upstream prematurely closed connection while reading response header from upstream

wordpress 上传文件 2018/05/08 17:36:18 [error] 15016#0: *709 upstream prematurely closed connection while reading response header from upstream, client: 14.156.36.104, server: www.xxx.com, request: "POST /wp-admin/async-upload.php HTTP/2.0", upstream: "fastcgi://unix:/tmp/php-cgi-56.sock:", host: "www.xxx.com", referrer: "https://www.xxx.com/wp-admin/upload.php"

各版本号 wordpress centos 7 64 nginx：nginx-tengine2.2 php：5.6

nginx.conf user www www; worker_processes auto; error_log /www/wwwlogs/nginx_error.log crit; pid /www/server/nginx/logs/nginx.pid; worker_rlimit_nofile 51200;

events { use epoll; worker_connections 51200; multi_accept on; }

http { include mime.types; include proxy.conf;

 default_type application/octet-stream; server_names_hash_bucket_size 512; client_header_buffer_size 32k; large_client_header_buffers 4 32k; client_max_body_size 500m; sendfile on; tcp_nopush on; keepalive_timeout 60; tcp_nodelay on; #缓存被频繁访问的文件相关的信息 open_file_cache max=200000 inactive=20s; open_file_cache_valid 30s; open_file_cache_min_uses 2; open_file_cache_errors on; fastcgi_connect_timeout 300; fastcgi_send_timeout 300; fastcgi_read_timeout 300; fastcgi_buffer_size 256k; fastcgi_buffers 16 256k; fastcgi_busy_buffers_size 512k; fastcgi_temp_file_write_size 512k; fastcgi_intercept_errors on; gzip on; gzip_min_length 1k; gzip_buffers 4 16k; gzip_http_version 1.1; gzip_comp_level 2; gzip_types text/plain application/Javascript application/x-Javascript text/Javascript text/css application/xml; gzip_vary on; gzip_proxied expired no-cache no-store private auth; gzip_disable "MSIE [1-6]\."; limit_conn_zone $binary_remote_addr zOne=perip:10m; limit_conn_zone $server_name zOne=perserver:10m; server_tokens off; access_log off; 

server { listen 888; server_name www.bt.cn; index index.html index.htm index.php; root /www/server/stop;

 #error_page 404 /404.html; include enable-php.conf; location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ { expires 30d; } location ~ .*\.(js|css)?$ { expires 12h; } location ~ /\. { deny all; } access_log /www/wwwlogs/access.log; } 

server { listen 80 default; return 444; }

include /www/server/panel/vhost/nginx/*.conf; }

keepalive_timeout 设置到 600 也不行。 通过修改 proxy.conf 也不行。