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wordpress安裝woocmmerce插件報 recv() failed (104: Connection reset by peer)問題解決

本文轉載自   查看原文   2020-09-08 13:16   685 

nginx 的 recv() failed (104: Connection reset by peer)問題解決

先講一下遇到這個問題的經歷，踩過的坑吧。

     因為公司業務需要，搭建了負載均衡架構，搭建之后發現網站頁面偶爾出現500，去分析日志，在后端真實服務器中沒有發現問題。

    由於該系統不完全是由公司的研發所研發的，是先夠買的一套系統，然后再開發的，所以牽扯的比較多，去看debug日志，發現頁面出現500的時候，debug日志中會報訪問接口超時，但這個報接口超時是訪問這個系統的供應商的接口，一開始以為是系統供應商的問題，因為報請求他們的幾口超時，去找人家，人家說人家的沒問題。換思路吧！

    debug顯示是超時，那我就把nginx里的，php里的所有超時時間都修改了，調的很大，之前以為500s已經很大了，但是，沒有解決問題，於是看了好多文檔，盡可能的將自己的超時時間設置的很大，如下：

  1.  
    fastcgi_buffer_size 128k;
  2.  
    fastcgi_buffers 4 128k;
  3.  
    fastcgi_busy_buffers_size 256k;
  4.  
    fastcgi_connect_timeout 600;
  5.  
    fastcgi_send_timeout 600;
  6.  
    fastcgi_read_timeout 600;
  7.  
     
  8.  
    proxy_buffers 4 128k;
  9.  
    proxy_busy_buffers_size 128k;
  10.  
    proxy_connect_timeout 600s;
  11.  
    proxy_read_timeout 1200;
  12.  
    proxy_send_timeout 1200;
  13.  
    keepalive_timeout 65s;
  14.  
    client_header_timeout 120s;
  15.  
    client_body_timeout 120s;
  16.  
    send_timeout 30s;

    但是，頁面還是會有500的時候。很奇怪，錯誤日志里沒有任何報錯信息，去查看php-fpm的錯誤日志，偶爾會出現busy的情況，如下圖：

WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 9 idle, and 62 total children

    這個是因為php-fpm的配置文件里設置的進程數不夠，將進程數調大就沒有問題了。主要參數有

  1.  
          pm.max_children
  2.  
          pm.start_servers
  3.  
          pm.min_spare_servers        
  4.  
          pm.max_spare_servers

     可以根據自己服務器的性能來計算設置多少值合適，修改完之后php錯誤日志不報了，可是頁面500的問題還是沒有解決，好鬧心啊！

     繼續分析，想着是不是負載均衡的原因，然后將我的負載均衡架構直接撤了，試了試不用任何架構，直接走單個的web服務器，撤了觀察了一天一夜，還是有這種情況，排除是架構的問題，又上了負載均衡，這次上了之后，突然想起來，負載均衡調度器也記錄了錯誤日志，去查看負載均衡的錯誤日志，哇！全是一個錯！如下：

  1.  
    2019/06/19 07:10:53 [error] 6744#0: *7779178 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 104.206.96.10, server: c.bailitop.com, request: "GET /login HTTP/1.1", upstream: "http:/****/login", host: "c.bailitop.com", referrer: "http://c.bailitop.com/my/courses/learning"
  2.  
    2019/06/19 07:11:09 [error] 6746#0: *7779311 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 157.55.39.99, server: c.bailitop.com, request: "GET /user/3417/learn HTTP/1.1", upstream: "http://****/user/3417/learn", host: "c.bailitop.com"
  3.  
    2019/06/19 07:11:29 [error] 6747#0: *7779428 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 223.72.77.219, server: c.bailitop.com, request: "GET /my/course/1337 HTTP/1.1", upstream: "http://****/my/course/1337", host: "c.bailitop.com", referrer: "http://c.bailitop.com/"
  4.  
    2019/06/19 07:11:29 [error] 6742#0: *7744356 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 106.39.2.230, server: c.bailitop.com, request: "GET /course/1414/activity/50238/live_trigger?eventName=doing&data%5BlastTime%5D=1560859104&data%5Bevents%5D%5Bwatching%5D%5BwatchTime%5D=60 HTTP/1.1", upstream: "http://****/course/1414/activity/50238/live_trigger?eventName=doing&data%5BlastTime%5D=1560859104&data%5Bevents%5D%5Bwatching%5D%5BwatchTime%5D=60", host: "c.bailitop.com", referrer: "http://c.bailitop.com/course/1414/activity/50238/live_entry"
  5.  
    2019/06/19 07:11:58 [error] 6746#0: *7779597 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 40.77.167.145, server: c.bailitop.com, request: "GET /user/9470/teach HTTP/1.1", upstream: "http://****/user/9470/teach", host: "c.bailitop.com"
  6.  
    2019/06/19 07:12:13 [error] 6741#0: *7779646 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 40.77.167.145, server: c.bailitop.com, request: "GET /course/explore/djt?subCategory=mylg1&orderBy=latest HTTP/1.1", upstream: "http://****/course/explore/djt?subCategory=mylg1&orderBy=latest", host: "c.bailitop.com"
  7.  
    2019/06/19 07:12:28 [error] 6742#0: *7779697 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 104.206.96.10, server: c.bailitop.com, request: "GET /register?goto=%2Fcourse%2Fexplore%2Fact%3Ffilter%255BcurrentLevelId%255D%3Dall%26filter%255Bprice%255D%3Dall%26filter%255Btype%255D%3Dall%26orderBy%3DrecommendedSeq%26page%3D8%26tag%255Btags%255D%255B8%255D%3D34 HTTP/1.1", upstream: "http://****/register?goto=%2Fcourse%2Fexplore%2Fact%3Ffilter%255BcurrentLevelId%255D%3Dall%26filter%255Bprice%255D%3Dall%26filter%255Btype%255D%3Dall%26orderBy%3DrecommendedSeq%26page%3D8%26tag%255Btags%255D%255B8%255D%3D34", host: "c.bailitop.com", referrer: "http://www.bailitop.com"
  8.  
    2019/06/19 07:12:29 [error] 6742#0: *7779705 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 106.39.2.230, server: c.bailitop.com, request: "GET /course/1414/activity/50238/live_trigger?eventName=doing&data%5BlastTime%5D=1560859104&data%5Bevents%5D%5Bwatching%5D%5BwatchTime%5D=60 HTTP/1.1", upstream: "http://****/course/1414/activity/50238/live_trigger?eventName=doing&data%5BlastTime%5D=1560859104&data%5Bevents%5D%5Bwatching%5D%5BwatchTime%5D=60", host: "c.bailitop.com", referrer: "http://c.bailitop.com/course/1414/activity/50238/live_entry"
  9.  
    2019/06/19 07:13:29 [error] 6742#0: *7779705 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 106.39.2.230, server: c.bailitop.com, request: "GET /course/1414/activity/50238/live_trigger?eventName=doing&data%5BlastTime%5D=1560859104&data%5Bevents%5D%5Bwatching%5D%5BwatchTime%5D=60 HTTP/1.1", upstream: "http://****/course/1414/activity/50238/live_trigger?eventName=doing&data%5BlastTime%5D=1560859104&data%5Bevents%5D%5Bwatching%5D%5BwatchTime%5D=60", host: "c.bailitop.com", referrer: "http://c.bailitop.com/course/1414/activity/50238/live_entry"
  10.  
    2019/06/19 07:13:32 [error] 6742#0: *7779959 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 14.116.141.249, server: c.bailitop.com, request: "GET /files/course/2019/03-01/1717233a72f9696815.jpg HTTP/1.1", upstream: "http://****/files/course/2019/03-01/1717233a72f9696815.jpg", host: "c.bailitop.com", referrer: "http://usa.bailitop.com/topics/20120712/8653.html"

     終於看到錯誤信息了，這個錯誤問了一下度娘，好多說法如下：

      解決辦法全都是這個，按照這個方法將php-fpm配置文件中的request_terminate_timeout修改成了0，重啟了php-fpm，問題沒有解決，還是有這個報錯信息，最后確定問題原因是，buffers的值設置太小的原因，最后的解決辦法是：

      將nginx的配置文件里的buffers的值設置大一些，下面對比一下修改之前和修改之后的：

      修改之前： 

  1.  
    client_max_body_size 1024m;
  2.  
    client_body_buffer_size 512k;
  3.  
    client_header_buffer_size 512k;
  4.  
    proxy_buffers 4 64k;
  5.  
    proxy_busy_buffers_size 64k;

        修改之后：

  1.  
    client_max_body_size 1024m;
  2.  
    client_body_buffer_size 10m;
  3.  
    client_header_buffer_size 10m;
  4.  
    proxy_buffers 4 128k;
  5.  
    proxy_busy_buffers_size 128k;

         將參數調大之后，動態監控錯誤日志，recv() failed (104: Connection reset by peer)錯誤不再出現了，也沒有發現頁面報500了，好了，問題解決了。這個問題解決了好久，一直解決的方向不對，所以吸取經驗，以后希望能夠對症下葯，一針見血，不會走太多的彎路。

         另外出現這個問題的原因，也有可能是后端真實服務器和負載均衡調度器之間端口沒有放行，比如后端真實服務器的監聽端口是8091，而防火牆沒有放行8091端口，也會導致這種錯誤


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