Centos 5.6 x86_64 does NOT reboot after kernel panic

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peyguin
Posts: 2
Joined: 2014/04/04 08:01:09

Centos 5.6 x86_64 does NOT reboot after kernel panic

Post by peyguin » 2014/04/04 08:17:16

I have a server with a Xeon(R) CPU E31220 @ 3.10GHz and 4Gb of RAM.
I'm using the cisco vpn client to initiate a VPN tunnel to another network.
Due to the buggy vpnclient (4.8.xx) I occasionaly get a kernel panic.
Since this machine is in a remote location I want to recover from the kernel panic.
I've setup sys.kernel.panic to 30.
I've also added it to grub.
I've enabled the nmi watchdog to 60 seconds to no avail.
The machine hangs at some point with a kernel panic and it NEVER reboots.
The Code is: Bad RIP Value
kernel panic - not synching: Fatal Exception

Ther is no way to update the server to a newer Centos version so this is not a solution.

Has anybody encountered such a situation?

Thanks.

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Super Jamie
Posts: 310
Joined: 2014/01/10 23:44:51

Re: Centos 5.6 x86_64 does NOT reboot after kernel panic

Post by Super Jamie » 2014/04/04 09:19:17

peyguin wrote:I've setup sys.kernel.panic to 30.
Can you show the exact configuration you have setup?

The correct parameter is kernel.panic = 30 in /etc/sysctl.conf

peyguin
Posts: 2
Joined: 2014/04/04 08:01:09

Re: Centos 5.6 x86_64 does NOT reboot after kernel panic

Post by peyguin » 2014/04/04 09:22:30

The configuration in sysctl.conf is as follows
kernel.panic = 30
kernel.panic_on_unrecovered_nmi = 60

And I've added the following to the kernel command line
nmi_watchdog=1 panic=30

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