Persist Zerotier address on TrueNAS Scale

This guide is designed for configuring Zerotier on TrueNAS Core using Kubernetes.

1. In TrueNAS, navigate to System Settings and then select the Shell option.

2. In the opened shell window, execute the following command:

   1	k3s kubectl get namespaces

   The output should resemble the following:

   1 2 3 4 5 6 7 8

   NAME STATUS AGE default Active 2d11h kube-system Active 2d11h kube-public Active 2d11h kube-node-lease Active 2d11h openebs Active 2d11h ix-zerotier Active 2d11h ix-syncthing Active 2d11h

   Note the name of the Zerotier namespace; for example, it might be called ix-zerotier.

3. Run the following command using the namespace obtained:

   1	k3s kubectl get -n ix-zerotier pods

   The output should be similar to:

   1 2	NAME READY STATUS RESTARTS AGE zerotier-6d55584569-8psgm 1/1 Running 0 16m

4. With the namespace and pod name information, open a shell inside the pod using:

   1	k3s kubectl exec -n ix-zerotier --stdin --tty zerotier-6d55584569-8psgm -- /bin/bash

   Now inside the Zerotier Pod, you can utilize the Zerotier CLI tools.

5. Generate Zerotier identity files using the following command:

   1	zerotier-idtool generate identity.secret identity.public

   This creates two files, identity.secret and identity.public.

6. Retrieve the values from these files by running:

   1	cat identity.secret

   The output should appear as follows:

   1	481934b8ea:0:a00714fa214f59196aaa4836c8f3c5984f1b15ff186hc934ff0d5b8154f6910f2f5703560ce3364b9c898e9fe0808e4fbfb56025061085ee08551d091f65bdc2:24cebc7ecb1ea777ea055b29271e2bd82e6023849660cd7fb5d6b1c27f0a186e7c3592a38ab69d3e367ac4fee5e27d96e28f697177d13e46f1c3a6f34b14c00e

   Remove the root@truenas:/# from the end before pasting.

7. Repeat the same process for the other file:

   1	cat identity.public

   The output should be similar to:

   1	481934b8ea:0:ac0714fa214f59196aaa4836c8f5c5984f1b15ff1869c934ff0d5b8158f691032f5703560ce3364b9c898e9fe0808e4fbfb56025061085ee03554d091f65bdc2

   Remove the root@truenas:/# from the end before pasting.

8. Save these values in a text editor to prevent loss upon closing the shell.

9. From the TrueNAS web UI, go to Apps, choose Zerotier, and click Edit.

10. Paste the values into the identity secret and identity public inputs, then click Update.

Now, a new address will be generated, and it will persist even after rebooting the Zerotier application or TrueNAS.