[YARN-5394] Remove bind-mount /etc/passwd for Docker containers

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: yarn
• Labels: Docker
• Hadoop Flags: Reviewed
• Assignee: Zhankun Tang
• Reporter: Zhankun Tang
• Created: 18/Jul/16 03:30
• Updated: 02/May/18 22:34
• Resolved: 09/Aug/16 10:39

Description

Current LCE (DockerLinuxContainerRuntime) is mounting /etc/passwd to the container. And it seems uses wrong file name "/etc/password" for container.

.addMountLocation("/etc/passwd", "/etc/password:ro");

The biggest issue of bind-mount /etc/passwd is that it overrides the users defined in Docker image which is not expected. Remove it won't affect existing use cases.