[Kea-users] Monitoring a Kea cluster

[Marek Greško]

Hello,

I was observing similar issues. I currently workarounded it by setting:

            "service-sockets-require-all": false,
            "service-sockets-max-retries": 1000,
            "service-sockets-retry-wait-time": 10000

I am not sure the workaround is good enough, but I did not observe such problems since setting these parameters. Hope it will fix it forever. Without the first line kea exited when interfaces were not up, if I remember well, and the other two lines keeps retrying to listen the interfaces which will come up later. Without them kea ceases listening on those interfaces not being up at the moment.

I also do not understand why such tweaking is needed. If I configure kea to listen on an interface I expect it to respond on it any time it comes up. Very weird software.

Marek





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------- Original Message -------
On Tuesday, January 3rd, 2023 at 9:20, Stefan G. Weichinger <lists at xunil.at> wrote:


> Am 27.12.22 um 12:46 schrieb Darren Ankney:
> 
> > In any case, I’d be concerned why it was running but not answering
> > requests more-so than I would be about how to monitor it using actual
> > DHCP. I vaguely remember having some trouble with Kea and systemd
> > startup ordering (ie: it started up before the server’s IP was on the
> > interface). Setting After=network.target took care of it.
> 
> 
> We saw the behavior again yesterday: no DHCP leases after a reboot until
> we restarted kea.
> 
> In the service file there are these lines:
> 
> Wants=network-online.target
> After=network-online.target
> After=time-sync.target
> 
> https://systemd.io/NETWORK_ONLINE/ gives some information about these
> targets ... "network-online.target" should fit better .. but doesn't
> seem to be enough.
> 
> We use raw sockets for kea, but the server listens on multiple
> vlan-interfaces:
> 
> {
> "Dhcp4": {
> "interfaces-config": {
> "interfaces": [ "enp0s31f6", "enp0s31f6.101",
> "enp0s31f6.102", "enp0s31f6.103", "enp0s31f6.200" ],
> "dhcp-socket-type": "raw"
> },
> 
> 
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