DOCKER学习_017:Docker-Compose介绍

时间  2020-05-05
标签 docker 学习 compose 介绍 栏目 Docker 繁體版
原文   原文链接

dockers三驾马车html

  •  Docker Machine
  •  Docker Swarm
  •  Docker Compose

一 Docker Compose介绍

Docker Compose是一个定义和运行多容器应用的单机编排工具。经过Docker Compose你可使用一个单一的YAML文件来配置多个应用服务，经过一条命令，就能够将全部配置的服务所有启动起来。git

1.1 使用Docker Compose的三个步骤

  • 使用Dockerfile定义环境，这样能够确保其在任意地方运行github

  • 使用docker-compose.yml文件定义服务，这样它们就能够在独立环境中一块儿运行redis

  • 运行docker-compose up使用docker-compose启动全部应用docker

1.2 Docker Compose能够管理应用的整个生命周期

  • 启动、中止、重建服务apache

  • 查看服务的运行状态vim

  • 流式输出服务日志bash

  • 对服务执行一次性命令curl

二 Docker Compose安装使用

2.1 二进制安装

下载地址：https://github.com/docker/compose/releasestcp

 

 

同时还有安装方式，也能够wget下载上面的文件，自己也是一个二进制文件

 [root@docker-server3 ~]# curl -L https://github.com/docker/compose/releases/download/1.25.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

% Total    % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100   617    0   617    0     0    470      0 --:--:--  0:00:01 --:--:--   470
100 16.2M  100 16.2M    0     0   767k      0  0:00:21  0:00:21 --:--:-- 1622k

[root@docker-server3 ~]# chmod +x /usr/local/bin/docker-compose

[root@docker-server3 ~]# docker-compose --version

docker-compose version 1.25.0, build 0a186604

[root@docker-server3 ~]# mkdir /docker-compose

[root@docker-server3 ~]# cd /docker-compose

2.2 简单使用

写一个简单的dockerpose文件

[root@docker-server3 docker-compose]# vim docker-compose.yml

version: '3' services: httpd-test: image: httpd:2.4

[root@docker-server3 docker-compose]# docker-compose up -d

Creating network "docker-compose_default" with the default driver Pulling httpd-test (httpd:2.4)... 2.4: Pulling from library/httpd 8ec398bc0356: Already exists 354e6904d655: Pull complete 27298e4c749a: Pull complete 10e27104ba69: Pull complete 36412f6b2f6e: Pull complete Digest: sha256:769018135ba22d3a7a2b91cb89b8de711562cdf51ad6621b2b9b13e95f3798de Status: Downloaded newer image for httpd:2.4 Creating docker-compose_httpd-test_1 ... done

[root@docker-server3 docker-compose]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 06a7e97739b2 httpd:2.4           "httpd-foreground"   4 minutes ago       Up 4 minutes        80/tcp              docker-compose_httpd-test_1

删除而后在执行，就会拉去一个同样的镜像

[root@docker-server3 docker-compose]# docker rm -f 06a7e97739b2

[root@docker-server3 docker-compose]# docker-compose up -d

[root@docker-server3 docker-compose]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES d184230f2de6 httpd:2.4           "httpd-foreground"   3 seconds ago       Up 2 seconds        80/tcp              docker-compose_httpd-test_1

同时建立两个容器，修改compose文件

[root@docker-server3 docker-compose]# vi docker-compose.yml

version: '3' services: httpd-test: image: httpd:2.4 httpd-test-2: image: httpd:2.4 volumes: - "/data:/var/www/html" ports: - "80:80"

[root@docker-server3 docker-compose]# docker-compose up -d

docker-compose_httpd-test_1 is up-to-date Creating docker-compose_httpd-test-2_1 ... done

[root@docker-server3 docker-compose]#  cat /data/index.html

just a test

[root@docker-server3 docker-compose]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 8b60d28de874 httpd:2.4           "httpd-foreground"   2 minutes ago       Up 2 minutes        0.0.0.0:80->80/tcp   docker-compose_httpd-test-2_1 d184230f2de6 httpd:2.4           "httpd-foreground"   6 minutes ago       Up 6 minutes        80/tcp               docker-compose_httpd-test_1

[root@docker-server3 docker-compose]# docker exec -it 8b60d28de874 /bin/bash

root@8b60d28de874:/usr/local/apache2# ls /var/www/html/ ca_download database index.html job_logs psc redis registry secret root@8b60d28de874:/usr/local/apache2# cat /var/www/html/index.html just a test

[root@docker-server3 docker-compose]# vi docker-compose.yml 

version: '3' services: httpd-test: image: httpd:2.4 httpd-test-2: image: httpd:2.4 volumes: - "/data:/var/www/html" ports: - "80:80" httpd-test-3: image: httpd:2.4 volumes: - "/data:/usr/local/apache2/htdocs" ports: - "8080:80"

[root@docker-server3 docker-compose]# docker-compose up -d

docker-compose_httpd-test_1 is up-to-date docker-compose_httpd-test-2_1 is up-to-date Creating docker-compose_httpd-test-3_1 ... done

[root@docker-server3 docker-compose]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a3d24a4c5d25 httpd:2.4           "httpd-foreground"   6 seconds ago       Up 5 seconds        0.0.0.0:8080->80/tcp   docker-compose_httpd-test-3_1 8b60d28de874 httpd:2.4           "httpd-foreground"   4 minutes ago       Up 4 minutes        0.0.0.0:80->80/tcp     docker-compose_httpd-test-2_1 d184230f2de6 httpd:2.4           "httpd-foreground"   14 minutes ago      Up 14 minutes       80/tcp                 docker-compose_httpd-test_1

[root@docker-server3 docker-compose]# curl http://192.168.132.133:8080

just a test

[root@docker-server3 docker-compose]# echo 111 > /data/111.html

[root@docker-server3 docker-compose]# curl http://192.168.132.133:8080/111.html

111

以上就是docker的一个简答的操做

2.3 docker-compose的经常使用指令

在上面的一个简单示例中，咱们已经使用了docker-compose up来启动一个docker-compose.yml文件定义的服务。刚刚经过docker-compose up虽然启动了服务，当是docker-compose指令却在前台执行，若是须要将其放入后台运行，可使用-d参数：

docker-compose up -d #后台运行 docker-compose -f xx.yaml up -d #若是yml文件不是docker-compose.yml须要使用-f强制指定 docker-compose down #删除容器 docker-compose ps #做用也是查看容器，可是它只能查看docker-compose启动的容器，使用docker run启动的容器没法看到 docker-compose start docker-compose stop docker-compose restart docker-compose logs

[root@docker-server3 docker-compose]# docker-compose down

Stopping docker-compose_httpd-test-3_1 ... done Stopping docker-compose_httpd-test-2_1 ... done Stopping docker-compose_httpd-test_1   ... done Removing docker-compose_httpd-test-3_1 ... done Removing docker-compose_httpd-test-2_1 ... done Removing docker-compose_httpd-test_1   ... done Removing network docker-compose_default

[root@docker-server3 docker-compose]# docker-compose up -d 

Creating network "docker-compose_default" with the default driver Creating docker-compose_httpd-test-3_1 ... done Creating docker-compose_httpd-test_1   ... done Creating docker-compose_httpd-test-2_1 ... done

[root@docker-server3 docker-compose]# docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ddf6b2a8f4bb httpd:2.4           "httpd-foreground"   6 seconds ago       Up 5 seconds        0.0.0.0:80->80/tcp     docker-compose_httpd-test-2_1 a1dabe398019 httpd:2.4           "httpd-foreground"   6 seconds ago       Up 5 seconds        80/tcp                 docker-compose_httpd-test_1 81030fea5437 httpd:2.4           "httpd-foreground"   6 seconds ago       Up 5 seconds        0.0.0.0:8080->80/tcp   docker-compose_httpd-test-3_1

[root@docker-server3 docker-compose]# docker-compose ps -a

 Name Command State Ports ------------------------------------------------------------------------------- docker-compose_httpd-test-2_1   httpd-foreground   Up      0.0.0.0:80->80/tcp docker-compose_httpd-test-3_1   httpd-foreground   Up      0.0.0.0:8080->80/tcp docker-compose_httpd-test_1     httpd-foreground   Up      80/tcp

启动中止的操做

前面就是对docker-compose的一个简单介绍的操做，后续在仔细研究docker-compose的语法以及案例

博主声明：本文的内容来源主要来自誉天教育晏威老师，由本人实验完成操做验证，须要的博友请联系誉天教育（http://www.yutianedu.com/），得到官方赞成或者晏老师（https://www.cnblogs.com/breezey/）本人赞成便可转载，谢谢！

相关文章
相关标签/搜索
每日一句
    每一个你不满意的现在，都有一个你没有努力的曾经。
本站公众号
   欢迎关注本站公众号,获取更多信息
联系我们 最近搜索 最新文章 沪ICP备13005482号-10 MyBatis教程 SQL 教程 MySQL教程 Java 教程 Thymeleaf 教程 Hibernate教程 Spring教程 Redis教程