[rudder-users] IO on vmware

Prestasit01 prestasit01 at ouest-france.fr
Wed Oct 2 17:48:15 CEST 2013


Hello,

Just for information rudder-agent has been updated from 2.4.3 to 2.4.8.

I don't know why but now I/O seems ok since i did that :


1.       delete one node which had big I/O (on the rudder server)

2.       remove the rudder-agent from my node

3.       delete /var/rudder & /opt/rudder

4.       install the rudder-agent (2.4.8)

5.       accept the node on the rudder server and re-affect the node to it last group.

I/O has been divided by 10.

I also have this message since i'm using RAM Disk :
UNTRUSTED: State directory /var/rudder/cfengine-community (mode 775) was not private!

Is that normal ?

BR


De : Prestasit01
Envoyé : mardi 1 octobre 2013 14:41
À : 'Matthieu CERDA'
Cc : 'Nicolas Charles'; rudder-users at lists.rudder-project.org
Objet : RE: [rudder-users] IO on vmware

I don't have theses informations,  here is the 3 first results of the iodump command :

while true; do sleep 1; dmesg -c; done | perl iodump
TASK                   PID      TOTAL       READ      WRITE      DIRTY DEVICES
cf-agent             30398      27817           0       27817          0 dm-0
cf-agent             29655      27817           0       27817          0 dm-0
cf-agent             29316       9643            0        9643             0 dm-0

BR

De : Matthieu CERDA [mailto:matthieu.cerda at normation.com]
Envoyé : mardi 1 octobre 2013 12:06
À : Prestasit01
Cc : 'Nicolas Charles'; rudder-users at lists.rudder-project.org<mailto:rudder-users at lists.rudder-project.org>
Objet : Re: [rudder-users] IO on vmware

Howdy,

Can you tell us which specific file/place/function is eating so much I/O ressources ?

Thanks in advance.

MC

Le 01/10/2013 11:30, Prestasit01 a écrit :
Hi,

It seems to work on some nodes. But, not for all.

On one impacted server, I used  iodump (http://www.geeek.org/post/linux-comment-trouver-les-processus-qui-consomment-de-l-io-992.html)
And it reveals that cf-agent is the biggest i/o eater on the server. (Ram disk mounted)

I hope there is one other solution.

BR

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