kubeadm 1.7.1 cannot start due to bug

[sandor-nemeth]

Kubeadm 1.7.1 is broken, when the init would run one'll get an error:

$ kubeadm init --config /etc/kubernetes/kubeadm.yml                                                                                                                 
[kubeadm] WARNING: kubeadm is in beta, please do not use it for production clusters.            
[init] Using Kubernetes version: v1.7.1         
[init] Using Authorization modes: [Node RBAC]   
[preflight] Running pre-flight checks           
can not mix '--config' with other arguments  

The solution is to downgrade to 1.7.0 with the following change in roles/kubernetes/tasks/apt.yml:

- name: Install Packages
  apt:
    name: "{{ item }}"
    force: yes
    state: present
  with_items:
    - kubelet=1.7.0-00
    - kubeadm=1.7.0-00
    - kubectl=1.7.0-00
    - kubernetes-cni

After this it works.

The corresponding kubernetes bug is: https://github.com/kubernetes/kubeadm/issues/345

This affects Kubernetes 1.7.1, should be resolved when that update hits the repos.

[robertpeteuil]

FYI - this kubeadm bug was fixed in v1.7.2 released on 19 July, 2017. So there should be no need to keep your install pinned to 1.7.0. anymore.

The current version, as of this posting, is 1.7.4