Chris Smith 7dd94bf61a Listen for new containers being added. | 8 years ago | |
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Dockerfile | 8 years ago | |
README.md | 8 years ago | |
report.py | 8 years ago |
This is a small python script that will discover all running docker containers and store information about them in etcd.
Having service details in shared storage such as etcd allows other processes to discover services, or automate configuration or administration tasks (such as configuring reverse proxies).
The container requires access to the docker API, so you need to volume mount the docker socket:
docker run -d --name service-reporter \
--restart always \
-v /var/run/docker.sock:/var/run/docker.sock \
csmith/service-reporter:latest \
--arguments
The following command line arguments are available:
--etcd-host (default: etcd) hostname where ectd is running
--etcd-port (default: 2379) port to connect to ectd on
--etcd-prefix (default: /docker) prefix to write keys to
--name (default: docker) name of the host running docker
The script stores values relating to containers, labels, and networks in etcd:
/docker/containers/{name}/image = "ubuntu:xenial"
/labels/service = "foo"
/labels/org.example.some-label = "bar"
/net/addr/{network1} = "172.1.2.3"
/{network2} = "172.0.2.3"
/ports/tcp/{container_port1} = {host_port}
/{container_port2} = 0 # Not exposed
/udp/...
/docker/labels/{label_1}/{container_name_1} = "foo"
/{container_name_2} = "bar"
/{label_2}/...
/docker/networks/{network1}/{container_name_1} = "172.1.2.3"
/{container_name_2} = "172.0.2.3"
/{network2}/...