[Kea-users] DDNS Error

[Wlodek Wencel]

Hey,

I believe you had to many brackets at start and missing coma before loggers:

{
  "DhcpDdns": {
    "forward-ddns": {
      "ddns-domains": [
        {
          "dns-servers": [
            {
              "hostname": "",
              "ip-address": "192.168.40.10",
              "port": 53
            }
          ],
          "key-name": "homelocal.key",
          "name": "home.local."
        }
      ]
    },
    "loggers": [
      {
        "debuglevel": 99,
        "name": "kea-dhcp-ddns",
        "output_options": [
          {
            "output": "/var/log/kea-ddns.log"
          }
        ],
        "severity": "DEBUG"
      }
    ],
    "tsig-keys": [
      {
        "algorithm": "HMAC-SHA256",
        "name": "homelocal.key",
        "secret": "jo/1eHCej8eFTY2aqvICCNINVvbbv9KuEU="
      }
    ]
  }
}

Tools like web json validators can be very helpful to find those kind of
issues.

Regards

Wlodek Wencel

QA, ISC

On 10/06/2020 05:35, Peter Fraser wrote:
>
> Thanks so much for both replies. I made the changes you mentioned. I
> found I also had to change the ip-addess to the ip address of the
> server. When I had it as 127.0.0.1, I was getting a corrupt reply
> error from the DNS Server in the logs. Thankfully now, the server is
> updating. I have just one last error now that I am trying to figure
> out. This is in the kea-dhcp-ddns.conf file. I keep getting the error :
>
>  
>
> *INFO/keactrl: Starting /usr/local/sbin/kea-dhcp-ddns -c
> /usr/local/etc/kea/kea-dhcp-ddns.conf*
>
> *2020-06-09 23:13:15.700 FATAL [kea-dhcp-ddns.dctl/72504]
> DCTL_CONFIG_FILE_LOAD_FAIL DhcpDdns reason: Configuration parsing
> failed: /usr/local/etc/kea/kea-dhcp-ddns.conf:28.3-11: syntax error,
> unexpected loggers, expecting "," or }*
>
>  
>
> I get this when I enable the logging section in the file. I am not
> sure why. I pretty much used the defaults from the sample file. I even
> compared my file with the sample file and everything there is the same
> except that I enabled debugging in mine.
>
>  
>
> Please note my entire kea-dhcp-ddns.conf below. I have been going
> through but I can’t seem to find a syntax error.
>
>  
>
> {
>
> {
>
> "DhcpDdns": {
>
>  
>
>   "tsig-keys": [
>
>           {
>
>             "name": "homelocal.key",
>
>             "algorithm": "HMAC-SHA256",
>
>             "secret": "jo/1eHCej8eFTY2aqvICCNINVvbbv9KuEU="
>
>           }
>
>                ],
>
>  
>
>   "forward-ddns": {
>
>                        "ddns-domains": [
>
>                        {
>
>                         "name": "home.local.",
>
>                         "key-name": "homelocal.key",
>
>                         "dns-servers": [
>
>                            {
>
>                             "hostname": "",
>
>                             "ip-address": "192.168.40.10",
>
>                             "port": 53
>
>                            }
>
>                         ]
>
>                        }
>
>                        ]
>
>                    }
>
>  
>
>    "loggers": [
>
>     {
>
>         "name": "kea-dhcp-ddns",
>
>         "output_options": [
>
>             {
>
>                 "output": "/var/log/kea-ddns.log"
>
>  
>
>             }
>
>         ],
>
>         "severity": "DEBUG",
>
>      // If DEBUG level is specified, this value is used. 0 is least
> verbose,
>
>         // 99 is most verbose. Be cautious, Kea can generate lots and lots
>
>         // of logs if told to do so.
>
>         "debuglevel": 99
>
>     }
>
>   ]
>
> }
>
> }
>
>  
>
>  
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
>  
>
> *From: *Joshua Schaeffer <mailto:jschaeffer at harmonywave.com>
> *Sent: *Tuesday, June 9, 2020 1:06 PM
> *To: *kea-users at lists.isc.org <mailto:kea-users at lists.isc.org>
> *Subject: *Re: [Kea-users] DDNS Error
>
>  
>
>  
>
> On 6/9/20 11:28 AM, Stephen Morris wrote:
>
>     2. In the "forward-ddns" section of the kea-dhcp-ddns.conf
>     configuration
>
>     file, "key-name" is set to blank, so no key is being used to communicate
>
>     with the BIND server.  However, in the BIND configuration, the
>
>     "allow-update" clause means that BIND requires a key in order to update
>
>     the "home.local" zone.
>
>      
>
>     3. The name of the only defined key in the kea-dhcp-ddns configuration
>
>     is "homelocal.key." (i.e. with a trailing period), but the name of the
>
>     key in BIND is "homelocal.key" (without the trailing period).  Assuming
>
>     the defined key is the one that should be used to communicate with BIND,
>
>     the names should match.
>
> I'd agree with Stephen that you need to make sure your key-name is
> specified in the forward-ddns section and that it matches the key name
> that BIND is configured to use. In addition to this you are getting an
> RCODE response, which means that you are getting an error from the DNS
> server. As you have DNS logs set to debug you should look through
> those logs to see if the DNS server will give you more information
> about the specifics of the error.
>
> -- 
> Thanks,
> Joshua Schaeffer
>
>  
>
>
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