Change the --graffiti value on ExecStart line. Save your file.
sudo nano /etc/systemd/system/validator.service
Change the --graffiti value on ExecStart line. Save your file.
sudo nano /etc/systemd/system/beacon-chain.service
Change the validators-graffiti value. Save your file.
sudo nano /etc/teku/teku.yaml
Change the --graffiti value on ExecStart line. Save your file.
sudo nano /etc/systemd/system/validator.service
Change the --graffiti value on ExecStart line. Save your file.
sudo nano /etc/systemd/system/validator.service
Reload the updated unit file and restart the validator process for your graffiti to take effect.
sudo systemctl daemon-reload
sudo systemctl restart validator
sudo systemctl daemon-reload
sudo systemctl restart beacon-chain