SpringBoot Docker入门，SpringBoot Docker安装

SpringBoot Docker入门，SpringBoot Docker安装

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©Copyright 蕃薯耀 2018年4月8日

http://www.cnblogs.com/fanshuyao/

一、安装Docker

1、查看Linux版本

uname -r

 Docker要求Linux系统的版本不低于3.10，如下：

uname -r
  3.10.0-327.el7.x86_64

2、安装Docker

yum install docker

安装过程需要输入 y 确定安装

当出现

Complete!

表示Docker安装成功！

3、启动Docker

systemctl start docker

4、查看Docker版本

docker -v

 结果如下：

[root@localhost ~]# docker -v
Docker version 1.13.1, build 774336d/1.13.1

或者使用：

docker version

 结果如下：

[root@localhost ~]# docker version

Client:
 Version:         1.13.1
 API version:     1.26
 Package version: <unknown>
 Go version:      go1.8.3
 Git commit:      774336d/1.13.1
 Built:           Wed Mar  7 17:06:16 2018
 OS/Arch:         linux/amd64
Server:
 Version:         1.13.1
 API version:     1.26 (minimum version 1.12)
 Package version: <unknown>
 Go version:      go1.8.3
 Git commit:      774336d/1.13.1
 Built:           Wed Mar  7 17:06:16 2018
 OS/Arch:         linux/amd64
 Experimental:    false

5、设置Docker开机启动

systemctl enable docker

 结果如下：

[root@localhost ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/
systemd/system/docker.service.

6、停止Docker

systemctl stop docker

二、Docker使用

1、搜索Mysql

docker search mysql

2、下载mysql

docker pull mysql

 默认是下载最新版本，如果想下载指定版本的，可以加上tag，tag指的就是版本号，

查看版本可以到docker Hub：https://hub.docker.com/r/library/mysql/tags/

命令如下：

docker pull mysql:tag

 如：

docker pull mysql:5.5

3、更换Dock Hub

官网地址：https://hub.docker.com/explore/

使用docker Hub直接下载会出现超时，如下：

net/http: TLS handshake timeout

 所以需要更换镜像，如下（更改为阿里的镜像）：

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s https://04c5r1cy.mirror.aliyuncs.com

 然后重启docker

systemctl restart docker

 此时会发生错误：

Job for docker.service failed because the control process exited with error code. See "systemctl statu
s docker.service" and "journalctl -xe" for details.

 原因是修改了镜像，造成/etc/docker/daemon.json文件的格式不正确，后面多了一个逗号

查看daemon.json文件：

vi /etc/docker/daemon.json

 文件内容如下：

{"registry-mirrors": ["https://04c5r1cy.mirror.aliyuncs.com"],}

 后面多了一个逗号，需要删除，修改为

{"registry-mirrors": ["https://04c5r1cy.mirror.aliyuncs.com"]}

 保存退出，重启docker

systemctl restart docker

 然后再去获取mysql 5.5版本

docker pull mysql:5.5

4、查看系统存在的镜像

docker images

 结果如下：

[root@localhost ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/mysql     5.5                 0da48351c371        2 weeks ago         205 MB

三、运行镜像（容器使用）

1、运行一个镜像组件，即创建一个docker窗口，可以运行多个

docker run --name xxxx -d 组件名:版本号（Tag）

 --name：表示重命名（--是两横杠，这里看不出来）

-d：表示后台运行

如运行一个tomcat：

docker run --name mytomcat -d tomcat:8.5

2、查看运行中的容器

docker ps

 

3、查看所有容器，包括运行的和暂停的容器

docker ps -a

4、停止运行中的容器

docker stop 容器ID

 或

docker stop 容器names

 最好使用容器ID

5、重新开始运行暂定的容器

docker start 容器ID

 暂停的容器ID通过docker ps -a 查找

6、删除容器

docker rm -f 容器ID

 结果如下：

[root@localhost ~]# docker rm -f a9c2f22a4b50
a9c2f22a4b50

7、启动一个有端口映射的容器(Tomcat)

docker run -d -p 8888:8080 tomcat

 -d：表示后台运行

-p：表示端口映射，前面的端口为虚拟机的端口，后面的端口表示tomcat的端口，表示将虚拟机的8888端口映射到tomcat的8080端口，当访问192.168.1.166:8888就可以访问tomcat

启动的结果如下：

[root@localhost ~]# docker run --name tomcat8 -d -p 8080:8080 tomcat:8.5
b91a31986a63f82340c588272a334c164de571fb4201d628bad3418f55d7f20b
[root@localhost ~]# docker ps
CONTAINER ID  IMAGE       COMMAND           CREATED        STATUS        PORTS                    NAMES
b91a31986a63  tomcat:8.5  "catalina.sh run" 12 seconds ago Up 8 second   0.0.0.0:8080->8080/tcp   tomcat8

通过浏览器访问：http://localhost:8080/来检查tomcat有没有启动成功。

注意：

如果访问不了，可能是因为防火墙的原因！！！

查看防火墙状态：

service firewall status

关闭防火墙

service firewall stop

8、查看docker日志

docker logs 容器ID

9、其它：

使用

docker --help

 查看其它命令，如下：

[root@localhost ~]# docker --help

Usage:  docker COMMAND

A self-sufficient runtime for containers

Options:
      --config string      Location of client config files (default "/root/.docker")
  -D, --debug              Enable debug mode
      --help               Print usage
  -H, --host list          Daemon socket(s) to connect to (default [])
  -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 quit

Management Commands:
  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
  volume      Manage volumes

Commands:
  attach      Attach 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 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.

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©Copyright 蕃薯耀 2018年4月8日

http://www.cnblogs.com/fanshuyao/