Question

我已将Cloud DNS配置为在Google数据存储上提供静态网站，以测试其正常工作。我已经成功地配置了一个例外。

我可以通过

访问我的网站

www.example.com。（注意尾随点）

我希望它可以在

访问

www.example.com （不带尾点，但不是）

受管区域会自动添加尾随点，因此我无法对其进行编辑（因为这意味着其为绝对域）。在CNAME上，我对其进行了如下配置：

我毫不奇怪，我对Cloud DNS在此问题上的工作原理感到有些困惑。

编辑：以@PatrickMezvek的身份指出混淆。域名是www.scolacademy.com。 link

我尝试 nslookup ，并且一切正常：

>> nslookup www.scolacademy.com
Server:     216.230.147.90
Address:    216.230.147.90#53

Non-authoritative answer:
www.scolacademy.com canonical name = c.storage.googleapis.com.
c.storage.googleapis.com    canonical name = storage.l.googleusercontent.com.
Name:   storage.l.googleusercontent.com
Address: 172.217.3.144

>> nslookup www.scolacademy.com.

# Same output

对于挖掘：（两个域，带/不带尾点）

; <<>> DiG 9.10.6 <<>> www.scolacademy.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11676
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.scolacademy.com.       IN  A

;; ANSWER SECTION:
www.scolacademy.com.    182 IN  CNAME   c.storage.googleapis.com.
c.storage.googleapis.com. 3060  IN  CNAME   storage.l.googleusercontent.com.
storage.l.googleusercontent.com. 149 IN A   172.217.3.144

;; Query time: 21 msec
;; SERVER: 216.230.147.90#53(216.230.147.90)
;; WHEN: Thu Apr 04 09:14:36 CST 2019
;; MSG SIZE  rcvd: 141

两个域都可以在iOS 12.2中使用。在Chrome（73.0.3683.86）（与Firefox和Safari相同）上却没有。以下是Web浏览器的屏幕截图：

无尾点尾随道奇

Answer 1

尾随点是FQDN的一部分，它表示Internet域名层次结构系统中的“根区域”。因此，从上到下是“ .dot”表示根，然后是顶级域名，例如“ com”或“ org”，然后是公司或组织的域名“ google”，以及子域名“ www”。但是通常我们不需要在域名末尾键入“。”，因为系统会自动添加它。我猜您的域当时无法使用，因为根据您的屏幕截图，CNAME记录TTL为5分钟。传播到您向其发送请求的DNS服务器将花费一些时间。因此，如果您现在尝试使用域名，它应该可以使用结尾的句点。

有关FQDN的详细信息，请参考以下链接： https://en.wikipedia.org/wiki/Fully_qualified_domain_name

Answer 2

您的CNAME似乎正常运行，所以我看不到您的问题在哪里：

$ dig www.scolacademy.com. +noall +answer

; <<>> DiG 9.12.0 <<>> www.scolacademy.com. +noall +answer
;; global options: +cmd
www.scolacademy.com.    5m IN CNAME c.storage.googleapis.com.
c.storage.googleapis.com. 1h IN CNAME storage.l.googleusercontent.com.
storage.l.googleusercontent.com. 4m45s IN A 172.217.164.176

HTTP可以使用或不使用结尾点，由于证书问题，HTTPS在两种情况下均不起作用。

$ wget -S -O /dev/null https://www.scolacademy.com/
--2019-04-04 10:05:26--  https://www.scolacademy.com/
Resolving www.scolacademy.com (www.scolacademy.com)... 172.217.164.176
Connecting to www.scolacademy.com (www.scolacademy.com)|172.217.164.176|:443... connected.
ERROR: no certificate subject alternative name matches
    requested host name ‘www.scolacademy.com’.
To connect to www.scolacademy.com insecurely, use `--no-check-certificate'.

$ wget -S -O /dev/null https://www.scolacademy.com./
--2019-04-04 10:05:32--  https://www.scolacademy.com./
Resolving www.scolacademy.com. (www.scolacademy.com.)... 172.217.164.176
Connecting to www.scolacademy.com. (www.scolacademy.com.)|172.217.164.176|:443... connected.
ERROR: no certificate subject alternative name matches
    requested host name ‘www.scolacademy.com’.
To connect to www.scolacademy.com. insecurely, use `--no-check-certificate'.

$ wget -S -O /dev/null http://www.scolacademy.com./
--2019-04-04 10:06:55--  http://www.scolacademy.com./
Resolving www.scolacademy.com. (www.scolacademy.com.)... 172.217.164.144
Connecting to www.scolacademy.com. (www.scolacademy.com.)|172.217.164.144|:80... connected.
HTTP request sent, awaiting response...
  HTTP/1.1 200 OK
  X-GUploader-UploadID: AEnB2Upc9_GNBAVPkyjjomj_pEp6QsakmVqx3rBnVYq-SoyJPRHGvo191ATaxx5ao3dEuVbkW7pWFyENN2rNEUEnezERTfYs6g
  Expires: Thu, 04 Apr 2019 15:06:56 GMT
  Date: Thu, 04 Apr 2019 15:06:56 GMT
  Cache-Control: private, max-age=0
  Last-Modified: Fri, 15 Feb 2019 06:13:22 GMT
  ETag: "9ec985ae3f1c1158205025e7925342e4"
  x-goog-generation: 1550211202935263
  x-goog-metageneration: 1
  x-goog-stored-content-encoding: identity
  x-goog-stored-content-length: 3704
  Content-Type: text/html
  x-goog-hash: crc32c=uC9tbQ==
  x-goog-hash: md5=nsmFrj8cEVggUCXnklNC5A==
  x-goog-storage-class: MULTI_REGIONAL
  Accept-Ranges: bytes
  Content-Length: 3704
  Server: UploadServer
Length: 3704 (3.6K) [text/html]
Saving to: ‘/dev/null’

/dev/null                                         100%[=============================================================================================================>]   3.62K  --.-KB/s    in 0.003s

2019-04-04 10:06:56 (1.13 MB/s) - ‘/dev/null’ saved [3704/3704]

$ wget -S -O /dev/null http://www.scolacademy.com/
--2019-04-04 10:06:59--  http://www.scolacademy.com/
Resolving www.scolacademy.com (www.scolacademy.com)... 172.217.164.144
Connecting to www.scolacademy.com (www.scolacademy.com)|172.217.164.144|:80... connected.
HTTP request sent, awaiting response...
  HTTP/1.1 200 OK
  X-GUploader-UploadID: AEnB2UqmISfLaNCIpHL2gVajP2g-8xee1sroWNzJ_UVq50EJh17tDDurR_tv99J9_UVZNhr00uhxDdiLE3SA7xRgNONyq5MnWg
  Expires: Thu, 04 Apr 2019 15:06:59 GMT
  Date: Thu, 04 Apr 2019 15:06:59 GMT
  Cache-Control: private, max-age=0
  Last-Modified: Fri, 15 Feb 2019 06:13:22 GMT
  ETag: "9ec985ae3f1c1158205025e7925342e4"
  x-goog-generation: 1550211202935263
  x-goog-metageneration: 1
  x-goog-stored-content-encoding: identity
  x-goog-stored-content-length: 3704
  Content-Type: text/html
  x-goog-hash: crc32c=uC9tbQ==
  x-goog-hash: md5=nsmFrj8cEVggUCXnklNC5A==
  x-goog-storage-class: MULTI_REGIONAL
  Accept-Ranges: bytes
  Content-Length: 3704
  Server: UploadServer
Length: 3704 (3.6K) [text/html]
Saving to: ‘/dev/null’

/dev/null                                         100%[=============================================================================================================>]   3.62K  --.-KB/s    in 0.005s

2019-04-04 10:06:59 (768 KB/s) - ‘/dev/null’ saved [3704/3704]

由于您没有显示所做的特定测试，因此无法得出结论，因此没有人知道您所看到的内容。但是看来一切正常（您只需要解决证书问题）

Cloud DNS上的尾随点

2 个答案: