Launching Docker demon from Java Service

Trying to launch a docker container in demon mode using shell script from java service deployed on Tomcat, on an ubunty based VM.

I have a java based REST service which has been deployed on tomcat, on the same VM i have installed Docker. I have created a shell file to launch my docker container. When execute this shell file from terminal it works perfectly fine. Although when i execute this shell file from java somehow it doesnt give any error and doesnt execute the docker command inside the shell file.

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    Shell File Code snippet.(for testing currently have given Executed permission to all users using chmod 777)

    echo First Parameter is $1
    echo Second Parameter is $2
    echo Third Parameter is $3
    sudo docker run -d -e PARAM1=$1 -e PARAM2=$2 -e PARAM3=$3 --name=$1 <docker_iamge_name>

    Java Codesnippet for calling the script file (note this is not a standalone java class I am using this code snippet inside on Java based REST service which is deployed on Tomcat)

    String command[];
    command = new String[] {"/home/launcher/","Param1","Param2", "Param3"};
    Process process = Runtime.getRuntime().exec(command);

    On Executing the above javascript in the Tomcat sdtout logs get the following

    First Parameter is Param1
    Second Parameter is Param2
    Third Parameter is Param3

    Post which if I check the docker ps -a, I dont see the container getting launched.

    Thanks for Response.

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  • One Solution collect form web for “Launching Docker demon from Java Service”

    I think your problem is that you are trying to use sudo in your

    To understand what really has happened with a spawned process, you need to read both process.getInputStream() and process.getErrorStream(). The last one will show you exact error (if there was any).

    In your case you should get something like:

    sudo: no tty present and no askpass program specified

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