Troubleshooting Driver Failure and Container Process Initialization Errors in Nomad Jobs for Exec Driver

Driver Failure: failed to launch command with executor: rpc error: code = Unknown desc = unable to start container process: error during container init: read init-p: connection reset by peer

The error indicates that the command intended for execution within the container failed to launch due to an unspecified Remote Procedure Call (RPC) error. This issue occurred during the container's initialization phase and involved a network-related problem where the connection was unexpectedly closed by the peer.

Reproduction steps: Implement the reproduction scenario's actual and expected behavior, and test it across various versions of RHEL and Nomad.

Step 1: Create a job file with the name httpd.hcl.

job "httpd" {
group "httpd" {

task "httpd" {
driver = "exec"

config {
command = "bash"
args = ["-c", "while true; do sleep 500; done"]
}
}
}
}

Step 2: Run the Nomad job using the below command.

nomad job run httpd.hcl

Step 3: Check the status of the Nomad job from the Nomad UI or using the below command on CLI.

nomad job status httpd

Job Failure screenshot from UI:

Job successfully running screenshot:

Actual behavior:

Run the nomad file and it throws the below error of exec driver failure.

Error message:

Driver Failure: failed to launch command with executor: rpc error: code = Unknown desc = unable to start container process: error during container init: read init-p: connection reset by peer

Expected behavior:

The job will run without any errors.