failed to add another master to my raspberry pi cluaster

[MosheAzraf]

hi,
im trying to add another master to my cluster that runs on raspberry pi os lite, but i get error:
"Job for k3s.service failed because the control process exited with error code.
See "systemctl status k3s.service" and "journalctl -xeu k3s.service" for details."

the script im trying to follow is:
curl -sfL https://get.k3s.io | K3S_URL=https://192.168.33.14:6443 K3S_TOKEN=K10caeafdff11dad7691d1806694fd82b13c73667ea8fe25e95e2a26a95af0de7c0::server:d3ed21c2fcd1ea570e9209a68039827c INSTALL_K3S_EXEC="server" sh -

and when i check the service status:

● k3s.service - Lightweight Kubernetes
     Loaded: loaded (/etc/systemd/system/k3s.service; enabled; preset: enabled)
     Active: activating (auto-restart) (Result: exit-code) since Mon 2024-05-06 21:32:57 IDT; 721ms ago
       Docs: https://k3s.io
    Process: 9924 ExecStartPre=/bin/sh -xc ! /usr/bin/systemctl is-enabled --quiet nm-cloud-setup.service 2>/dev/>
    Process: 9926 ExecStartPre=/sbin/modprobe br_netfilter (code=exited, status=0/SUCCESS)
    Process: 9927 ExecStartPre=/sbin/modprobe overlay (code=exited, status=0/SUCCESS)
    Process: 9928 ExecStart=/usr/local/bin/k3s server (code=exited, status=1/FAILURE)
   Main PID: 9928 (code=exited, status=1/FAILURE)
        CPU: 449ms

i also get the same error when i try to restart the service:

Job for k3s.service failed because the control process exited with error code.
See "systemctl status k3s.service" and "journalctl -xeu k3s.service" for details.

and when i run:

sudo journalctl -u k3s.service --no-pager

i get:

May 06 21:32:09 pim2 systemd[1]: k3s.service: Main process exited, code=exited, status=1/FAILURE
May 06 21:32:09 pim2 systemd[1]: k3s.service: Failed with result 'exit-code'.
May 06 21:32:09 pim2 systemd[1]: Failed to start k3s.service - Lightweight Kubernetes.
May 06 21:32:14 pim2 systemd[1]: k3s.service: Scheduled restart job, restart counter is at 17.
May 06 21:32:14 pim2 systemd[1]: Stopped k3s.service - Lightweight Kubernetes.
May 06 21:32:14 pim2 systemd[1]: Starting k3s.service - Lightweight Kubernetes...
May 06 21:32:14 pim2 sh[9647]: + /usr/bin/systemctl is-enabled --quiet nm-cloud-setup.service
May 06 21:32:14 pim2 k3s[9651]: time="2024-05-06T21:32:14+03:00" level=info msg="Starting k3s v1.29.4+k3s1 (94e29e2e)"
May 06 21:32:14 pim2 k3s[9651]: time="2024-05-06T21:32:14+03:00" level=info msg="Managed etcd cluster not yet initialized"
May 06 21:32:14 pim2 k3s[9651]: time="2024-05-06T21:32:14+03:00" level=fatal msg="starting kubernetes: preparing server: etcd disabled"

any idea what am i doing wrong here ?

this is my current cluster info:
i have a master + worker, and im trying to add another master..

NAME   STATUS   ROLES                  AGE    VERSION
pi1    Ready    <none>                 12d    v1.29.3+k3s1
pim1   Ready    control-plane,master   4d3h   v1.29.3+k3s1

[dereknola]

Your original cluster is utilizing the sqlite backend for K3s, which only allows 1 master (better known as server today) node.

If you want to have an HA cluster with multiple K3s servers, you will need to migrate to the embedded etcd backend, then add more server nodes. See https://docs.k3s.io/datastore/ha-embedded#existing-single-node-clusters.

Note: You must have an odd number of server nodes, you cannot have 2.

[MosheAzraf]

the token is the i got from :
/var/lib/rancher/k3s/server/node-token
?