Can't access my website via domain name anymore

Question

I have created a KeystoneJS-based website on Google Cloud Platform a couple of months ago.

IP-address (IPv4): 35.209.129.188:3000

Domain name: seebelarus.by

I didn't do anything, I didn't change any settings but now I can't reach my website via domain name. Only IP. Are there any ways to see what settings changed and how can I fix it?

Here's info about DNS:

Answer 1

The cause of this issue is DNS misconfiguration while switching from registrar's DNS servers to Google Cloud DNS. There are no NS records for your domain seebelarus.by at the moment:

$ dig NS seebelarus.by @8.8.8.8

; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> NS seebelarus.by @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 19578
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;seebelarus.by.                 IN      NS

;; Query time: 123 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu May 28 12:57:06 UTC 2020
;; MSG SIZE  rcvd: 42

$ dig NS seebelarus.by @8.8.4.4

; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> NS seebelarus.by @8.8.4.4
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 12620
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;seebelarus.by.                 IN      NS

;; Query time: 85 msec
;; SERVER: 8.8.4.4#53(8.8.4.4)
;; WHEN: Thu May 28 12:57:15 UTC 2020
;; MSG SIZE  rcvd: 42

$ dig NS seebelarus.by @1.1.1.1

; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> NS seebelarus.by @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 14617
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;seebelarus.by.                 IN      NS

;; Query time: 727 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Thu May 28 12:57:21 UTC 2020
;; MSG SIZE  rcvd: 42

This domain was registered by Open Contact, Ltd:

$ whois seebelarus.by
Domain Name: seebelarus.by
Registrar: Open Contact, Ltd
Person: HIDDEN!
Email: HIDDEN! Details are available at http://www.cctld.by/whois/
Name Server: ns1.domain.by
Name Server: ns2.domain.by
Updated Date: 2019-11-07
Creation Date: 2015-05-03
Expiration Date: 2021-05-03

-------------------------------------------
Service provided by Reliable Software, Ltd.

To solve your issue and switch to Google Cloud DNS you should follow steps below:

1. go to registrar's domain control panel and set as new DNS servers for your domain, for your domain you should replace:

   ns1.domain.by
   ns2.domain.by
   

   with:

   ns-cloud-b1-googledomains.com
   ns-cloud-b2-googledomains.com
   ns-cloud-b3-googledomains.com
   ns-cloud-b4-googledomains.com
   

2. go to Google Cloud DNS and remove from zone NS records:

   ns1.domain.by
   ns2.domain.by
   

   you don't need them anymore, there should be only related to Google NS records:

   ns-cloud-b1-googledomains.com
   ns-cloud-b2-googledomains.com
   ns-cloud-b3-googledomains.com
   ns-cloud-b4-googledomains.com
   

   keep unchanged A record and it's a good time to add CNAME record for www.seebelarus.by.

More details you can find in the documentation Cloud DNS Quickstart.

After that, you should wait 24-48 hours for DNS propagation. You can check status of DNS propagation for your domain with online tools like dnsmap.io, https://dnschecker.org/ or similar.

UPDATE

DNS configuration looks good now:

$ whois seebelarus.by
Domain Name: seebelarus.by
Registrar: Open Contact, Ltd
Person: HIDDEN!
Email: HIDDEN! Details are available at http://www.cctld.by/whois/
Name Server: ns-cloud-b1.googledomains.com
Name Server: ns-cloud-b2.googledomains.com
Name Server: ns-cloud-b3.googledomains.com
Name Server: ns-cloud-b4.googledomains.com
Updated Date: 2020-05-29
Creation Date: 2015-05-03
Expiration Date: 2021-05-03

and

$ dig NS seebelarus.by

; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> NS seebelarus.by
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56451
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494

;; QUESTION SECTION:
;seebelarus.by.                 IN      NS

;; ANSWER SECTION:
seebelarus.by.          21599   IN      NS      ns-cloud-b1.googledomains.com.
seebelarus.by.          21599   IN      NS      ns-cloud-b2.googledomains.com.
seebelarus.by.          21599   IN      NS      ns-cloud-b3.googledomains.com.
seebelarus.by.          21599   IN      NS      ns-cloud-b4.googledomains.com.

;; Query time: 21 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Fri May 29 12:16:46 UTC 2020
;; MSG SIZE  rcvd: 163

$ host seebelarus.by
seebelarus.by has address 35.209.129.188