504 - nginx + fastcgi + Django souvent 504

Question

Le nombre de visites sur le site Web est très faible. Il y avait une période pendant laquelle une erreur 504 apparaissait lorsque je revenais après chaque week-end. Plus tard, la fréquence devenait de plus en plus élevée, à partir d'un jour. une semaine à une demi-journée, mais il n'y avait rien dans le code intermédiaire. Gros changement, ça fait bizarre.
Les résultats obtenus en exécutant la commande netstat sur le serveur sont les suivants :
Je ne sais pas comment vous déboguez habituellement ce genre de problème ? Il existe également des sockets de domaine Active UNIX (sans serveurs)
Y a-t-il un problème avec ces deux éléments ci-dessous ?

$ netstat
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
tcp        0      0 localhost:9099              localhost:45614             SYN_RECV    
tcp        0      0 localhost:9099              localhost:45615             SYN_RECV    
tcp        0      0 localhost:9099              localhost:45613             SYN_RECV    
tcp        0      0 localhost:9099              localhost:45612             SYN_RECV    
tcp        0      0 localhost:9099              localhost:45616             SYN_RECV    
tcp      513      0 localhost:9099              localhost:44474             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44375             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44423             CLOSE_WAIT  
tcp      457      0 localhost:9099              localhost:44365             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44517             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44346             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44378             CLOSE_WAIT  
tcp        0    521 localhost:45614             localhost:9099              FIN_WAIT1   
tcp      505      0 localhost:9099              localhost:44399             CLOSE_WAIT  
tcp        0    561 localhost:45615             localhost:9099              FIN_WAIT1   
tcp      625      0 localhost:9099              localhost:44337             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44402             CLOSE_WAIT  
tcp      561      0 localhost:9099              localhost:44425             CLOSE_WAIT  
tcp      673      0 localhost:9099              localhost:44409             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44416             CLOSE_WAIT  
tcp      625      0 localhost:9099              localhost:44508             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44433             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44442             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44405             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44341             CLOSE_WAIT  
tcp      657      0 localhost:9099              localhost:44503             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44336             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44489             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44382             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44397             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44370             CLOSE_WAIT  
tcp      521      0 localhost:9099              localhost:44521             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44340             CLOSE_WAIT  
tcp      521      0 localhost:9099              localhost:44494             CLOSE_WAIT  
tcp      441      0 localhost:9099              localhost:44478             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44391             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44495             CLOSE_WAIT  
tcp      521      0 localhost:9099              localhost:44332             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44473             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44470             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44468             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44424             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44447             CLOSE_WAIT  
tcp      473      0 localhost:9099              localhost:44361             CLOSE_WAIT  
tcp      473      0 localhost:9099              localhost:44484             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44412             CLOSE_WAIT  
tcp      625      0 localhost:9099              localhost:44383             CLOSE_WAIT  
tcp      625      0 localhost:9099              localhost:44355             CLOSE_WAIT  
tcp      473      0 localhost:9099              localhost:44481             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44446             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44394             CLOSE_WAIT  
tcp      489      0 localhost:9099              localhost:44324             CLOSE_WAIT  
tcp      545      0 localhost:9099              localhost:44400             CLOSE_WAIT  
tcp      481      0 localhost:9099              localhost:44487             CLOSE_WAIT  
tcp      625      0 localhost:9099              localhost:44418             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44457             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44438             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44502             CLOSE_WAIT  
tcp      681      0 localhost:9099              localhost:44344             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44486             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44323             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44362             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44327             CLOSE_WAIT  
tcp      457      0 localhost:9099              localhost:44522             CLOSE_WAIT  
tcp      521      0 localhost:9099              localhost:44513             CLOSE_WAIT  
tcp      569      0 localhost:9099              localhost:44458             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44437             CLOSE_WAIT  
tcp      569      0 localhost:9099              localhost:pmcd              CLOSE_WAIT  
tcp      489      0 localhost:9099              localhost:44462             CLOSE_WAIT  
tcp      569      0 localhost:9099              localhost:44328             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44485             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44430             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44434             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44453             CLOSE_WAIT  
tcp      481      0 localhost:9099              localhost:44519             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44480             CLOSE_WAIT  
tcp      681      0 localhost:9099              localhost:44401             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44334             CLOSE_WAIT  
tcp      481      0 localhost:9099              localhost:44482             CLOSE_WAIT  
tcp      673      0 localhost:9099              localhost:44455             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44428             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44518             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:pmcdproxy         CLOSE_WAIT  
tcp      489      0 localhost:9099              localhost:44498             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44467             CLOSE_WAIT  
tcp      433      0 localhost:9099              localhost:44477             CLOSE_WAIT  
tcp      457      0 localhost:9099              localhost:44363             CLOSE_WAIT  
tcp      681      0 localhost:9099              localhost:44451             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44385             CLOSE_WAIT  
tcp        0      0 xx.xx.xx.xx:http        crawl-66-249-76-235.g:36350 ESTABLISHED 
tcp      473      0 localhost:9099              localhost:44358             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44444             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44353             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44325             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44377             CLOSE_WAIT  
tcp      673      0 localhost:9099              localhost:44501             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44499             CLOSE_WAIT  
tcp        0      0 xx.xx.xx.xx:ssh         114.248.169.70:56609        ESTABLISHED 
tcp      689      0 localhost:9099              localhost:44516             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44364             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44359             CLOSE_WAIT  
tcp        0      0 xx.xx.xx.xx:ssh         114.248.169.70:57441        ESTABLISHED 
tcp      521      0 localhost:9099              localhost:44415             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44395             CLOSE_WAIT  
tcp      521      0 localhost:9099              localhost:44411             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44360             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44413             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44406             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44356             CLOSE_WAIT  
tcp      905      0 localhost:9099              localhost:44440             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44465             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44510             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44347             CLOSE_WAIT  
tcp      521      0 localhost:9099              localhost:44372             CLOSE_WAIT  
tcp      625      0 localhost:9099              localhost:44366             CLOSE_WAIT  
tcp      489      0 localhost:9099              localhost:44338             CLOSE_WAIT  
tcp      465      0 localhost:9099              localhost:44483             CLOSE_WAIT  
tcp      905      0 localhost:9099              localhost:44436             CLOSE_WAIT  
tcp      449      0 localhost:9099              localhost:44379             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44393             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44403             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44371             CLOSE_WAIT  
tcp      513      0 localhost:9099              localhost:44374             CLOSE_WAIT  
tcp      505      0 localhost:9099              localhost:44333             CLOSE_WAIT  
tcp      625      0 localhost:9099              localhost:44461             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44449             CLOSE_WAIT  
tcp      681      0 localhost:9099              localhost:44497             CLOSE_WAIT  
tcp      905      0 localhost:9099              localhost:44476             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44491             CLOSE_WAIT  
tcp        0    520 localhost:45616             localhost:9099              ESTABLISHED 
tcp      513      0 localhost:9099              localhost:44504             CLOSE_WAIT  
tcp      689      0 localhost:9099              localhost:44384             CLOSE_WAIT  
tcp      441      0 localhost:9099              localhost:44512             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44479             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44427             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44414             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44432             CLOSE_WAIT  
tcp      497      0 localhost:9099              localhost:44463             CLOSE_WAIT  
tcp      673      0 localhost:9099              localhost:44352             CLOSE_WAIT  
tcp      633      0 localhost:9099              localhost:44396             CLOSE_WAIT  
tcp        0   4860 xx.xx.xx.xx:ssh         123.120.30.5:38913          ESTABLISHED 
Active UNIX domain sockets (w/o servers)
Proto RefCnt Flags       Type       State         I-Node Path
unix  2      [ ]         DGRAM                    609897 @/org/kernel/udev/udevd
unix  2      [ ]         DGRAM                    16202  @/org/freedesktop/hal/udev_event
unix  16     [ ]         DGRAM                    628931 /dev/log
unix  3      [ ]         STREAM     CONNECTED     31371466 
unix  3      [ ]         STREAM     CONNECTED     31371465 
unix  2      [ ]         DGRAM                    31371462 
unix  2      [ ]         DGRAM                    31368809 
unix  2      [ ]         UNKNOWN    DISCONNECTING 0      
unix  2      [ ]         STREAM                   31356911 
unix  2      [ ]         DGRAM                    31356908 
unix  2      [ ]         UNKNOWN    DISCONNECTING 0      
unix  2      [ ]         STREAM                   31342249 
unix  2      [ ]         DGRAM                    31342246 
unix  2      [ ]         UNKNOWN    DISCONNECTING 0      
unix  2      [ ]         STREAM                   31318762 
unix  2      [ ]         DGRAM                    31318761 
unix  2      [ ]         UNKNOWN    DISCONNECTING 0      
unix  2      [ ]         STREAM                   31263304 
unix  2      [ ]         DGRAM                    31263300 
unix  3      [ ]         STREAM     CONNECTED     31253401 
unix  3      [ ]         STREAM     CONNECTED     31253400 
unix  3      [ ]         STREAM     CONNECTED     31253399 
unix  3      [ ]         STREAM     CONNECTED     31253398 
unix  3      [ ]         STREAM     CONNECTED     31253397 
unix  3      [ ]         STREAM     CONNECTED     31253396 
unix  3      [ ]         STREAM     CONNECTED     31253395 
unix  3      [ ]         STREAM     CONNECTED     31253394 
unix  2      [ ]         STREAM     CONNECTED     31253390 
unix  3      [ ]         STREAM     CONNECTED     31253287 
unix  3      [ ]         STREAM     CONNECTED     31253286 
unix  2      [ ]         DGRAM                    31253283 
unix  3      [ ]         STREAM     CONNECTED     31247947 
unix  3      [ ]         STREAM     CONNECTED     31247946 
unix  3      [ ]         STREAM     CONNECTED     31247945 
unix  3      [ ]         STREAM     CONNECTED     31247944 
unix  3      [ ]         STREAM     CONNECTED     31247943 
unix  3      [ ]         STREAM     CONNECTED     31247942 
unix  3      [ ]         STREAM     CONNECTED     31247941 
unix  3      [ ]         STREAM     CONNECTED     31247940 
unix  2      [ ]         STREAM     CONNECTED     31247936 
unix  3      [ ]         STREAM     CONNECTED     31178429 
unix  3      [ ]         STREAM     CONNECTED     31178428 
unix  3      [ ]         STREAM     CONNECTED     31171939 
unix  3      [ ]         STREAM     CONNECTED     31171938 
unix  2      [ ]         DGRAM                    31171935 
unix  3      [ ]         STREAM     CONNECTED     27227510 
unix  3      [ ]         STREAM     CONNECTED     27227509 
unix  3      [ ]         STREAM     CONNECTED     27227508 
unix  3      [ ]         STREAM     CONNECTED     27227507 
unix  3      [ ]         STREAM     CONNECTED     27227506 
unix  3      [ ]         STREAM     CONNECTED     27227505 
unix  3      [ ]         STREAM     CONNECTED     27227504 
unix  3      [ ]         STREAM     CONNECTED     27227503 
unix  3      [ ]         STREAM     CONNECTED     27227502 
unix  3      [ ]         STREAM     CONNECTED     27227501 
unix  3      [ ]         STREAM     CONNECTED     27227500 
unix  3      [ ]         STREAM     CONNECTED     27227499 
unix  3      [ ]         STREAM     CONNECTED     27227498 
unix  3      [ ]         STREAM     CONNECTED     27227497 
unix  3      [ ]         STREAM     CONNECTED     27227496 
unix  3      [ ]         STREAM     CONNECTED     27227495 
unix  3      [ ]         STREAM     CONNECTED     27227494 
unix  3      [ ]         STREAM     CONNECTED     27227493 
unix  3      [ ]         STREAM     CONNECTED     27227492 
unix  3      [ ]         STREAM     CONNECTED     27227491 
unix  2      [ ]         STREAM     CONNECTED     27227487 
unix  2      [ ]         DGRAM                    24840891 
unix  2      [ ]         DGRAM                    24840814 
unix  2      [ ]         DGRAM                    24834624 
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  2      [ ]         STREAM     CONNECTING    0      /var/run/abrt/abrt.socket
unix  3      [ ]         STREAM     CONNECTED     1131884 
unix  3      [ ]         STREAM     CONNECTED     1131883 
unix  3      [ ]         STREAM     CONNECTED     1131882 
unix  3      [ ]         STREAM     CONNECTED     1131881 
unix  3      [ ]         STREAM     CONNECTED     1131880 
unix  3      [ ]         STREAM     CONNECTED     1131879 
unix  3      [ ]         STREAM     CONNECTED     1131878 
unix  3      [ ]         STREAM     CONNECTED     1131877 
unix  2      [ ]         STREAM     CONNECTED     1131873 
unix  2      [ ]         DGRAM                    1088807 
unix  2      [ ]         DGRAM                    631192 
unix  2      [ ]         DGRAM                    629682 
unix  2      [ ]         DGRAM                    625326 
unix  2      [ ]         DGRAM                    616785 
unix  3      [ ]         DGRAM                    609927 
unix  3      [ ]         DGRAM                    609926 
unix  3      [ ]         STREAM     CONNECTED     17181  
unix  3      [ ]         STREAM     CONNECTED     17180  
unix  3      [ ]         STREAM     CONNECTED     17177  
unix  3      [ ]         STREAM     CONNECTED     17176  
unix  3      [ ]         STREAM     CONNECTED     17173  
unix  3      [ ]         STREAM     CONNECTED     17172  
unix  3      [ ]         STREAM     CONNECTED     17168  
unix  3      [ ]         STREAM     CONNECTED     17167  
unix  3      [ ]         STREAM     CONNECTED     17164  
unix  3      [ ]         STREAM     CONNECTED     17163  
unix  3      [ ]         STREAM     CONNECTED     17160  
unix  3      [ ]         STREAM     CONNECTED     17159  
unix  3      [ ]         STREAM     CONNECTED     17155  
unix  3      [ ]         STREAM     CONNECTED     17154  
unix  3      [ ]         STREAM     CONNECTED     17151  
unix  3      [ ]         STREAM     CONNECTED     17150  
unix  3      [ ]         STREAM     CONNECTED     17147  
unix  3      [ ]         STREAM     CONNECTED     17145  
unix  3      [ ]         STREAM     CONNECTED     17142  
unix  3      [ ]         STREAM     CONNECTED     17141  
unix  3      [ ]         STREAM     CONNECTED     17138  
unix  3      [ ]         STREAM     CONNECTED     17137  
unix  3      [ ]         STREAM     CONNECTED     17134  
unix  3      [ ]         STREAM     CONNECTED     17133  
unix  3      [ ]         STREAM     CONNECTED     17130  
unix  3      [ ]         STREAM     CONNECTED     17129  
unix  3      [ ]         STREAM     CONNECTED     17126  
unix  3      [ ]         STREAM     CONNECTED     17125  
unix  3      [ ]         STREAM     CONNECTED     17122  
unix  3      [ ]         STREAM     CONNECTED     17121  
unix  3      [ ]         STREAM     CONNECTED     17118  
unix  3      [ ]         STREAM     CONNECTED     17117  
unix  3      [ ]         STREAM     CONNECTED     17114  
unix  3      [ ]         STREAM     CONNECTED     17113  
unix  3      [ ]         STREAM     CONNECTED     17110  
unix  3      [ ]         STREAM     CONNECTED     17109  
unix  3      [ ]         STREAM     CONNECTED     17106  
unix  3      [ ]         STREAM     CONNECTED     17105  
unix  3      [ ]         STREAM     CONNECTED     17102  
unix  3      [ ]         STREAM     CONNECTED     17101  
unix  3      [ ]         STREAM     CONNECTED     17098  
unix  3      [ ]         STREAM     CONNECTED     17097  
unix  3      [ ]         STREAM     CONNECTED     17094  
unix  3      [ ]         STREAM     CONNECTED     17093  
unix  3      [ ]         STREAM     CONNECTED     17090  
unix  3      [ ]         STREAM     CONNECTED     17089  
unix  3      [ ]         STREAM     CONNECTED     17087  
unix  3      [ ]         STREAM     CONNECTED     17086  
unix  2      [ ]         DGRAM                    17036  
unix  3      [ ]         STREAM     CONNECTED     16423  /var/run/acpid.socket
unix  3      [ ]         STREAM     CONNECTED     16422  
unix  3      [ ]         STREAM     CONNECTED     16417  @/var/run/hald/dbus-PLTrnFGoYa
unix  3      [ ]         STREAM     CONNECTED     16416  
unix  3      [ ]         STREAM     CONNECTED     16378  @/var/run/hald/dbus-PLTrnFGoYa
unix  3      [ ]         STREAM     CONNECTED     16297  
unix  3      [ ]         STREAM     CONNECTED     16197  @/var/run/hald/dbus-YyLOb5j6TM
unix  3      [ ]         STREAM     CONNECTED     16196  
unix  3      [ ]         STREAM     CONNECTED     16175  /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     16174  
unix  2      [ ]         DGRAM                    16141  
unix  3      [ ]         STREAM     CONNECTED     16021  /var/run/dbus/system_bus_socket
unix  3      [ ]         STREAM     CONNECTED     16020  
unix  3      [ ]         STREAM     CONNECTED     16015  
unix  3      [ ]         STREAM     CONNECTED     16014  
unix  3      [ ]         STREAM     CONNECTED     13036  
unix  3      [ ]         STREAM     CONNECTED     13035   

Answer 1

Si une erreur 504 se produit. Principalement, le temps de demande de service ultérieur de l'entité est estimé comme étant relativement long. En fait, vous pouvez essayer cela en ajoutant quelques paramètres à votre nginx. Utilisez fastcgi ou un proxy inverse pour ajouter un délai d'attente. Il existe également client_header_timeout, client_body_timeout, send_timeout.