Hi,
I'm very new to server administration, and I cannot find some tech guys to
help me currently. My server is almost down, actually it was down this
morning, but alive this afternoon.
I got a lot of error log like
2011/03/08 17:04:46 [error] 8041#0: *390310 upstream prematurely closed
> connection while reading response header from upstream, client:
> 114.255.28.23, server: 17bdc.com, request: "GET / HTTP/1.1", upstream:
> "uwsgi://192.168.155.99:8088"
>
The error causes a lot of request abortions or timeouts, and the server is
very very slow.
Thanks for your suggestions and possible fixes in advance.
All my servers below are instances on linode vps. I'm thinking if any
relevance with vps.
*server structures:*
nginx server (svr nginx) + nginx_server_app (srv nginx_app) + 3 apps server
(svr app1-3)
+ 3 apps server ( svr4-6)
+ 1 db server(db) + 1
memcached server (memcached)
svr app1-3 serve heavily loaded urls: /reviews/fetch/, /review/status/.
srv app4-6 serve all the other urls
*nginx configuration:*
worker_processes 7;
events {
worker_connections 8192;
use epoll;
}
http {
# default nginx location
include /usr/local/nginx/conf/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';
client_header_timeout 3m;
client_body_timeout 3m;
send_timeout 3m;
connection_pool_size 256;
client_header_buffer_size 1k;
large_client_header_buffers 4 2k;
request_pool_size 4k;
output_buffers 4 32k;
postpone_output 1460;
sendfile on;
tcp_nopush on;
keepalive_timeout 75 20;
tcp_nodelay on;
client_max_body_size 10m;
client_body_buffer_size 256k;
client_body_temp_path
/home/beeblio/develop/workspace/log/client_body_temp;
#/home/yourusername/projects/myproject/log/client_body_temp;
uwsgi_temp_path /home/beeblio/develop/workspace/log/uwsgi_temp/;
gzip on;
gzip_min_length 1100;
gzip_buffers 4 32k;
gzip_types text/plain application/javascript
application/x-javascript text/xml text/css;
ignore_invalid_headers on;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 50;
fastcgi_read_timeout 3000;
uwsgi_connect_timeout 60;
uwsgi_send_timeout 50;
uwsgi_read_timeout 50;
proxy_read_timeout 60;
proxy_send_timeout 6;
include sites-enabled/*;
}
--
Samuel
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