Using the Pre-Built MapR Installer Container Images

This section describes how to obtain and run the pre-built MapR Installer container images.

Pre-built MapR Installer 1.6 container images are available on Docker hub. Images are available for:
  • Ubuntu 16.04
  • Ubuntu 14.04
  • CentOS 7
  • CentOS 6
The pre-built images are about 200 MB. A sample-run script that you can use to start the container is available on GitHub.
To use a pre-built image:
  1. Download the pre-built MapR Installer container image and the sample-run script to a Linux or Mac OS X platform where Docker 1.12.5 or later is installed and the Docker daemon is up and running.
  2. (Optional) Edit the mapr-docker-installer.sh script file if you want to change any environmental variables. For more information about the environmental variables, see Environmental Variables for the MapR Installer Container.
  3. Run the mapr-docker-installer.sh file to start mapr-installer services:
    $ ./docker_images/installer/mapr-docker-installer.sh

    After the installer service is started, you can issue Stanza commands or open the web-based MapR Installer in a browser:

    installer (380) started with log /opt/mapr/installer/logs/installer.log
    Started service mapr-installer
    
    ...Success
    
        To continue installing MapR software, open the following URL in a web browser
    
                  If the address '172.17.0.2' is internal and not accessible
               from your browser, use the external address mapped to it instead
    
                                  https://172.17.0.2:9443
     
    The MapR Installer maintains the state of the cluster. When the installer is run from a container, the installer database is only as persistent as the container itself. If you need the installer data to be persistent, here are some options:
    • If you shut down a MapR Installer container, use the docker start command (not the docker run command) to restart the same instance of the container. If you create a new instance of the container, the database will have no information.
    • Mount the /opt/mapr/ data directory outside the container to persistent storage to maintain the cluster state.
    • Use the Stanza export command to export the state of the cluster before you shut down the container. See Exporting a Cluster Configuration.