Use a generated password for kube user (#1624)

Removed unnecessary root user

.gitignore

@@ -24,6 +24,7 @@ __pycache__/
 .Python
 env/
 build/
+credentials/
 develop-eggs/
 dist/
 downloads/

docs/getting-started.md

@@ -57,7 +57,7 @@ ansible-playbook -i my_inventory/inventory.cfg cluster.yml -b -v \
 See more details in the [ansible guide](ansible.md).
 
 Adding nodes
---------------------------
+------------
 
 You may want to add worker nodes to your existing cluster. This can be done by re-running the `cluster.yml` playbook, or you can target the bare minimum needed to get kubelet installed on the worker and talking to your masters. This is especially helpful when doing something like autoscaling your clusters.
 
@@ -66,4 +66,26 @@ You may want to add worker nodes to your existing cluster. This can be done by r
 ```
 ansible-playbook -i my_inventory/inventory.cfg scale.yml -b -v \
   --private-key=~/.ssh/private_key
-```
+```
+
+Connecting to Kubernetes
+------------------------
+By default, Kubespray configures kube-master hosts with insecure access to
+kube-apiserver via port 8080. A kubeconfig file is not necessary in this case,
+because kubectl will use http://localhost:8080 to connect. The kubeconfig files
+generated will point to localhost (on kube-masters) and kube-node hosts will
+connect either to a localhost nginx proxy or to a loadbalancer if configured.
+More details on this process is in the [HA guide](ha.md).
+
+Kubespray permits connecting to the cluster remotely on any IP of any 
+kube-master host on port 6443 by default. However, this requires 
+authentication. One could generate a kubeconfig based on one installed 
+kube-master hosts (needs improvement) or connect with a username and password.
+By default, two users are created: `kube` and `admin` with the same password.
+The password can be viewed after deployment by looking at the file 
+`PATH_TO_KUBESPRAY/credentials/kube_user`. This contains a randomly generated
+password. If you wish to set your own password, just precreate/modify this
+file yourself. 
+
+For more information on kubeconfig and accessing a Kubernetes cluster, refer to
+the Kubernetes [documentation](https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/).

inventory/group_vars/k8s-cluster.yml

@@ -40,18 +40,11 @@ kube_log_level: 2
 
 # Users to create for basic auth in Kubernetes API via HTTP
 # Optionally add groups for user
-kube_api_pwd: "changeme"
+kube_api_pwd: "{{ lookup('password', 'credentials/kube_user length=15') }}"
 kube_users:
   kube:
     pass: "{{kube_api_pwd}}"
     role: admin
-  root:
-    pass: "{{kube_api_pwd}}"
-    role: admin
-    # groups:
-    #   - system:masters
-
-
 
 ## It is possible to activate / deactivate selected authentication methods (basic auth, static token auth)
 #kube_oidc_auth: false

roles/kubespray-defaults/defaults/main.yaml

@@ -66,9 +66,6 @@ kube_users:
   kube:
     pass: "{{kube_api_pwd}}"
     role: admin
-  root:
-    pass: "{{kube_api_pwd}}"
-    role: admin
 
 # Choose network plugin (calico, weave or flannel)
 # Can also be set to 'cloud', which lets the cloud provider setup appropriate routing

tests/testcases/010_check-apiserver.yml

@@ -2,10 +2,12 @@
 - hosts: kube-master
 
   tasks:
+  - debug:
+      msg: "kube pass: {{ lookup('password', '../../credentials/kube_user length=15') }}"
   - name: Check the API servers are responding
     uri:
       url: "https://{{ access_ip | default(ansible_default_ipv4.address) }}:{{ kube_apiserver_port }}/api/v1"
       user: kube
-      password: changeme
+      password: "{{ lookup('password', '../../credentials/kube_user length=15') }}"
       validate_certs: no
       status_code: 200