docker-logstash-forwarder

Lean (16MB) logstash-forwarder Docker image.

Here you will find a Dockerfile for assembling a logstash-forwarder container that communicates with logstash server over secure Lumberjack protocol. This could be the base for all your Docker images that need logstash-forwarder.

runit will make sure that your service runs on container start-up and supervises it. In case the service dies, runit brings it back to life.

The image is available at quay.io/pires.

Disclaimers

1. runit is installed from edge packages.
2. logstash-forwarder binary is available in binaries folder. Script to build said binary is also included.

Pre-requisites

• Docker 1.6.2 or newer
• User account with permissions to run Docker client

Run it

docker run --rm \
    --volume /path/to/config:/logstash-forwarder/config \
    --volume /path/to/certs:/logstash-forwarder/certs \
    quay.io/pires/docker-logstash-forwarder:0.4

Build logstash-forwarder

The following command will clone logstash-forwarder repo, build logstash-forwarder and copy the resulting binary to binaries folder.

ATTENTION: The images currently available have support for multiple certificates in the SSL CA chain. This is not supported by the aforementioned build script.

./build_binaries.sh

Now, you just need to rebuild the image.

SSL self-signed certificates

• logstash - needs certificate and key
• logstash-forwarder - needs bundle ca certificate (which must include root ca certificate)

openssl req -x509 -nodes -newkey rsa:2048 -keyout logstash-forwarder.key -out logstash-forwarder.crt

Be sure to set a CN that corresponds to a hostname resolvable by your hosts.