topic Re: Azure firewall crashes? in Cloud Firewall

Azure firewall crashes?

Ted_Serreyn — Wed, 02 Dec 2020 10:34:47 GMT

We have a R80.30 azure firewall with Jumbo hotfix 219.

Twice now in the early morning (around 3am) it has crashed and rebooted.

When it comes up, there is file system corruption due to the hard reboot.

This in turn caused default policy to be loaded rather than the correct one and the firewall appears down at this time.

So my question is how does one troubleshoot something like this? No firewall cores are created, nothing in the logs other then the subsequent booting up after the crash? Nothing on the serial console logs other than the reboot.

Is there any kind of crash diagnostics that we can force on the firewall, maybe a kernel crash diag to the serial console?

Any one else seeing this?

Re: Azure firewall crashes?

G_W_Albrecht — Wed, 02 Dec 2020 10:38:55 GMT

Open a ticket with TAC asap to find the cause of the issue !

Re: Azure firewall crashes?

Ted_Serreyn — Wed, 02 Dec 2020 10:40:25 GMT

Already had one before, and opened a new one.

Basic answer is we can't find anything in the logs.

So again my answer is how do we force a firewall to get more information.

Re: Azure firewall crashes?

Markus_Genser — Wed, 02 Dec 2020 15:11:18 GMT

Is the firewall under high load during that time?

I had the same issue when a large amount of https traffic hit the firewall in the F2F path and the cpu load rose up to 100%.

Prioity queue was eval. only at that time.

After limiting the banwidth for this specific traffic with application control and enabling priority queue the issue was gone.

This was R80.30 and jumbo take 175.

Re: Azure firewall crashes?

Ted_Serreyn — Wed, 02 Dec 2020 17:20:32 GMT

Nope actually lower than normal.

curious what the latest ongoing jumbo vpn crashes problem look like in real life.