目录
三：413 Request Entity Too Large?
四：Request Header Or Cookie Too Large 400
一：报错
upstream prematurely closed connection while reading response header from upstream, client: 114.95.224.97, server: old.dagongchang.com, request: "GET /dgc_adMin/order.php?act=info&order_id=255336 HTTP/1.1", upstream: "http://127.0.0.1:8000/dgc_adMin/order.php?act=info&order_id=255336", host: "old.dagongchang.com", referrer: "http://old.dagongchang.com/dgc_adMin/order.php?act=list
解决：
（1）可能是连接数据库超时，查看数据库日志；
排查：web和数据库一个地方,web和数据库两个地方判断；
常见错误日志:
（一）：
upstream prematurely closed connection while reading response header from upstream, client: 114.95.224.97, server: old.dagongchang.com, request: "GET /dgc_adMin/order.php?act=info&order_id=255336 HTTP/1.1", upstream: "http://127.0.0.1:8000/dgc_adMin/order.php?act=info&order_id=255336", host: "old.dagongchang.com", referrer: "http://old.dagongchang.com/dgc_adMin/order.php?act=list
解决：
（1）可能是连接数据库超时，查看数据库日志；
排查：web和数据库一个地方,web和数据库两个地方判断；
常见错误日志:
二：php查看后台内容有的栏目出现502？
（1）可能是php读取数据库时间太长或者计算量太大,加大php.ini里的内存;
(2)得到相关的php语句查看打印执行时间;
(3)去掉相关的sql语句试试.
三：413 Request Entity Too Large?
client_max_body_size 50m; 上传大小限制
四：Request Header Or Cookie Too Large 400
Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct () in Unknown on line 0
解决:发现泛解析错误
<VirtualHost *:808>
# ServerAdmin webmaster@dummy-host.example.com
DocumentRoot "/www/wwwroot/wp"
ServerName www.veipifa.com
ServerAlias *.veipifa.com 这里写错了 写成dagongchang.com了
LimitRequestBody 524288000
ErrorLog "/www/weblogs/www.veipifa.com_httpd_error.log"
CustomLog "/www/weblogs/www.veipifa.com_httpd_access.log" common
<Directory /www/wwwroot/wp >
# Options Indexes FollowSymLinks
Options FollowSymLinks
AllowOverride All
Require all granted
ExpiresByType text/css A5
ExpiresByType application/x-javascript A5
ExpiresByType image/gif A5
# Require all denied
</Directory>
</VirtualHost>
五：[error] 9706#0: *203994 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined index: HTTP_X_REAL_IP in /data/wwwroot/apigmtool.youjoy.tv/app/Controller/Api/Controller.php on line 13" while reading response header from upstream, client: 140.207.91.206, server: apigmtool.youjoy.tv, request
php5会出现这个问题 ,解决在变量前面加上@ ,nginx就不会提示这种警告了
