dimanche 13 avril 2014

Managing Docker images and containers

In addition to managing Docker resources (including containers, images, hosts) through the official CLI, there is plenty of solutions available in the community to manage Docker resources in a comprehensive way from a single web-based interface.


Once our containers are running, DockerUI can be use to manage the overall system. It's a simple web app with basic features for:
 - Check the states of the images (running, stopped)
 - Remove images
 - Start, Stop, Kill and Remove containers

DockerUI can be used with the following commands

1. Building the web app from the github repository and tag the build image
$docker build -t crosbymichael/dockerui github.com/crosbymichael/dockerui

2. Launch the built container, make the web app available on the 9000 port and connect to the docker uinx socket to remotely control docker
$docker run -p 9000:9000 -v /var/run/docker.sock:/docker.sock crosbymichael/dockerui -e /docker.sock

Then on the browser, visit localhot:9000 to get something like:


Shipyard is a more advanced Docker management solution based on a client-server architecture where the agents (i.e. clients) collect information on Docker resources and report them to the Shipyard server. It providers in addition to the features available in DockerUI:
 - Authentication
 - Building new images by uploading local Dockerfile or providing URLs to a remote location
 - In the browser terminal emulation for attaching containers
 - Visualizing CPU and memory utilization of the running images
 - ...

1. To use Shipyard, issue to pull the image from the Docker public index:
$docker run -i -t -v /var/run/docker.sock:/docker.sock shipyard/deploy setup

Now, we can register as admin to Shipyard on http://localhost:8000/

2. Install the latest release (e.g. v0.2.5) of Shipyard agent on every hosts to collect the information on Docker resources:
$curl https://github.com/shipyard/shipyard-agent/releases/download/v0.2.5/shipyard-agent -L -o /usr/local/bin/shipyard-agent
$chmod +x /usr/local/bin/shipyard-agent

3. Run the agent and register to the main host where Shipyard is running
$/usr/local/bin/shipyard-agent -url http://localhost:8000 -register

4. On the Shipyard interface, authorize the agents already deployed to enable them.
5. Run the agent with the given key at registration:
$/usr/local/bin/shipyard-agent -url http://localhost:8000 -key agent_key

Troubleshooting, in case you get this message:
Error requesting images from Docker: Get
Then stop the Docker service and re-start it while enabling Remote API access for any IP address:
$sudo service docker stop
$docker -H tcp:// -H unix:///var/run/docker.sock -d &

happy dockering

Aucun commentaire:

Enregistrer un commentaire