cannot update wildcard * A record

Question

cannot update wildcard * A record

michael-pellegrini opened this issue 3 years ago · 9 comments

michael-pellegrini commented 3 years ago

Is it possible to update A record with name set as * ?

I can update the root domain example.com without issue.
I'm trying to update the wildcard record but unable to, instead a new record is added when I specify subdomain=*

This does not work with cloudflare because the name has to be set as * and not *.example.com

Answer 1 · 2021-10-17T13:43:24.000Z

For DDNS subdomains you create subdomains with CNAME records (with the domain name in the A record as the target). Then everything changes to the new IP as soon as the A record is updated.

Answer 2 · 2021-10-17T13:52:15.000Z

I'm using a wildcard A record * to resolve all subdomains. This way I don't have to add a Cname record for every new subdomain. I can not add * as a cname. It has to be an A record.

Answer 3 · 2021-10-17T23:42:17.000Z

So you would have to either proxy everything or nothing on CloudFlare if you had a wildcard A record?

Answer 4 · 2021-10-18T00:57:43.000Z

Yes, I'm using a reverse proxy for all subdomains to conserve IP addresses. I only update the proxy when names are changed or added. Having the ability to update the wildcard A record would be beneficial to anyone using a reverse proxy.

Answer 5 · 2021-10-18T15:55:26.000Z

@michael-pellegrini Out of curiosity I tried * and it seems to work? I also played with the Cloudflare API directly and nothing seems to be special about the wildcard domains. That is, if your zone is example.com, Cloudflare seems to treat *.example.com and * interchangeably.

Answer 6 · 2021-10-19T23:49:41.000Z

@favonia Started over with a fresh image and wildcard updates without issue.

Answer 7 · 2021-10-20T00:10:17.000Z

@favonia With the config below, only the wildcard * A record is updated. I also need the example.com A record to be updated.
If I remove the wildcard subdomain, the example.com A record will update. It seems that I cannot update both together.

version: '3.7'
services:
  ddns:
    image: oznu/cloudflare-ddns:latest
    restart: unless-stopped
    environment:
    - API_KEY=***********************************
    - ZONE=example.com
    - SUBDOMAIN=*
    ports:
   - 8080:80

Answer 8 · 2021-10-20T01:01:02.000Z

@michael-pellegrini That is a limitation of this tool. See #60. You have to follow the workaround there or use another tool. BTW, I'm not using this tool as I'm maintaining my own.

Answer 9 · 2021-10-20T01:16:27.000Z

@favonia Thanks for the update. Work around is run two instances. Since only two records need updated.