How simulate crashes on HA to validate?

Question

Hi Folks 
 I've noticed several similar issues with HA Sophos Firewall on some end customers. 
 We use Active-Passive HA. When primary firewall crashes for some unknown reason (I'll check more information to understand at community.sophos.com/.../finding-the-root-cause-of-crashes -sudden-reboots). 
 Anyway, when the primary freezes, the equipment remains "alive", but the Auxiliary does not take over, or else it notices the primary freezing and also overloads. 
 Whenever it happens, we need to restart both firewalls manually on site. 
 However, on days of "normal" operation, when we simulate a link drop, or physical connection of interfaces with the primary, the Auxiliary understands and assumes operation. 
 
 Is there a way to simulate freezing during test activity to evaluate problem behavior before opening a ticket with the Sophos team? Do you recommend any prior or additional tests to be carried out? 
 
 Consider that I've seen the problem occur in at least 5 different scenarios with difference SFOS. 
 
 Thank you! 
 Best Regards, Servbot >_

Erick Jan · Answer

Hi, 
 Thank you for reaching out to Sophos Community. 
 Upon experiencing the issue, can you still access the console(Putty) to collect logs? Connect a serial cable? I would recommend checking the logs in the event of an issue. 
 This would give us more information about the issue. 
 However, as you've stated, you already experienced these in multiple scenarios, for critical cases such as these. I recommend creating a case to have our support team thoroughly check this. 
 You may also check the KB below for reference. 
 
 Sophos Firewall: Appliance crashes, restarts, or is non-responsive