我拥有一个n1-highcpu-16（16个vCPU，14.4 GB内存）。我有Bitnami NGINX设置。
当我在网站上有大约400-600人时，它有时会提供502个坏网关。我正在运行机器人，所以它往往会给我带来很大的错误。当站点收到大约50-100个对PHP文件执行一个SQL连接的请求时，就会发生这种情况。 之后，在我的网站上出现502错误的网关错误。
有没有解决方法如何解决？
我的PHP设置：
pm=static
; The number of child processes to be created when pm is set to 'static' and the
; maximum number of child processes when pm is set to 'dynamic' or 'ondemand'.
; This value sets the limit on the number of simultaneous requests that will be
; served. Equivalent to the ApacheMaxClients directive with mpm_prefork.
; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP
; CGI. The below defaults are based on a server without much resources. Don't
; forget to tweak pm.* to fit your needs.
; Note: Used when pm is set to 'static', 'dynamic' or 'ondemand'
; Note: This value is mandatory.
pm.max_children=50
; The number of child processes created on startup.
; Note: Used only when pm is set to 'dynamic'
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers=5
; The desired minimum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.min_spare_servers=5
; The desired maximum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.max_spare_servers=30
; The number of seconds after which an idle process will be killed.
; Note: Used only when pm is set to 'ondemand'
; Default Value: 10s
;pm.process_idle_timeout = 10s;
; The number of requests each child process should execute before respawning.
; This can be useful to work around memory leaks in 3rd party libraries. For
; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
; Default Value: 0
pm.max_requests = 5000
答案 0 :(得分：0)
您确定这是SQL连接的问题吗？由于您的pm.max_children设置为50，如果所有50个线程都在使用中，则会引发 502 Bad Gateway 错误。您应该尝试启动其他服务器以处理更多请求。
或者，尝试提升和降低pm.max_children并查看这是否会影响数字，并帮助得出结论。