Use multiple services within one container (Tomcat, Filebeat)

General
1

Hi,

I would like to Dockerize my Java Web Application which runs within a Tomcat Server. In my current setup I run this on a Debian Buster with OpenJDK14. To collect my logs I use Filebeat with shipment to a Elasticsearch cluster.

What would be the best way to build this within docker? I would start using the image “tomcat:9.0-jdk14-openjdk-buster” as FROM within the Dockerfile. But how do I add additional services like filebeat which needs to access the log files generated by tomcat?

Thanks in advance!

2

docker moto is “one service is one container”. So Filebeat should be running in a dedicated container (in the kubernetes world, we talk about “sidecar”).
Then all you need is a shared volume between the 2 containers so your java apps can write its log there and Filebeat will consume the file from there.