Require ansible>=2.5 to use k8s resource

README.md

@@ -9,7 +9,13 @@ a Docker image) which contains utilities to manage your cluster.
 
 * You need to have ssh access (either as root, or as another user that can
   `sudo`) to the machines that will make up your cluster.
-* You need `ansible >= 2.4` installed on your workstation to run the bootstrap scripts.
+* You need `ansible >= 2.5` installed on your workstation to run the bootstrap
+  scripts. Install the requirements like this:
+
+    `pip3 install --user -r ansible/requirements.txt`
+
+  Hint: If you get a [segmentation fault](https://bitbucket.org/cffi/cffi/issues/272/segfault-while-installing-via-pip)
+  using above command, you can add `--no-use-wheel` to it.
 
 ## Bootstrapping a new cluster
 

ansible/group_vars/cluster/settings.yml.example

+# Use python3 on cluster nodes for ansible
+ansible_python_interpreter: "/usr/bin/env python3"
 # External ip address of the cluster.
 ip_address: "203.0.113.6"
 # Main domain name of the cluster services.

ansible/requirements.txt

+# ansible>=2.5 is needed for using the `helm` resource
+ansible>=2.5

test/requirements.txt

-ansible>=2.4
+ansible>=2.5
 behave-webdriver>=0.2.2
 psutil>=5.5.0
 pytest>=4.3.0