[Kea-users] Kea LFC not executed anymore after some time (Kea 1.2.0)

[Marcin Siodelski]

On 18.11.2017 17:39, Mike wrote:
> On 11/17/2017 11:58 AM, Chaigneau, Nicolas wrote:
>>
>>
>>
>> So this is confirmed: LFC is really not executed anymore at some point, for a reason yet to be determined.
>>
>> I'll have a look at the changes between Kea 0.9.1 and 1.2.0.
>>
>>
>> If you think of anything that could help, I'm all ears :)
>>
> 
> 
> I'm not sure if this will help, but I have seen a similar (the same?)
> issue.   LFC has not worked for me in a very long time.  To the point
> that I wrote a script (below) to clean out the old leases, run by cron
> weekly.
> 
> The lfc config portions of kea.conf are:
> 
> 	"lease-database": {
> 		"type": "memfile",
> 		"persist": true,
> 		"name": "/var/db/kea/kea-leases4.csv",
> 		"lfc-interval": 4000
> 	},
> 
> and
> 
> 	"lease-database": {
> 		"type": "memfile",
> 		"persist": true,
> 		"name": "/var/db/kea/kea-leases6.csv",
> 		"lfc-interval": 4000
> 	},
> 
> Maybe I have some simple error in the config that my eyes keep
> overlooking, I don't know.
> 
> In any case, here's the script I run weekly:
> 
> 
> #!/bin/sh
> 
> set -e
> #set -xv
> 
> DBBaseDir=/var/db/kea
> 
> NowSecs=$(date +%s)
> 
> # IPv4 - expire is column 5
> # IPv6 - expire is column 4
> 
> keactrl stop
> 
> for IPFam in 4 6
> do
> 	MainFile=${DBBaseDir}/kea-leases${IPFam}.csv
> 	TmpFile=${DBBaseDir}/kea-leases${IPFam}.tmp
> 	OldFile=${DBBaseDir}/kea-leases${IPFam}.old
> 
> 	echo " "
> 	echo Processing ${MainFile}
> 
> 	test -e ${TmpFile} && rm ${TmpFile}
> 	while IFS="," read f1 f2 f3 f4 f5 f6
> 	do
> 		ExpireSecs=${NowSecs}
> 		test ${IPFam} = 4 && ExpireSecs=${f5}
> 		test ${IPFam} = 6 && ExpireSecs=${f4}
> 
> 		if [ ${f1}x = "addressx" -o  ${ExpireSecs} -gt ${NowSecs} ]
> 		then
> 			echo "${f1},${f2},${f3},${f4},${f5},${f6}" >> ${TmpFile}
> 		fi
> 
> 	done < ${MainFile}
> 
> 	cp -p ${MainFile} ${OldFile}
> 	cp -p ${TmpFile} ${MainFile}
> 	test -e ${TmpFile} && rm ${TmpFile}
> 
> 	echo "   record count (including header record)"
> 	wc -l ${OldFile}
> 	wc -l ${MainFile}
> done
> 
> echo " "
> ls -al ${DBBaseDir}
> 
> echo " "
> keactrl start
> 
> exit 0
> 

Mike,

Were you using "logrotate" when you saw the issue with kea not executing
LFC?

Thanks,
Marcin Siodelski
ISC