Docker basic Commands

Common commands can be divided into the following types

1. Container life Cycle Management # Docker [Run|start|stop|restart|kill|rm|pause|unpause]

2. Container Operation Ops # Docker [Ps|inspect|top|attach|events|logs|wait|export|port]

3. Container rootfs Command # docker [Commit|cp|diff]

4. Mirrored warehouse # docker [Login|pull|push|search]

5. Local image Management # Docker [Images|rmi|tag|build|history|save|import]

6. Other commands # Docker [Info|version]

Image related Operations Command:

There are three ways to create a mirror

Create a container based on an existing mirror

Import based on local template

Create based on Dockerfile file

Commit to regenerate a new image based on a container that already has an image

# docker commit [OPTIONS] CONTAINER [Repository[:tag]]

-M,--message= "" Submit information to describe the content for mirroring

-A,--author= "" Author info

-P,--suspend container run when Pause=true commits

My_container:1 is the name and version of the submitted image

# docker Commit-m "Centos7 x64 first Image"-a "Loren" 33d619155d03 my_centos7:1

Import imports a container snapshot based on the local template, importing a container snapshot file into the local

# Cat Centos.tar | Docker import-test/centos:v1.0

Build creates a new image based on the Dockerfile file

# docker build [OPTIONS] PATH | URL | -

-T set the image name and its identification number

-F,--file=dockerfile specify Dockerfile file path

# docker Build-t Test:2-f/opt/

Search Image_name searching for Image in Docker index

--automated=false

-S N,--stars=0 specifies an image that evaluates to more than N stars

# Docker Search CENTOS6

Pull image_name from Docker Register Server drop-down Image or repository

# Docker Pull CentOS

# Docker Pull Centos:centos6

# Docker pull dl.dockerpool.com:5050/centos:6.8 specified website download

Push pushes an image or repository to registry

Before uploading, you should change the uploaded image's tag to hup username/image Name: Tag

Like # docker tag Centos6.8:v1 644597521/centos6.8:v1

Images show list of all mirrors on-premises

RMI deletes the mirror of the specified ID

Tag Modify image name

# Docker Tag Test:1 my_image:v2 modify the test mark to 1 with a name of my_image tag number of V2

Save image to local file

Usage:docker save [OPTIONS] image [Image ...]

-O,--output= ""

# docker Save-o Centos_6.4.tar centos6.4:v1 # Export local centos6.4:v1 image as Centos_6.4.tar file

Load imports local files into the local mirror library

Usage:docker load [OPTIONS]

-I,--input= ""

# Docker Load < Centos_6.4.tar # import Centos_6.4.tar files into the local mirror list

Inspect displays information about the image or container. Returns the JSON format information, if only one of the contents, you can use the-F to specify

Container Common Operations Command:

Run a new container

# usage:docker Run [OPTIONS] IMAGE [COMMAND] [ARG ...]

-A,--attack

-i,--interactive=false runs the container in interactive mode, usually with the-t collocation

-T,--Tty=false Assigning a pseudo-input terminal

-D Background Run

-P allows external access to all open ports on the container

-P port mapping-p 80:80

--name Specify the name of the container after launch

# docker Run-i-T CentOS

# docker Run-i-t-d Centos/bin/bash

# docker Run-i-t-d--name My_container Centos/bin/bash

# docker Run-i-t-d-P 80:80--name My_container Centos/bin/bash

-V,--volume=[] Create a data volume

/mnt creating a data volume in a container

/webapp:/src/webapp directory mount. Mount the local WebApp directory to the container's/src/webapp. Both the container and the host's Mount directory will change at the same time

/test.txt:/tmp/text.txt file mount. Mount the local/test.txt file to the/tmp/text.txt of the container (note that only the files within the container mount are modified, otherwise not synchronized)

# docker Run-ti-v/da--name=dbdata CentOS Create a container dbdata and create a data Volume Mount container dbdata the/da directory

--volume-from Sharing mounted data volumes

# docker Run-ti-v/mnt--name db CentOS Create a Data volume container db and create a data volume to mount to the/MNT directory of the container db

# docker Run-ti--volume-from=db--name db1 CentOS # DB1 containers mount data volumes in a DB container

# docker Run-ti--volume-from=db--name DB2 CentOS # DB2 containers mount data volumes in a DB container

At this time three containers DB,DB1,DB2 can share the directory/mnt

--link Connecting other containers

--link Name:alias name to establish the container name of the connection, alias of the container to which alias is connected

# Docker run-ti-d-P--name web--link lamp:lamp centos6.4/bin/bash new container web and already running container lamp connection

List of PS display containers

-A Show All information

-Q displays only the ID

# Docker Inspect 5d20c5528521 display container details

# docker Ps-a-Q ID

# Docker Inspect-f "{{. State.pid}} "5d20c5528521 displays the Pid of the running container

Stop|start|restart Stop | start | Restart container

exec enters the container (recommended)

# docker exec [OPTIONS] CONTAINER COMMAND [ARG ...]

# docker EXEC-T-I 216c623071b3/bin/bash

Attack container_id into the container

# Docker Attack 216c623071b3

Using the attach command is sometimes inconvenient. When multiple windows are attach to the same container at the same time, all Windows will be displayed synchronously. When a window is blocked by a command, other Windows cannot perform the action.

Nsenter

# yum Install Util-linux

# pid=$ (Docker inspect-f "{{. State.pid}} "5d20c5528521)

# nsenter--target $PID--mount--uts--ipc--net--pid

# nsenter--target 10981--mount--uts--ipc--net--pid

-T,--target <pid> target process to get namespaces

-M,--mount[=<file>] Enter mount namespace

-U,--uts[=<file>] Enter UTS namespace (hostname etc)

-I,--ipc[=<file>] Enter System V IPC namespace

-N,--net[=<file>] Enter Network namespace

-P,--pid[=<file>] Enter PID namespace

RM Deletes a container

-F,--force=true Force Delete

-L,--link=false delete the container's connection, but keep the container

-V,--volumes=false delete the container mounted data volume

Export the container, export a container that has been created to a file, regardless of whether the container is in a running state at this time

-O,--output= ""

# Docker Export 929bf12bc6ea > Centos_6.4_php.tar

Other common commands

Docker-h 127.0.0.1:1234-d & Modify the server to listen on the local TCP connection 1234 port

Volume managing Docker Files

Login Login Warehouse https://hub.docker.com/, after successful login information save file in user home directory/.docker/config.json

Enter the user, password, mail.

Download the. Bashrc_docker and put the content in the. BASHRC

# wget-p ~ Https://github.com/yeasy/docker_practice/raw/master/_local/.bashrc_docker;

# echo "[-F ~/.bashrc_docker] &&. ~/.bashrc_docker ">> ~/.BASHRC

# source ~/.BASHRC

This file defines a lot of easy-to-use Docker commands, such as Docker-pid to get the PID of a container;

And Docker-enter can enter the container or execute commands directly inside the container.

http://liumissyou.blog.51cto.com/4828343/1792500

This article is from the "System website Operations" blog, please be sure to keep this source http://cgc243652136qq.blog.51cto.com/3989433/1828725

Docker basic Commands