[CentOS] Misterious hang

[Ljubomir Ljubojevic]

Vreme: 11/14/2011 05:09 PM, Fajar Priyanto piše:
> On Thu, Nov 10, 2011 at 5:03 PM, Fajar Priyanto<fajarpri at arinet.org>  wrote:
>> Hi all,
>> Recently one my Centos 5.7 VM just crashes at least once a day randomly (hang).
>>
>> In /var/log/messages there is nothing at all that there is problem (no
>> error, no failure). The log just stops.
>>
>> The only change I did before this crashes is I activated LDAP
>> authentication, and also auditd. But I don't see any evidence relating
>> to it.
>
> Hi all,
> I want to give update....
> Removing auditd didn't solve the problem. Still hang.
>
> So, finally I create a cronjob to echo date and time into a text file
> every 5 minutes to find out if there is a pattern on when the hang
> occurs and the result is ........
> It hasn't hang for more than 3 days...!
>
> Definitely there is still problem, but somehow that cronjob prevents
> the hang from occurring. Like as if the VM got idle, it will hang?
> I don't know...
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>

Do you have some sort of standby turned on by the guest?

Or maybe Host does not see any activity of the guest and tryies to 
suspend it?

-- 

Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

Google is the Mother, Google is the Father, and traceroute is your
trusty Spiderman...
StarOS, Mikrotik and CentOS/RHEL/Linux consultant