Test playbook using molecule (#67)

* Test cluster using molecule

* Fix detection of first control node

* Include --flannel-iface and --node-ip as k3s arguments

* Store logs of k3s-init.service as GitHub job artifacts

roles/k3s/master/defaults/main.yml

@@ -2,10 +2,10 @@
 ansible_user: root
 server_init_args: >-
   {% if groups['master'] | length > 1 %}
-    {% if ansible_host == hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0]) %}
+    {% if ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname'] %}
       --cluster-init
     {% else %}
-      --server https://{{ hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0]) }}:6443
+      --server https://{{ hostvars[groups['master'][0]].k3s_node_ip }}:6443
     {% endif %}
     --token {{ k3s_token }}
   {% endif %}

roles/k3s/master/tasks/fetch_k3s_init_logs.yml

@@ -0,0 +1,28 @@
+---
+# Download logs of k3s-init.service from the nodes to localhost.
+# Note that log_destination must be set.
+
+- name: Fetch k3s-init.service logs
+  ansible.builtin.command:
+    cmd: journalctl --all --unit=k3s-init.service
+  changed_when: false
+  register: k3s_init_log
+
+- name: Create {{ log_destination }}
+  delegate_to: localhost
+  run_once: true
+  become: false
+  ansible.builtin.file:
+    path: "{{ log_destination }}"
+    state: directory
+    mode: "0755"
+
+- name: Store logs to {{ log_destination }}
+  delegate_to: localhost
+  become: false
+  ansible.builtin.template:
+    src: content.j2
+    dest: "{{ log_destination }}/k3s-init@{{ ansible_hostname }}.log"
+    mode: 0644
+  vars:
+    content: "{{ k3s_init_log.stdout }}"

roles/k3s/master/tasks/main.yml

@@ -20,7 +20,7 @@
     owner: root
     group: root
     mode: 0644
-  when: ansible_host == hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0])
+  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
 
 - name: Copy vip rbac manifest to first master
   template:
@@ -29,7 +29,7 @@
     owner: root
     group: root
     mode: 0644
-  when: ansible_host == hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0])
+  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
 
 - name: Copy vip manifest to first master
   template:
@@ -38,7 +38,7 @@
     owner: root
     group: root
     mode: 0644
-  when: ansible_host == hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0])
+  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
 
 # these will be copied and installed now, then tested later and apply config
 - name: Copy metallb namespace to first master
@@ -48,7 +48,7 @@
     owner: root
     group: root
     mode: 0644
-  when: ansible_host == hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0])
+  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
 
 - name: Copy metallb namespace to first master
   template:
@@ -57,7 +57,7 @@
     owner: root
     group: root
     mode: 0644
-  when: ansible_host == hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0])
+  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
 
 - name: Init cluster inside the transient k3s-init service
   command:
@@ -80,6 +80,12 @@
       delay: 10
       changed_when: false
   always:
+    - name: Save logs of k3s-init.service
+      include_tasks: fetch_k3s_init_logs.yml
+      when: log_destination
+      vars:
+        log_destination: >-
+          {{ lookup('ansible.builtin.env', 'ANSIBLE_K3S_LOG_DIR', default=False) }}
     - name: Kill the temporary service used for initialization
       systemd:
         name: k3s-init

roles/k3s/master/templates/content.j2

@@ -0,0 +1,5 @@
+{#
+    This is a really simple template that just outputs the
+    value of the "content" variable.
+#}
+{{ content }}