标签：运行 hit round from 定义 ida build contain res
[root@docker01 ~]# docker run -d --name mysql -v mysql-data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=root -e MYSQL_DATABASE=wordpress mysql
05e9c5733c1784dc86582e633796e154118bbbefeadb4394bfff82d8a06054c4
官网地址：https://hub.docker.com/_/wordpress/
[root@docker01 ~]# docker run -d -e WORDPRESS_DB_HOST=mysql:3306 --link mysql -p 8080:80 wordpress 97443a6db7650fe3ebd2c016008455238f95b692597012e05532d58363e32ef3
官网介绍：https://docs.docker.com/compose/compose-file/
version2只支持单机
version3可以支持多机（建议使用）
docker-compose的三大概念：
例(从docker hub拉取镜像)：
services: db: image: postgres:9.4 volumes: - "db-data:/var/lib/postgresql/data" networks: - back-tier
等价于docker run命令：
docker run -d --network back-tier -v db-data:/var/lib/postgresql/data postgres:9.4
例（本地构建dockerfile）：
services:
worker:
build: ./worker
links:
- db
- redis
networks:
- back-tier
创建一个volume，或者将volume挂载到容器：
volumes:
mysql-data:
等价于：
docker volume create mysql-data
创建一个网络，或者为容器指定一个网络
networks: my-bridge: driver: bridge
等价于：
docker network create my-bridge
MAC和windows在安装docker时已经安装好docker-compose了。
在linux上安装docker-compose
官网地址：https://docs.docker.com/compose/install/
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
chmox +X /usr/local/bin/docker-compose
docker-compose --version
yum -y install epel-release yum -y install python-pip
pip install docker-compose
docker-compose --version
build Build or rebuild services bundle Generate a Docker bundle from the Compose file config Validate and view the Compose file create Create services down Stop and remove containers, networks, images, and volumes events Receive real time events from containers exec Execute a command in a running container help Get help on a command images List images kill Kill containers logs View output from containers pause Pause services port Print the public port for a port binding ps List containers pull Pull service images push Push service images restart Restart services rm Remove stopped containers run Run a one-off command scale Set number of containers for a service start Start services stop Stop services top Display the running processes unpause Unpause services up Create and start containers version Show the Docker-Compose version information
案例：通过docker-compose安装wordpress
[root@docker02 wordpress]# cat docker-compose.yml version: ‘3‘ services: wordpress: image: wordpress ports: - 8080:80 environment: WORDPRESS_DB_HOST: mysql WORDPRESS_DB_PASSWORD: root networks: - my-bridge mysql: image: mysql environment: MYSQL_ROOT_PASSWORD: root MYSQL_DATABASE: wordpress volumes: - mysql-data:/var/lib/mysql networks: - my-bridge volumes: mysql-data: networks: my-bridge: driver: bridge
docker-compose up
[root@docker02 wordpress]# docker-compose up -d Starting wordpress_wordpress_1 ... done Starting wordpress_mysql_1 ... done
[root@docker02 wordpress]# docker-compose ps Name Command State Ports ------------------------------------------------------------------------------------- wordpress_mysql_1 docker-entrypoint.sh mysqld Up 3306/tcp, 33060/tcp wordpress_wordpress_1 docker-entrypoint.sh apach ... Up 0.0.0.0:8080->80/tcp
docker-compose down
注意：后面跟的是在docker-compose.yml中定义的service名
[root@docker02 wordpress]# docker-compose exec mysql bash
docker-compose命令中有一个参数：scale，可以通过这个参数来调节容器的运行数量！
准备flask-redis案例（参考文章：https://www.cnblogs.com/liuguangjiji/p/10629410.html）
（1）python程序文件app.py
from flask import Flask from redis import Redis import os import socket app = Flask(__name__) redis = Redis(host=os.environ.get(‘REDIS_HOST‘, ‘127.0.0.1‘), port=6379) @app.route(‘/‘) def hello(): redis.incr(‘hits‘) return ‘Hello Container World! I have been seen %s times and my hostname is %s.\n‘ % (redis.get(‘hits‘),socket.gethostname()) if __name__ == "__main__": app.run(host="0.0.0.0", port=5000, debug=True)
（2）Dockerfile
FROM python:2.7 LABEL maintainer="this is test message" COPY . /app/ WORKDIR /app RUN pip install flask redis EXPOSE 5000 CMD ["python","app.py"]
（3）docker-compose.yml
version: ‘3‘ services: redis: image: redis web: build: context: . dockerfile: Dockerfile environment: REDIS_HOST: redis
docker-compose up -d
[root@docker01 chapter6]# docker-compose ps Name Command State Ports -------------------------------------------------------------------- chapter6_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp chapter6_web_1 python app.py Up 5000/tcp
docker-compose up --scale web=3 -d
[root@docker01 chapter6]# docker-compose ps Name Command State Ports -------------------------------------------------------------------- chapter6_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp chapter6_web_1 python app.py Up 5000/tcp chapter6_web_2 python app.py Up 5000/tcp chapter6_web_3 python app.py Up 5000/tcp
（1）app.py
from flask import Flask from redis import Redis import os import socket app = Flask(__name__) redis = Redis(host=os.environ.get(‘REDIS_HOST‘, ‘127.0.0.1‘), port=6379) @app.route(‘/‘) def hello(): redis.incr(‘hits‘) return ‘Hello Container World! I have been seen %s times and my hostname is %s.\n‘ % (redis.get(‘hits‘),socket.gethostname()) if __name__ == "__main__": app.run(host="0.0.0.0", port=80, debug=True)
（2）Dockerfile
FROM python:2.7 LABEL maintaner="this is test message" COPY . /app WORKDIR /app RUN pip install flask redis EXPOSE 80 CMD [ "python", "app.py" ]
（3）docker-compose.yml
version: "3" services: redis: image: redis web: build: context: . dockerfile: Dockerfile environment: REDIS_HOST: redis lb: image: dockercloud/haproxy links: - web ports: - 8080:80 volumes: - /var/run/docker.sock:/var/run/docker.sock
docker-compose up -d
#查看docker-compose启动的容器，共有三个 [root@docker01 chapter6]# docker-compose ps Name Command State Ports --------------------------------------------------------------------------------------------------- chapter6_lb_1 /sbin/tini -- dockercloud- ... Up 1936/tcp, 443/tcp, 0.0.0.0:8080->80/tcp chapter6_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp chapter6_web_1 python app.py Up 5000/tcp #访问自身8080端口 [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 1 times and my hostname is 2e7fe9be9d40. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 2 times and my hostname is 2e7fe9be9d40. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 3 times and my hostname is 2e7fe9be9d40.
[root@docker01 chapter6]# docker-compose up --scale web=3 -d chapter6_redis_1 is up-to-date Starting chapter6_web_1 ... done Creating chapter6_web_2 ... done Creating chapter6_web_3 ... done chapter6_lb_1 is up-to-date [root@docker01 chapter6]# docker-compose ps Name Command State Ports --------------------------------------------------------------------------------------------------- chapter6_lb_1 /sbin/tini -- dockercloud- ... Up 1936/tcp, 443/tcp, 0.0.0.0:8080->80/tcp chapter6_redis_1 docker-entrypoint.sh redis ... Up 6379/tcp chapter6_web_1 python app.py Up 5000/tcp chapter6_web_2 python app.py Up 5000/tcp chapter6_web_3 python app.py Up 5000/tcp
[root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 4 times and my hostname is 2e7fe9be9d40. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 5 times and my hostname is b087d3960be1. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 6 times and my hostname is 986d2584749b. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 7 times and my hostname is 2e7fe9be9d40. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 8 times and my hostname is b087d3960be1. [root@docker01 chapter6]# curl 127.0.0.1:8080 Hello Container World! I have been seen 9 times and my hostname is 986d2584749b.
已实现扩容和负载均衡，实验过程到此结束~~
标签：运行 hit round from 定义 ida build contain res
原文地址：https://www.cnblogs.com/liuguangjiji/p/10631634.html
