Docker in container
lxc -> libcontainer -> runC
OCI (Open Container Initiative)
Led by the Linux Foundation, founded in June 2015
Role is specified when the container format and run around an open industry standard
docker architecture consists of several parts:
docker daemon
docker client
docker Registry
Installation and use of docker
Dependent basic environment:
64 bits CPU
Linux Kernel 3.10+
Linux Kernel cgroup and namespaces
installation
Tsinghua Source: https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/
cd /etc/yum.repo
moved https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo
Modify the source
Into the docker-ce.repo
:%s@https://download.docker.com@https://mirrors.tuna.tsinghua.edu.cn/docker-ce/@
Installation: yum install docker-ce
Profile /etc/docker/daemon.json (need to create your own directory does not exist)
docker Mirror accelerate
docker cn
Ali Cloud Accelerator
China University of Science and Technology
{
"registry-mirrirs": ["https://registry.docker-cn.com"]
}
启动时报错了：Job for docker.service failed because the control process exited with error code. See "systemctl sta
Json format may be concluded that there is a problem handwriting again after the problem is solved
{
"storage-driver":"devicemapper"
}
After the storage system has two overlay2 system and devicemapper 7.4 version supports overlay2 good performance
Common operations:
docker search image search
docker pull: pulling mirroring
docker images to view mirror
docker create create a new container
docker start
docker run
docker attach
docker ps
docker logs
docker restart
dockeer stop
docker kill
docker rm
Download miniature nginx Mirror
docker image pull nginx:1.14-alpine
Delete two ways mirror:
docker image rm mirror name
docker rmi mirror name
List all mirrors
docker image ls
docker images
docker image ls --no-trunc
View container:
docker container ls
docker ps
docker ps -a view of the container used (comprising the container is not run)
Open an interactive container:
docker run --name b1 -it busybox: latest (create container but can also be created does not start automatically)
-t: terminal run
-i: interactive operation
-d: background
Exit interface (while the container will also stop)
exit
Start container
docker start -i -a b1
Stop the container:
docker stop container ID | container name
docker kill container ID | container name (equivalent to the difference between the two inside linux-9 and -15 difference)
Delete container (only stopped can be deleted)
docker rm container name
Into the container which execute interactive commands:
docker exec -it kvstor1 /bin/bash
See container log (printed directly above the terminal)
docker logs web1