Nginx日常报错处理总结

在Nginx错误日志中，有大量的下列信息：

Upstream timed out (110: Connection timed out) while reading response header from upstream

[root@www vhosts]# tailf /usr/local/nginx/logs/qderp_error.log
2018/10/31 02:05:39 [error] 12831#0: *149343 upstream timed out (110: Connection timed out) while reading response header from upstream, 
2018/10/31 02:05:39 [error] 12831#0: *149341 upstream timed out (110: Connection timed out) while reading response header from upstream, 
2018/10/31 02:05:39 [error] 12831#0: *149342 upstream timed out (110: Connection timed out) while reading response header from upstream, 
2018/10/31 02:05:39 [error] 12831#0: *149340 upstream timed out (110: Connection timed out) while reading response header from upstream, 
2018/10/31 02:05:39 [error] 12831#0: *149338 upstream timed out (110: Connection timed out) while reading response header from upstream,

这种情况主要在下面两种情况下发生:

1. nginx proxy

需要适当的调整proxy_read_timeout值。

location / {
        ...
        proxy_read_timeout 150;
        ...
    }

2. Nginx作为php-fpm等等其他的有上游服务

在这种情况下，适当的调整fastcgi_read_timeout选项值

location ~* .php$ {
    include         fastcgi_params;
    fastcgi_index   index.php;
    fastcgi_read_timeout 150;
    fastcgi_pass    127.0.0.1:9000;
    fastcgi_param   SCRIPT_FILENAME    $document_root$fastcgi_script_name;
}