NGINX + PHP FPM connect() failed (110: Connection timed out) while connecting to upstream
- by Leonard Teo
We're running a fairly large site using nginx and PHP-FPM and we're getting a lot of errors as the site load is quite high. We're getting "connect() failed (110: Connection timed out) while connecting to upstream"...upstream: "fastcgi://127.0.0.1:9000"
Here's my config file for PHP-FPM.
PHP-FPM:
[www]
listen = 127.0.0.1:9000
listen.allowed_clients = 127.0.0.1
user = nginx
group = nginx
pm = dynamic
pm.max_children = 100
pm.start_servers = 20
pm.min_spare_servers = 5
pm.max_spare_servers = 35
pm.max_requests = 100
slowlog = /var/log/php-fpm/www-slow.log
php_admin_value[error_log] = /var/log/php-fpm/www-error.log
php_admin_flag[log_errors] = on
What's the recommended config/number of servers/children for a high traffic site?
We tried using Unix Sockets instead of TCP and got no noticeable improvements. Right now the errors are:
connect() to unix:/var/run/php-fcgi.sock failed (11: Resource temporarily unavailable) while connecting to upstream...upstream: "fastcgi://unix:/var/run/php-fcgi.sock:"...
Thanks,
Leonard
