pramaneni – Best DevOps

What is the difference between docker exec and attach?

pramaneni — Mon, 29 Aug 2022 16:12:59 +0000

Docker exec: it is basically use to run a command in a running container

docker exec [OPTIONS] CONTAINER COMMAND [ARG…]

Docker attach: Attach local standard input, output, and error streams to a running container

docker attach [OPTIONS] CONTAINER

What is the difference between docker stop and kill?

pramaneni — Mon, 29 Aug 2022 16:08:15 +0000

Docker stop : Stop one or more running containers

docker stop [OPTIONS] CONTAINER [CONTAINER…]

Docker kill: kill the container which sends signals

docker kill [OPTIONS] CONTAINER [CONTAINER…]

What is the difference between docker pause and unpause ?

pramaneni — Mon, 29 Aug 2022 16:01:07 +0000

Docker Pause: Pause all processes within one or more containers

docker pause CONTAINER [CONTAINER…]

Docker Unpause: Unpause all processes within one or more containers

docker unpause CONTAINER [CONTAINER…]

Components of Docker and its Brief Summary

pramaneni — Mon, 29 Aug 2022 15:51:54 +0000

the four main components of docker are:

Docker client and server
Docker image
Docker registry
Docker container

Docker client and server: The communication between the Docker client and the Docker host is via a REST API.

Docker image: A Docker image is a template that contains instructions for the Docker container. That template is written in a language called YAML, which stands for Yet Another Markup Language.

Docker registry: The Docker registry is where you would host various types of images and where you would distribute the images from.

Docker container: A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing.