I tried in a test kubernetes cluster (1.2.5) that one can easily overload the cluster by creating a conflicting pair of replication controller (first) and deployment (afterwards), e.g.:

apiVersion: v1
kind: ReplicationController
metadata:
  name: nginx2
spec:
  replicas: 3
  selector:
    app: nginx
  template:
    metadata:
      name: nginx
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

fighting against

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

So if several team members work on the same kubernetes cluster it can easily happen that one mistake brings down all services on the cluster.

What are tools or best practices to protect against such kind of operational errors?