One: Introduction
Docker Mirror
Docker in the container based mirroring is activated
Mirroring is the start of the core container
Stratified mirror design, the topmost layer of the reader
COW use snapshot technology to ensure that the bottom is not lost
To see through ifconfig (ip a) docker0 whether there
docker has been launched successfully
II: mirroring operation command
Note: The last set of commands docker tag or label is not the name changed, but will create a new image
The above is a summary of some commonly used commands
(1) to mysql, for example, using the docker search command
Command: docker search mysql
Where NAME is the name refers to the various versions mysql DESCRIPTION refers to the release notes STARS is whether the official usage OFFICIAL
Look for other software packages is the same operation such as: tomcat
Command: docker search tomcat # is the same
(2) then use a pull command to download image
Command: docker pull tomcat # tomcat download mirror
The figure is seen pull complete success download
We look at command execution docker images
Command: docker images
Title: REPOSITORY means mirroring warehouse TAG is the version (latest: the latest) IMAGE ID refers to the image ID number CREATED is the time to create SIZE refers to the memory size
III: operation command of the container
Note: There are a set of commands itd it
itd: it is on the run in the background
it: is the direct use, once the exit, turn off automatic container
We said before the vessel is based on a mirrored boot, the boot image is the core of the container
Now docker in the container and can not use the ps command to view a list of container
Command: docker ps
Run container format
Use the format: docker run --name container-name: tag -d image-name
1 .-- name: custom container name is not specified, docker automatically generates a name
2.-d: indicates background container
3.image-name: Specifies the image name and run Tag
Now start tomcat
命令：docker run --name Tomcat -d tomcat:latest
Now is to start a successful, long string of alphanumeric Here is the ID number of the container, then check with the ps command vessel list
1.CONTAINER ID: di container
2.IMAGE: Mirror Name: Tag
3.COMMAND: command
4.CREATES: time to create a container
5.STATUS: The current state of the container (up indicates run, Exited means to stop running)
6.PORTS: mirroring port number and protocol used by the program
Note: At this point, although the container has been in operation, Tomcat 8080 port mirroring occupation, but the 8080 is the port inside the Docker container port, not the server,
We must do port mapping maps the actual server port to port in order to access Docker containers.
Stop the container
Use docker stop container-name / container-id command to stop operation of the vessel, the name of the specified container or containers may be of id
Command: docker stop 83e141bd0985
ps mean: View the currently running container
ps -a means: All containers should be displayed, with or without running or not running
ps -q means: show only run container
Start container
Start and stop operation of the container using docker start container-name / container-id command can be started the same way according to the name of the container or containers id
Command: docker start 83e141bd0985
Delete container
Before using docker rm container-id command to remove the container, remove the container, the container must be stopped running, remove as container id
rm parameter is to remove the container, rmi parameter is to remove the mirror
Mirror operation in a container, that can run a plurality of non-interfering Docker containers can be run in a mirror with a plurality of containers
Command: docker rm Tomcat
Port Mapping
Use: docker run --name container-name: tag -d -p server port: Docker port image-name
1 .-- name: custom container name is not specified, docker automatically generates a name
2.-d: indicates background container
3.image-name: Specifies the image name and run Tag
4.-p represents port mapping server Docker container, the container occupies default port is mirrored Docker container port are isolated from the outside world, it is mapped to access port
Now open two ports to use iptables
Command: iptables -A INPUT -p tcp --dport 8080 -j ACCEPT
command: iptables -A INPUT -p tcp --dport 8090 -j ACCEPT
command: iptables -L -n # View firewall rule
Then run the two containers, container names are designated as "Tomcat1", "Tomcat", two vessels are the same tomcat: latest image
Both containers designated port mapping, respectively, 8080,8090, will be forwarded to the internal Docker containers
命令：docker run --name Ttomcat1 -d -p 8080:8080 tomcat:lates
命令：docker run --name Ttomcat -d -p 8090:8080 tomcat:latest
After a successful start, ip addr show to check the server ip address (192.168.175.102), then you can access from the physical machine
Command: ip addr show
Physical machine access 192.168.175.102:8080
Physical machine access 192.168.175.102:8090
Container logs
Use docker logs container-name / container-id command to view the container log information, specify the name of the vessel or container id on it
Command: After docker logs Ttomcat # start the container can view the log information
