On Fri, Mar 06, 2015 at 09:59:47PM +0000, Kazlman, David wrote:
> I've migrated my server over from lighttpd to NGINX(memory leaks were causing
> cache issues which invoked OOM Killer in Linux). It seems that after a while
> of running(about 30 minutes) with NGINX and processing requests just fine
> the NGINX worker process gets stuck in a loop maxing out the CPU and not
> responding to any other requests. I am running NGINX version 1.6.2, OpenSSL
> 1.2.0,
> PHP-FPM.
> PHP 5.5.19 (fpm-fcgi) (built: Mar 5 2015 10:12:12)
> Copyright (c) 1997-2014 The PHP Group
> Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
>
> This is a very minimal use of the webserver (1 user, at most 2 requests from
> the browser every 2 seconds).
>
> I turned on debugging in nginx and captured a log. The worker threads seems
> to be hung near the bottom of the log, but I can't pick anything out of the
> log that indicates a problem. I don't see any errors. I attached the debug
> log, can someone please help look it over and see if anything stands out?
>
> I've noticed sometimes when this occurs the log is reporting:
>
> 2015/03/05 20:13:34 [info] 698#0: *1348 peer closed connection in SSL
> handshake while SSL handshaking, client: 192.168.0.126, server: 0.0.0.0:443
>
> But this isn't always the case. I can repeat this hang after about 30
> minutes pretty consistently. I've tried 3 different versions of openSSL
> (1.0.0, 1.0.1, 1.0.2) and 2 versions of NGINX (1.6.2, 1.7.10) and nothing
> seems to resolve the issue so it may be pointing to a configuration problem.
> I have also tried unix sockets vs tcp sockets as the fastcgi transfer
> mechanism (listen = /var/run/php-fpm.sock and listen = 127.0.0.1:9000) and
> both seem to act similarly
>
>
> If I kill the webserver and restart it, the webserver starts acting on
> requests just fine again, and after some amount of time gets back into this
> state. My configuration is as follows:
>
> nginx.conf:
>
> #user nobody;
> worker_processes 1;
>
> #error_log logs/error.log;
> #error_log logs/error.log notice;
> error_log /var/log/nginx/error.log debug;
>
> #pid logs/nginx.pid;
>
>
> events {
> worker_connections 1024;
> }
>
>
> http {
> include mime.types;
> default_type application/octet-stream;
>
> sendfile on;
> keepalive_timeout 65;
>
> client_max_body_size 30M;
>
> # Redirect HTTP Requests to HTTPS
> #
> server {
> listen 80;
> server_name localhost;
> return 301 https://$host;
> }
>
> # HTTPS server
> #
> server {
> listen 443 ssl;
> server_name $host;
>
> ssl on;
> ssl_certificate /mnt/emmc/ssl/nginx.crt;
> ssl_certificate_key /mnt/emmc/ssl/nginx.key;
>
> root /var/www/htdocs/;
>
> location / {
> try_files $uri $uri/
> /index.php;
> index index.php;
> }
>
> location ~ \.php$ {
> fastcgi_split_path_info ^(.+\.php)(/.+)$;
> fastcgi_pass unix:/var/run/php-fpm/sock;
> fastcgi_index index.php;
> include fastcgi_params;
> fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
> include /etc/nginx/fastcgi.conf;
> }
> }
>
> }
[...]
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