create_image_for_runimage.rst

How to prepare a image for runimage in chain

• The things needed

  • The pkgs, scripts or other files that you needed
  • The runme.sh script that you create to operate the needed files

• The steps to generate the image

  • create a directory under /install or any other directory that can be accessed with http.
  • modify the permission for runme.sh to make sure it is able to be executed
  • copy or move the needed files and runme.sh to the created directory
  • go to the directory and run tar -zcvf <image> .

• Example

  In the example, it shows how to install an independent pkg a.rpm

  • Create the directory for the image: :

    mkdir -p /install/my_image

  • Go to the direcotry and copy the rpm file into it: :

    cd /install/my_image
    cp /tmp/a.rpm /install/my_image

  • Write the runme.sh script and modify the permission: :

    cat runme.sh
    echo "start installing a.rpm"
    rpm -ivh a.rpm  

  • modify the runme.sh script permission: :

    chmod +x runme.sh

  • Create the tar ball for the directory: :

    tar -zcvf my_image.tgz .