Upgrade rancher to 1.6.26 and k8s to 1.12.5
Just saw that the latest stable rancher release is https://github.com/rancher/rancher/releases/tag/v1.6.26, which supports k8s 1.12.5 so we better use this one right ? The newer rancher releases are still alpha ones (v2.2.0-alpha*)
Yeah, rke 0.2.0 is now at rc 5, so I hope it will be released soon. Using 1.12.5 instead of 1.12.3 sounds good.