UNetLab Common Issues

These are the common issues I encountered in setting up UNetLab and how I fixed these issues. I’m sharing this so UNetLab users will benefit from it. I will constantly update this list as I progress.

Issue 1: UNetLab is complaining about – Neither intel VT-X or AMD-V found.
Solution: Find the .vmx file for the UNetLab and add this line at the end.

vhv.enable = "TRUE".

Issue 2: After UNetLab install, running apt-get update and apt-get upgrade won’t update the UNetLab package.
Solution: I had to force update using these commands.

apt-get update
apt-get -o Dpkg::Options::="--force-overwrite" install unetlab unetlab-qemu

Issue 3: Image not showing on the UNetLab web interface.
Solution: Should follow folder naming convention.

Below is the reference node in UNetLab, file path is /opt/unetlab/html/includes/init.php.

                'a10'                   =>      'A10 vThunder',
                'clearpass'             =>      'Aruba ClearPass',
                'timos'                 =>      'Alcatel 7750 SR',
                'veos'                  =>      'Arista vEOS',
                'brocadevadx'   =>      'Brocade vADX',
                'cpsg'                  =>      'CheckPoint Security Gateway VE',
                'acs'                   =>      'Cisco ACS',
                'asa'                   =>      'Cisco ASA',
                'asav'                  =>      'Cisco ASAv',
                'cda'                   =>      'Cisco Context Directory Agent',
                'csr1000v'              =>      'Cisco CSR 1000V',
                'cips'                  =>      'Cisco IPS',
                'ise'                   =>      'Cisco ISE',
                'c1710'                 =>      'Cisco IOS 1710 (Dynamips)',
                'c3725'                 =>      'Cisco IOS 3725 (Dynamips)',
                'c7200'                 =>      'Cisco IOS 7206VXR (Dynamips)',
                'iol'                   =>      'Cisco IOL',
                'titanium'              =>      'Cisco NX-OSv (Titanium)',
                'sourcefire'    =>      'Cisco Sourcefire',
                'vios'                  =>      'Cisco vIOS',
                'viosl2'                =>      'Cisco vIOS L2',
                'vnam'                  =>      'Cisco vNAM',
                'vwlc'                  =>      'Cisco vWLC',
                //'vwaas'               =>      'Cisco vWAAS',
                'coeus'                 =>      'Cisco Web Security Appliance',
                'xrv'                   =>      'Cisco XRv',
                'nsvpx'                 =>      'Citrix Netscaler',
                'cumulus'               =>      'Cumulus VX',
                'extremexos'    =>      'ExtremeXOS',
                'bigip'                 =>      'F5 BIG-IP LTM VE',
                'fortinet'              =>      'Fortinet FortiGate',
                'hpvsr'                 =>      'HP VSR1000',
                'olive'                 =>      'Juniper Olive',
                'vmx'                   =>      'Juniper vMX',
                'vsrx'                  =>      'Juniper vSRX',
                'linux'                 =>      'Linux',
                'mikrotik'              =>      'MikroTik RouterOS',
                'ostinato'              =>      'Ostinato',
                'paloalto'              =>      'Palo Alto VM-100 Firewall',
                'vyos'                  =>      'VyOS',
                //'esxi'                =>      'VMware ESXi',
                'win'                   =>      'Windows'

For example, if you are adding a new ASAv image then the folder should start with asav.

Issue 4: How to add users in UNetLab.

Install sqlite.

apt-get update
apt-get install sqlite

Open the UNetLab sqlite database, file path is /opt/unetlab/data/database.sdb.

sqlite> .open database.sdb
sqlite> .databases
seq  name             file                                                      
---  ---------------  ----------------------------------------------------------
0    main             /opt/unetlab/data/database.sdb            
sqlite> .tables
pods   users
sqlite> INSERT INTO users (username, password) VALUES ("newadmin1","5bb73905f7fc00b2d5510785f625003a95d35f7d8ce423abf7ba3528be43ff2d");

Note that the password string is SHA256 hash. Search over the internet for SHA256 hash generator.

Issue 5: vIOS/ASAv and any other VMs will not start.
Solution: Make sure nested virtualisation is supported otherwise VMs wont start. Refer to solution for issue 1.

Issue 6: IOU/IOL device starts but after few seconds stops. From the wrapper logs, I received these errors.

1:1 ERR: Operation not permitted (5).
1:1 ERR: Operation not permitted (5).
1:1 ERR: Operation not permitted (5).
1:1 ERR: Operation not permitted (5).
1:1 ERR: No such file or directory (2).
1:1 ERR: Cannot open AF_UNIX sockets (2).
1:1 ERR: failed to create AF_UNIX socket file (2).
1:1 ERR: child is no more running.

Solution: Make sure /tmp directory has proper permissions. If not, apply the following commands.

chmod 777 /tmp
chmod g+t /tmp
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