[我在 Nginx 论坛上发布了这个，但一周后没有回复，所以在这里尝试]
我是 Linux 和 Nginx 新手，但已经学会了足够的知识来安装和运行它，并作为两个内部网络服务器的简单反向代理工作。这几个月来一直运行良好，但我最近开始收到 500 个错误。
这是/var/log/nginx/error.log
（我已将我们的公司名称替换为“companyname.com”并将我们的公共 WAN IP 地址替换为
2020/02/10 15:17:49 [alert] 1069#1069: *1011 socket() failed (24: Too many open files) while connecting to upstream, client: 10.10.10.1, server: web1.companyname.com, request: "GET / HTTP/1.0", upstream: "https://<WANIP>:443/", host: "web1.companyname.com"
2020/02/10 15:21:41 [alert] 1069#1069: *2022 socket() failed (24: Too many open files) while connecting to upstream, client: 10.10.10.1, server: web2.companyname.com, request: "GET / HTTP/1.0", upstream: "https://<WANIP>:443/", host: "web2.companyname.com"
2020/02/10 15:33:28 [alert] 1084#1084: *19987 socket() failed (24: …