【Docker】基于Dockerfile搭建LNMP架构

谁践踏了优雅 2024-04-06 14:52 115阅读 0赞

## 一、项目环境 ##

公司在实际的生产环境中，需要使用Docker 技术在一台主机上创建LNMP服务并运行Wordpress网站平台。然后对此服务进行相关的性能调优和管理工作。

### 1. 环境配置 ###

<table> 
 <thead> 
  <tr> 
   <th>主机</th> 
   <th>操作系统</th> 
   <th>IP地址</th> 
   <th>主要软件</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>Docker</td> 
   <td>CentOS 7.3 x86_64</td> 
   <td>192.168.145.15</td> 
   <td>Docker 19.03</td> 
  </tr> 
 </tbody> 
</table>

**容器ip地址规划**

nginx容器  ip地址：172.18.0.10
    mysql容器  ip地址：172.18.0.20
    php容器    ip地址：172.18.0.30

### 2. 任务需求 ###

（1）使用Docker构建LNMP环境并运行Wordpress网站平台。

（2）限制Nginx容器最多使用500Mb的内存和1G的Swap。

（3）限制Mysql容器写 /dev/sda 的速率为 10 MB/s。

（4）将所有容器进行快照，然后将Docker镜像打包成tar包备份到本地。

## 二、 部署过程 ##

### 1. 环境配置 ###

#前提本地已经安装docker，配置lnmp的文件目录
     cd /opt/
    mkdir lnmp
    cd lnmp/
    mkdir nginx mysql php

![在这里插入图片描述][5bc66c3e00be450faa55c43b32b2f5ae.png_pic_center]

#构建yum安装的依赖包容器
    cd /opt/lnmp/
    mkdir centos
    cd centos/
    vim Dockerfile
    
    FROM centos:7
    #nginx安装包
    RUN yum install -y pcre-devel \
    zlib-devel \
    openssl-devel \
    gcc \
    gcc-c++ \
    make \
    #mysql安装包
    ncurses \
    ncurses-devel \
    bison \
    cmake \
    #php安装包
    gd \
    libjpeg libjpeg-devel \
    libpng libpng-devel \
    freetype freetype-devel \
    libxml2 libxml2-devel \
    zlib zlib-devel \
    curl curl-devel \
    openssl openssl-devel

![在这里插入图片描述][321d6631ccf24395a585cb011d90e8d7.png_pic_center]

#安装镜像
    docker build -t centos7:pack .
    docker images

![\[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-WjdDZ7pR-1690246227837)(C:\\Users\\86138\\AppData\\Roaming\\Typora\\typora-user-images\\image-20230724185537147.png)\]][img-WjdDZ7pR-1690246227837_C_Users_86138_AppData_Roaming_Typora_typora-user-images_image-20230724185537147.png]

### 2. 部署构建 nginx 容器 ###

#nginx目录下已上传nginx安装包以及论坛安装包
    cd nginx/
    ls

![在这里插入图片描述][870f99490db14a6e907c6d944a9820bf.png_pic_center]

#修改nginx配置文件
    vim nginx.conf
    ...
        server {
        ...
            location / {
                root   html;
                index  index.php index.html index.htm;
            }
    	...
    		location ~ \.php$ {
                root           html;
                fastcgi_pass   172.18.0.30:9000;
                fastcgi_index  index.php;
                fastcgi_param  SCRIPT_FILENAME  /usr/local/nginx/html$fastcgi_script_name;
                include        fastcgi_params;
            }

![在这里插入图片描述][8a5e92604c184b23a52a22ecb4cfaf7d.png_pic_center]

#构建自定义网络
    docker network create --subnet=172.18.0.0/16 --opt "com.docker.network.bridge.name"="docker1" mylnmp
    1d31b24a91f3c5c38def3d3b853d470ebfa03605e6a14c57d6b6f0ea9939d98b
    
    docker network ls
    NETWORK ID     NAME      DRIVER    SCOPE
    7fcb679c6080   bridge    bridge    local
    e06421ce591e   host      host      local
    b084bede80c1   mylnmp    bridge    local
    ad41911b801f   none      null      local

![在这里插入图片描述][888cde43a50449f48931426d14ee245d.png_pic_center]

#创建nginx镜像
    cd /opt/lnmp/nginx
    vim Dockerfile
    FROM centos7:pack 
    MAINTAINER this is nginx image <datang 2023-07-24>
    ADD nginx-1.24.0.tar.gz /usr/local/
    RUN useradd -M -s /sbin/nologin nginx && \
    cd /usr/local/nginx-1.24.0 && \
    ./configure \
    --prefix=/usr/local/nginx \
    --user=nginx \
    --group=nginx \
    --with-http_stub_status_module && make && make install && \
    yum clean all
    COPY nginx.conf /usr/local/nginx/conf/nginx.conf
    
    FROM centos:7
    #设置多个阶段的构建，将第一阶段构建生成的软件包目录复制到第二阶段的软件包目录里
    COPY --from=0 /usr/local/nginx/ /usr/local/nginx/
    RUN useradd -M -s /sbin/nologin nginx
    EXPOSE 80
    
    CMD ["/usr/local/nginx/sbin/nginx","-g","daemon off;"]

![在这里插入图片描述][dd35407864bb4cb1b6bc3616371a1fec.png_pic_center]

#构建nginx容器
    docker build -t nginx:pack .
    docker images

![在这里插入图片描述][7b50219ce2ed4539989ae35b82cd5a03.png_pic_center]

#创建并启动容器
    docker run -d -P nginx:pack
    077368b80269fd3d871abba1cdc8249fabe3152bc85b99c3e1cf1c283fd6512e
    
    #查看容器
    docker ps -a
    CONTAINER ID   IMAGE           COMMAND                   CREATED             STATUS             PORTS                                     NAMES
    077368b80269   nginx:pack   "/usr/local/nginx/sb…"   5 seconds ago   Up 4 seconds   0.0.0.0:32768->80/tcp, :::32768->80/tcp   romantic_fermat

![在这里插入图片描述][89d3b177a11649ef820fde17b0d93c92.png_pic_center]

#浏览器访问
    http://192.168.145.15:32768/

![在这里插入图片描述][fa937b3f1a0c434783f5ddaab494954a.png_pic_center]

#解压论坛压缩包
    ls
    mkdir html
    tar xf wordpress-4.9.4-zh_CN.tar.gz 
    mv wordpress html/

![在这里插入图片描述][c6e0de6351d244d98f521650c78be321.png_pic_center]

#删除其余的容器，重新根据自定义网络创建容器
    docker rm -f $(docker ps -aq)
    
    docker run -d --name nginx --network=mylnmp --ip=172.18.0.10 -p 80:80 -v /opt/lnmp/nginx/html/:/usr/local/nginx/html/ nginx:pack
    da398761b9a04cb7bd5a48f33cfd776b8048567cc67f300d55a4b989d06a64b1
    
    docker ps -a
    CONTAINER ID   IMAGE        COMMAND                   CREATED         STATUS         PORTS                               NAMES
    da398761b9a0   nginx:pack   "/usr/local/nginx/sb…"   6 seconds ago   Up 5 seconds   0.0.0.0:80->80/tcp, :::80->80/tcp   nginx

![在这里插入图片描述][aaa5b275a58a4cd4bd130a3a76177399.png_pic_center]

### 2. 部署构建 mysql 容器 ###

#准备muysql的配置文件
    cd /opt/lnmp/mysql/
    
    ls
    mysql-boost-5.7.41.tar.gz
    
    vim my.cnf
    [client]
    port = 3306
    socket=/usr/local/mysql/mysql.sock
    
    [mysqld]
    user = mysql
    basedir=/usr/local/mysql
    datadir=/usr/local/mysql/data
    port = 3306
    character-set-server=utf8
    pid-file = /usr/local/mysql/mysqld.pid
    socket=/usr/local/mysql/mysql.sock
    bind-address = 0.0.0.0
    skip-name-resolve
    max_connections=2048
    default-storage-engine=INNODB
    max_allowed_packet=16M
    server-id = 1
    
    sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES

![在这里插入图片描述][e54cbcf8d57b46ac9aeeef6d7e10adf1.png_pic_center]

vim Dockerfile
    FROM centos7:pack
    MAINTAINER this is mysql image <datang 2023-07-24>
    ADD mysql-boost-5.7.41.tar.gz /opt/
    RUN cd /opt/mysql-5.7.41/ && \
    cmake \
    -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
    -DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \
    -DSYSCONFDIR=/etc \
    -DSYSTEMD_PID_DIR=/usr/local/mysql \
    -DDEFAULT_CHARSET=utf8  \
    -DDEFAULT_COLLATION=utf8_general_ci \
    -DWITH_EXTRA_CHARSETS=all \
    -DWITH_INNOBASE_STORAGE_ENGINE=1 \
    -DWITH_ARCHIVE_STORAGE_ENGINE=1 \
    -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
    -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
    -DMYSQL_DATADIR=/usr/local/mysql/data \
    -DWITH_BOOST=boost \
    -DWITH_SYSTEMD=1 && \
    make -j2 && make install
    
    FROM centos:7
    COPY --from=0 /usr/local/mysql/ /usr/local/mysql/
    COPY my.cnf /etc/my.cnf
    ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH
    RUN useradd -M -s /sbin/nologin  mysql && \
    chown -R mysql:mysql /usr/local/mysql/ && \
    chown mysql:mysql /etc/my.cnf && \
    /usr/local/mysql/bin/mysqld \
    --initialize-insecure \
    --user=mysql \
    --basedir=/usr/local/mysql \
    --datadir=/usr/local/mysql/data
    
    EXPOSE 3306
    CMD ["/usr/local/mysql/bin/mysqld"]

![在这里插入图片描述][d88bf1e1a257471db38ca229cb9f6534.png_pic_center]

docker build -t mysql:centos7 .

![在这里插入图片描述][00a5a50dc804405f9455ab96e8290dcc.png_pic_center]

#构建 mysql 容器，--privileged 指定root权限
    docker run -d --privileged  --network mylnmp --ip 172.18.0.20 mysql:centos7
    412c0a21662b163429257c809fbf5402769cecc7b6b7bde95d53f02e6565b36f
    
    docker ps -a

![在这里插入图片描述][914b9f1050944f9ca78428ece9c23f4f.png_pic_center]

#测试mysql
    docker exec -it 412c0a21662b bash
    ps aux
    mysql
    docker rm -f 412c0a21662b
    docker ps -a

![在这里插入图片描述][b4dd4700919a4397b48962edc63740db.png_pic_center]

#重新设置mysql的容器
    docker run -d --name mysql --privileged --network mylnmp --ip 172.18.0.20 -v /usr/local/mysql mysql:centos7 
    9d39b0103585f35e8fc22022faf33cbd94e3f3eaba1ad03dcc211e896eb42ef3
    
    docker exec -it mysql bash
    #设置登录密码
    mysqladmin -u root -p password "abc123"
    Enter password: 
    mysqladmin: [Warning] Using a password on the command line interface can be insecure.
    Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.
    
    mysql -u root -pabc123

![在这里插入图片描述][0896ef72d48542df81c3578bde2ea41f.png_pic_center]

#添加mysql授权登录
    mysql> CREATE DATABASE wordpress;
    Query OK, 1 row affected (0.00 sec)
    
    mysql> show databases;
    +--------------------+
    | Database           |
    +--------------------+
    | information_schema |
    | mysql              |
    | performance_schema |
    | sys                |
    | wordpress          |
    +--------------------+
    5 rows in set (0.00 sec)
    
    mysql> grant all on wordpress.* to 'admin'@'%' identified by 'admin123';
    Query OK, 0 rows affected, 1 warning (0.00 sec)
    
    mysql> flush privileges;
    Query OK, 0 rows affected (0.00 sec)

![在这里插入图片描述][5991d6d2066e4cd7928daf81d2413f30.png_pic_center]

### 3. 部署构建 php 容器 ###

#准备php安装包
    cd /opt/lnmp/php/
    
    ls
    php-7.1.10.tar.bz2

![在这里插入图片描述][7f1ad346e50a4af28dcc5f55692a40e0.png_pic_center]

#安装环境依赖包
    yum -y install gd \
    libjpeg libjpeg-devel \
    libpng libpng-devel \
    freetype freetype-devel \
    libxml2 libxml2-devel \
    zlib zlib-devel \
    curl curl-devel \
    openssl openssl-devel

![在这里插入图片描述][a64680569a6f424f978a547707f21c4e.png_pic_center]

#解压并编译
    tar xf php-7.1.10.tar.bz2
    
    cd php-7.1.10
    ./configure \
    --prefix=/usr/local/php \
    --with-mysql-sock=/usr/local/mysql/mysql.sock \
    --with-mysqli \
    --with-zlib \
    --with-curl \
    --with-gd \
    --with-jpeg-dir \
    --with-png-dir \
    --with-freetype-dir \
    --with-openssl \
    --enable-fpm \
    --enable-mbstring \
    --enable-xml \
    --enable-session \
    --enable-ftp \
    --enable-pdo \
    --enable-tokenizer \
    --enable-zip
    
    make -j2
    make install

![在这里插入图片描述][1f48ae2870c844a1bc6871f97b530133.png_pic_center]

#将编译安装的php相关文件复制到/opt/lnmp/php/目录下
    cd /opt/lnmp/php/
    mv /usr/local/php/etc/ /opt/lnmp/php/
    cd etc/
    mv php-fpm.conf.default  php-fpm.conf
    ls
    
    vim php-fpm.conf
    pid = run/php-fpm.pid

![在这里插入图片描述][6927a1d962e84d74ad48d64ca8d8cd8c.png_pic_center]

cd php-fpm.d/
    mv www.conf.default www.conf
    vim www.conf

![在这里插入图片描述][72408a78b75e462a99dbe33f3f8889a9.png_pic_center]

#将php相关配置文件复制到/opt/lnmp/php/目录下
    cd /opt/lnmp/php/php-7.1.10/
    mv php.ini-development /opt/lnmp/php/php.ini
    cd /opt/lnmp/php
    mv etc/php-fpm.conf  /opt/lnmp/php/
    mv etc/php-fpm.d/www.conf /opt/lnmp/php/
    
    ls
    etc  php-7.1.10  php-7.1.10.tar.bz2  php-fpm.conf  php.ini  www.conf
    
    vim php.ini
    #939行，修改时区
    date.timezone = Asia/Shanghai
    #1170行
    mysqli.default_socket = /usr/local/mysql/mysql.sock

![在这里插入图片描述][f1855c9f43cb4fcbb29f52f8991844d4.png_pic_center]

#构建php镜像
    vim Dockerfile
    FROM centos7:pack
    ADD php-7.1.10.tar.bz2 /opt
    RUN cd /opt/php-7.1.10 && \
    ./configure \
    --prefix=/usr/local/php \
    --with-mysql-sock=/usr/local/mysql/mysql.sock \
    --with-mysqli \
    --with-zlib \
    --with-curl \
    --with-gd \
    --with-jpeg-dir \
    --with-png-dir \
    --with-freetype-dir \
    --with-openssl \
    --enable-fpm \
    --enable-mbstring \
    --enable-xml \
    --enable-session \
    --enable-ftp \
    --enable-pdo \
    --enable-tokenizer \
    --enable-zip && make -j2 && make install
    COPY php.ini /usr/local/php/lib/php.ini
    COPY php-fpm.conf /usr/local/php/etc/php-fpm.conf
    COPY www.conf /usr/local/php/etc/php-fpm.d/www.conf
    
    FROM centos:7
    COPY --from=0 /usr/local/php /usr/local/php
    RUN useradd -M -s /sbin/nologin php && yum -y install gd \
    libjpeg-devel \
    libpng-devel \
    freetype-devel \
    libxml2-devel \
    zlib-devel \
    curl-devel \
    openssl-devel
    EXPOSE 9000
    CMD ["/usr/local/php/sbin/php-fpm", "-F"]

![在这里插入图片描述][22240250142644208623d4f3b67e5960.png_pic_center]

#构建php镜像
    docker build -t php:centos .

![在这里插入图片描述][e255f145c6614b6380775d8e72c01218.png_pic_center]

#查看镜像
    docker images
    REPOSITORY   TAG       IMAGE ID       CREATED             SIZE
    php          centos    b1cae07dd109   2 minutes ago       800MB
    mysql        centos7   f8c99d9f8a8a   18 minutes ago      4.24GB
    nginx        pack      ec077bb0e047   About an hour ago   208MB
    centos7      pack      5725aec209e6   About an hour ago   754MB
    centos       7         eeb6ee3f44bd   22 months ago       204MB
    
    #构建php容器
    docker run --name php -d -p 9000:9000 --network mylnmp --ip 172.18.0.30 php:centos
    ff2422bed9cdb9f733e488be2ff9b98ff9b0ca736b47ef4bf656491297ea2b37
    
    #查看容器
    docker ps -a
    CONTAINER ID   IMAGE        COMMAND                   CREATED          STATUS          PORTS                                       NAMES
    ff2422bed9cd   php:centos   "/usr/local/php/sbin…"   5 seconds ago    Up 5 seconds    0.0.0.0:9000->9000/tcp, :::9000->9000/tcp   php
    da398761b9a0   nginx:pack   "/usr/local/nginx/sb…"   57 minutes ago   Up 57 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp           nginx

![在这里插入图片描述][c679521c3dcc46a38abcd788adee1a31.png_pic_center]

#测试php网页
    cd /opt/lnmp/nginx/html/
    vim index.php
    
    cat index.php 
    <?php
    phpinfo();
    ?>

![在这里插入图片描述][e5e33abe26bd4c98ba0b0eb782a8c91f.png_pic_center]

#浏览器访问
    http://192.168.145.15/index.php

![在这里插入图片描述][b7b99e48fa2743a893dd8f71930bbd39.png_pic_center]

### 4. 连接所有容器 ###

#删除所有容器
    docker rm -f $(docker ps -aq)
    
    docker run -d --name nginx --network mylnmp --ip 172.18.0.10 -v /usr/local/nginx/html/ -p 80:80 nginx:pack
    4d9eb17785e2ce9b88152644b8a9c02674212606a3390e0c089e48269e6eac91
    
    docker run -d --name mysql --privileged --network mylnmp --ip 172.18.0.20 -v /usr/local/mysql/ mysql:centos7
    51dbe9aed78636a27457a1279e0c1b09f8298d76ae829a3f9dc0ce4bbdbd9686
    
    docker run -d --name php --network mylnmp --ip 172.18.0.30 --volumes-from nginx --volumes-from mysql -p 9000:9000  php:centos 9d134d25d84a2c418e9c41b58bfaaf30f57ccd33c56e99705ecc406e305eafb0
    
    docker ps -a
    CONTAINER ID   IMAGE           COMMAND                   CREATED         STATUS         PORTS                                       NAMES
    9d134d25d84a   php:centos      "/usr/local/php/sbin…"   2 seconds ago   Up 1 second    0.0.0.0:9000->9000/tcp, :::9000->9000/tcp   php
    51dbe9aed786   mysql:centos7   "/usr/local/mysql/bi…"   2 minutes ago   Up 2 minutes   3306/tcp                                    mysql
    4d9eb17785e2   nginx:pack      "/usr/local/nginx/sb…"   4 minutes ago   Up 4 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp           nginx
    
    #将网页和论坛配置文件上传至容器内部
    cd /opt/lnmp/nginx/html/
    
    docker cp index.php nginx:/usr/local/nginx/html/
    Successfully copied 2.05kB to nginx:/usr/local/nginx/html/
    
    docker cp wordpress/ nginx:/usr/local/nginx/html/
    Successfully copied 29.4MB to nginx:/usr/local/nginx/html/

![在这里插入图片描述][d2837d531f674585a542d03c9bb8a9ef.png_pic_center]

#浏览器访问
    http://192.168.145.15/wordpress/index.php

![在这里插入图片描述][66203282cc344432a0d954c467bdbb39.png_pic_center]

## 总结 ##

### 如何缩小镜像体积的大小 ###

1.尽可能的使用小体积的基础镜像
    2.尽可能减少Dockerfile文件中指令的数量
    3.构建镜像步骤最后添加清空系统和应用程序的缓存命令
    4.使用多阶段（多级）构建      
      FROM 第一阶段的基础镜像 [AS 别名]
      ...
      FROM 第二阶段的基础镜像
      COPY --from=别名/0 第一阶段构建的文件/目录 当前阶段的文件/目录

[5bc66c3e00be450faa55c43b32b2f5ae.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/474597f2a2cb4537a95a1e9a8852270a.png
[321d6631ccf24395a585cb011d90e8d7.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/d376423845ba4dbab08ae92188981600.png
[img-WjdDZ7pR-1690246227837_C_Users_86138_AppData_Roaming_Typora_typora-user-images_image-20230724185537147.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/728ef5a5e8c4472e8f2ae71f0b2c2361.png
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