二十二、Docker 部署 Nginx 环境

Nginx 是当下最流行的 Web 服务器软件之一,以高性能著称。Docker 部署 Nginx 环境有两种方式:通过 Dockerfile 构建 和 从 Docker Hub 仓库拉取

一 使用 docker pull nginx 拉取 Nginx 镜像

这是最简单的方式,开箱即用

1、 使用dockersearchnginx命令列出docker.io上所有的Nginx有关的镜像;

    [root@pottercoding.cn ~]# docker search nginx
    NAME                                                   DESCRIPTION                                     STARS               OFFICIAL            AUTOMATED
    nginx                                                  Official build of Nginx.                        8564                [OK]                
    jwilder/nginx-proxy                                    Automated Nginx reverse proxy for docker con…   1337                                    [OK]
    richarvey/nginx-php-fpm                                Container running Nginx + PHP-FPM capable of…   547                                     [OK]
    jrcs/letsencrypt-nginx-proxy-companion                 LetsEncrypt container to use with nginx as p…   371                                     [OK]
    kong                                                   Open-source Microservice & API Management la…   188                 [OK]                
    webdevops/php-nginx                                    Nginx with PHP-FPM                              103                                     [OK]
    kitematic/hello-world-nginx                            A light-weight nginx container that demonstr…   99                                      
    bitnami/nginx                                          Bitnami nginx Docker Image                      52                                      [OK]
    zabbix/zabbix-web-nginx-mysql                          Zabbix frontend based on Nginx web-server wi…   51                                      [OK]
    1and1internet/ubuntu-16-nginx-php-phpmyadmin-mysql-5   ubuntu-16-nginx-php-phpmyadmin-mysql-5          35                                      [OK]
    linuxserver/nginx                                      An Nginx container, brought to you by LinuxS…   35                                      
    tobi312/rpi-nginx                                      NGINX on Raspberry Pi / armhf                   19                                      [OK]
    nginxdemos/nginx-ingress                               NGINX Ingress Controller for Kubernetes . Th…   11                                      
    blacklabelops/nginx                                    Dockerized Nginx Reverse Proxy Server.          9                                       [OK]
    wodby/drupal-nginx                                     Nginx for Drupal container image                9                                       [OK]
    webdevops/nginx                                        Nginx container                                 8                                       [OK]
    centos/nginx-18-centos7                                Platform for running nginx 1.8 or building n…   6                                       
    nginxdemos/hello                                       NGINX webserver that serves a simple page co…   6                                       [OK]
    1science/nginx                                         Nginx Docker images that include Consul Temp…   4                                       [OK]
    centos/nginx-112-centos7                               Platform for running nginx 1.12 or building …   3                                       
    pebbletech/nginx-proxy                                 nginx-proxy sets up a container running ngin…   2                                       [OK]
    travix/nginx                                           NGinx reverse proxy                             1                                       [OK]
    toccoag/openshift-nginx                                Nginx reverse proxy for Nice running on same…   1                                       [OK]
    mailu/nginx                                            Mailu nginx frontend                            0                                       [OK]
    ansibleplaybookbundle/nginx-apb                        An APB to deploy NGINX                          0                                       [OK]

有很多版本,我们选择官方的 nginx

2、 拉取最新的nginx标签;

    [root@pottercoding.cn ~]# docker pull nginx:latest
    latest: Pulling from library/nginx
    Digest: sha256:0fb320e2a1b1620b4905facb3447e3d84ad36da0b2c8aa8fe3a5a81d1187b884
    Status: Image is up to date for nginx:latest

3、 下载完成后,可以在本地镜像列表里找到REPOSITORY为nginx,标签为latest的镜像;

    [root@pottercoding.cn ~]# docker images nginx
    REPOSITORY  TAG     IMAGE ID      CREATED      SIZE
    nginx       latest  ae513a47849c  4 weeks ago  109MB

二、 通过 Dockerfile 文件构建

这种方式比较复杂,但可以一定程度的定制和熟悉如何编译安装 Nginx

1、 创建文件和目录;

创建目录 **nginx** 用于存放后面的相关东西

    [root@pottercoding.cn ~]# mkdir -p nginx/www nginx/logs nginx/conf

<table> 
 <thead> 
  <tr> 
   <th align="left">目录</th> 
   <th align="left">说明</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td align="left">nginx/www</td> 
   <td align="left">该目录将映射为 nginx 容器配置的虚拟目录</td> 
  </tr> 
  <tr> 
   <td align="left">nginx/logs</td> 
   <td align="left">该目录将映射为 nginx 容器的日志目录</td> 
  </tr> 
  <tr> 
   <td align="left">nginx</td> 
   <td align="left">conf</td> 
  </tr> 
 </tbody> 
</table>

2、 创建nginx/Dockerfile文件;

    [root@pottercoding.cn ~]# touch nginx/Dockerfile
    [root@pottercoding.cn ~]# cd nginx
    [root@pottercoding.cn nginx]# vi Dockerfile

然后将下面的内容拷贝到 Dockerfile 文件中

    FROM debian:stretch-slim
    LABEL maintainer="NGINX Docker Maintainers <docker-maint@nginx.com>"
    ENV NGINX_VERSION 1.13.12-1~stretch
    ENV NJS_VERSION   1.13.12.0.2.0-1~stretch
    RUN set -x \
        && apt-get update \
        && apt-get install --no-install-recommends --no-install-suggests -y gnupg1 apt-transport-https ca-certificates \
        && \
        NGINX_GPGKEY=573BFD6B3D8FBC641079A6ABABF5BD827BD9BF62; \
        found=''; \
        for server in \
            ha.pool.sks-keyservers.net \
            hkp://keyserver.ubuntu.com:80 \
            hkp://p80.pool.sks-keyservers.net:80 \
            pgp.mit.edu \
        ; do \
            echo "Fetching GPG key $NGINX_GPGKEY from $server"; \
            apt-key adv --keyserver "$server" --keyserver-options timeout=10 --recv-keys "$NGINX_GPGKEY" && found=yes && break; \
        done; \
        test -z "$found" && echo >&2 "error: failed to fetch GPG key $NGINX_GPGKEY" && exit 1; \
        apt-get remove --purge --auto-remove -y gnupg1 && rm -rf /var/lib/apt/lists/* \
        && dpkgArch="$(dpkg --print-architecture)" \
        && nginxPackages=" \
            nginx=${NGINX_VERSION} \
            nginx-module-xslt=${NGINX_VERSION} \
            nginx-module-geoip=${NGINX_VERSION} \
            nginx-module-image-filter=${NGINX_VERSION} \
            nginx-module-njs=${NJS_VERSION} \
        " \
        && case "$dpkgArch" in \
            amd64|i386) \
    arches officialy built by upstream
                echo "deb https://nginx.org/packages/mainline/debian/ stretch nginx" >> /etc/apt/sources.list.d/nginx.list \
                && apt-get update \
                ;; \
            *) \
    we're on an architecture upstream doesn't officially build for
    let's build binaries from the published source packages
                echo "deb-src https://nginx.org/packages/mainline/debian/ stretch nginx" >> /etc/apt/sources.list.d/nginx.list \
                \
    new directory for storing sources and .deb files
                && tempDir="$(mktemp -d)" \
                && chmod 777 "$tempDir" \
    (777 to ensure APT's "_apt" user can access it too)
                \
    save list of currently-installed packages so build dependencies can be cleanly removed later
                && savedAptMark="$(apt-mark showmanual)" \
                \
    build .deb files from upstream's source packages (which are verified by apt-get)
                && apt-get update \
                && apt-get build-dep -y $nginxPackages \
                && ( \
                    cd "$tempDir" \
                    && DEB_BUILD_OPTIONS="nocheck parallel=$(nproc)" \
                        apt-get source --compile $nginxPackages \
                ) \
    we don't remove APT lists here because they get re-downloaded and removed later
                \
    reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
    (which is done after we install the built packages so we don't have to redownload any overlapping dependencies)
                && apt-mark showmanual | xargs apt-mark auto > /dev/null \
                && { [ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; } \
                \
    create a temporary local APT repo to install from (so that dependency resolution can be handled by APT, as it should be)
                && ls -lAFh "$tempDir" \
                && ( cd "$tempDir" && dpkg-scanpackages . > Packages ) \
                && grep '^Package: ' "$tempDir/Packages" \
                && echo "deb [ trusted=yes ] file://$tempDir ./" > /etc/apt/sources.list.d/temp.list \
    work around the following APT issue by using "Acquire::GzipIndexes=false" (overriding "/etc/apt/apt.conf.d/docker-gzip-indexes")
      Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)
      ...
      E: Failed to fetch store:/var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages  Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)
                && apt-get -o Acquire::GzipIndexes=false update \
                ;; \
        esac \
        \
        && apt-get install --no-install-recommends --no-install-suggests -y \
                            $nginxPackages \
                            gettext-base \
        && apt-get remove --purge --auto-remove -y apt-transport-https ca-certificates && rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/nginx.list \
        \
    if we have leftovers from building, let's purge them (including extra, unnecessary build deps)
        && if [ -n "$tempDir" ]; then \
            apt-get purge -y --auto-remove \
            && rm -rf "$tempDir" /etc/apt/sources.list.d/temp.list; \
        fi
    forward request and error logs to docker log collector
    RUN ln -sf /dev/stdout /var/log/nginx/access.log \
        && ln -sf /dev/stderr /var/log/nginx/error.log
    EXPOSE 80
    STOPSIGNAL SIGTERM
    CMD ["nginx", "-g", "daemon off;"]

3、 使用dockerbuild命令通过Dockerfile创建镜像souyunku/nginx:jessie-1.13.12

    [root@pottercoding.cn ~]# docker build -t souyunku/nginx:1.13.12-1-stretch .
    Sending build context to Docker daemon  8.704kB
    Step 1/9 : FROM debian:stretch-slim
    stretch-slim: Pulling from library/debian
    f2aa67a397c4: Already exists 
    Digest: sha256:b7da507acebb30938b84d38e5adec9755fa3a41d78527ecdc2440c31c4730b11
    Status: Downloaded newer image for debian:stretch-slim
    ...

4、 创建完成后,可以在本地的镜像列表里查找到刚刚创建的镜像;

    [root@pottercoding.cn ~]# docker images souyunku/nginx:1.13.12-1-stretch
    REPOSITORY  TAG                IMAGE ID     CREATED            SIZE
    souyunku/nginx  1.13.12-1-stretch  a5ea477e09b9 About a minute ago 109MB

运行 souyunku/nginx:1.13.12-1-stretch 镜像创建容器

1、 在当前目录的www目录下新建文件index.html输入以下内容;

    <!DOCTYPE html>
    <meta charset="utf-8" />
    <title>pottercoding.cn 程序员波特,程序员编程资料站,教程 </title>
    <h1>Hello pottercoding.cn 程序员波特,程序员编程资料站</h1>
    <p>pottercoding.cn 程序员波特,程序员编程资料站的网址是:pottercoding.cn </p>

2、 在当前目录的conf目录下新建文件nginx.conf输入以下内容;

    worker_processes  1;
    events {
        worker_connections  1024;
    }
    http {
        include       mime.types;
        default_type  application/octet-stream;
        sendfile        on;
        tcp_nopush     on;
       keepalive_timeout  0;
        keepalive_timeout  65;
        gzip  on;
        server {
            listen       80;
            server_name  localhost;
            location / {
                root   /www;
                index  index.html index.htm index.php;
            }
        }
    }

3、 使用下面的命令运行我们刚刚创建的souyunku/nginx:1.13.12-1-stretch镜像;

    [root@pottercoding.cn nginx]# docker run -p 80:80 --name my-nginx -v $PWD/www:/www -v $PWD/conf/nginx.conf:/etc/nginx/nginx.conf -v $PWD/logs:/wwwlogs  -d souyunku/nginx:1.13.12-1-stretch  
    8c232bd675d742a313ea7e222e3ef1ca864c76815083451da7f89118094c6815

<table> 
 <thead> 
  <tr> 
   <th align="left">参数</th> 
   <th align="left">说明</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td align="left">-p 80:80</td> 
   <td align="left">将容器的 80 端口映射到主机的 80 端口</td> 
  </tr> 
  <tr> 
   <td align="left">--name mynginx</td> 
   <td align="left">将容器命名为 my-nginx</td> 
  </tr> 
  <tr> 
   <td align="left">-v $PWD/www:/www</td> 
   <td align="left">将当前目录下的 www 挂载到容器的 /www</td> 
  </tr> 
  <tr> 
   <td align="left">-v $PWD/conf/nginx.conf:/etc/nginx/nginx.conf</td> 
   <td align="left">将当前目录下的 nginx.conf 挂载到容器的 /etc/nginx/nginx.conf</td> 
  </tr> 
  <tr> 
   <td align="left">-v $PWD/logs:/wwwlogs</td> 
   <td align="left">将主机中当前目录下的 logs 挂载到容器的 /wwwlogs</td> 
  </tr> 
 </tbody> 
</table>

查看容器启动情况

可以使用 docker ps 命令可以查看容器启动的情况

[root@pottercoding.cn ~]# docker ps 
CONTAINER ID        IMAGE                          COMMAND                  CREATED             STATUS              PORTS                     NAMES
8c232bd675d7        souyunku/nginx:1.13.12-1-stretch   "nginx -g 'daemon of…"   6 seconds ago       Up 20 seconds       0.0.0.0:80->80/tcp        my-nginx
d07b599f11e4        jcdemo/flaskapp                "python /src/app.py"     11 hours ago        Up 11 hours         0.0.0.0:32768->5000/tcp   hardcore_lalande

通过浏览器访问 http://localhost 输出如下