Plesk 11.5 Nginx 502 Error

[Janko1000]

I have moved my site to another server with clean Plesk 11.5. Well unfortunately I get only error ...

2013/08/14 06:24:45 [error] 2278#0: *40025 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40022 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40023 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40021 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40019 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40018 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40020 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40017 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40015 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2284#0: *40037 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2284#0: *40038 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"
2013/08/14 06:24:45 [error] 2278#0: *40026 connect() to unix:/var/www/vhosts/system/golf4.de/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: xxx.xxx.xxx.xxx, server: golf4.de, request: "GET /forum.php HTTP/1.0", upstream: "fastcgi://unix:/var/www/vhosts/system/golf4.de/php-fpm.sock:", host: "www.golf4.de"

My forum has 1,000 concurrent visitors. On my old server (Plesk 11.5 Debian) it was no problem. On the new server from 100 visitors I get error 502/504 displayed.
I tried it with Debian7 and Ubuntu 12.04. Always with Plesk 11.5 and Nginx PHP-FPM.
APC cache is installed.
If you need log files, just say!

Specs:
Intel I7 3930 Hexa
64 GB Ram
4x Intel SSD (Raid10) on LSI Raid with 1GB Cache and BBU

 

[Janko1000]

*bump* Please give me a advice...