5-- Dockerfile 搭建 博客系统

目录

• 1.建站点，上传软件包
• 2.准备php文件+构建为镜像
• 3.准备nginx文件+构建为镜像
• 4.构建MYSQL镜像
• 5.测试

安装流程规划

• wordpress装在宿主主机，相当于一台NFS
• php用yum安装在一台容器内
• nginx装在一个容器内
• 将容器挂载到wordpress站点目录以实现访问
• 宿主机内cpu要求四核四G

1.建站点，上传软件包

1、创建目录
[root@docter ~]# mkdir /blog/{php,nginx,mysql}
2、上传wordpress包并解压
[root@docker opt]# wget https://wordpress.org/latest.zip
[root@docker opt]# unzip -d /blog/ latest.zip 
3、构建centos:7镜像
[root@docter ~]# docker run -it  centos:7 bash
[root@docter ~]# docker images
REPOSITORY        TAG       IMAGE ID       CREATED          SIZE
centos            7         3c9be54d505f  7 months ago     204MB
4、创建一个网桥
[root@docter ~]# docker network create lnmp
[root@docter ~]# docker network ls
NETWORK ID     NAME      DRIVER    SCOPE
e26ae49a68f1   bridge    bridge    local
b0a268c1d902   host      host      local
bb02f8b94a1a   lnmp      bridge    local
0d214ca04d47   none      null      local

2.准备php文件+构建为镜像

#切换目录
[root@docker ~]# cd /blog/php

#编辑php配置文件
[root@docker php]# vim www.conf
[www]
user = www
group = www
listen = 9000
request_terminate_timeout = 0
pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 35
slowlog = /var/log/php-fpm/www-slow.log
php_admin_value[error_log] = /var/log/php-fpm/www-error.log
php_admin_flag[log_errors] = on
php_value[session.save_handler] = files
php_value[session.save_path]    = /var/lib/php/session
php_value[soap.wsdl_cache_dir]  = /var/lib/php/wsdlcache

#创建PHP.repo
[root@docker php]# vim php.repo
[php-webtatic]
name = PHP Repo
baseurl = http://us-east.repo.webtatic.com/yum/el7/x86_64/
gpgcheck = 0
enable = 1

#编辑php Dockerfile
[root@docker php]# vim Dockerfile
FROM centos:7
ADD www.conf /etc/php-fpm.d/www.conf
ADD php.repo /etc/yum.repos.d/php.repo
RUN useradd www
RUN yum install -y php71w php71w-cli php71w-common php71w-devel php71w-embedded php71w-gd php71w-mcrypt php71w-mbstring php71w-pdo php71w-xml php71w-fpm php71w-mysqlnd php71w-opcache php71w-pecl-memcached php71w-pecl-redis php71w-pecl-mongodb php71w-bcmath --skip-broken
EXPOSE 9000
CMD ["php-fpm "-F""]

#构建php镜像
[root@docker php]# docker build -t php:v1 .

# 启动容器（容器名为php，指定网桥，指定挂载目录，开辟一个窗口）
[root@docker php]# docker run -it --name php --network=lnmp -v /blog/wordpress/:/usr/share/nginx/html php:v1 bash

3.准备nginx文件+构建为镜像

1、编写nginx的dockerfile文件
[root@docter nginx]# cat Dockerfile 
FROM centos:7

ADD nginx.repo /etc/yum.repos.d/
RUN yum -y install nginx

ADD default.conf /etc/nginx/conf.d/
ADD nginx.conf /etc/nginx/

WORKDIR /usr/share/nginx/

EXPOSE 80 443

RUN groupadd www -g 666 && 
    useradd www -u 666 -g 666

CMD nginx -g "daemon off;"

2、编写nginx的default.conf 文件
[root@docter nginx]# cat default.conf 
server {
    listen       80;
    listen  [::]:80;
    server_name  localhost;
    root   /usr/share/nginx/html;
    
    location / {
        index  index.php index.html index.htm;
    }

    location ~ .php$ {
        root           /usr/share/nginx/html;
        fastcgi_pass   php:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }
}

3、编辑nginx配置文件
[root@docker1 nginx]# vim nginx.conf 
user  www;
worker_processes  auto;

error_log  /var/log/nginx/error.log notice;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/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  /var/log/nginx/access.log  main;

sendfile        on;
#tcp_nopush     on;

keepalive_timeout  65;

#gzip  on;

include /etc/nginx/conf.d/*.conf;

4、编写nginx的nginx.repo文件
[root@docter nginx]# cat nginx.repo 
[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

[nginx-mainline]
name=nginx mainline repo
baseurl=http://nginx.org/packages/mainline/centos/7/$basearch/
gpgcheck=1
enabled=0
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

5、构建镜像
[root@docter nginx]# docker build -t nginx:v1 . #构建必须和dockerfile在同一个目录中

6、启动容器（容器名为nginx，绑定端口映射，指定网桥，指定挂载目录，开辟一个窗口）
[root@docker opt]# docker run -it --name nginx -p 80:80 --network=lnmp -v /blog/wordpress/:/usr/share/nginx/html nginx:latest bash

4.构建MYSQL镜像

# 启动容器（容器名为mysql，指定网桥，创建密码））
[root@docker blog]# docker run -d -e MYSQL_ROOT_PASSWORD=123 --network=lnmp --name mysql mysql:5.7

#进入mysql容器
[root@docker1 ~]# docker exec -it mysql bash

#进入数据库
root@9669bf1d0d99:/# mysql -uroot -p
Enter password: 123

#创建数据库
mysql> create database wordpress;
Query OK, 1 row affected (0.00 sec)

5.测试

 #查看全部镜像
[root@m01 blog]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED             SIZE
php          v1        a1665bd3e348   About an hour ago   534MB
nginx        latest    77c83387bf62   About an hour ago   335MB
mysql        5.7       09361feeb475   5 days ago          447MB
centos       7         8652b9f0cb4c   7 months ago        204MB

#查看全部容器是否启动成功
[root@m01 blog]# docker ps -a
CONTAINER ID   IMAGE          COMMAND                  CREATED             STATUS             PORTS                                        NAMES
deab5f483b44   mysql:5.7      "docker-entrypoint.s…"   About an hour ago   Up About an hour   3306/tcp, 33060/tcp                          mysql
94d5a2684033   php:v1         "bash"                   About an hour ago   Up 50 minutes      9000/tcp                                     php
60fb25477abb   nginx:latest   "bash"                   About an hour ago   Up 55 minutes      0.0.0.0:80->80/tcp, :::80->80/tcp, 443/tcp   nginx

#进入nginx容器执行nginx前台运行的命令
[root@60fb25477abb conf.d]# nginx -g "daemon off;"

#进入php容器执行php前台运行的命令
[root@94d5a2684033 /]# php-fpm -F

#IP访问测试
1、把 wp-config.php文件写到此目录中就ok
[root@docter wordpress]# pwd
/blog/wordpress
[root@docter wordpress]# vim wp-config.php  
<?php
... ... ...
# 安装