource="logback/base.xml" />
    <include resource="logback/gcp.xml" />

    <root level="WARN">
        <appender-ref ref="CONSOLE_JSON_OUT" />
        <appender-ref ref="CONSOLE_JSON_ERR" />
    </root>
</configuration>

Elastic Common Schema (ECS) format

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
  <include resource="logback/base.xml" />
  <include resource="logback/ecs.xml" />

  <root level="WARN">
    <appender-ref ref="CONSOLE_ECS_OUT" />
    <appender-ref ref="CONSOLE_ECS_ERR" />
  </root>
</configuration>