We have set up the elastic APM for java services and able to monitor the services. As the development teams are using springboot logback logging mechanism (not 'Java ECS Logging'), the logs are coming as plain text. So we are forwarding the logs to elasticsearch through logstash.
With this configuration, the log correlation is not working. The trace id in the APM is not matching with the X-B3-TraceId provided in the logs.
Any idea on how can we make this work?