Remotely login and exec command in container through websocket

[supereagle]

On Docker host, we can run docker exec -it ${CONTAINER_ID/CONTAINER_NAME} ${COMMAND} to login and exec command in containers.

On Kubernetes master, we can run kubectl exec -it ${POD_NAME} ${COMMAND} to login and exec command in the container of the pod. If there are multiple containers of the pod, can run the command in specified container.

Both of these two ways are inconvenient and unsecured, as they need to login the Docker host or Kubernetes master, and have the permission to run some other dangerous commands.

A better way is to login and run command in container through websocket.

Reference

• LAIN 平台远程进入容器功能设计与实现
• GoTTY: Share your terminal as a web application
• GoTTY Client: Terminal client for GoTTY
• 使用 Tornado 实现 Docker 容器的 exec

[supereagle]

I have implemented this feature in the open project DockerTTY, which is based on the work of GoTTY.