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服务器挂起，直到 AWS 实例重新启动后才能连接到网站

tag-icon • tag-icon nginx amazon-ec2 node.js
服务器挂起，直到 AWS 实例重新启动后才能连接到网站

我们的网站最近出现了宕机问题，这似乎是由于服务器资源不足造成的，因为只有当服务器 CPU 利用率达到 100% 时网站才会崩溃。在此期间，CPU 信用余额也会降至 0。

让网站恢复运行的唯一方法是进入 AWS 并重新启动我们的 t2 微型实例，这会导致 CPU 利用率下降，信用余额恢复。由于我无法通过 ssh 进入服务器，因此无法重新启动节点进程。

我们有一些每小时运行一次的脚本，并且 quickbooks 不断发出一些调用，我们认为这些是导致此问题的原因，但即使在解决这些问题之后，我们仍然遇到了另一次崩溃。

我尝试查看 nginx 访问日志和 nginx 错误日志，但仍然无法确定问题的原因。以下是我们的服务器崩溃时的日志。

错误日志：

2018/07/06 21:20:10 [error] 1296#1296: *27123 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 65.95.163.215, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "www"
2018/07/06 21:20:10 [error] 1296#1296: *27110 upstream prematurely closed connection while reading response header from upstream, client: 205.194.127.36, server: , request: "GET /views/submitforfunding/paymentoptions/paymentoptions.js HTTP/1.1", upstream: "http://127.0.0.1:8020/views/submitforfunding/paymentoptions/paymentoptions.js", host: ""
2018/07/06 21:20:10 [error] 1296#1296: *27144 connect() failed (111: Connection refused) while connecting to upstream, client: 69.162.124.237, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "", referrer: ""
2018/07/06 21:20:10 [error] 1296#1296: *27145 connect() failed (111: Connection refused) while connecting to upstream, client: 69.162.124.237, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "", referrer: ""
2018/07/06 21:20:10 [error] 1296#1296: *27123 connect() failed (111: Connection refused) while connecting to upstream, client: 65.95.163.215, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8020/favicon.ico", host: "", referrer: "https://"
2018/07/06 21:20:15 [alert] 1296#1296: *27126 open socket #22 left in connection 10
2018/07/06 21:20:15 [alert] 1296#1296: *27128 open socket #14 left in connection 18
2018/07/06 21:20:15 [alert] 1296#1296: *27119 open socket #16 left in connection 23
2018/07/06 21:20:15 [alert] 1296#1296: *27131 open socket #24 left in connection 28
2018/07/06 21:20:15 [alert] 1296#1296: *27121 open socket #4 left in connection 30
2018/07/06 21:20:15 [alert] 1296#1296: aborting
2018/07/06 21:22:53 [error] 1311#1311: *2 connect() failed (111: Connection refused) while connecting to upstream, client: 69.162.124.237, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "", referrer: ""
2018/07/06 21:25:20 [error] 1314#1314: *2 connect() failed (111: Connection refused) while connecting to upstream, client: 63.143.42.253, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "", referrer: "http://"
2018/07/06 21:25:27 [crit] 1314#1314: *4 connect() to unix:/run/php/php7.1-fpm.sock failed (13: Permission denied) while connecting to upstream, client: 63.143.42.253, server: blog., request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.1-fpm.sock:", host: "blog.", referrer: "http://blog."
2018/07/06 21:25:36 [error] 1314#1314: *7 connect() failed (111: Connection refused) while connecting to upstream, client: 69.162.124.237, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "", referrer: "http://www."
2018/07/06 21:25:46 [error] 1314#1314: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 65.95.163.215, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: ""
2018/07/06 21:25:47 [error] 1314#1314: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 65.95.163.215, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8020/favicon.ico", host: "", referrer: "https:///"
2018/07/06 21:25:52 [error] 1314#1314: *16 connect() failed (111: Connection refused) while connecting to upstream, client: 69.162.124.237, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "", referrer: "http://www."
2018/07/06 21:26:00 [error] 1314#1314: *18 connect() failed (111: Connection refused) while connecting to upstream, client: 96.20.89.42, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "www."
2018/07/06 21:26:00 [error] 1314#1314: *18 connect() failed (111: Connection refused) while connecting to upstream, client: 96.20.89.42, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8020/favicon.ico", host: "www.", referrer: "https://www./"
2018/07/06 21:26:02 [error] 1314#1314: *21 connect() failed (111: Connection refused) while connecting to upstream, client: 65.95.163.215, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8020/", host: "www."

访问日志：

165.227.83.148 - - [06/Jul/2018:21:05:57 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
138.197.150.151 - - [06/Jul/2018:21:05:57 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:06:21 +0000] "HEAD / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:06:42 +0000] "HEAD / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:07:30 +0000] "HEAD / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:07:30 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:07:50 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:08:31 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:08:31 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:08:51 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
54.67.10.127 - - [06/Jul/2018:21:09:12 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
165.227.83.148 - - [06/Jul/2018:21:09:31 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
128.199.195.156 - - [06/Jul/2018:21:10:15 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:10:15 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
146.185.143.14 - - [06/Jul/2018:21:10:42 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
165.227.83.148 - - [06/Jul/2018:21:11:06 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:11:48 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:11:48 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:12:09 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:12:46 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:12:46 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:13:04 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:13:40 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:13:40 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:13:58 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:14:43 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:14:43 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:15:04 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:15:51 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:15:51 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:16:12 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:16:53 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:16:53 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:17:14 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:17:35 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:18:21 +0000] "GET / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:18:21 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:18:43 +0000] "GET / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:19:03 +0000] "GET / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
216.244.66.234 - - [06/Jul/2018:21:20:10 +0000] "GET /tag/failure/feed/ HTTP/1.1" 499 0 "-" "Mozilla/5.0 (compatible; DotBot/1.1; http://www.opensiteexplorer.org/dotbot, [email protected])"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 0 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
180.76.188.144 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.0" 499 0 "-" "-"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 499 0 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 500 262 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
65.95.163.215 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 502 584 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
205.194.127.36 - - [06/Jul/2018:21:20:10 +0000] "GET /views/submitforfunding/paymentoptions/paymentoptions.js HTTP/1.1" 502 182 "-" "Mozilla/4.0 (compatible;)"
180.76.15.151 - - [06/Jul/2018:21:20:10 +0000] "GET /tag/venturx/ HTTP/1.1" 500 262 "-" "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:20:10 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
65.95.163.215 - - [06/Jul/2018:21:20:10 +0000] "GET /favicon.ico HTTP/1.1" 502 584 "https://www./" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
69.162.124.237 - - [06/Jul/2018:21:22:52 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:22:53 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:25:19 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:25:20 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
63.143.42.253 - - [06/Jul/2018:21:25:27 +0000] "GET / HTTP/1.1" 502 182 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:25:36 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:25:36 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
65.95.163.215 - - [06/Jul/2018:21:25:46 +0000] "GET / HTTP/1.1" 502 584 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
65.95.163.215 - - [06/Jul/2018:21:25:47 +0000] "GET /favicon.ico HTTP/1.1" 502 584 "https:///" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
69.162.124.237 - - [06/Jul/2018:21:25:51 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:25:52 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
96.20.89.42 - - [06/Jul/2018:21:26:00 +0000] "GET / HTTP/1.1" 502 584 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
96.20.89.42 - - [06/Jul/2018:21:26:00 +0000] "GET /favicon.ico HTTP/1.1" 502 584 "https://www./" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
65.95.163.215 - - [06/Jul/2018:21:26:02 +0000] "GET / HTTP/1.1" 502 584 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
65.95.163.215 - - [06/Jul/2018:21:26:02 +0000] "GET /favicon.ico HTTP/1.1" 502 584 "https://www./" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36"
146.185.241.50 - - [06/Jul/2018:21:26:18 +0000] "GET /2017/07/28/survey-product-market-fit-24-hours/ HTTP/1.0" 502 182 "https://blog./2017/07/28/survey-product-market-fit-24-hours/#comment-1457/" "Mozilla/5.0 (Windows NT 10.1; rv:37.0) Gecko/20100101 Firefox/37.0"
63.143.42.253 - - [06/Jul/2018:21:26:19 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
146.185.241.50 - - [06/Jul/2018:21:26:19 +0000] "GET / HTTP/1.0" 502 182 "https://blog./" "Mozilla/5.0 (Windows NT 10.1; rv:37.0) Gecko/20100101 Firefox/37.0"
63.143.42.253 - - [06/Jul/2018:21:26:19 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
146.185.241.50 - - [06/Jul/2018:21:26:20 +0000] "GET / HTTP/1.0" 502 182 "https:///" "Mozilla/5.0 (Windows NT 10.1; rv:37.0) Gecko/20100101 Firefox/37.0"
63.143.42.253 - - [06/Jul/2018:21:26:27 +0000] "GET / HTTP/1.1" 502 182 "http://blog." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:26:36 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:26:37 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:26:51 +0000] "GET / HTTP/1.1" 301 194 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"
69.162.124.237 - - [06/Jul/2018:21:26:51 +0000] "GET / HTTP/1.1" 502 182 "http://www." "Mozilla/5.0+(compatible; UptimeRobot/2.0; http://www.uptimerobot.com/)"

访问日志显示正常运行时间机器人每 30 秒左右对我们的服务器进行一次攻击，但我不认为这是问题的根源，因为这个正常运行时间机器人早在我们的网站开始出现问题之前就已经这样配置了。

如果有人能指出我们的日志中我应该查看的任何问题或者有什么我可以查看的内容，我将不胜感激。

编辑：

这是 nginx 配置：

server {
    listen 80;
    return 301 https
}

server {
    listen 443 ssl;
    client_max_body_size 800M;
    ssl_protocols            TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers  on;
    ssl_session_cache    shared:SSL:10m;
    ssl_session_timeout  24h;
    keepalive_timeout 300;
    add_header Strict-Transport-Security 'max-age=31536000; includeSubDomains';
    location / {
    proxy_pass http://localhost:8020/;
}

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