[云原生案例1.] 构建LNMP架构并运行Wordpress个人博客平台

1. 当前需求

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

2. 前置准备

主机	操作系统	IP地址	主要软件
宿主机	CentOS 7.3 x86_64	192.168.67.100	Docker 19.03
Nginx容器		172.18.0.10
Mysql容器		172.18.0.20
PHP容器		172.18.0.30

3. 搭建过程

3.1 创建自定义网络

#关闭防火墙和selinux
systemctl stop firewalld 
systemctl disable firewalld
setenforce 0

#创建自定义网络
docker network create --subnet=172.18.0.0/16 --opt "com.docker.network.bridge.name"="docker1"  mynetwork

3.2 部署并配置nginx

容器IP：172.18.0.10

3.2.1 创建工作目录并上传相关软件包

mkdir /opt/nginx
cd /opt/nginx

3.2.2 解压缩相关软件包

mkdir /opt/nginx/html
tar zxvf wordpress-4.9.4-zh_CN.tar.gz -C /opt/nginx/html

rm -rf wordpress-4.9.4-zh_CN.tar.gz
#解压缩完成后删除安装包

3.2.3 编写Dockerfile文件

vim DockerfileFROM centos:7 AS first
MAINTAINER this is nginx <scj>
ADD nginx-1.22.0.tar.gz /opt/
RUN yum -y install pcre-devel zlib-devel gcc gcc-c++ make && \
useradd -M -s /sbin/nologin nginx && \
cd /opt/nginx-1.22.0 && \
./configure  --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_stub_status_module && \
make && \
make install
ENV PATH /usr/local/nginx/sbin:$PATH
ADD nginx.conf /usr/local/nginx/conf/FROM centos:7
COPY --from=first /usr/local/nginx/ /usr/local/nginx/
RUN useradd -M -s /sbin/nologin nginxEXPOSE 80
EXPOSE 443CMD ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]

3.2.4 编写nginx.conf文件

vim nginx.conf#user  nobody;
worker_processes  auto;#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;#pid        logs/nginx.pid;events {use epoll;worker_connections  1024;
}http {include       mime.types;default_type  application/octet-stream;#log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '#                  '$status $body_bytes_sent "$http_referer" '#                  '"$http_user_agent" "$http_x_forwarded_for"';#access_log  logs/access.log  main;sendfile        on;#tcp_nopush     on;#keepalive_timeout  0;keepalive_timeout  65;#gzip  on;server {listen       80;server_name  www.scj.com;#charset koi8-r;#access_log  logs/host.access.log  main;location / {root   html;index  index.php index.html index.htm;}#error_page  404              /404.html;# redirect server error pages to the static page /50x.html#error_page   500 502 503 504  /50x.html;location = /50x.html {root   html;}# proxy the PHP scripts to Apache listening on 127.0.0.1:80##location ~ \.php$ {#    proxy_pass   http://127.0.0.1;#}# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000#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;}# deny access to .htaccess files, if Apache's document root# concurs with nginx's one##location ~ /\.ht {#    deny  all;#}}# another virtual host using mix of IP-, name-, and port-based configuration##server {#    listen       8000;#    listen       somename:8080;#    server_name  somename  alias  another.alias;#    location / {#        root   html;#        index  index.html index.htm;#    }#}# HTTPS server##server {#    listen       443 ssl;#    server_name  localhost;#    ssl_certificate      cert.pem;#    ssl_certificate_key  cert.key;#    ssl_session_cache    shared:SSL:1m;#    ssl_session_timeout  5m;#    ssl_ciphers  HIGH:!aNULL:!MD5;#    ssl_prefer_server_ciphers  on;#    location / {#        root   html;#        index  index.html index.htm;#    }#}}

3.2.5 创建nginx镜像

docker build -t nginx:lnmp .

3.2.6 运行容器

#以nginx容器 在后台运行镜像
docker run -d --name nginx -p 80:80 -v /opt/nginx/html:/usr/local/nginx/html --net mynetwork --ip 172.18.0.10 nginx:lnmp- "-d" 表示以后台运行的方式启动容器。
- "--name nginx" 设置容器的名称为 "nginx"。
- "-p 80:80" 将主机的 80 端口映射到容器的 80 端口，使得可以通过主机的 IP 地址访问 NGINX 服务器。
- "-v /opt/nginx/html:/usr/local/nginx/html" 将主机上的 /opt/nginx/html 目录与容器内的 /usr/local/nginx/html 目录进行挂载，实现文件共享。
- "--net mynetwork --ip 172.18.0.10" 将容器连接到名为 "mynetwork" 的用户自定义网络，并指定容器的 IP 地址为 172.18.0.10。
- "nginx:lnmp" 指定了要使用的 NGINX 服务器镜像和标签。

3.3 部署并配置mysql

容器IP 为 172.168.0.20

多阶段构造

3.3.1 创建工作目录

mkdir /opt/mysqld
cd /opt/mysqld上传 mysql-boost-5.7.20.tar.gz 到 /opt/mysqld 目录中

3.3.2 编写Dockerfie文件（多阶段构建）

vim Dockerfile# 第一阶段 - 构建阶段
FROM centos:7 AS builder
MAINTAINER this is mysql image <scj>
RUN yum -y install gcc gcc-c++ ncurses ncurses-devel bison cmake make
ADD mysql-boost-5.7.20.tar.gz /usr/local/src/
WORKDIR /usr/local/src/mysql-5.7.20/
RUN 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_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 -j4 && make install# 第二阶段 - 配置阶段
FROM centos:7 AS config
COPY --from=builder /usr/local/mysql /usr/local/mysql
COPY my.cnf /etc/
ENV PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH
RUN useradd -M -s /sbin/nologin  mysql && \
chown mysql:mysql /etc/my.cnf && \
chown -R mysql:mysql /usr/local/mysql/ && \
/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"]

3.3.3 编写配置文件my.cnf

vim my.cnf[client]
port = 3306
socket = /usr/local/mysql/mysql.sock[mysql]
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
server-id = 1sql_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

3.3.4 创建镜像

docker build -t mysql:lnmp .
#名称:标签

3.3.5 使用新的镜像运行容器并测试

docker run --name=mysql -d --privileged -v /usr/local/mysql --net mynetwork --ip 172.18.0.20 mysql:lnmp- `--name=mysql`：指定容器的名称为mysql。
- `-d`：以后台模式运行容器。
- `--privileged`：在容器内部启用特权模式，可以执行一些底层操作。
- `-v /usr/local/mysql`：将宿主机的`/usr/local/mysql`目录挂载到容器的相应位置。
- `--net mynetwork`：将容器连接到名为mynetwork的网络。

3.4 部署并配置PHP

容器IP：172.168.0.30

3.4.1 创建工作目录并上传代码包

mkdir /opt/php
cd /opt/php上传 php-7.1.10.tar.bz2 到 /opt/php 目录中

3.4.2 编写相关配置文件

php-fpm.conf

www.conf

php.ini

3.4.3 编写Dockerfile文件

vim DockerfileFROM centos:7 AS first
MAINTAINER this is php image <byyb 20231021>
ADD php-7.1.10.tar.bz2 /opt/
RUN 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 \
gcc gcc-c++ make pcre-devel && \
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 -j 2 && make install && \
cp /opt/php-7.1.10/php.ini-development /usr/local/php/lib/php.ini && \
sed -i -e '939c date.timezone = Asia/Shanghai'  -e '1170c mysqli.default_socket = /usr/local/mysql/mysql.sock' /usr/local/php/lib/php.ini && \
cd /usr/local/php/etc/ && \
cp  php-fpm.conf.default php-fpm.conf && \
sed -i '17 s/^;//' php-fpm.conf && \
cd /usr/local/php/etc/php-fpm.d/ && \
cp www.conf.default www.conf && \
sed -i -e '23c user = nginx' -e '24c group = nginx' -e '36c listen = 172.18.0.30:9000' -e '62c listen.allowed_clients = 172.18.0.10' www.confFROM centos:7
COPY --from=first /usr/local/php/ /usr/local/php/
RUN yum -y install gd \
libjpeg-devel \
libpng-devel \
freetype-devel \
libxml2-devel \
zlib-devel \
curl-devel \
openssl-devel && \
useradd -M -s /sbin/nologin nginx && \
rm -rf /var/cache/yum/*
EXPOSE 9000
CMD ["/usr/local/php/sbin/php-fpm", "-F"]

3.4.4 创建php镜像

docker build -t php:lnmp .

3.4.5 运行容器

docker run --name=php -d -p 9000:9000 --volumes-from mysql --volumes-from nginx --net mynetwork --ip 172.18.0.30 php:lnmp

3.5 数据库授权

docker exec -it mysql /bin/bash

mysql
#登录数据库create database wordpress;grant all privileges on wordpress.* to 'wordpress'@'%' identified by '123456';
grant all privileges on *.* to 'root'@'%' identified by 'abc123';
flush privileges;

3.6 运行Wordpress

浏览器访问：
http://192.168.67.100/wordpress/index.php