ich hab es gefunden : ja sehr schwer : cd /etc/apt/trusted.gpg.d/ sudo wget -q -O - https://apt.grafana.com/gpg.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/grafana.gpg >/dev/null echo "deb [signed-by=/etc/apt/trusted.gpg.d/grafana.gpg] https://apt.grafana.com stable main" | sudo ...