ubuntu24.04 修改hostname与ip

NODE_ID=51
HOSTNAME=k3s-${NODE_ID}
echo "${HOSTNAME}" |  tee /etc/hostname
sed -i -E "s/(127.0.1.1) (.*+)$/\1 ${HOSTNAME}/g" /etc/hosts
sed -i -E "s/192\.168\.0\.[0-9]+\/24/192.168.0.${NODE_ID}\/24/g" /etc/netplan/50-cloud-init.yaml

 cat /etc/hostname
 cat /etc/hosts |grep 127
 cat /etc/netplan/50-cloud-init.yaml
reboot