[YARN-8783] Improve the documentation for the docker.trusted.registries configuration

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.1
• Fix Version/s: 3.3.0
• Labels: Docker container-executor docker
• Assignee: Eric Yang
• Reporter: Simon Prewo
• Created: 17/Sep/18 15:43
• Updated: 04/Jun/19 15:02
• Resolved: 26/Feb/19 18:21

Description

I am deploying the default yarn distributed shell example:

yarn jar hadoop-yarn-applications-distributedshell.jar -shell_env YARN_CONTAINER_RUNTIME_TYPE=docker -shell_env YARN_CONTAINER_RUNTIME_DOCKER_IMAGE=centos -shell_command "sleep 90" -jar hadoop-yarn-applications-distributedshell.jar -num_containers 1

Having a single trusted registry configured like this works:

docker.trusted.registries=centos

But having a list of trusted registries configured fails ("Shell error output: image: centos is not trusted."):

docker.trusted.registries=centos,ubuntu