Editing Containerd-shim

 containerd-shim -namespace moby



== See also ==
* {{containerd}}
* {{docker}}



[[Category:containers]]
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   containerd-shim -namespace moby
-http://alexander.holbreich.org/docker-components-explained/
-The shim allows for daemonless containers. According to Michael Crosby it's basically sits as the parent of the container's process to facilitate a few things.
-First it allows the runtimes, i.e. runc,to exit after it starts the container. This way we don't have to have the long running runtime processes for containers.
-Second it keeps the STDIO and other fds open for the container in case containerd and/or docker both die. If the shim was not running then the parent side of the pipes or the TTY master would be closed and the container would exit.
-Finally it allows the container's exit status to be reported back to a higher level tool like docker without having the be the actual parent of the container's process and do a wait4.