kubespray/tests/testcases/030_check-network.yml

---
- hosts: kube-master[0]
  vars:
    test_image_repo: busybox
    test_image_tag: latest

  tasks:
  - name: Force binaries directory for Container Linux by CoreOS
    set_fact:
      bin_dir: "/opt/bin"
    when: ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]

  - name: Force binaries directory for other hosts
    set_fact:
      bin_dir: "/usr/local/bin"
    when: not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]

  - name: Create test namespace
    shell: "{{ bin_dir }}/kubectl create namespace test"

  - name: Run a replica controller composed of 2 pods in test ns
    shell: "{{ bin_dir }}/kubectl run test --image={{ test_image_repo }}:{{ test_image_tag }} --namespace test --replicas=2 --command -- tail -f /dev/null"

  - name: Check that all pods are running and ready
    shell: "{{ bin_dir }}/kubectl get pods --namespace test --no-headers -o yaml"
    register: run_pods_log
    until:
    # Check that all pods are running
    - '(run_pods_log.stdout | from_yaml)["items"] | map(attribute = "status.phase") | unique | list == ["Running"]'
    # Check that all pods are ready
    - '(run_pods_log.stdout | from_yaml)["items"] | map(attribute = "status.containerStatuses") | map("map", attribute = "ready") | map("min") | min'
    retries: 18
    delay: 10
    failed_when: false
    no_log: true

  - name: Get pod names
    shell: "{{ bin_dir }}/kubectl get pods -n test -o json"
    register: pods
    no_log: true

  - debug:
      msg: "{{ pods.stdout.split('\n') }}"
    failed_when: not run_pods_log is success

  - name: Get hostnet pods
    command: "{{ bin_dir }}/kubectl get pods -n test -o
             jsonpath='{range .items[?(.spec.hostNetwork)]}{.metadata.name} {.status.podIP} {.status.containerStatuses} {end}'"
    register: hostnet_pods
    no_log: true

  - name: Get running pods
    command: "{{ bin_dir }}/kubectl get pods -n test -o
             jsonpath='{range .items[?(.status.phase==\"Running\")]}{.metadata.name} {.status.podIP} {.status.containerStatuses} {end}'"
    register: running_pods
    no_log: true

  - name: Check kubectl output
    shell: "{{ bin_dir }}/kubectl get pods --all-namespaces -owide"
    register: get_pods
    no_log: true

  - debug:
      msg: "{{ get_pods.stdout.split('\n') }}"

  - name: Set networking facts
    set_fact:
      kube_pods_subnet: 10.233.64.0/18
      pod_names: "{{ (pods.stdout | from_json)['items'] | map(attribute = 'metadata.name') | list }}"
      pod_ips: "{{ (pods.stdout | from_json)['items'] | selectattr('status.podIP', 'defined') | map(attribute = 'status.podIP') | list }}"
      pods_hostnet: |
        {% set list = hostnet_pods.stdout.split(" ") %}
        {{ list }}
      pods_running: |
        {% set list = running_pods.stdout.split(" ") %}
        {{ list }}

  - name: Check pods IP are in correct network
    assert:
      that: item | ipaddr(kube_pods_subnet)
    when:
    - not item in pods_hostnet
    - item in pods_running
    with_items: "{{ pod_ips }}"

  - name: Ping between pods is working
    shell: "{{ bin_dir }}/kubectl -n test exec {{ item[0] }} -- ping -c 4 {{ item[1] }}"
    when:
    - not item[0] in pods_hostnet
    - not item[1] in pods_hostnet
    with_nested:
    - "{{ pod_names }}"
    - "{{ pod_ips }}"

  - name: Ping between hostnet pods is working
    shell: "{{ bin_dir }}/kubectl -n test exec {{ item[0] }} -- ping -c 4 {{ item[1] }}"
    when:
    - item[0] in pods_hostnet
    - item[1] in pods_hostnet
    with_nested:
    - "{{ pod_names }}"
    - "{{ pod_ips }}"