ISE PSN Reboot Questions

[Marc Poretti]

My CU (100K Base Licenses) has a number of PSNs (16) distributed between two geographically dispersed data centres.  They are front ending them with Loadbalancers. Since their upgrade to ISE 2.1 they have experienced some of their PSNs going into an inconsistent state which shows up as either a slow login for their users or being thrown into Internet only. A simple reboot of the PSN appears to correct everything.

The customer is asking the following questions:

• Should they be rebooting the PSN on a regular schedule?
  • Their thoughts were to do 1/3 of the PSN every month so each quarter each PSN would be rebooted at least once.
• Is there a best practice around rebooting PSN?
  • Or should I steer them towards restarting the service
• Are we seeing this in other accounts?
• Regardless if this is recommended or not… is there a way to automate the reboot of the PSN?

[Timothy Abbott · Accepted solution]

Marc,

This is not expected behavior.  I recommend the customer open up a TAC case so that the deployment can be examined to determine why a reboot is necessary.

Regards,

-Tim

[Marc Poretti]

Thanks Tim,

I anticipated your response. thanks for confirming.

On a side (but similar) note, are you aware of any way to automate the reboot of the PSN? Just wondering...

Thanks again Tim.

Regards,

Marc

[Timothy Abbott]

Marc,

The only thing I can think of is to write a script that would SSH to the PSN issue one or more of the following commands:

To reboot the entire server:

reload

yes

yes

To restart the application server:

application stop ise

application start ise

Regards,

-Tim

[Marc Poretti]

Perfect! Thanks Tim.