页面“Django安全策略”与“Docker-compose教程”之间的差异
docker>Evan |
docker>Evan |
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− | [[category: | + | 可以 Dockerfile 创建容器,docker-compse实现部署 或者直接用官方的img 利用docker-compse实现部署 |
+ | |||
+ | =introduce= | ||
+ | <pre> | ||
+ | Compose项目来源于之前的fig项目,使用python语言编写,与docker/swarm配合度很高。 | ||
+ | |||
+ | Compose 是 Docker 容器进行编排的工具,定义和运行多容器的应用,可以一条命令启动多个容器,使用Docker Compose不再需要使用shell脚本来启动容器。 | ||
+ | |||
+ | Compose 通过一个配置文件来管理多个Docker容器,在配置文件中,所有的容器通过services来定义,然后使用docker-compose脚本来启动,停止和重启应用,和应用中的服务以及所有依赖服务的容器,非常适合组合使用多个容器进行开发的场景。 | ||
+ | |||
+ | docker-compose默认的模板文件是 docker-compose.yml,其中定义的每个服务都必须通过 image 指令指定镜像或 build 指令(需要 Dockerfile)来自动构建。 | ||
+ | |||
+ | 其它大部分指令都跟 docker run 中的类似。 | ||
+ | 如果使用 build 指令,在 Dockerfile 中设置的选项(例如:CMD, EXPOSE, VOLUME, ENV 等) 将会自动被获取,无需在 docker-compose.yml 中再次设置。 | ||
+ | |||
+ | 使用Compose 基本上分为三步: | ||
+ | 1.Dockerfile 定义应用的运行环境 | ||
+ | 2.docker-compose.yml 定义组成应用的各服务 | ||
+ | 3.docker-compose up 启动整个应用 | ||
+ | --------------------- | ||
+ | |||
+ | Compose 项目是 Docker 官方的开源项目,负责实现对 Docker 容器集群的快速编排。 | ||
+ | |||
+ | 在日常工作中,经常会碰到需要多个容器相互配合来完成某项任务的情况。例如要实现一个 Web 项目,除了 Web服务容器本身,往往还需要再加上后端的数据库服务容器,甚至还包括负载均衡容器等。 | ||
+ | |||
+ | Compose 恰好满足了这样的需求。它允许用户通过一个单独的 docker-compose.yml 模板文件(YAML 格式)来定义一组相关联的应用容器为一个项目。 | ||
+ | |||
+ | Compose 中有两个重要的概念: | ||
+ | |||
+ | 服务 (service):一个应用的容器,实际上可以包括若干运行相同镜像的容器实例。 | ||
+ | |||
+ | 项目 (project):由一组关联的应用容器组成的一个完整业务单元,在 docker-compose.yml 文件中定义。 | ||
+ | |||
+ | </pre> | ||
+ | |||
+ | =Docker-compose常用命令= | ||
+ | <pre> | ||
+ | docker-compose --help | ||
+ | |||
+ | docker-compose up -d nginx 构建建启动nignx容器 # #这个是写在yml里面的server名 查看 文件, 不是容器名 | ||
+ | |||
+ | docker-compose exec nginx bash 登录到nginx容器中 | ||
+ | |||
+ | docker-compose down 删除所有nginx容器,镜像 | ||
+ | |||
+ | docker-compose ps 显示所有容器 | ||
+ | |||
+ | docker-compose restart nginx 重新启动nginx容器 #这个是写在yml里面的server名 不是容器名 | ||
+ | |||
+ | docker-compose run --no-deps --rm php-fpm php -v 在php-fpm中不启动关联容器,并容器执行php -v 执行完成后删除容器 | ||
+ | |||
+ | docker-compose build nginx 构建镜像 。 | ||
+ | |||
+ | docker-compose build --no-cache nginx 不带缓存的构建。 | ||
+ | |||
+ | docker-compose logs nginx 查看nginx的日志 | ||
+ | |||
+ | docker-compose logs -f nginx 查看nginx的实时日志 | ||
+ | |||
+ | |||
+ | docker-compose config -q 验证(docker-compose.yml)文件配置,当配置正确时,不输出任何内容,当文件配置错误,输出错误信息。 | ||
+ | |||
+ | docker-compose events --json nginx 以json的形式输出nginx的docker日志 | ||
+ | |||
+ | docker-compose pause nginx 暂停nignx容器 | ||
+ | |||
+ | docker-compose unpause nginx 恢复ningx容器 | ||
+ | |||
+ | docker-compose rm nginx 删除容器(删除前必须关闭容器) | ||
+ | |||
+ | docker-compose stop nginx 停止nignx容器 | ||
+ | |||
+ | docker-compose start nginx 启动nignx容器 | ||
+ | |||
+ | |||
+ | note: | ||
+ | docker-compose 知道补充 | ||
+ | |||
+ | docker-compose ps | ||
+ | Name Command State Ports | ||
+ | -------------------------------------------------------------------------------------------------------------------- | ||
+ | docker4jenkins_jenkins_1 /sbin/tini -- /usr/local/b ... Up 0.0.0.0:50000->50000/tcp, 0.0.0.0:7099->8080/tcp | ||
+ | |||
+ | docker-compose stop jenkins #后面是加server名 服务名称 | ||
+ | |||
+ | docker-compose.yml | ||
+ | |||
+ | services: | ||
+ | jenkins: | ||
+ | image: jenkins/jenkins:lts | ||
+ | |||
+ | 所以 | ||
+ | docker-compose start jenkins | ||
+ | </pre> | ||
+ | |||
+ | =install= | ||
+ | <pre> | ||
+ | #方法1 如果是国内网络太慢 可以把变量换成对应的值 然后先在desktop 下载回来 | ||
+ | sudo curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose | ||
+ | |||
+ | #方法 2 有时axel最快了 | ||
+ | #https://github.com/docker/compose/releases/download/1.24.0/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose | ||
+ | sudo chmod +x /usr/local/bin/docker-compose | ||
+ | sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose | ||
+ | $ docker-compose --version | ||
+ | docker-compose version 1.24.0, build 0aa59064</pre> | ||
+ | |||
+ | =Get started with Docker Compose= | ||
+ | ==Step 1: Setup== | ||
+ | ===1.Create a directory for the project:=== | ||
+ | <pre> mkdir composetest && cd composetest</pre> | ||
+ | ===Create a file called app.py in your project directory and paste this in:=== | ||
+ | <pre>import time | ||
+ | |||
+ | import redis | ||
+ | from flask import Flask | ||
+ | |||
+ | app = Flask(__name__) | ||
+ | cache = redis.Redis(host='redis', port=6379) | ||
+ | |||
+ | |||
+ | def get_hit_count(): | ||
+ | retries = 5 | ||
+ | while True: | ||
+ | try: | ||
+ | return cache.incr('hits') | ||
+ | except redis.exceptions.ConnectionError as exc: | ||
+ | if retries == 0: | ||
+ | raise exc | ||
+ | retries -= 1 | ||
+ | time.sleep(0.5) | ||
+ | |||
+ | |||
+ | @app.route('/') | ||
+ | def hello(): | ||
+ | count = get_hit_count() | ||
+ | return 'Hello World! I have been seen {} times.\n'.format(count) | ||
+ | |||
+ | if __name__ == "__main__": | ||
+ | app.run(host="0.0.0.0", debug=True) </pre> | ||
+ | ===3.Create another file called requirements.txt in your project directory and paste this in=== | ||
+ | <pre>flask | ||
+ | redis</pre> | ||
+ | ==Step 2: Create a Dockerfile== | ||
+ | <pre> | ||
+ | FROM python:3.4-alpine | ||
+ | ADD . /code | ||
+ | WORKDIR /code | ||
+ | RUN pip install -r requirements.txt | ||
+ | CMD ["python", "app.py"]</pre> | ||
+ | ==Step 3: Define services in a Compose file== | ||
+ | ===Create a file called docker-compose.yml=== | ||
+ | <pre> | ||
+ | version: '3' | ||
+ | services: | ||
+ | web: | ||
+ | build: . | ||
+ | ports: | ||
+ | - "5000:5000" | ||
+ | redis: | ||
+ | image: "redis:alpine" | ||
+ | </pre> | ||
+ | ==Step 4: Build and run your app with Compose== | ||
+ | <pre>docker-compose up -d# (后台运行这些containers) 还是这个好 | ||
+ | #马上访问就行了 哈哈 不用一直等 | ||
+ | web_1 | Use a production WSGI server instead. | ||
+ | web_1 | * Debug mode: on | ||
+ | web_1 | * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit) | ||
+ | web_1 | * Restarting with stat | ||
+ | |||
+ | Enter http://0.0.0.0:5000/ in a browser to see the application running.</pre> | ||
+ | |||
+ | ==Step 5: Edit the Compose file to add a bind mount== | ||
+ | Edit docker-compose.yml in your project directory to add a bind mount for the web service: | ||
+ | <pre> | ||
+ | version: '3' | ||
+ | services: | ||
+ | web: | ||
+ | build: . | ||
+ | ports: | ||
+ | - "5000:5000" | ||
+ | volumes: | ||
+ | - .:/code | ||
+ | redis: | ||
+ | image: "redis:alpine" | ||
+ | #胶布的端口是机器的5000 后面的端口是容器的5000 volumes 也是这样顺序 | ||
+ | </pre> | ||
+ | The new volumes key mounts the project directory (current directory) on the host to /code inside the container, allowing you to modify the code on the fly, without having to rebuild the image 把当前目录mounts 到容器的/code | ||
+ | |||
+ | volumes: | ||
+ | - ~/test/composetest:/code # 将主机的当前目录映射为容器内部的 /code数据卷 把当前目录 ~/test/composetest mounts 到容器的/code | ||
+ | |||
+ | |||
+ | <pre> | ||
+ | eg: | ||
+ | |||
+ | #容器 | ||
+ | evan@latop:~/test/composetest$ docker exec -it b4f882c81522 /bin/sh | ||
+ | /code # pwd | ||
+ | /code | ||
+ | /code # ls | ||
+ | Dockerfile app.py app.py~ docker-compose.yml docker-compose.yml~ requirements.txt | ||
+ | |||
+ | #母机 | ||
+ | evan@latop:~/test/composetest$ ls | ||
+ | app.py app.py~ docker-compose.yml docker-compose.yml~ Dockerfile requirements.txt | ||
+ | |||
+ | |||
+ | </pre> | ||
+ | |||
+ | ==Step 6: Re-build and run the app with Compose== | ||
+ | From your project directory, type docker-compose up to build the app with the updated Compose file, and run it. | ||
+ | ==Step 7: Update the application== | ||
+ | Because the application code is now mounted into the container using a volume, you can make changes to its code and see the changes instantly, without having to rebuild the image. 可见 有mount 后 只改变母机的不用rebuild 了 | ||
+ | |||
+ | Change the greeting in app.py and save it. For example, change the Hello World! message to Hello from Docker!: | ||
+ | |||
+ | return 'Hello from Docker! I have been seen {} times.\n'.format(count) | ||
+ | |||
+ | Refresh the app in your browser. The greeting should be updated, and the counter should still be incrementing. | ||
+ | |||
+ | =常用参数= | ||
+ | ==links/external_links参数== | ||
+ | <pre> | ||
+ | -link 同一个物理机之前 | ||
+ | |||
+ | |||
+ | external_links | ||
+ | Docker平台的组合功能提供了一个叫“外部链接”(“external_links”)的设置选项,能用来接连那些在不同组合文件中定义的容器: | ||
+ | |||
+ | eg | ||
+ | hostname: rabbitmq02 | ||
+ | extra_hosts: | ||
+ | - "rabbitmq01:10.3.10.141" #前面是hostname 后面是ip | ||
+ | |||
+ | |||
+ | </pre> | ||
+ | |||
+ | [https://blog.csdn.net/kongxx/article/details/38676917 Docker使用Link在容器之间建立连接] | ||
+ | |||
+ | [https://sdk.cn/news/7643 Docker的组合功能:如何用external_links选项连接组合文件外部定义的容器] | ||
+ | |||
+ | [https://www.cnblogs.com/liyuanhong/articles/5851251.html 如何使不同主机上的docker容器互相通信] | ||
+ | |||
+ | [https://www.jianshu.com/p/aa984711df80 docker compose 中难缠的网络问题] | ||
+ | |||
+ | =trouble= | ||
+ | ==Question == | ||
+ | <pre> | ||
+ | docker-compose up | ||
+ | |||
+ | ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running? | ||
+ | If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable. </pre> | ||
+ | |||
+ | |||
+ | == solve== | ||
+ | <pre> | ||
+ | Use the command sudo systemctl edit docker.service to open an override file for docker.service in a text editor. | ||
+ | |||
+ | Add or modify the following lines, substituting your own values. | ||
+ | |||
+ | [Service] | ||
+ | ExecStart= | ||
+ | ExecStart=/usr/bin/dockerd -H tcp://127.0.0.1:2375 -H unix:///var/run/docker.sock | ||
+ | Save the file. | ||
+ | |||
+ | Reload the systemctl configuration. | ||
+ | |||
+ | $ sudo systemctl daemon-reload | ||
+ | Restart Docker: | ||
+ | |||
+ | $ sudo systemctl restart docker.service | ||
+ | Check to see whether the change was honored by reviewing the output of netstat to confirm dockerd is listening on the configured port. | ||
+ | |||
+ | $ sudo netstat -lntp | grep dockerd | ||
+ | tcp 0 0 127.0.0.1:2375 0.0.0.0:* LISTEN 3758/dockerd | ||
+ | |||
+ | vim ~/.bashrc | ||
+ | export DOCKER_HOST=tcp://localhost:2375 | ||
+ | |||
+ | </pre> | ||
+ | |||
+ | https://stackoverflow.com/questions/27763340/docker-opts-do-not-work-in-config-file-etc-default-docker | ||
+ | |||
+ | https://stackoverflow.com/questions/44678725/cannot-connect-to-the-docker-daemon-at-unix-var-run-docker-sock-is-the-docker | ||
+ | |||
+ | 其它办法 没过过 正确的是将当前用户加入docker组 | ||
+ | jing@ubuntu:/tmp/docker$ sudo gpasswd -a ${USER} docker | ||
+ | |||
+ | =see also= | ||
+ | 官方文档永远是最帅的 | ||
+ | |||
+ | https://docs.docker.com/compose/install/#install-compose | ||
+ | |||
+ | [https://www.jianshu.com/p/658911a8cff3 Docker:Docker Compose 详解] | ||
+ | |||
+ | [https://www.cnblogs.com/moxiaoan/p/9299404.html Docker-compose常用命令] | ||
+ | |||
+ | [https://blog.csdn.net/wanghailong041/article/details/52162293 Docker-compose命令详解] | ||
+ | |||
+ | https://docs.docker.com/compose/gettingstarted/ | ||
+ | |||
+ | https://blog.csdn.net/zhugeaming2018/article/details/81518327 | ||
+ | |||
+ | [https://www.cnblogs.com/regit/p/8309959.html docker-compose常用命令] | ||
+ | |||
+ | [https://www.jianshu.com/p/658911a8cff3 Docker:Docker Compose 详解] | ||
+ | |||
+ | |||
+ | [https://beginor.github.io/2017/06/08/use-compose-instead-of-run.html 使用 docker-compose 替代 docker run] | ||
+ | |||
+ | [https://www.cnblogs.com/ee900222/p/docker_5.html Docker系列之(五):使用Docker Compose编排容器] | ||
+ | |||
+ | |||
+ | [https://blog.csdn.net/u011781521/article/details/80464826 Docker(四)----Docker-Compose 详解] | ||
+ | |||
+ | [https://blog.csdn.net/u014799292/article/details/79094015 安装docker-compose并统一拉取镜像] | ||
+ | |||
+ | [https://blog.csdn.net/zhugeaming2018/article/details/81518327 『中级篇』Docker Compose的安装和基本使用(39)] | ||
+ | |||
+ | [https://blog.csdn.net/smartdt/article/details/78431618 Docker学习(6)Docker Compose介绍和编配] | ||
+ | |||
+ | [https://blog.csdn.net/hujyhfwfh2/article/details/83934415 Docker-Docker Compose] | ||
+ | |||
+ | [https://blog.csdn.net/yuzhongzi81/article/details/79295672 小白学Docker之Compose] | ||
+ | |||
+ | [https://blog.csdn.net/pushiqiang/article/details/78682323 docker-compose教程安装,使用, 快速入门] | ||
+ | |||
+ | |||
+ | [http://www.cnblogs.com/sammyliu/p/5932996.html 理解Docker(8):Docker 存储之卷(Volume)] | ||
+ | |||
+ | [http://dockone.io/article/128 深入理解Docker Volume(一)] | ||
+ | |||
+ | [http://www.cnblogs.com/zhengran/p/4212519.html 深入理解Docker Volume(一)] | ||
+ | |||
+ | [[Docker-compose搭建nginx+php+mysql]] | ||
+ | |||
+ | [[category:容器]][[category: container]] [[category: compose]] |
2019年9月27日 (五) 10:42的版本
可以 Dockerfile 创建容器,docker-compse实现部署 或者直接用官方的img 利用docker-compse实现部署
目录
- 1 introduce
- 2 Docker-compose常用命令
- 3 install
- 4 Get started with Docker Compose
- 5 常用参数
- 6 trouble
- 7 see also
introduce
Compose项目来源于之前的fig项目,使用python语言编写,与docker/swarm配合度很高。 Compose 是 Docker 容器进行编排的工具,定义和运行多容器的应用,可以一条命令启动多个容器,使用Docker Compose不再需要使用shell脚本来启动容器。 Compose 通过一个配置文件来管理多个Docker容器,在配置文件中,所有的容器通过services来定义,然后使用docker-compose脚本来启动,停止和重启应用,和应用中的服务以及所有依赖服务的容器,非常适合组合使用多个容器进行开发的场景。 docker-compose默认的模板文件是 docker-compose.yml,其中定义的每个服务都必须通过 image 指令指定镜像或 build 指令(需要 Dockerfile)来自动构建。 其它大部分指令都跟 docker run 中的类似。 如果使用 build 指令,在 Dockerfile 中设置的选项(例如:CMD, EXPOSE, VOLUME, ENV 等) 将会自动被获取,无需在 docker-compose.yml 中再次设置。 使用Compose 基本上分为三步: 1.Dockerfile 定义应用的运行环境 2.docker-compose.yml 定义组成应用的各服务 3.docker-compose up 启动整个应用 --------------------- Compose 项目是 Docker 官方的开源项目,负责实现对 Docker 容器集群的快速编排。 在日常工作中,经常会碰到需要多个容器相互配合来完成某项任务的情况。例如要实现一个 Web 项目,除了 Web服务容器本身,往往还需要再加上后端的数据库服务容器,甚至还包括负载均衡容器等。 Compose 恰好满足了这样的需求。它允许用户通过一个单独的 docker-compose.yml 模板文件(YAML 格式)来定义一组相关联的应用容器为一个项目。 Compose 中有两个重要的概念: 服务 (service):一个应用的容器,实际上可以包括若干运行相同镜像的容器实例。 项目 (project):由一组关联的应用容器组成的一个完整业务单元,在 docker-compose.yml 文件中定义。
Docker-compose常用命令
docker-compose --help docker-compose up -d nginx 构建建启动nignx容器 # #这个是写在yml里面的server名 查看 文件, 不是容器名 docker-compose exec nginx bash 登录到nginx容器中 docker-compose down 删除所有nginx容器,镜像 docker-compose ps 显示所有容器 docker-compose restart nginx 重新启动nginx容器 #这个是写在yml里面的server名 不是容器名 docker-compose run --no-deps --rm php-fpm php -v 在php-fpm中不启动关联容器,并容器执行php -v 执行完成后删除容器 docker-compose build nginx 构建镜像 。 docker-compose build --no-cache nginx 不带缓存的构建。 docker-compose logs nginx 查看nginx的日志 docker-compose logs -f nginx 查看nginx的实时日志 docker-compose config -q 验证(docker-compose.yml)文件配置,当配置正确时,不输出任何内容,当文件配置错误,输出错误信息。 docker-compose events --json nginx 以json的形式输出nginx的docker日志 docker-compose pause nginx 暂停nignx容器 docker-compose unpause nginx 恢复ningx容器 docker-compose rm nginx 删除容器(删除前必须关闭容器) docker-compose stop nginx 停止nignx容器 docker-compose start nginx 启动nignx容器 note: docker-compose 知道补充 docker-compose ps Name Command State Ports -------------------------------------------------------------------------------------------------------------------- docker4jenkins_jenkins_1 /sbin/tini -- /usr/local/b ... Up 0.0.0.0:50000->50000/tcp, 0.0.0.0:7099->8080/tcp docker-compose stop jenkins #后面是加server名 服务名称 docker-compose.yml services: jenkins: image: jenkins/jenkins:lts 所以 docker-compose start jenkins
install
#方法1 如果是国内网络太慢 可以把变量换成对应的值 然后先在desktop 下载回来 sudo curl -L "https://github.com/docker/compose/releases/download/1.24.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose #方法 2 有时axel最快了 #https://github.com/docker/compose/releases/download/1.24.0/docker-compose-linux-x86_64 -o /usr/local/bin/docker-compose sudo chmod +x /usr/local/bin/docker-compose sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose $ docker-compose --version docker-compose version 1.24.0, build 0aa59064
Get started with Docker Compose
Step 1: Setup
1.Create a directory for the project:
mkdir composetest && cd composetest
Create a file called app.py in your project directory and paste this in:
import time import redis from flask import Flask app = Flask(__name__) cache = redis.Redis(host='redis', port=6379) def get_hit_count(): retries = 5 while True: try: return cache.incr('hits') except redis.exceptions.ConnectionError as exc: if retries == 0: raise exc retries -= 1 time.sleep(0.5) @app.route('/') def hello(): count = get_hit_count() return 'Hello World! I have been seen {} times.\n'.format(count) if __name__ == "__main__": app.run(host="0.0.0.0", debug=True)
3.Create another file called requirements.txt in your project directory and paste this in
flask redis
Step 2: Create a Dockerfile
FROM python:3.4-alpine ADD . /code WORKDIR /code RUN pip install -r requirements.txt CMD ["python", "app.py"]
Step 3: Define services in a Compose file
Create a file called docker-compose.yml
version: '3' services: web: build: . ports: - "5000:5000" redis: image: "redis:alpine"
Step 4: Build and run your app with Compose
docker-compose up -d# (后台运行这些containers) 还是这个好 #马上访问就行了 哈哈 不用一直等 web_1 | Use a production WSGI server instead. web_1 | * Debug mode: on web_1 | * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit) web_1 | * Restarting with stat Enter http://0.0.0.0:5000/ in a browser to see the application running.
Step 5: Edit the Compose file to add a bind mount
Edit docker-compose.yml in your project directory to add a bind mount for the web service:
version: '3' services: web: build: . ports: - "5000:5000" volumes: - .:/code redis: image: "redis:alpine" #胶布的端口是机器的5000 后面的端口是容器的5000 volumes 也是这样顺序
The new volumes key mounts the project directory (current directory) on the host to /code inside the container, allowing you to modify the code on the fly, without having to rebuild the image 把当前目录mounts 到容器的/code
volumes: - ~/test/composetest:/code # 将主机的当前目录映射为容器内部的 /code数据卷 把当前目录 ~/test/composetest mounts 到容器的/code
eg: #容器 evan@latop:~/test/composetest$ docker exec -it b4f882c81522 /bin/sh /code # pwd /code /code # ls Dockerfile app.py app.py~ docker-compose.yml docker-compose.yml~ requirements.txt #母机 evan@latop:~/test/composetest$ ls app.py app.py~ docker-compose.yml docker-compose.yml~ Dockerfile requirements.txt
Step 6: Re-build and run the app with Compose
From your project directory, type docker-compose up to build the app with the updated Compose file, and run it.
Step 7: Update the application
Because the application code is now mounted into the container using a volume, you can make changes to its code and see the changes instantly, without having to rebuild the image. 可见 有mount 后 只改变母机的不用rebuild 了
Change the greeting in app.py and save it. For example, change the Hello World! message to Hello from Docker!:
return 'Hello from Docker! I have been seen {} times.\n'.format(count)
Refresh the app in your browser. The greeting should be updated, and the counter should still be incrementing.
常用参数
links/external_links参数
-link 同一个物理机之前 external_links Docker平台的组合功能提供了一个叫“外部链接”(“external_links”)的设置选项,能用来接连那些在不同组合文件中定义的容器: eg hostname: rabbitmq02 extra_hosts: - "rabbitmq01:10.3.10.141" #前面是hostname 后面是ip
Docker的组合功能:如何用external_links选项连接组合文件外部定义的容器
trouble
Question
docker-compose up ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running? If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.
solve
Use the command sudo systemctl edit docker.service to open an override file for docker.service in a text editor. Add or modify the following lines, substituting your own values. [Service] ExecStart= ExecStart=/usr/bin/dockerd -H tcp://127.0.0.1:2375 -H unix:///var/run/docker.sock Save the file. Reload the systemctl configuration. $ sudo systemctl daemon-reload Restart Docker: $ sudo systemctl restart docker.service Check to see whether the change was honored by reviewing the output of netstat to confirm dockerd is listening on the configured port. $ sudo netstat -lntp | grep dockerd tcp 0 0 127.0.0.1:2375 0.0.0.0:* LISTEN 3758/dockerd vim ~/.bashrc export DOCKER_HOST=tcp://localhost:2375
其它办法 没过过 正确的是将当前用户加入docker组 jing@ubuntu:/tmp/docker$ sudo gpasswd -a ${USER} docker
see also
官方文档永远是最帅的
https://docs.docker.com/compose/install/#install-compose
https://docs.docker.com/compose/gettingstarted/
https://blog.csdn.net/zhugeaming2018/article/details/81518327
使用 docker-compose 替代 docker run
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