我有一个大问题。我的网站安装了 nginx 和 php5-fpm，一切运行良好，但一天内 php5-fpm 崩溃一次（有时两次，或根本不崩溃）。我不知道为什么。我多次尝试更改某些配置，但没有任何效果。一切正常，我没有更改任何内容，但有一天我看到我的网站上出现网关错误。
服务器：2GB RAM，Intel(R) Celeron(R) CPU 2.66GHz，debian
这是 php5-fpm 配置：
[www]
#listen = 127.0.0.1:9000
listen.backlog = 128
listen = /var/run/php-fpm/php-fpm.sock
;listen.backlog = -1
;listen.allowed_clients = 127.0.0.1
listen.owner = www-data
listen.group = www-data
;listen.mode = 0666
user = www-data
group = www-data
pm = dynamic
pm.max_requests = 400
pm.max_children = 45
pm.start_servers = 7
pm.min_spare_servers = 2
pm.max_spare_servers = 9
request_terminate_timeout = 0
request_slowlog_timeout = 45s
slowlog = /var/log/php-fpm/slowlog.log
catch_workers_output = yes
php_admin_value[display_errors] = 'stderr'
php_flag[display_errors] = On
php_admin_value[memory_limit] = 50M
php_admin_flag[display_startup_errors] = on
rlimit_files = 1024
rlimit_core = 0
php_admin_flag[log_errors] = on
php_admin_value[error_log] = /var/log/php-fpm/pool.log
php_admin_value[error_reporting] = 'E_ALL & ~E_DEPRECATED'
php_admin_value[display_errors] = off
php_admin_flag[display_startup_errors] = on
Nginx 配置：
upstream php_fpm {
server unix:/var/run/php-fpm/php-fpm.sock;
#server 127.0.0.1:9000;
}
server {
listen 80;
server_name here is my domain;
access_log /var/log/nginx/site.access.log;
error_log /var/log/nginx/site.error.log;
root /home/www/site/public;
index index.php;
location /status {
stub_status on;
access_log off;
allow 127.0.0.1;
deny all;
}
error_page 500 = index.php;
fastcgi_intercept_errors on;
#try_files $uri @php_index;
location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
expires 1d;
log_not_found off;
}
location / {
#index index.php;
try_files $uri $uri/ /index.php;
}
# Deny access to sensitive files.
location ~ (\.inc\.php|\.tpl|\.sql|\.tpl\.php|\.db)$ {
#deny all;
#try_files $uri $uri/ /index.php = 404;
deny all;
}
location ~ \.htaccess {
deny all;
}
# Rewrite rule adapted from zendapp/public/.htaccess
if (!-e $request_filename) {
rewrite ^.*$ /index.php last;
}
# PHP scripts will be forwarded to fastcgi processess.
# Remember that the `fastcgi_pass` directive must specify the same
# port on which `spawn-fcgi` runs.
location ~ \.php$ {
try_files $uri = 404;
fastcgi_split_path_info ^(.+\.php)(.*)$;
fastcgi_pass php_fpm;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_ignore_client_abort off;
fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
#fastcgi_send_timeout 150s;
#fastcgi_read_timeout 150s;
# fastcgi_buffer_size 128k;
# fastcgi_buffers 4 256k;
# fastcgi_busy_buffers_size 256k;
# fastcgi_temp_file_write_size 256k;
include fastcgi_params;
}
}
Nginx 错误日志：
2012/12/20 04:47:01 [error] 16995#0: *158917 upstream timed out (110: Connection timed out) while reading response header from upstream, client: server_ip, server: domain, request: "GET / HTTP/1.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:51:01 [error] 16995#0: *158952 upstream timed out (110: Connection timed out) while reading response header from upstream, client: server_ip, server: domain, request: "GET / HTTP/1.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:53:01 [error] 16995#0: *158977 upstream timed out (110: Connection timed out) while reading response header from upstream, client: server_ip, server: domain, request: "GET / HTTP/1.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:55:01 [error] 16995#0: *158998 upstream timed out (110: Connection timed out) while reading response header from upstream, client: server_ip, server: domain, request: "GET / HTTP/1.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:58:31 [error] 16995#0: *159064 connect() to unix:/var/run/php-fpm/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 66.249.74.xx, server: domain, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:58:38 [error] 16995#0: *159066 connect() to unix:/var/run/php-fpm/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 173.199.120.xx, server: domain, request: "GET /d HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:58:42 [error] 16995#0: *159068 connect() to unix:/var/run/php-fpm/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 66.249.74.xx, server: domain, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:58:52 [error] 16995#0: *159070 connect() to unix:/var/run/php-fpm/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 180.76.5.xx, server: domain, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:58:53 [error] 16995#0: *159072 connect() to unix:/var/run/php-fpm/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 66.249.74.xx, server: domain, request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
2012/12/20 04:58:53 [error] 16995#0: *159074 connect() to unix:/var/run/php-fpm/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream, client: 66.249.74.xx, server: domain, request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "domain"
PHP5-fpm调试：
[20-gru-2012 04:58:46.960245] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:47.961359] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:48.962426] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:49.963480] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:50.964540] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:51.965601] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:52.966705] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:53.967821] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:54.968938] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:55.970062] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:56.971134] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
[20-gru-2012 04:58:57.972193] DEBUG: pid 24382, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 45 active children, 0 spare children, 45 running children. Spawning rate 1
此致
答案1
您已达到活跃孩子的最大数量。
检查：/var/log/php-fpm/slowlog.log 以获取有关慢速 php 脚本的一些提示，并尝试设置：
request_terminate_timeout = 50
此致
答案2
我相信您的 pm.max_children 值设置为 45。
它应该位于 /etc/php-fom.d/*.conf 的某个位置
下午.max_children = 45
尝试将该值增加到更重要的值，因为您可以清楚地看到您已达到此处的上限。
下午.max_children = 90
这应该可以解决这个问题。
另外，我认为它不应该在达到最大限制后崩溃。肯定是哪里出了问题。
您能告诉我您使用的是哪个版本的 php-fpm 吗？