[Kea-users] dhcp_ddns: 74536 error messages per second

Marcin Siodelski marcin at isc.org
Mon Feb 29 08:38:13 UTC 2016


Hello Jørgen,

We have found that GCC 5 has a bug related to optimizations which may
cause DHCP DDNS module to fail. Please see:

- http://kea.isc.org/wiki/KeaKnownIssues
- http://kea.isc.org/ticket/4243
- http://kea.isc.org/ticket/4242

and the GCC and BOOST bugs we have opened for it:
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69789
- https://svn.boost.org/trac/boost/ticket/11989

May I suggest that you recompile Kea without code optimizations and see
how that works for you?

./configure ....... CXXFLAGS="-g -O0"

Marcin Siodelski
ISC

On 28.02.2016 21:30, J. Thomsen wrote:
> 
> dhcp_ddns never worked.
> 
> Always this (managed to stop it after 7 million lines of error messages !)
> 
> 2016-02-28 21:12:34.383 DEBUG [kea-dhcp-ddns.dhcpddns/4648] DCTL_RUN_PROCESS DhcpDdns
> starting application event loop
> 2016-02-28 21:12:34.383 INFO  [kea-dhcp-ddns.dhcpddns/4648] DHCP_DDNS_STARTED Kea
> DHCP-DDNS server version 1.0.0 started
> 2016-02-28 21:12:34.383 DEBUG [kea-dhcp-ddns.dhcpddns/4648]
> DHCP_DDNS_QUEUE_MGR_RECONFIGURING application is reconfiguring the queue manager
> 
> 2016-02-28 21:12:34.384 DEBUG [kea-dhcp-ddns.dhcpddns/4648] DHCP_DDNS_QUEUE_MGR_STARTED
> application's queue manager has begun listening for requests.
> 2016-02-28 21:12:34.384 ERROR [kea-dhcp-ddns.libdhcp-ddns/4648]
> DHCP_DDNS_NCR_UDP_RECV_ERROR UDP socket receive error while listening for DNS Update
> requests: Resource temporarily unavailable
> 2016-02-28 21:12:34.384 ERROR [kea-dhcp-ddns.dhcp-to-d2/4648]
> DHCP_DDNS_QUEUE_MGR_RECV_ERROR application's queue manager was notified of a request
> receive error by its listener.
> 2016-02-28 21:12:34.384 DEBUG [kea-dhcp-ddns.dhcpddns/4648] DHCP_DDNS_QUEUE_MGR_STOPPED
> application's queue manager has stopped listening for requests.
> 2016-02-28 21:12:34.384 INFO  [kea-dhcp-ddns.dhcpddns/4648] DHCP_DDNS_QUEUE_MGR_RECOVERING
> application is attempting to recover from a queue manager IO error
> 
> 2016-02-28 21:12:34.384 DEBUG [kea-dhcp-ddns.dhcpddns/4648] DHCP_DDNS_QUEUE_MGR_STARTED
> application's queue manager has begun listening for requests.
> 
> and so it goes on
> 
> Linux Fedora 22
> 
> Any idea of how to fix this ?
> 
> 
>  
> # DHCP DDNS configuration starts here.
> "DhcpDdns":
> {
>   "ip-address": "127.0.0.1",
>   "port": 53001,
>   "dns-server-timeout": 100,
>   "ncr-protocol": "UDP",
>   "ncr-format": "JSON",
>   "tsig-keys": [        {
> 	    "name": "xxxxxxxxxxx.sha512-tsig-key.",
> 	    "algorithm": "HMAC-SHA512",
> 	    "secret":
> "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
> 	}],
>   "forward-ddns" : {
>   	"ddns-domains": [
> 	    {
> 		"name": "slv.tld.",
> 		"key-name": "xxxxxxxxxxx.sha512-tsig-key.",
> 		"dns-servers": [
> 		    {
> 			"hostname": "",
> 			"ip-address": "10.1.2.3"
> 			"port": 53
> 		    }
> 		]
> 	    }
> 	]
> 
>   },
>   "reverse-ddns" : {
> 	"ddns-domains": [
> 	    {
> 		"name": "2.1.10.in-addr.arpa.",
> 		"key-name": "xxxxxxxxxxx.sha512-tsig-key.",
> 		"dns-servers": [
> 		    {
> 			"hostname": "",
> 			"ip-address": "10.1.2.3",
> 			"port": 53
> 		    }
> 		]
> 	    },
> 	    {
> 		"name": "c.f.2.x.x.x.x.x.x.x.x.x.x.x.x.x.ip6.arpa.",
> 		"key-name": "xxxxxxxxxxx.sha512-tsig-key.",
> 		"dns-servers": [
> 		{
> 			"hostname": "",
> 			"ip-address": "xxxx:xxxx:xxxx:2fc::2",
> 			"port": 53
> 		    }
> 		]
> 	    }
> 	]
>   }
> },
> 
> 
> - Jørgen Thomsen
> 
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