Arquitectura de Docker. Imágenes, Containers y Daemons
Componentes:
Docker consta de:
El Docker Host que es el orquestador de los contenedores.
Docker Daemon: Es la interfaz que permite la comunicación con el orquestador
Imágenes: Son componentes de solo lectura. Los contenedores son instancias de estas imágenes.
Un simil en programación sería Clase y Objeto.
Docker Client: Es el gestor de comandos que hace peticiones REST al Daemon. (pull, push, run, ...)
docker run docker/whalesay cowsay Hello there!
Algunos comandos:
attach Attach local standard input, output, and error streams to a running container
build Build an image from a Dockerfile
commit Create a new image from a container's changes
cp Copy files/folders between a container and the local filesystem
create Create a new container
diff Inspect changes to files or directories on a container's filesystem
events Get real time events from the server
exec Run a command in a running container
export Export a container's filesystem as a tar archive
history Show the history of an image
images List images
import Import the contents from a tarball to create a filesystem image
info Display system-wide information
inspect Return low-level information on Docker objects
kill Kill one or more running containers
load Load an image from a tar archive or STDIN
login Log in to a Docker registry
logout Log out from a Docker registry
logs Fetch the logs of a container
pause Pause all processes within one or more containers
port List port mappings or a specific mapping for the container
ps List containers
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rename Rename a container
restart Restart one or more containers
rm Remove one or more containers
rmi Remove one or more images
run Run a command in a new container
save Save one or more images to a tar archive (streamed to STDOUT by default)
search Search the Docker Hub for images
start Start one or more stopped containers
stats Display a live stream of container(s) resource usage statistics
stop Stop one or more running containers
tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
top Display the running processes of a container
unpause Unpause all processes within one or more containers
update Update configuration of one or more containers
version Show the Docker version information
wait Block until one or more containers stop, then print their exit codes
Autor: Eduardo A. F.
Publicado: 19-09-2020 00:00
Actualizado: 20-09-2020 13:04