docker中通过nginx+confd动态生成配置的解决方案

这篇文章主要介绍了docker:nginx+confd动态生成配置,本文给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下

当我们项目越来越多时手动去服务器修改nginx配置是一件很麻烦而且可能出错的事情。我们可以通过nginx+confd+配置中心实现一套方案避免出错并减少繁琐的流程。

首先直接上nginx+confd的dockerfile

FROM nginx:1.21.6 # 拷贝confd二进制可执行文件 https://github.com/kelseyhightower/confd/releases/tag/v0.16.0 COPY ./confd-0.16.0-linux-amd64 /usr/local/bin/confd # 拷贝wait-for脚本 https://github.com/Eficode/wait-for COPY ./wait-for / # 安装nc支持wait-for脚本 RUN apt-get update \ && DEBIAN_FRONTEND=noninteractive apt-get install -y \ net-tools \ && apt-get clean \ && rm -rf /var/lib/apt/lists/* RUN apt-get update \ && DEBIAN_FRONTEND=noninteractive apt-get install -y \ netcat \ && apt-get clean \ && rm -rf /var/lib/apt/lists/* # 创建配置文件目录 RUN mkdir -p /etc/confd/conf.d \ # 给可执行权限 && chmod +x /usr/local/bin/confd \ && chmod 777 /wait-for \ # 使用脚本启动多进程 && echo "#!/bin/bash" >> start.sh \ && echo "nohup /usr/local/bin/confd -config-file /etc/confd/conf/confd.toml &" >> start.sh \ && echo "nginx -g 'daemon off;'" >> start.sh \ && chmod 664 ./start.sh CMD ["bash", "start.sh"]

如果不想自己生成可以用:

https://hub.docker.com/repository/docker/lablelan/nginx-confd

这里使用docker-compose来演示如何使用nginx+confd+etcd+etcdkeeper通过图形化修改nginx配置

version: '2' networks: app-tier: driver: bridge ipam: driver: default config: - subnet: 172.22.0.0/16 services: Etcd: image: 'bitnami/etcd:3.5.2' environment: - ALLOW_NONE_AUTHENTICATION=yes - ETCD_ADVERTISE_CLIENT_URLS=http://etcd:2379 ports: - 2379:2379 - 2380:2380 networks: app-tier: ipv4_address: 172.22.0.2 EtcdKeeper: image: 'deltaprojects/etcdkeeper:latest' - 8000:8080 ipv4_address: 172.22.0.3 Nginx: image: 'lablelan/nginx-confd' command: sh -c '/wait-for Etcd:2379 -- bash start.sh' depends_on: - Etcd volumes: - "./confd.toml:/etc/confd/conf/confd.toml" - "./nginx.tmpl:/etc/confd/templates/nginx.tmpl" - "./myapp-nginx.toml:/etc/confd/conf.d/myapp-nginx.toml" - "./nginx.conf:/etc/nginx/nginx.conf" - "./conf.d:/etc/nginx/conf.d" - 80:80 ipv4_address: 172.22.0.4

启动后当通过etcdkeeper创建或更新/myapp/services/web/www/1会动态生成nginx配置(80端口转发8080端口)并自动生效。这里ip配置的是内网ip不使用127.0.0.1，因为服务并不跑在nginx容器上(注意www.lablelan.com我本地hosts设置成了127.0.0.1)