OpenVZ Forum: Support » TUN causing instability.

Home » General » Support » TUN causing instability. (Enabling TUN on VPS causes high CPU loads (300.0+), live migrations causes kernel panic.)

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

TUN causing instability. [message #44330]

Wed, 30 November 2011 08:42

KuJoe
Messages: 11
Registered: November 2011

Junior Member

We recently migrated to new hardware nodes with the latest OpenVZ kernel and started to experience instability with TUN. At first, all live migrations with VPSs that have TUN enabled caused a kernel panic. Now when we enable TUN on a VPS and they run "tunctl -t tun0" they get the error ""enabling TUNSETPERSIST: Operation not permitted" and it causes the loads to spike over 300.0 which requires the node to be forcefully rebooted.

Is it really that easy to crash a whole OpenVZ node with a single command? Any ideas how to fix this?

Kernel: 2.6.18-274.7.1.el5.028stab095.1
vzctl version 3.0.29.3

Report message to a moderator

[Message index]

		TUN causing instability. By: KuJoe on Wed, 30 November 2011 08:42
		Re: TUN causing instability. By: KuJoe on Fri, 02 December 2011 05:48
		Re: TUN causing instability. By: KuJoe on Fri, 02 December 2011 06:56
		Re: TUN causing instability. By: Bryon on Sun, 15 January 2012 22:05
		Re: TUN causing instability. By: Bryon on Sun, 15 January 2012 22:08
		Re: TUN causing instability. By: KuJoe on Thu, 19 January 2012 04:10
		Re: TUN causing instability. By: Bryon on Thu, 19 January 2012 04:14
		Re: TUN causing instability. By: Bryon on Tue, 13 March 2012 17:29
		Re: TUN causing instability. By: KuJoe on Thu, 29 March 2012 04:28
		Re: TUN causing instability. By: KuJoe on Thu, 29 March 2012 04:48

Previous Topic:	Slow Container Network Speeds
Next Topic:	Abnormal memory centos EL6 64

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 25 17:59:15 GMT 2025

Total time taken to generate the page: 0.10349 seconds