Docker版本及依賴的基礎環境
Docker版本
雙發行版
docker-ee
docker-ce
moby
依賴的基礎環境
64 bits CPU
Linux Kernel 3.10+
Linux Kernel cgroups and namespaces
Docker安裝方法
1、CentOS Extras Repo
2、Docker-CE
下載：https://download.docker.com/
倉庫配置文件：https://download.docker.com/linux/centos/docker-ce.repo
Docker程序環境
環境配置文件：
/etc/sysconfig/docker-network
/etc/sysconfig/docker-storage
/etc/sysconfig/docker
Unit File：
/usr/lib/systemd/system/docker.service
Docker Registry配置文件：
/etc/containers/registries.conf
docker-ce:
配置文件：/etc/docker/daemon.json
Docker鏡像加速
Docker cn
{
"registry-mirrors": ["https://registry.docker-cn.com"]
}
中國科技大學
阿里雲加速器
註冊阿里雲賬號,專用加速器地址獲得路徑：
https://cr.console.aliyun.com/#/accelerator
Docker使用
啓動服務即可使用Docker
systemctl start docker
Docker命令
Usage: docker [OPTIONS] COMMAND
A self-sufficient runtime for containers
Options:
--config string Location of client config files (default "/root/.docker")
-D, --debug Enable debug mode
-H, --host list Daemon socket(s) to connect to
-l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal")
(default "info")
--tls Use TLS; implied by --tlsverify
--tlscacert string Trust certs signed only by this CA (default "/root/.docker/ca.pem")
--tlscert string Path to TLS certificate file (default "/root/.docker/cert.pem")
--tlskey string Path to TLS key file (default "/root/.docker/key.pem")
--tlsverify Use TLS and verify the remote
-v, --version Print version information and quitManagement Commands: config Manage Docker configs container Manage containers image Manage images network Manage networks node Manage Swarm nodes plugin Manage plugins secret Manage Docker secrets service Manage services stack Manage Docker stacks swarm Manage Swarm system Manage Docker trust Manage trust on Docker images volume Manage volumes
Commands: 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 Run 'docker COMMAND --help' for more information on a command.
常用操作
查看docker相關的信息：
version
info
鏡像：
images
rmi
pull
容器：
run：創建並運行一個容器；
create：創建一個容器；
start：啓動一個處於停止狀態容器；
創建：
create
run
啓動：
start
停止：
kill
stop
重啓：
restart
暫停和繼續：
pause
unpause
刪除容器：
rm
run --rm
創建容器：
基於“鏡像文件”，
鏡像文件有默認要運行的程序；
注意：
運行的容器內部必須有一個工作前臺的運行的進程；
docker的容器的通常也是僅爲運行一個程序；
要想在容器內運行多個程序，一般需要提供一個管控程序，例如supervised。
run, create
--name CT_NAME
--rm：容器運行終止即自行刪除
--network BRIDGE：讓容器加入的網絡；
默認爲docker0；
交互式啓動一個容器：
-i：--interactive，交互式；
-t：Allocate a pseudo-TTY
從終端拆除：ctrl+p, ctrl+q
attach：附加至某運行狀態的容器的終端設備；
exec：讓運行中的容器運行一個額外的程序；
查看：
logs：Fetch the logs of a container，容器內部程序運行時輸出到終端的信息；
ps：List containers
-a, --all：列出所有容器；
--filter, -f：過濾器條件顯示
name=
status={stopped|running|paused}
stats：動態方式顯示容器的資源佔用狀態：
top：Display the running processes of a container容器狀態及命令
容器的狀態：
created
runing
paused
stopped
deleted