https://github.com/hashicorp/vault/blob/master/api/renewer.go#L209
origin - http://www.pipiscrew.com/2018/01/somehow-sometimes-this-happens/ somehow-sometimes-this-happens
https://github.com/hashicorp/vault/blob/master/api/renewer.go#L209
origin - http://www.pipiscrew.com/2018/01/somehow-sometimes-this-happens/ somehow-sometimes-this-happens