First, there is a centos7 + system (7.5)
installed docker: yum -y install docker
start the service: systemctl start docker
set boot docker: systemctl enable docker
version View: docker version
System Information: docker info
download mirror:
CentOS: Docker Search CentOS
pull official centos: docker pull docker.io/centos
replacement mirror address:
1.docker Chinese official District: HTTPS: //registry.docker-cn.com
2. NetEase: HTTP: //hub-mirror.c.163.com
3 .ustc: https://docker.mirrors.ustc.edu.cn
edit data replacement source: VI /etc/docker/daemon.json
{
"Registry-Mirrors": [ "https://registry.docker-cn.com "]
}
restart docker restart to take effect: systemctl restart docker.service
View Download mirror: docker images
open network forwarding function: automatically open the default
manually open: vim /etc/sysctl.conf
Insert: net.ipv4.ip_forward = 1
entry into force: sysctl -p
verification: CAT / proc / SYS / NET / ipv4 / ip_forward
1, run, stop, disable firewalld
start: # systemctl start firewalld
view the status: # systemctl status firewalld or firewall -cmd --state
stop: # systemctl disable firewalld
disabled: # systemctl stop firewalld
start centos: docker run -it docker.io/centos:latest / bin / bash
into the container
to see version: CAT / etc / RedHat-release
CentOS Release 7.6.1810 linux (Core)
-i interactive mode
-t assigned pseudo-terminal
helloword container: docker run -d docker.io/centos:latest / bin / sh -c "while true; do echo hello word; sleep 1; done "
View container logs: docker logs 8f8e1924fabb -f (real-time output)
kill container: docker kill container id
closed container: docker stop container id
start container: docker start container id
reboot: docker restart container id
remove the container: docker rm container id
Docker image generation there are two methods:
the current state of the container 1.docker commit # saved to the image, and then generates the corresponding new Image
2.docker Build # file using Dockerfile automated production Image
1. presentation:
Docker RUN -it docker.io/centos:latest / bin / bash
install apache: yum -y install httpd
out of the container
exit
submit: docker commit 939a4f2c8851 liwei / apache (certain lowercase)
to view mirror came out
remove the mirror: docker rmi id
with a new image: docker run -it liwei / apache / bin / bash
into the container: before installing check whether there is: httpd RPM -qa
Docker RUN -it -p 9090: 80 Liwei / the Apache / bin / bash
see container configuration: docker inspect containers id
can view this container ip oh: 172.18.0.2
into the start of the container: docker exec -it id name / bin / bash
to view the start position of the container into the container after:
find ./ -name ** apache **
start / usr / sbin / apachectl
in: writing data outside the home directory created a.txt,
Docker CP /home/a.txt container ID: / home
Docker combat: Production python running environment uwsgi the Django +
1. New Dockerfile
content:
the FROM nginx
RUN echo '<h1> the Hello, Docker </ h1>!'> /home/liwei/nginx/index.html
save
docker build -t mynginx: v1 (I can not start, the reason that last less. point)
to view the image creation: docker images
to start the mirror: docker run -itd -p 8080: 80 mynginx: v1
public network access: HTTP: //47.93.225.36: 8080 /
the FROM Specifies the base image