[upgrade] Fetching available versions to upgrade to
[upgrade/versions] Cluster version: v1.10.0
[upgrade/versions] kubeadm version: v1.11.0
[upgrade/versions] WARNING: Couldn't fetch latest stable version from the internet: unable to get URL "https://dl.k8s.io/release/stable.txt": Get https://dl.k8s.io/release/stable.txt: dial tcp 35.201.71.162:443: i/o timeout
[upgrade/versions] WARNING: Falling back to current kubeadm version as latest stable version
[upgrade/versions] WARNING: Couldn't fetch latest version in the v1.10 series from the internet: unable to get URL "https://dl.k8s.io/release/stable-1.10.txt": Get https://dl.k8s.io/release/stable-1.10.txt: dial tcp 35.201.71.162:443: i/o timeout
Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
COMPONENT CURRENT AVAILABLE
Kubelet 3 x v1.10.0 v1.11.0
Upgrade to the latest stable version:
COMPONENT CURRENT AVAILABLE
API Server v1.10.0 v1.11.0
Controller Manager v1.10.0 v1.11.0
Scheduler v1.10.0 v1.11.0
Kube Proxy v1.10.0 v1.11.0
CoreDNS 1.1.3
Kube DNS 1.14.8
Etcd 3.1.12 3.2.18
You can now apply the upgrade by executing the following command: