Do the modification using kubectl and you will have two ways:

• kubectl annotate:

    kubectl annotate node xx flannel.alpha.coreos.com/public-ip=new-value
  

• or kubectl patch :

    kubectl patch node xx -p '{"metadata":{"annotations":{"flannel.alpha.coreos.com/public-ip":"new-value"}}}'
  

Do the modification using kubectl and you will have two ways:

• kubectl annotate:

    kubectl annotate node xx --overwrite flannel.alpha.coreos.com/public-ip=new-value
  

• or kubectl patch :

    kubectl patch node xx -p '{"metadata":{"annotations":{"flannel.alpha.coreos.com/public-ip":"new-value"}}}'