Running Packetbeat on Dockeredit
Docker images for Packetbeat are available from the Elastic Docker registry. The base image is centos:7.
A list of all published Docker images and tags is available at www.docker.elastic.co. The source code is in GitHub.
These images are free to use under the Elastic license. They contain open source and free commercial features and access to paid commercial features. Start a 30-day trial to try out all of the paid commercial features. See the Subscriptions page for information about Elastic license levels.
Pulling the imageedit
Obtaining Beats for Docker is as simple as issuing a docker pull command
against the Elastic Docker registry.
docker pull docker.elastic.co/beats/packetbeat:6.3.2
Alternatively, you can download other Docker images that contain only features available under the Apache 2.0 license. To download the images, go to www.docker.elastic.co.
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 mount, but it’s also possible to create a custom image with your configuration included.
Bind-mounted configurationedit
One way to configure Packetbeat on Docker is to provide packetbeat.yml via a bind mount.
With docker run, the bind mount can be specified like this:
docker run \ --mount type=bind,source="$(pwd)"/packetbeat.yml,target=/usr/share/packetbeat/packetbeat.yml \ docker.elastic.co/beats/packetbeat:6.3.2
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:6.3.2 COPY packetbeat.yml /usr/share/packetbeat/packetbeat.yml USER root RUN chown root: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 NET_ADMIN
capability is available to the container.
docker run --cap-add=NET_ADMIN docker.elastic.co/beats/packetbeat:6.3.2
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 --network=host.
docker run --cap-add=NET_ADMIN --network=host docker.elastic.co/beats/packetbeat:6.3.2
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.