DDNS script example to update CloudFlare not working

[AppleBag]

Hi

I copied/pasted verbatim, the CF example script (here) to update my "A" record.

Edited the respective areas, placed it in my jffs/scripts folder and set it's permissions executable. Now in the logs it says it's failing:

--

Apr 6 20:39:57 start_ddns: update CUSTOM , wan_unit 0
Apr 6 20:39:57 custom_script: Running /jffs/scripts/ddns-start (args: 12.12.12.12)
Apr 6 20:39:59 ddns: Custom ddns update failed

--

I'm not super-schooled in either bash scripting or linux, but I grabbed a copy of Cygwin and tried to run the script locally, and it also shows it's failing. Here is how my actual script looks (the keys.ids, email & domain have been randomly changed to 'anon' them, but my actual script has the real ones there.)

--

#!/bin/sh

EMAIL="mycfemail@gmail.com"
ZONEID="3d232432434343243e0f3c16d0e536ac"
RECORDID="12123432428780"
RECORDNAME="my.domain.org"
API="d5188c2132323132112324e1c811108a000f"
IP=${1}

curl -fs -o /dev/null -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONEID/dns_records/$RECORDID" \
-H "X-Auth-Email: $EMAIL" \
-H "X-Auth-Key: $API" \
-H "Content-Type: application/json" \
--data "{\"type\":\"A\",\"name\":\"$RECORDNAME\",\"content\":\"$IP\",\"ttl\":120,\"proxied\":false}"

if [ $? -eq 0 ]; then
/sbin/ddns_custom_updated 1
else
/sbin/ddns_custom_updated 0
fi

--

Any idea what's wrong?

TIA

 

[PeterT]

I'd be suspicious of the URL in the PUT. I doubt it should include cli...

Sent from my Nexus 7 using Tapatalk

 

[snbgrant]

I came across this thread when I was looking for a Cloudflare DDNS script I could use for my set up. I didn't troubleshoot the OP's thread, but I did create a working DDNS script.

https://github.com/ulygit/asus_rt_ac68u

Please let me know if you find any errors or omissions.

Also, quickly looking at the OP's pasted code, I'd recommend removing the "-o /dev/null" arguments so you can see the output response from the Cloudflare service. It's possible Cloudflare is reporting an error, but it's being discarded.

 

[kinghat]

I came across this thread when I was looking for a Cloudflare DDNS script I could use for my set up. I didn't troubleshoot the OP's thread, but I did create a working DDNS script.

https://github.com/ulygit/asus_rt_ac68u

Please let me know if you find any errors or omissions.

i know there are a few scripts out there for cloudflare but this one is very nice. tyvm!

 

[vw-kombi]

I am trying to do this, but I have two questions if I may :
1 - Where do I find the zoneID ?
2 - I have a large number of subdomains, so many A records, so how do I do that ?
Thanks.

edit- found the zoneID - just Q2 now......

 

[vw-kombi]

OK - answered number 2 myself by modifying my domain DNS. Instead of all those A records, I changed them to cname's pointing to the one A records that has the IP address. Then only one to update. I guess this is the 'correct' way I should have done it in the first place - seeing as they all use the same IP address......

 

[szimat]

Hi,
i have a domain at CF, example.net and all the subdomains are CNAME, like test.example.net
What should I configure as A tpye in CF DNS?
And in the script?

 

[AppleBag]

Hi,
i have a domain at CF, example.net and all the subdomains are CNAME, like test.example.net
What should I configure as A tpye in CF DNS?
And in the script?

Mine looks like this:

;; A Records
my.home.domain.    120    IN    A    123.123.123.123 <--- my home IP

;; CNAME Records
bitwarden.home.domain IN    CNAME    my.home.domain.
ftp.home.domain    IN    CNAME    home.domain.
grafana.home.domain    IN    CNAME    my.home.domain.
plex.home.domain    IN    CNAME    my.home.domain.
prometheus.home.domain    IN    CNAME    my.home.domain.
resilio-sync.home.domain    IN    CNAME    my.home.domain.
sourcegraph.home.domain    IN    CNAME    my.home.domain.
syncthing.home.domain    IN    CNAME    my.home.domain.

My A record points to my home IP, with a subdomain name I use just for it, in this example "my" is the subdomain name. After that, any time I want to add any other subdomain name (I run docker containers that I point to with them) I just add a ncew cname that points to the "my" subdomain, which in turn uses my home IP. I also have a script that checks daily if my home IP changed, and if so, updates that A record for me automatically.

 

[szimat]

Mine looks like this:

;; A Records
my.home.domain.    120    IN    A    123.123.123.123 <--- my home IP

;; CNAME Records
bitwarden.home.domain IN    CNAME    my.home.domain.
ftp.home.domain    IN    CNAME    home.domain.
grafana.home.domain    IN    CNAME    my.home.domain.
plex.home.domain    IN    CNAME    my.home.domain.
prometheus.home.domain    IN    CNAME    my.home.domain.
resilio-sync.home.domain    IN    CNAME    my.home.domain.
sourcegraph.home.domain    IN    CNAME    my.home.domain.
syncthing.home.domain    IN    CNAME    my.home.domain.

My A record points to my home IP, with a subdomain name I use just for it, in this example "my" is the subdomain name. After that, any time I want to add any other subdomain name (I run docker containers that I point to with them) I just add a ncew cname that points to the "my" subdomain, which in turn uses my home IP. I also have a script that checks daily if my home IP changed, and if so, updates that A record for me automatically.

Thanks
But which script should I use on the router (Asus Merlin John's Fork) to update dns with CF directly? I saw many scripts and forks of them, which one should I use?