再Docker中架设完整的WordPress站点全攻略_PHP
Docker
1. 安装 Docker
在我们真正开始之前,我们需要确保在我们的 Linux 机器上已经安装了 Docker。我们使用的主机是 CentOS 7,因此我们用下面的命令使用 yum 管理器安装 docker。
# yum install docker
# systemctl restart docker.service
2. 创建 WordPress 的 Dockerfile
我们需要创建用于自动安装 wordpress 以及其前置需求的 Dockerfile。这个 Dockerfile 将用于构建 WordPress 的安装镜像。这个 WordPress Dockerfile 会从 Docker Registry Hub 获取 CentOS 7 镜像并用最新的可用更新升级系统。然后它会安装必要的软件,例如 Nginx Web 服务器、PHP、MariaDB、Open SSH 服务器,以及其它保证 Docker 容器正常运行不可缺少的组件。最后它会执行一个初始化 WordPress 安装的脚本。
# nano Dockerfile
然后,我们需要将下面的配置行添加到 Dockerfile中。
FROM centos:centos7 MAINTAINER The CentOS Project <cloud-ops@centos.org> RUN yum -y update; yum clean all RUN yum -y install epel-release; yum clean all RUN yum -y install mariadb mariadb-server mariadb-client nginx php-fpm php-cli php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc php-magickwand php-magpierss php-mbstring php-mcrypt php-mssql php-shout php-snmp php-soap php-tidy php-apc pwgen python-setuptools curl git tar; yum clean all ADD ./start.sh /start.sh ADD ./nginx-site.conf /nginx.conf RUN mv /nginx.conf /etc/nginx/nginx.conf RUN rm -rf /usr/share/nginx/html/* RUN /usr/bin/easy_install supervisor RUN /usr/bin/easy_install supervisor-stdout ADD ./supervisord.conf /etc/supervisord.conf RUN echo %sudo ALL=NOPASSWD: ALL >> /etc/sudoers ADD http://wordpress.org/latest.tar.gz /wordpress.tar.gz RUN tar xvzf /wordpress.tar.gz RUN mv /wordpress/* /usr/share/nginx/html/. RUN chown -R apache:apache /usr/share/nginx/ RUN chmod 755 /start.sh RUN mkdir /var/run/sshd EXPOSE 80 EXPOSE 22 CMD ["/bin/bash", "/start.sh"]
3. 创建启动脚本
我们创建了 Dockerfile 之后,我们需要创建用于运行和配置 WordPress 安装的脚本,名称为 start.sh。它会为 WordPress 创建并配置数据库和密码。用我们喜欢的文本编辑器打开 start.sh。
# nano start.sh
打开 start.sh 之后,我们要添加下面的配置行到文件中。
#!/bin/bash __check() { if [ -f /usr/share/nginx/html/wp-config.php ]; then exit fi } __create_user() { # 创建用于 SSH 登录的用户 SSH_USERPASS=`pwgen -c -n -1 8` useradd -G wheel user echo user:$SSH_USERPASS | chpasswd echo ssh user password: $SSH_USERPASS } __mysql_config() { # 启用并运行 MySQL yum -y erase mariadb mariadb-server rm -rf /var/lib/mysql/ /etc/my.cnf yum -y install mariadb mariadb-server mysql_install_db chown -R mysql:mysql /var/lib/mysql /usr/bin/mysqld_safe & sleep 10 } __handle_passwords() { # 在这里我们生成随机密码(多亏了 pwgen)。前面两个用于 mysql 用户,最后一个用于 wp-config.php 的随机密钥。 WORDPRESS_DB="wordpress" MYSQL_PASSWORD=`pwgen -c -n -1 12` WORDPRESS_PASSWORD=`pwgen -c -n -1 12` # 这是在日志中显示的密码。 echo mysql root password: $MYSQL_PASSWORD echo wordpress password: $WORDPRESS_PASSWORD echo $MYSQL_PASSWORD > /mysql-root-pw.txt echo $WORDPRESS_PASSWORD > /wordpress-db-pw.txt # 这里原来是一个包括 sed、cat、pipe 和 stuff 的很长的行,但多亏了 # @djfiander 的 https://gist.github.com/djfiander/6141138 # 现在没有了 sed -e "s/database_name_here/$WORDPRESS_DB/ s/username_here/$WORDPRESS_DB/ s/password_here/$WORDPRESS_PASSWORD/ /'AUTH_KEY'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'SECURE_AUTH_KEY'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'LOGGED_IN_KEY'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'NONCE_KEY'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'AUTH_SALT'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'SECURE_AUTH_SALT'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'LOGGED_IN_SALT'/s/put your unique phrase here/`pwgen -c -n -1 65`/ /'NONCE_SALT'/s/put your unique phrase here/`pwgen -c -n -1 65`/" /usr/share/nginx/html/wp-config-sample.php > /usr/share/nginx/html/wp-config.php } __httpd_perms() { chown apache:apache /usr/share/nginx/html/wp-config.php } __start_mysql() { # systemctl 启动 mysqld 服务 mysqladmin -u root password $MYSQL_PASSWORD mysql -uroot -p$MYSQL_PASSWORD -e "CREATE DATABASE wordpress; GRANT ALL PRIVILEGES ON wordpress.* TO 'wordpress'@'localhost' IDENTIFIED BY '$WORDPRESS_PASSWORD'; FLUSH PRIVILEGES;" killall mysqld sleep 10 } __run_supervisor() { supervisord -n } # 调用所有函数 __check __create_user __mysql_config __handle_passwords __httpd_perms __start_mysql __run_supervisor
增加完上面的配置之后,保存并关闭文件。
4. 创建配置文件
现在,我们需要创建 Nginx Web 服务器的配置文件,命名为 nginx-site.conf。
# nano nginx-site.conf
然后,增加下面的配置信息到配置文件。
user nginx; worker_processes 1; error_log /var/log/nginx/error.log; #error_log /var/log/nginx/error.log notice; #error_log /var/log/nginx/error.log info; pid /run/nginx.pid; events { worker_connections 1024; } http { include /etc/nginx/mime.types; default_type application/octet-stream; log_format main '$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 0; keepalive_timeout 65; #gzip on; index index.html index.htm index.php; # Load modular configuration files from the /etc/nginx/conf.d directory. # See http://nginx.org/en/docs/ngx_core_module.html#include # for more information. include /etc/nginx/conf.d/*.conf; server { listen 80; server_name localhost; #charset koi8-r; #access_log logs/host.access.log main; root /usr/share/nginx/html; #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 /usr/share/nginx/html; try_files $uri =404; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$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; #} } }
现在,创建 supervisor.conf 文件并添加下面的行。
# nano supervisord.conf
然后,添加以下行。
[unix_http_server] file=/tmp/supervisor.sock ; (the path to the socket file) [supervisord] logfile=/tmp/supervisord.log ; (main log file;default $CWD/supervisord.log) logfile_maxbytes=50MB ; (max main logfile bytes b4 rotation;default 50MB) logfile_backups=10 ; (num of main logfile rotation backups;default 10) loglevel=info ; (log level;default info; others: debug,warn,trace) pidfile=/tmp/supervisord.pid ; (supervisord pidfile;default supervisord.pid) nodaemon=false ; (start in foreground if true;default false) minfds=1024 ; (min. avail startup file descriptors;default 1024) minprocs=200 ; (min. avail process descriptors;default 200) ; the below section must remain in the config file for RPC ; (supervisorctl/web interface) to work, additional interfaces may be ; added by defining them in separate rpcinterface: sections [rpcinterface:supervisor] supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface [supervisorctl] serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socket [program:php-fpm] command=/usr/sbin/php-fpm -c /etc/php/fpm stdout_events_enabled=true stderr_events_enabled=true [program:php-fpm-log] command=tail -f /var/log/php-fpm/php-fpm.log stdout_events_enabled=true stderr_events_enabled=true [program:mysql] command=/usr/bin/mysql --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=/var/log/mysql/error.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock --port=3306 stdout_events_enabled=true stderr_events_enabled=true [program:nginx] command=/usr/sbin/nginx stdout_events_enabled=true stderr_events_enabled=true [eventlistener:stdout] command = supervisor_stdout buffer_size = 100 events = PROCESS_LOG result_handler = supervisor_stdout:event_handler
添加完后,保存并关闭文件。
5. 构建 WordPress 容器
现在,完成了创建配置文件和脚本之后,我们终于要使用 Dockerfile 来创建安装最新的 WordPress CMS(译者注:Content Management System,内容管理系统)所需要的容器,并根据配置文件进行配置。做到这点,我们需要在对应的目录中运行以下命令。
# docker build --rm -t wordpress:centos7 .
6. 运行 WordPress 容器
现在,执行以下命令运行新构建的容器,并为 Nginx Web 服务器和 SSH 访问打开88 和 22号相应端口 。
# CID=$(docker run -d -p 80:80 wordpress:centos7)
运行以下命令检查进程以及容器内部执行的命令。
# echo "$(docker logs $CID )"
运行以下命令检查端口映射是否正确。
# docker ps
7. Web 界面
最后如果一切正常的话,当我们用浏览器打开 http://ip-address/ 或者 http://mywebsite.com/ 的时候会看到 WordPress 的欢迎界面。
现在,我们将通过 Web 界面为 WordPress 面板设置 WordPress 的配置、用户名和密码。
然后,用上面用户名和密码输入到 WordPress 登录界面。
总结
我们已经成功地在以 CentOS 7 作为 docker OS 的 LEMP 栈上构建并运行了 WordPress CMS。从安全层面来说,在容器中运行 WordPress 对于宿主系统更加安全可靠。这篇文章介绍了在 Docker 容器中运行的 Nginx Web 服务器上使用 WordPress 的完整配置。如果你有任何问题、建议、反馈,请在下面的评论框中写下来,让我们可以改进和更新我们的内容。非常感谢!Enjoy :-)

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