[Kea-users] DDNS remains off - DDNS: disabled

[M.]

right, the connectivity parameters were missing.


"dhcp-ddns": {
"enable-updates": true
},

was sufficient in this case - everything else was left on default.

Thanks.



On 17/05/2021 11.49, Peter Davies wrote:
> Hi There,
>    To get ddns working you need to do three things:
> 1 Configure Connectivity Parameters
> 2 Configure Behavioral Parameters
> see 8.2.18 DDNS for DHCPv4 
> https://kea.readthedocs.io/en/kea-1.8.2/arm/dhcp4-srv.html#ddns-for-dhcpv4
> 3. Configure the kea-dhcp-ddns, daemon
> see 
> https://kea.readthedocs.io/en/kea-1.8.2/arm/ddns.html#the-dhcp-ddns-server 
> <https://kea.readthedocs.io/en/kea-1.8.2/arm/ddns.html#the-dhcp-ddns-server>
>
> Looking at your config snippet you have no connectivity parameters?
> The Kea ARM contains the following example:
> "Dhcp4": {
> "dhcp-ddns": {
> // Connectivity parameters
> "enable-updates": false,
> "server-ip": "127.0.0.1",
> "server-port":53001,
> "sender-ip":"",
> "sender-port":0,
> "max-queue-size":1024,
> "ncr-protocol":"UDP",
> "ncr-format":"JSON"
> },
> // Behavioral parameters (global)
> "ddns-send-updates": true,
> "ddns-override-no-update": false,
> "ddns-override-client-update": false,
> "ddns-replace-client-name": "never",
> "ddns-generated-prefix": "myhost",
> "ddns-qualifying-suffix": "",
> "ddns-update-on-renew": false,
> "ddns-use-conflict-resolution": true,
> "hostname-char-set": "",
> "hostname-char-replacement": ""
> ...
> }
>
>
> Kind Regards Peter
>
>
> Sent from Outlook <http://aka.ms/weboutlook>
> ------------------------------------------------------------------------
> *From:* Kea-users <kea-users-bounces at lists.isc.org> on behalf of M. 
> <byteshifter at shifted-bytes.de>
> *Sent:* 16 May 2021 13:10
> *To:* Kea-users at lists.isc.org <Kea-users at lists.isc.org>
> *Subject:* [Kea-users] DDNS remains off - DDNS: disabled
> Hi there!
>
>
> do I need something else to enable DDNS? The log shows "DDNS: disabled".
> "ddns-send-updates" have to be used -
> https://readthedocs.org/projects/kea/downloads/pdf/latest/ 
> <https://readthedocs.org/projects/kea/downloads/pdf/latest/> table 8 p.
> 138 lists "ddns-send-update" (without "s") - using the version w/o "s"
> results in complaints in the log. Is this a feature?
>
>
> ----------------------------
>
> kea-dhcp4.conf:
>
> {
>
>      "Dhcp4": {
>
>          "interfaces-config": {
>              "interfaces": [ "enp1s0" ],
>              "dhcp-socket-type": "raw"
>          },
>
>          "control-socket": {
>              "socket-type": "unix",
>              "socket-name": "/tmp/kea-dhcp4-ctrl.sock"
>          },
>
>          "lease-database": {
>              "lfc-interval": 3600,
>              "name": "/var/lib/kea/kea-leases4.csv",
>              "persist": true,
>              "type": "memfile"
>          },
>
>          "ddns-send-updates": true,
>          "ddns-override-no-update": true,
>          "ddns-override-client-update": true,
>          "hostname-char-set": "[^A-Za-z0-9-]",
>          "hostname-char-replacement": "x",
> ...
>
> ----------------------------
>
> 2021-05-16 12:34:54.783 INFO [kea-dhcp4.commands/3730.140310172542400]
> COMMAND_ACCEPTOR_START Starting to accept connections via unix domain
> socket bound to /tmp/kea-dhcp4-ctrl.sock
> 2021-05-16 12:34:54.783 INFO [kea-dhcp4.dhcp4/3730.140310172542400]
> DHCP4_CONFIG_COMPLETE DHCPv4 server has completed configuration: added
> IPv4 subnets: 4; DDNS: disabled
> 2021-05-16 12:34:54.784 INFO [kea-dhcp4.dhcpsrv/3730.140310172542400]
> DHCPSRV_MEMFILE_DB opening memory file lease database: lfc-interval=3600
> name=/var/lib/kea/kea-leases4.csv persist=true type=memfile universe=4
> 2021-05-16 12:34:54.784 INFO [kea-dhcp4.dhcpsrv/3730.140310172542400]
> DHCPSRV_MEMFILE_LEASE_FILE_LOAD loading leases from file
> /var/lib/kea/kea-leases4.csv
> 2021-05-16 12:34:54.785 INFO [kea-dhcp4.dhcpsrv/3730.140310172542400]
> DHCPSRV_MEMFILE_LFC_SETUP setting up the Lease File Cleanup interval to
> 3600 sec
> 2021-05-16 12:34:54.786 WARN [kea-dhcp4.dhcp4/3730.140310172542400]
> DHCP4_MULTI_THREADING_INFO enabled: no, number of threads: 0, queue 
> size: 0
> 2021-05-16 12:34:54.787 INFO [kea-dhcp4.dhcp4/3730.140310172542400]
> DHCP4_STARTED Kea DHCPv4 server version 1.9.4 started
>
>
>
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