I am not aware if these issues appear outside the virtual environment. I have only experienced these in GNS3, so thought might share my experience so that others can save time and frustration.
1-Login failure after bootup
Some of you may have experienced this annoying issue after powering on a Palo Alto firewall in a virtual environment, it does not accept the default username and password once the username prompt appears. It requires some patience and you have to wait for another minute or so before you can enter the default username admin and password admin to login.
In the below example I have pasted all the prompts which appear, wait till you see PA-VM and then enter the username and password.
vm login: admin
Password:
Login incorrect
login: hrtimer: interrupt took 26540101 ns
Login timed out after 60 seconds
PA-HDF login: admin
Password:
Login incorrect
login: Login timed out after 60 seconds
PA-VM login: admin
Password:
Number of failed attempts since last successful login: 0
Warning: Your device is still configured with the default admin account credentials. Please change your password prior to deployment.
admin@PA-VM>So please keep this small point in mind while setting up PANOS in virtual environments especially GNS3 and it is always recommended to change the default password.
2-Terminal display issue
Some may experience an issue related to the output displayed on the terminal e.g show configure running output may not display properly as the length of the output is short. To fix this problem we should increase the height and width of the terminal to properly display the output.
Apply these command in user mode. A value between <1-500> can be chosen.
admin@PA-VM> set cli terminal height 500
admin@PA-VM> set cli terminal width 500