我的网站播放歌曲得到了499，502并且php-fpm.sock failed (11: Resource temporarily unavailable) errors当我在网站上收到300-400名活跃用户时。
示例错误日志：
2017-02-27 14:56:23 Error 162.158.78.50 499 GET / HTTP/1.1 0 nginx access
2017-02-27 14:56:23 Error 162.158.78.20 502 GET / HTTP/1.1 166 nginx access
2017-02-27 14:56:23 Error 162.158.78.170 502 GET / HTTP/1.1 166 nginx access
2017-02-27 14:56:23 Error 162.158.79.63 502 GET / HTTP/1.1 166 nginx access
2017-02-27 14:56:23 Error 162.158.78.50 499 GET / HTTP/1.1 0 nginx access
2017-02-27 14:56:23 Error 162.158.78.20 499 GET / HTTP/1.1 0 nginx access
2017-02-27 14:56:23 Error 162.158.78.20 499 GET / HTTP/1.1 0 nginx access
2017-02-27 14:56:23 Error 162.158.78.20 499 GET / HTTP/1.1 0 nginx access
2017-02-27 14:56:23 Error 162.158.78.20 499 GET / HTTP/1.1 0 nginx access
过了一段时间我得到了
2017-02-27 14:56:23 Error 172.68.65.4 24026#0: *2784527 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.112 24023#0: *2784529 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.100 24028#0: *2784539 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.112 24021#0: *2784541 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.112 24021#0: *2784545 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.112 24021#0: *2784547 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.112 24028#0: *2784549 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 162.158.78.50 24028#0: *2784551 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
2017-02-27 14:56:23 Error 172.68.65.112 24028#0: *2784552 connect() to unix:///var/www/vhosts/system/playsongs.pk/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream nginx error
我的Nginx配置/etc/nginx/nginx.conf：
user nginx;
worker_processes auto; #some last versions calculate it automatically
worker_rlimit_nofile 99999;
error_log /var/log/nginx/error.log crit;
include /etc/nginx/modules.conf.d/*.conf;
events {
worker_connections 66536;
use epoll;
multi_accept on;
}
http {
include mime.types;
default_type application/octet-stream;
open_file_cache max=2048 inactive=20s;
open_file_cache_valid 30s;
open_file_cache_min_uses 5;
open_file_cache_errors off;
access_log off;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 2;
keepalive_requests 100000;
reset_timedout_connection on;
client_body_timeout 30;
send_timeout 15;
client_header_timeout 12;
proxy_connect_timeout 60;
proxy_send_timeout 60;
proxy_read_timeout 60;
fastcgi_buffers 8 128k;
fastcgi_buffer_size 256k;
# reduce the data that needs to be sent over network
gzip on;
gzip_min_length 1000;
gzip_proxied expired no-cache no-store private auth;
gzip_types application/x-javascript text/css application/javascript text/javascript text/plain text/xml application/json application/v$
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
server_tokens off;
include /etc/nginx/conf.d/*.conf;
}
# override global parameters e.g. worker_rlimit_nofile
include /etc/nginx/*global_params;
我的 php-fpm 池设置如下：
;[php-fpm-pool-settings]
pm = dynamic
pm.max_children = 5000
pm.start_servers = 50
pm.min_spare_servers = 20
pm.max_spare_servers = 70
pm.max_requests = 2000
请注意
服务器有 64GB 的 RAM 和 1 GBit 的专用互联网端口，并且 CPU 上的平均负载也不超过 1.somthing % 或 2.somthing %
服务器操作系统：Centos 7.2
控制面板：Plesk Onyx
nginx 版本：nginx/1.11.4
输出#cat /proc/$(cat /run/nginx.pid)/limits如下。希望它能对解决问题有所帮助。
Limit Soft Limit Hard Limit Units
Max cpu time unlimited unlimited seconds
Max file size unlimited unlimited bytes
Max data size unlimited unlimited bytes
Max stack size 8388608 unlimited bytes
Max core file size 0 unlimited bytes
Max resident set unlimited unlimited bytes
Max processes 515124 515124 processes
Max open files 1024 4096 files
Max locked memory 65536 65536 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 515124 515124 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 0 0
Max realtime priority 0 0
Max realtime timeout unlimited unlimited us
输出tail /var/log/nginx/error.log
2017/03/01 15:16:15 [notice] 31867#0: getrlimit(RLIMIT_NOFILE): 1024:4096
2017/03/01 15:16:15 [notice] 31868#0: start worker processes
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31869
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31870
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31871
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31872
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31873
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31874
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31875
2017/03/01 15:16:15 [notice] 31868#0: start worker process 31876
答案1
尝试这个：
sysctl net.core.somaxconn=65535
php/fpm/pool.d/www.conf：
listen.backlog 65535;
或者尝试使用本地 IP 连接而不是 unix 套接字：
php/fpm/pool.d/www.conf：
listen 127.0.0.1:9000;
nginx/站点已启用/站点名称：
fastcgi_pass 127.0.0.1:9000;