- 快下班了，gt系统收到商务和运营反馈说批量创建某些广告时页面始终在转圈圈。
- 前后端一起定位了半天问题，并不能找到原因。测试环境测试没有问题的。
3.我这边看slb流量带宽使用达到50M了，由于成本更合适，我们采用了带宽付费模式。我担心是否是因为出口流量达到带宽最大值就被丢弃了呢？ - 为了验证上述假设，直接拿到api容器对应的宿主机的ip和端口。然后在前端打开f12,按照原来方式触发api请求，将network中的请求复制为curl.
- 终端下使用api容器对应的宿主机ip和端口使用curl触发，同时在宿主机启动tcpdump:
[mextest@gdswarm2 ~]$ sudo tcpdump -n -A -X src host 119.57.68.20 and dst port 32953 and tcp[13]=24
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
18:45:59.948730 IP 119.57.68.20.65000 > 172.17.0.193.32953: Flags [P.], seq 1669645032:1669645949, ack 390157184, win 259, length 917
0x0000: 4514 03bd 387e 4000 3406 a289 7739 4414 E...8~@.4...w9D.
0x0010: ac11 00c1 fde8 80b9 6384 c2e8 1741 5380 ........c....AS.
0x0020: 5018 0103 ba54 0000 504f 5354 202f 6170 P....T..POST./ap
0x0030: 692f 6361 6d70 6169 676e 7320 4854 5450 i/campaigns.HTTP
0x0040: 2f31 2e31 0d0a 486f 7374 3a20 3437 2e39 /1.1..Host:.47.9
0x0050: 352e 3232 322e 3734 3a33 3239 3533 0d0a 5.222.74:32953..
0x0060: 4163 6365 7074 2d45 6e63 6f64 696e 673a Accept-Encoding:
0x0070: 2064 6566 6c61 7465 2c20 677a 6970 0d0a .deflate,.gzip..
0x0080: 4163 6365 7074 3a20 6170 706c 6963 6174 Accept:.applicat
0x0090: 696f 6e2f 6a73 6f6e 2c20 7465 7874 2f70 ion/json,.text/p
0x00a0: 6c61 696e 2c20 2a2f 2a0d 0a52 6566 6572 lain,.*/*..Refer
0x00b0: 6572 3a20 6874 7470 733a 2f2f 6765 656b er:.https://geek
0x00c0: 2e67 6474 7261 6666 6963 6164 2e63 6f6d .gdtrafficad.com
0x00d0: 2f63 7265 6174 4144 4361 6d70 6169 676e /creatADCampaign
0x00e0: 2f63 7265 6174 4361 6d70 6169 676e 0d0a /creatCampaign..
0x00f0: 4f72 6967 696e 3a20 6874 7470 733a 2f2f Origin:.https://
0x0100: 6765 656b 2e67 6474 7261 6666 6963 6164 geek.gdtrafficad
0x0110: 2e63 6f6d 0d0a 5573 6572 2d41 6765 6e74 .com..User-Agent
0x0120: 3a20 4d6f 7a69 6c6c 612f 352e 3020 284d :.Mozilla/5.0.(M
0x0130: 6163 696e 746f 7368 3b20 496e 7465 6c20 acintosh;.Intel.
0x0140: 4d61 6320 4f53 2058 2031 305f 3134 5f31 Mac.OS.X.10_14_1
0x0150: 2920 4170 706c 6557 6562 4b69 742f 3533 ).AppleWebKit/53
0x0160: 372e 3336 2028 4b48 544d 4c2c 206c 696b 7.36.(KHTML,.lik
0x0170: 6520 4765 636b 6f29 2043 6872 6f6d 652f e.Gecko).Chrome/
0x0180: 3730 2e30 2e33 3533 382e 3737 2053 6166 70.0.3538.77.Saf
0x0190: 6172 692f 3533 372e 3336 0d0a 4175 7468 ari/537.36..Auth
0x01a0: 6f72 697a 6174 696f 6e3a 2042 6561 7265 orization:.Beare
0x01b0: 7220 6579 4a68 6247 6369 4f69 4a49 557a r.eyJhbGciOiJIUz
0x01c0: 5578 4d69 4a39 2e65 794a 7a64 5749 694f UxMiJ9.eyJzdWIiO
0x01d0: 694a 6d59 5735 6e62 576c 7565 5856 6c51 iJmYW5nbWlueXVlQ
0x01e0: 4746 6b62 576c 754c 6d4e 7662 5349 7349 GFkbWluLmNvbSIsI
0x01f0: 6d46 3164 4767 694f 694a 5354 3078 4658 mF1dGgiOiJST0xFX
0x0200: 3046 4852 5535 5558 3046 4554 556c 4f4c 0FHRU5UX0FETUlOL
0x0210: 464a 5054 4556 6656 564e 4655 6949 7349 FJPTEVfVVNFUiIsI
0x0220: 6d56 3463 4349 364d 5455 304e 4445 344e mV4cCI6MTU0NDE4N
0x0230: 444d 354e 6e30 2e55 4753 6242 7462 5458 DM5Nn0.UGSbBtbTX
0x0240: 6b34 2d4a 3265 7074 6f69 4772 4966 7074 k4-J2eptoiGrIfpt
0x0250: 324b 5a4b 7a64 5a4c 7a5a 394d 767a 4f54 2KZKzdZLzZ9MvzOT
0x0260: 3647 4c66 376e 4a78 7a44 4441 3942 3942 6GLf7nJxzDDA9B9B
0x0270: 7a4b 6475 4e79 4a30 6a30 434d 6767 7549 zKduNyJ0j0CMgguI
0x0280: 7955 3067 5837 564d 5f37 4f44 410d 0a43 yU0gX7VM_7ODA..C
0x0290: 6f6e 7465 6e74 2d54 7970 653a 2061 7070 ontent-Type:.app
0x02a0: 6c69 6361 7469 6f6e 2f6a 736f 6e3b 6368 lication/json;ch
0x02b0: 6172 7365 743d 5554 462d 380d 0a43 6f6e arset=UTF-8..Con
0x02c0: 7465 6e74 2d4c 656e 6774 683a 2032 3333 tent-Length:.233
0x02d0: 0d0a 0d0a 7b22 6164 7665 7274 6973 6572 ....{"advertiser
0x02e0: 4964 223a 3334 2c22 7072 6f64 7563 7449 Id":34,"productI
0x02f0: 6422 3a32 382c 226e 616d 6522 3a22 e6b3 d":28,"name":"..
0x0300: a2e5 a587 e58a a8e7 89a9 5f41 6e64 726f .........._Andro
0x0310: 6964 222c 2261 6374 6976 6550 7269 6365 id","activePrice
0x0320: 223a 2231 3522 2c22 746f 7461 6c42 7564 ":"15","totalBud
0x0330: 6765 7422 3a22 3130 3030 3030 222c 2264 get":"100000","d
0x0340: 6179 4275 6467 6574 223a 2231 3030 3030 ayBudget":"10000
0x0350: 222c 2264 6174 6522 3a5b 2232 3031 382d ","date":["2018-
0x0360: 3131 2d30 3122 2c22 3230 3138 2d31 312d 11-01","2018-11-
0x0370: 3330 225d 2c22 6265 6769 6e44 6174 6522 30"],"beginDate"
0x0380: 3a22 3230 3138 2d31 312d 3031 222c 2265 :"2018-11-01","e
0x0390: 6e64 4461 7465 223a 2232 3031 382d 3131 ndDate":"2018-11
0x03a0: 2d33 3022 2c22 6d65 6469 6154 7970 6522 -30","mediaType"
0x03b0: 3a22 4d45 4449 415f 4255 5922 7d :"MEDIA_BUY"}
- 看到上述对应的ip和端口的信息后，使用指定端口，在宿主机启动新的tcpdump来监控何时输出响应的：
[mextest@gdswarm2 ~]$ sudo tcpdump -n -A -X dst host 119.57.68.20 and dst port 65000 and tcp[13]=24
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
18:47:38.317085 IP 172.17.0.193.32953 > 119.57.68.20.65000: Flags [P.], seq 390157184:390158314, ack 1669645949, win 243, length 1130
0x0000: 4500 0492 3fb2 4000 3f06 8f94 ac11 00c1 E...?.@.?.......
0x0010: 7739 4414 80b9 fde8 1741 5380 6384 c67d w9D......AS.c..}
0x0020: 5018 00f3 6ca4 0000 4854 5450 2f31 2e31 P...l...HTTP/1.1
0x0030: 2032 3031 2043 7265 6174 6564 0d0a 4578 .201.Created..Ex
0x0040: 7069 7265 733a 2030 0d0a 4361 6368 652d pires:.0..Cache-
0x0050: 436f 6e74 726f 6c3a 206e 6f2d 6361 6368 Control:.no-cach
0x0060: 652c 206e 6f2d 7374 6f72 652c 206d 6178 e,.no-store,.max
0x0070: 2d61 6765 3d30 2c20 6d75 7374 2d72 6576 -age=0,.must-rev
0x0080: 616c 6964 6174 650d 0a58 2d58 5353 2d50 alidate..X-XSS-P
0x0090: 726f 7465 6374 696f 6e3a 2031 3b20 6d6f rotection:.1;.mo
0x00a0: 6465 3d62 6c6f 636b 0d0a 5072 6167 6d61 de=block..Pragma
0x00b0: 3a20 6e6f 2d63 6163 6865 0d0a 4c6f 6361 :.no-cache..Loca
0x00c0: 7469 6f6e 3a20 2f61 7069 2f63 616d 7061 tion:./api/campa
0x00d0: 6967 6e73 2f37 380d 0a44 6174 653a 2054 igns/78..Date:.T
0x00e0: 6875 2c20 3038 204e 6f76 2032 3031 3820 hu,.08.Nov.2018.
0x00f0: 3130 3a34 373a 3338 2047 4d54 0d0a 436f 10:47:38.GMT..Co
0x0100: 6e6e 6563 7469 6f6e 3a20 6b65 6570 2d61 nnection:.keep-a
0x0110: 6c69 7665 0d0a 582d 6774 4d67 7241 7070 live..X-gtMgrApp
0x0120: 2d70 6172 616d 733a 2037 380d 0a41 6363 -params:.78..Acc
0x0130: 6573 732d 436f 6e74 726f 6c2d 4578 706f ess-Control-Expo
0x0140: 7365 2d48 6561 6465 7273 3a20 4175 7468 se-Headers:.Auth
0x0150: 6f72 697a 6174 696f 6e0d 0a58 2d67 744d orization..X-gtM
0x0160: 6772 4170 702d 616c 6572 743a 2067 744d grApp-alert:.gtM
0x0170: 6772 4170 702e 6361 6d70 6169 676e 2e63 grApp.campaign.c
0x0180: 7265 6174 6564 0d0a 4163 6365 7373 2d43 reated..Access-C
0x0190: 6f6e 7472 6f6c 2d41 6c6c 6f77 2d4f 7269 ontrol-Allow-Ori
0x01a0: 6769 6e3a 2068 7474 7073 3a2f 2f67 6565 gin:.https://gee
0x01b0: 6b2e 6764 7472 6166 6669 6361 642e 636f k.gdtrafficad.co
0x01c0: 6d0d 0a56 6172 793a 204f 7269 6769 6e0d m..Vary:.Origin.
0x01d0: 0a41 6363 6573 732d 436f 6e74 726f 6c2d .Access-Control-
0x01e0: 416c 6c6f 772d 4372 6564 656e 7469 616c Allow-Credential
0x01f0: 733a 2074 7275 650d 0a58 2d43 6f6e 7465 s:.true..X-Conte
0x0200: 6e74 2d54 7970 652d 4f70 7469 6f6e 733a nt-Type-Options:
0x0210: 206e 6f73 6e69 6666 0d0a 436f 6e74 656e .nosniff..Conten
0x0220: 742d 5479 7065 3a20 6170 706c 6963 6174 t-Type:.applicat
0x0230: 696f 6e2f 6a73 6f6e 3b63 6861 7273 6574 ion/json;charset
0x0240: 3d55 5446 2d38 0d0a 436f 6e74 656e 742d =UTF-8..Content-
0x0250: 4c65 6e67 7468 3a20 3530 310d 0a58 2d41 Length:.501..X-A
0x0260: 7070 6c69 6361 7469 6f6e 2d43 6f6e 7465 pplication-Conte
0x0270: 7874 3a20 6774 2d6d 6772 3a70 726f 642c xt:.gt-mgr:prod,
0x0280: 7377 6167 6765 722c 6e6f 2d6c 6971 7569 swagger,no-liqui
0x0290: 6261 7365 3a39 3839 380d 0a0d 0a7b 2261 base:9898....{"a
0x02a0: 6374 6976 6550 7269 6365 223a 3135 2c22 ctivePrice":15,"
0x02b0: 6164 7665 7274 6973 6572 223a 7b22 6368 advertiser":{"ch
0x02c0: 6563 6b53 7461 7475 7322 3a5b 7b22 6368 eckStatus":[{"ch
0x02d0: 6563 6b53 7461 7475 7322 3a22 696e 6974 eckStatus":"init
0x02e0: 222c 226d 6564 6961 223a 2257 4158 222c ","media":"WAX",
0x02f0: 226d 7367 223a 22e6 9caa e980 81e5 aea1 "msg":".........
0x0300: 222c 226f 7468 6572 7322 3a7b 7d7d 5d2c ","others":{}}],
0x0310: 2269 6422 3a33 347d 2c22 6164 7665 7274 "id":34},"advert
0x0320: 6973 6572 4964 223a 3334 2c22 6265 6769 iserId":34,"begi
0x0330: 6e44 6174 6522 3a22 3230 3138 2d31 312d nDate":"2018-11-
0x0340: 3031 222c 2263 7265 6174 6542 7922 3a31 01","createBy":1
0x0350: 372c 2263 7265 6174 6544 6174 6522 3a22 7,"createDate":"
0x0360: 3230 3138 2d31 312d 3038 5431 303a 3435 2018-11-08T10:45
0x0370: 3a35 392e 3936 315a 222c 2264 6179 4275 :59.961Z","dayBu
0x0380: 6467 6574 223a 3130 3030 302c 2264 656c dget":10000,"del
0x0390: 466c 6167 223a 224f 4e22 2c22 656e 6444 Flag":"ON","endD
0x03a0: 6174 6522 3a22 3230 3138 2d31 312d 3330 ate":"2018-11-30
0x03b0: 222c 2268 6973 746f 7279 4c69 7374 223a ","historyList":
0x03c0: 5b5d 2c22 6964 223a 3738 2c22 6d65 6469 [],"id":78,"medi
0x03d0: 614c 6973 7422 3a5b 5d2c 226d 6564 6961 aList":[],"media
0x03e0: 5479 7065 223a 224d 4544 4941 5f42 5559 Type":"MEDIA_BUY
0x03f0: 222c 226e 616d 6522 3a22 e6b3 a2e5 a587 ","name":"......
0x0400: e58a a8e7 89a9 5f41 6e64 726f 6964 222c ......_Android",
0x0410: 2270 726f 6475 6374 223a 7b22 6964 223a "product":{"id":
0x0420: 3238 7d2c 2270 726f 6475 6374 4964 223a 28},"productId":
0x0430: 3238 2c22 7374 6174 7573 223a 224e 4f5f 28,"status":"NO_
0x0440: 5245 4144 5922 2c22 746f 7461 6c42 7564 READY","totalBud
0x0450: 6765 7422 3a31 3030 3030 302c 2275 7064 get":100000,"upd
0x0460: 6174 6542 7922 3a31 372c 2275 7064 6174 ateBy":17,"updat
0x0470: 6544 6174 6522 3a22 3230 3138 2d31 312d eDate":"2018-11-
0x0480: 3038 5431 303a 3435 3a35 392e 3936 315a 08T10:45:59.961Z
0x0490: 227d
可以看到请求时间是
18:45:59.948730 IP 119.57.68.20.65000 > 172.17.0.193.32953,响应时间是18:47:38.317085 IP 172.17.0.193.32953 > 119.57.68.20.65000由此证明了延迟并不是slb或者公用网络原因导致的。因为tcpdump在宿主机上执行的。问题处在api代码层。再仔细看响应中的updateDate时间和发出请求的时间基本一致。说明写入数据库很快就完成了。但是为何返回结果却延迟了一分钟呢？
至此，我们体会了一次tcpdump为我们解忧：
sudo tcpdump -n -A -X src host 119.57.68.20 and dst port 32953 and tcp[13]=24
sudo tcpdump -n -A -X dst host 119.57.68.20 and dst port 65000 and tcp[13]=24
