could not resolve host: api.cloudflare.com

[fogx]

Hi, i'm trying to set up the cf-ddns, but i get the following error message:

cf-ddns | curl: (6) Could not resolve host: api.cloudflare.com
cf-ddns | ----------------------------------------------------------------
cf-ddns | ERROR: Invalid CloudFlare Credentials - 000
cf-ddns | ----------------------------------------------------------------
cf-ddns | Make sure the API_KEY is correct.

docker-compose:

  cf-ddns:
    container_name: cf-ddns
    image: oznu/cloudflare-ddns:latest
    restart: unless-stopped
    environment:
      - API_KEY=$CLOUDFLARE_ZONE_API_TOKEN
      - ZONE=$DOMAINNAME_DEV
      - PROXIED=true
      - RRTYPE=A
      - DELETE_ON_STOP=false
      - DNS_SERVER=1.1.1.1

i've followed the tutorial and created the zone api token, then added that to the .env file. Any ideas as to why i could be getting this error? I can ping the url from my server

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[harveydobson]

I have the same issue.

version: '2'
services:
  cloudflare-ddns:
    image: oznu/cloudflare-ddns:latest
    restart: always
    environment:
      - API_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
      - ZONE=xxx.co.uk
      - SUBDOMAIN=xxsubdomain
      - PROXIED=true

[jwillmer]

Came across the same issue. Anyone could fix it?

[adamaltmejd]

The same issue just started showing up on one of my servers. All other containers work but DNS resolution fails for this one. Might be related to this? https://gitlab.alpinelinux.org/alpine/aports/-/issues/12091 Because I can run

docker run --rm alpine:3.12 ping 8.8.8.8

but not

docker run --rm alpine:3.13 ping 8.8.8.8

[adamaltmejd]

Here is the solution, at least for me: https://docs.linuxserver.io/faq#libseccomp. Run (on host):

wget http://ftp.us.debian.org/debian/pool/main/libs/libseccomp/libseccomp2_2.5.1-1_armhf.deb
sudo dpkg -i libseccomp2_2.5.1-1_armhf.deb

[ethanlevine]

Recently started experiencing this issue as well. nslookup api.cloudflare.com 1.1.1.1 returns ipv6 and ipv4 records from other devices on the same home network. Double-checked that api key has proper privs and is not expired.

[Jameshudson]

Has anyone had any luck with this one? I just started getting this issue randomly. Nothing on my end changed as far as I can tell.

My docker-compose is pretty much the same as @harveydobson's expect I have PROXIED=false.

[mdesson]

Would it be possible to reopen this issue? It suddenly started happening for me this afternoon

[kdpuvvadi]

If anyone still facing the issue, it's DNS. It always the DNS. set dns to cloudflare or google dns. something

dns:
      - 127.0.0.1
      - 1.1.1.1

your Compose file should look something like this

version: '2'
services:
  cloudflare-ddns:
    image: oznu/cloudflare-ddns:latest
    restart: always
    environment:
      - API_KEY=xxxxxxx
      - ZONE=example.com
      - SUBDOMAIN=subdomain
      - PROXIED=false
    dns:
      - 127.0.0.1
      - 1.1.1.1

it's always the DNS

[jig1056]

hi @kdpuvvadi thanks a lot. That worked for me.