Docker first experience-manage mysql+tomcat mirroring

Introduction

Usually with Linux, I do not have a hard time regretting that Linux did not study well. Install some software with some environment is very afraid, thanks to the Docker. Docker is an application container engine that manages a lot of software images that are officially placed in the Docker Registories (Docker hub or Private warehouse). After downloading the image, you can run the build container directly and manage the container with a unified start and pause. Simplify the process of installing software, and realize the unified management of software environment.

Concept

Three core concepts of Docker: mirrors, containers, warehouses

Image images: Like a virtual machine image, as the saying goes is the installation file.

Container contains: Similar to a lightweight sandbox, where the container is creating an application run instance from the mirror,

You can start, start, stop, delete, and these containers are isolated from each other and are not visible to each other.

Warehouse Registories: Similar to the Code warehouse, is the place where Docker centrally stores image files.

Docker installation

Pre-conditions:

64-bit CENTOS7 System

Kernel 3.10+

1. Check the kernel version and return a value greater than 3.10.

$ uname -r

2. Log in to the terminal using sudo or root privileges.

3. Make sure Yum is up to date

$ yum update

4. Installing Docker

$ yum install -y docker

5. View the Docker version

$ docker -v

6. Start Docker

 $ systemctl start docker

7. Set up the Docker service to start randomly

 $ systemctl start docker

8.docker Stop of Service

 $ systemctl stop docker

Docker Action on mirroring

1. Search for images

docker search image-name

2. Download the image

docker pull image-name:版本号

3. View existing Mirrors

docker images

4. Remove the image

docker rmi image_id

Docker operations on a container

1. Start the container

docker run --name yourname -d imagename:版本号

2. View containers

docker ps 查看启动中的容器docker ps -a 查看所有容器

3. Stop the container

docker stop contains_id

4. Start the container

docker start contains_id

5. Delete a container

docker rm contains_id

6. Production look at the container log

docker logs contains_id

Docker installs and starts the MySQL container

docker  search mysqldocker pull mysqldocker run -e MYSQL_ROOT_PASSWORD=rootpassword -d -p 3306:3306 mysql:latest

Docker installs and launches Tomcat container

 docker search tomcat docker pull tomcat docker run --name mytomcat01 -d -p 80:8080 tomcat docker cp chihaodian.war mytomcat01:/usr/local/tomcat/webapps

Docker first Experience-manage mysql+tomcat mirroring