centos7+nginx1.6.2+php5.6.2+mysql5.6.20的系统环境的搭建我就不介绍啦。
php需要的模块。
php-fileinfo php-zip php-mysql php-zip php-curl php-iconv php-pdo php-intl php-gd php-xml参考地址:http://pclinuxoshelp.com/index.php/Owncloud,_installation_and_setup

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红色的框内显示的是操作办法。
改变listen 443 ssl 为listen 80=========================
黑色的框内是的是更改上传文件的大小的控制的方法
upstream php-handler {
  server 127.0.0.1:9000;
  #server unix:ar/run/php5-fpm.sock;
  }
server {
  listen 81;
  server_name location;
  # Path to the root of your installation
  root /home/www/owncloud;
  # set max upload size
  client_max_body_size 10G;
  fastcgi_buffers 64 4K;
  rewrite ^/caldav(.*)$ /remote.php/caldav$1 redirect;
  rewrite ^/carddav(.*)$ /remote.php/carddav$1 redirect;
  rewrite ^/webdav(.*)$ /remote.php/webdav$1 redirect;
  index index.php;
  error_page 403 /core/templates/403.php;
  error_page 404 /core/templates/404.php;
  location = /robots.txt {
    allow all;
    log_not_found off;
    access_log off;
    }
  location ~ ^/(?:\.htaccess|data|config|db_structure\.xml|README){
    deny all;
    }
  location / {
   # The following 2 rules are only needed with webfinger
   rewrite ^/.well-known/host-meta /public.php?service=host-meta last;
   rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last;
   rewrite ^/.well-known/carddav /remote.php/carddav/ redirect;
   rewrite ^/.well-known/caldav /remote.php/caldav/ redirect;
   rewrite ^(/core/doc/[^\/]+/)$ $1/index.html;
   try_files $uri $uri/ /index.php;
   }
   location ~ \.php(?:$|/) {
   fastcgi_split_path_info ^(.+\.php)(/.+)$;
   include fastcgi_params;
   fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
   fastcgi_param PATH_INFO $fastcgi_path_info;
   fastcgi_pass php-handler;
   }
   # Optional: set long EXPIRES header on static assets
   location ~* \.(?:jpg|jpeg|gif|bmp|ico|png|css|js|swf)$ {
       expires 30d;
       # Optional: Don't log access to assets
         access_log off;
   }
  }