Docker images for Packetbeat are available from the Elastic Docker
registry. You can retrieve an image with a
docker pull command.
docker pull docker.elastic.co/beats/packetbeat:6.1.4
Configure Packetbeat on Dockeredit
The Docker image provides several methods for configuring Packetbeat. The conventional approach is to provide a configuration file via a bind-mounted volume, but it’s also possible to create a custom image with your configuration included.
One way to configure Packetbeat on Docker is to provide
packetbeat.yml via bind-mounting.
docker run, the bind-mount can be specified like this:
docker run \ -v ~/packetbeat.yml:/usr/share/packetbeat/packetbeat.yml \ docker.elastic.co/beats/packetbeat:6.1.4
Custom image configurationedit
It’s possible to embed your Packetbeat configuration in a custom image. Here is an example Dockerfile to achieve this:
FROM docker.elastic.co/beats/packetbeat:6.1.4 COPY packetbeat.yml /usr/share/packetbeat/packetbeat.yml USER root RUN chown packetbeat /usr/share/packetbeat/packetbeat.yml USER packetbeat
Required network capabilitiesedit
Under Docker, Packetbeat runs as a non-root user, but requires some privileged
network capabilities to operate correctly. Ensure that the
capability is available to the container.
docker run --cap-add=NET_ADMIN docker.elastic.co/beats/packetbeat:6.1.4
Capture traffic from the host systemedit
By default, Docker networking will connect the Packetbeat container to an
isolated virtual network, with a limited view of network traffic. You may wish
to connect the container directly to the host network in order to see traffic
destined for, and originating from, the host system. With
docker run, this can
be achieved by specifying
docker run --cap-add=NET_ADMIN --network=host docker.elastic.co/beats/packetbeat:6.1.4
On Windows and MacOS, specifying
--network=host will bind the
container’s network interface to the virtual interface of Docker’s embedded
Linux virtual machine, not to the physical interface of the host system.