Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
doc:docker:dev [2014/09/02 07:30] – [Starting a user container that includes the data volumes] admindoc:docker:dev [2015/03/31 12:51] (current) – [Sharing images via Docker hub] daniel86
Line 1: Line 1:
-====== KnowRob & Docker --- developer documentation ======+====== KnowRob & Docker -- developer documentation ====== 
 + 
 +This page lists information for developers that would like to modify, update and develop the docker images. If you would only like to start the existing docker containers, please have a look [[/doc/docker|here]]. 
  
 ===== Building Docker images===== ===== Building Docker images=====
Line 5: Line 8:
 The Dockerfiles for the KnowRob containers can be found in this repository: https://github.com/knowrob/docker. You can build docker images from them using The Dockerfiles for the KnowRob containers can be found in this repository: https://github.com/knowrob/docker. You can build docker images from them using
 <code bash> <code bash>
-  cd ~/docker/knowrob-daemon +cd ~/docker/hydro-knowrob/hydro-knowrob-base 
-  docker build -t knowrob/hydro-knowrob-daemon .+docker build -t knowrob/hydro-knowrob-base . 
 + 
 +cd ~/docker/hydro-knowrob/hydro-knowrob-daemon 
 +docker build -t knowrob/hydro-knowrob-daemon .
  
-  cd ~/docker/knowrob-interactive +cd ~/docker/hydro-knowrob/hydro-knowrob-interactive 
-  docker build -t knowrob/hydro-knowrob-interactive .+docker build -t knowrob/hydro-knowrob-interactive .
  
-  cd ~/docker/webapp +cd ~/docker/webapps/easeapp 
-  docker build -t knowrob/webrob .+docker build -t openease/easeapp . 
 + 
 +cd ~/docker/webapps/login 
 +docker build -t openease/login . 
 + 
 +cd ~/docker/webapps/knowrob 
 +docker build -t openease/knowrob .
 </code> </code>
  
 You can tag a version of an image using You can tag a version of an image using
-  docker tag 18df3323a0d8 knowrob/webrob:0.1.0+  docker tag 18df3323a0d8 openease/knowrob:0.1.0
  
 ===== Sharing images via Docker hub ===== ===== Sharing images via Docker hub =====
Line 25: Line 37:
   docker push knowrob/hydro-knowrob-daemon   docker push knowrob/hydro-knowrob-daemon
  
-  # download images (this can also be done with the 'update-images' script)+  # download images (this can also be done with the 'update-containers' script)
   docker pull knowrob/hydro-knowrob-daemon   docker pull knowrob/hydro-knowrob-daemon
-  docker pull knowrob/webrob 
   docker pull knowrob/knowrob_data   docker pull knowrob/knowrob_data
   docker pull knowrob/user_data   docker pull knowrob/user_data
 +  docker pull openease/easeapp
 +  [...]
 </code> </code>
  
Line 45: Line 58:
   docker run -t -P -d knowrob/hydro-knowrob-daemon   docker run -t -P -d knowrob/hydro-knowrob-daemon
 </code> </code>
- 
-==== Web application ==== 
- 
-The web app needs access to the Docker socket, so you have to start it like this: 
-  docker run --rm -i -p 5000:5000 -v /var/run/docker.sock:/var/run/docker.sock knowrob/webrob python webrob.py 
- 
-You can then access the Web interface at http://localhost:5000 
  
  
Line 81: Line 87:
 Docker containers are cheap and usually short-lived, i.e. they can easily be started, stopped, removed and updated. The problem is how to store persistent data such as the content of a database or user-specific files. The approach we use are [[https://docs.docker.com/userguide/dockervolumes/#creating-and-mounting-a-data-volume-container|data-only containers]] -- normal containers that contain nothing but a data volume that can be mounted by the other containers that provide the applications. These data-only containers shall not be removed, but can persist over longer time, also if the application containers get updated. Docker containers are cheap and usually short-lived, i.e. they can easily be started, stopped, removed and updated. The problem is how to store persistent data such as the content of a database or user-specific files. The approach we use are [[https://docs.docker.com/userguide/dockervolumes/#creating-and-mounting-a-data-volume-container|data-only containers]] -- normal containers that contain nothing but a data volume that can be mounted by the other containers that provide the applications. These data-only containers shall not be removed, but can persist over longer time, also if the application containers get updated.
  
-In the KnowRob use case, there is one container per user (called <user>_data), and another one for common data (called knowrob_data). The user container will serve as sandbox in which users can store their files, the knowrob_data container will provide commonly used data sets. The common data container knowrob_data is [[https://docs.docker.com/userguide/dockerrepos/#automated-builds|auto-built]] on [[https://hub.docker.com/|DockerHub]] from the [[https://github.com/knowrob/knowrob_data|knowrob_data]] GithHub repository. +In the KnowRob use case, there is one container for user data (called user_data), and another one for common data (called knowrob_data). The user container will serve as sandbox in which users can store their files, the knowrob_data container will provide commonly used data sets. The common data container knowrob_data is [[https://docs.docker.com/userguide/dockerrepos/#automated-builds|auto-built]] on [[https://hub.docker.com/|DockerHub]] from the [[https://github.com/knowrob/knowrob_data|knowrob_data]] GithHub repository.
- +
- +
-==== Creating the user data containers ==== +
-The user containers are built from the user_data Dockerfile. It basically just creates a user 'ros' in order to set the permissions correctly and creates the directory '/home/ros/sandbox'. The following commands build a Docker image from this Dockerfile (needs to be done only when the Dockerfile gets updated) and start a container, in this case for the user 'demo'. +
- +
-<code bash> +
-  cd docker/user-sandbox +
-  docker build -t knowrob/user_data . +
-  docker run --name demo_data knowrob/user_data true +
-</code>+
  
  
Line 109: Line 105:
 <code bash> <code bash>
   # interactive mode   # interactive mode
-  docker run -t -P -i \+  docker run -t -P -i --rm \
              --volumes-from knowrob_data \              --volumes-from knowrob_data \
-             --volumes-from demo_data \+             --volumes-from user_data \
              --name demo \              --name demo \
-             --link mongo_db \+             --link mongo_db:mongo \
              knowrob/hydro-knowrob-interactive \              knowrob/hydro-knowrob-interactive \
              /bin/bash              /bin/bash
      
   # daemon mode   # daemon mode
-  docker run -t -P -d \+  docker run -t -P -d --rm\
              --volumes-from knowrob_data \              --volumes-from knowrob_data \
-             --volumes-from demo_data \+             --volumes-from user_data \
              --name demo \              --name demo \
-             --link mongo_db \+             --link mongo_db:mongo \
              knowrob/hydro-knowrob-daemon              knowrob/hydro-knowrob-daemon
   </code>   </code>
-These examples are for the user 'demo', so 'demo' and 'demo_data' have to be replaced with the respective username.+These examples are for the user 'demo', so 'demo' has to be replaced with the respective username.