[rudder-users] Agent and No answer status

[Prestasit01]

Hi Vincent,

Thanks for the quick answer

I think i will wait for the 2.10 stable version. It seems to be a question of day ? :)

Cedric

De : rudder-users-bounces at lists.rudder-project.org [mailto:rudder-users-bounces at lists.rudder-project.org] De la part de Vincent Membré
Envoyé : jeudi 22 mai 2014 14:31
À : rudder-users at lists.rudder-project.org
Objet : Re: [rudder-users] Agent and No answer status

Hello Cédric,

Thanks for reporting your error!

Le 22/05/2014 12:44, Prestasit01 a écrit :
Hi all,

I found that some of my agents are now seen as « NEVER SEEN » in the root-server and all applicated rules on them are in status « No answer ».

It seems to be due to our mountpoint : tmpfs on /var/rudder/cfengine-community/state type tmpfs (rw,noexec,nosuid,noatime,nodiratime,size=128M,nr_inodes=2k,mode=0755)
NB : This was configured like this to reduce the i/o.

This « space » came full and the agent turn crazy.

I have a workaround, on nodes => killall -s 9 cf-agent , umount the point, remount it and restart the rudder agent

Have you got another solution ? is that still usefull to have this mountpoint ?


I think this might be linked to cf_lock.tcdb file size: https://www.rudder-project.org/redmine/issues/4769

This file grow bigger and bigger with time, impacting the performance of cf-agent.

When your tmpfs got full, cf-agent cannot run anymore.

This bug has less impact on CFEngine 3.4, so we only fixed it in 2.9 (using CFEngine 3.5).

To resolve your problem, you can wipe that file regularly using a Cron ( /etc/cron.d/clean-rudder-locks)

*/5 * * * * root if [ `ls -l /var/rudder/cfengine-community/state/cf_lock.tcdb | cut -f 5 -d " "` -gt "10485760" ]; then rm -rf /var/rudder/cfengine-community/state/cf_lock.tcdb*; fi

I suggest to share that to your nodes using a 'copy from shared folder' Directive, (or a 'cron management' / 'Job Scheduler' ).

Next releases (2.9.5 and 2.10.1, will contain the fix)




Thanks for the answer.

Cedric

Rudder-Root : 2.6.12
Rudder-Agent : 2.6.12


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