Multi-camera with Docker
--- For the moment this approach only works for IP cameras, we don't have a cross-platform method to inject a USB camera or Raspberry Pi camera ---
If you own multiple IP-cameras, then you probably don't want to setup a Raspberry Pi for each camera. Thanks to Docker there is an easier approach: instead of running multiple machines you can run multiple containers on a single machine. When you're processing a lot of cameras, you can distribute the cameras/containers across multiple machines by using Docker Swarm.
This is how it goes..
The approach is equal to the traditional Docker approach. First you need to make sure you have Docker installed on the machine(s) you prefer. After the installation you can use docker-compose to get Kerberos.io up and running. Create a docker-compose.yml file and add following configuration:
machinery: image: kerberos/machinery ports: - "8889" web: image: kerberos/web ports: - "80" volumes_from: - machinery links: - machinery
Instead of running docker-compose up, we add an additional parameter -p. This will create and link the containers from the compose file, but will wrap and isolate the containers in a project. By reusing this command, and defining different project names, you can run multiple Kerberos.io instances on the same machine (or distribute them over multiple machines). Suppose that we want to start three containers:
$ docker-compose -p camera-frontdoor up -d $ docker-compose -p camera-partyroom up -d $ docker-compose -p camera-garden up -d
If you type in the docker ps command, you'll get an overview of all the containers that are started; see a stripped output below. In the ports section you'll see the ports that have been exposed to access the web interface of each project.
$ docker ps CONTAINER ID IMAGE CREATED PORTS NAMES 30f74ea52852 kerberos/web 3 seconds ago 443/tcp, 0.0.0.0:32779->80/tcp cameragarden_web_1 873d6bae8ea1 kerberos/machinery 5 seconds ago 0.0.0.0:32778->8889/tcp cameragarden_machinery_1 439b3f7167fc kerberos/web 7 seconds ago 443/tcp, 0.0.0.0:32777->80/tcp camerapartyroom_web_1 9f8ed40c0d6e kerberos/machinery 9 seconds ago 0.0.0.0:32776->8889/tcp camerapartyroom_machinery_1 dc97a63ffc2d kerberos/web 22 seconds ago 443/tcp, 0.0.0.0:32775->80/tcp camerafrontdoor_web_1 1f3d6735405e kerberos/machinery 23 seconds ago 0.0.0.0:32774->8889/tcp camerafrontdoor_machinery_1
If we want to connect to the web interface of the cameragarden container, we can open our browser and enter the url http://your-ip:32779.