Virtualization, Servers and Storage : How-to Troubleshoot Ubuntu Pro

Frequently Asked Questions (FAQ)

1. Invalid Token error when running command: sudo pro attach $(vmware-rpctool "info-get guestinfo.ut.vss.ubuntu_pro.token")

Solution:

Ensure the virtual machine is running on any of the clusters listed above.

vss-cli compute vm get {vm_id-or-name} domain

output:

MOREF               : domain-c5877
NAME                : FD3

Run the following command through the vss-cli to attach Ubuntu Pro to your virtual machine

vss-cli --wait compute vm set {vm_id-or-name} ubuntu-pro attach

output:

id                  : B399A
status              : SUBMITTED
task_id             : 29870123-XXXX-4a03-894a-f350481XXXXX
message             : Request has been accepted for processing
⏳ Waiting for request B399A to complete...
🎉 Request B399A completed successfully:
warnings            : Ubuntu Pro settings have been re-applied.
errors              :

Once you receive the confirmation that the Ubuntu Pro token is set up, proceed with updating packages on the desired virtual machine using the following commands:

sudo apt install ubuntu-advantage-pro ubuntu-advantage-tools
sudo pro attach $(vmware-rpctool "info-get guestinfo.ut.vss.ubuntu_pro.token")

2. Error: Failed to attach machine. See https://ubuntu.com/pro/dashboard" 

Solution:
Ensure you can connect to the contract url: https://vss-ubuntu-pro.eis.utoronto.ca

Try the following command:

curl https://vss-ubuntu-pro.eis.utoronto.ca

output:

404 page not found

If your output is different, this means that you have a firewall or proxy configuration that is not allowing you to connect to our Ubuntu Pro instance. Feel free to contact us to troubleshoot further this issue.

3. Error when refreshing or updating Ubuntu Pro:

Error connecting to /v1/contracts/cAK_rvDKBntn7BB0ruAJUHrk34967cvhR4KRVUB5CQ08/machine-activity/56b0f2f01cec4317bae42dfa96b5ec9f: 401 {"code":401,"message":"token parsing failed"}

Solution:

1. Before accessing the virtual machine, execute the following vss-cli command to activate Ubuntu Pro environment variables.

   vss-cli --wait compute vm set {vm_id-or-name} ubuntu-pro attach

2. Access the virtual machine via ssh and upgrade to sudo permissions.

   ssh <USER>@<IP_ADDRESS> [-p <PORT>]

3. Disable Livepatch

   canonical-livepatch disable

4. Detach Ubuntu Pro

   pro detach --assume-yes

5. As optional, install the latest version of Ubuntu Pro Client.

   apt install -y ubuntu-pro-client

6. Enable Ubuntu Livepatch

   canonical-livepatch enable $(vmware-rpctool "info-get guestinfo.ut.vss.ubuntu_pro.livepatch.token")

7. Enable and attach Ubuntu Pro

   pro attach $(vmware-rpctool "info-get guestinfo.ut.vss.ubuntu_pro.token")

References

https://ubuntu.com/security/livepatch/docs/livepatch/how-to/status