WIP(alpine): trying to find a container image that supports openrc

.github/workflows/ci.yml

@@ -42,8 +42,10 @@ jobs:
             prebuilt: 'true'
           - distro: geerlingguy/docker-fedora33-ansible:latest
             scenario: autodeploy
-          - distro: alpine:3.15
+          - distro: nimmis/alpine:3.14
             scenario: highavailabilityetcd
+            command: "init"
+            prebuilt: 'false'
           - distro: geerlingguy/docker-rockylinux8-ansible:latest
             scenario: highavailabilityetcd
             prebuilt: 'true'
@@ -70,3 +72,4 @@ jobs:
           ANSIBLE_FORCE_COLOR: '1'
           MOLECULE_DISTRO: ${{ matrix.distro }}
           MOLECULE_PREBUILT: ${{ matrix.prebuilt }}
+          MOLECULE_DOCKER_COMMAND: ${{ matrix.command }}

handlers/main.yml

@@ -6,7 +6,12 @@
     scope: "{{ k3s_systemd_context }}"
   become: "{{ k3s_become }}"
 
-- name: restart k3s
+- name: reload service
+  ansible.builtin.set_fact:
+    k3s_service_reloaded: true
+  become: "{{ k3s_become }}"
+
+- name: restart k3s systemd
   ansible.builtin.systemd:
     name: k3s
     state: restarted
@@ -19,3 +24,16 @@
     - k3s_systemd_restart_k3s is not success
     - not ansible_check_mode
   become: "{{ k3s_become }}"
+
+- name: restart k3s service
+  ansible.builtin.service:
+    name: k3s
+    state: restarted
+    enabled: "{{ k3s_start_on_boot }}"
+  retries: 3
+  delay: 3
+  register: k3s_service_restart_k3s
+  failed_when:
+    - k3s_service_restart_k3s is not success
+    - not ansible_check_mode
+  become: "{{ k3s_become }}"

molecule/autodeploy/molecule.yml

@@ -26,30 +26,30 @@ lint: |
   ansible-lint --exclude molecule/
 platforms:
   - name: node1
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node2
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node3
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
 provisioner:

molecule/debug/molecule.yml

@@ -26,30 +26,30 @@ lint: |
   ansible-lint --exclude molecule/
 platforms:
   - name: node1
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node2
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node3
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
 provisioner:

molecule/default/molecule.yml

@@ -26,30 +26,30 @@ lint: |
   ansible-lint --exclude molecule/
 platforms:
   - name: node1
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node2
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node3
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
 provisioner:

molecule/highavailabilitydb/molecule.yml

@@ -26,30 +26,30 @@ lint: |
   ansible-lint --exclude molecule/
 platforms:
   - name: node1
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node2
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node3
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: database

molecule/highavailabilityetcd/converge.yml

@@ -12,6 +12,7 @@
     k3s_agent:
       node-ip: "{{ ansible_default_ipv4.address }}"
       snapshotter: native
+    k3s_skip_validation: "{{ k3s_service_handler[ansible_service_mgr] == 'service' }}"
   pre_tasks:
     - name: Set each node to be a control node
       ansible.builtin.set_fact:

molecule/highavailabilityetcd/molecule.yml

@@ -26,30 +26,30 @@ lint: |
   ansible-lint --exclude molecule/
 platforms:
   - name: node1
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node2
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node3
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: loadbalancer

molecule/highavailabilityetcd/prepare.yml

@@ -1,12 +1,23 @@
 ---
-- name: Prepare Load Balancer
-  hosts: loadbalancer
+
+- name: Prepare all nodes
+  hosts: all
   tasks:
     - name: Ensure apt cache is updated
       ansible.builtin.apt:
         update_cache: true
       when: ansible_pkg_mgr == 'apt'
 
+    - name: Ensure sudo is installed
+      community.general.apk:
+        name: sudo
+        state: present
+        update_cache: true
+      when: ansible_pkg_mgr == 'apk'
+
+- name: Prepare Load Balancer
+  hosts: loadbalancer
+  tasks:
     - name: Ensure HAProxy is installed
       ansible.builtin.package:
         name: haproxy

molecule/nodeploy/molecule.yml

@@ -26,30 +26,30 @@ lint: |
   ansible-lint --exclude molecule/
 platforms:
   - name: node1
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node2
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
   - name: node3
-    image: "${MOLECULE_DISTRO:-ubuntu:focal}"
+    image: ${MOLECULE_DISTRO:-"geerlingguy/docker-rockylinux8-ansible:latest"}
     command: ${MOLECULE_DOCKER_COMMAND:-""}
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
     privileged: true
-    pre_build_image: ${MOLECULE_PREBUILT:-false}
+    pre_build_image: ${MOLECULE_PREBUILT:-true}
     networks:
       - name: k3snet
 provisioner:

tasks/ensure_cluster.yml

@@ -38,7 +38,7 @@
     mode: 0600
   become: "{{ k3s_become }}"
   notify:
-    - restart k3s
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
 
 - name: Ensure k3s service unit file is present
   ansible.builtin.template:
@@ -47,8 +47,8 @@
     mode: 0644
   become: "{{ k3s_become }}"
   notify:
-    - reload systemd
-    - restart k3s
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
 
 - name: Ensure k3s config file exists
   ansible.builtin.template:
@@ -56,8 +56,8 @@
     dest: "{{ k3s_config_file }}"
     mode: 0644
   notify:
-    - reload systemd
-    - restart k3s
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
   become: "{{ k3s_become }}"
 
 - name: Ensure secondary controllers are started

tasks/ensure_containerd_registries.yml

@@ -6,6 +6,6 @@
     dest: "{{ k3s_config_dir }}/registries.yaml"
     mode: 0600
   notify:
-    - reload systemd
-    - restart k3s
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
   become: "{{ k3s_become }}"

tasks/ensure_control_plane_started_systemd.yml

@@ -0,0 +1,16 @@
+---
+
+- name: Ensure k3s initial control plane server is started
+  ansible.builtin.systemd:
+    name: k3s
+    state: started
+    enabled: "{{ k3s_start_on_boot }}"
+    scope: "{{ k3s_systemd_context }}"
+  register: k3s_systemd_start_k3s
+  failed_when:
+    - k3s_systemd_start_k3s is not succeeded
+    - not ansible_check_mode
+  when: (k3s_control_node and k3s_controller_list | length == 1)
+        or (k3s_primary_control_node and k3s_controller_list | length > 1)
+        or k3s_token_cluster_check.stat.exists
+  become: "{{ k3s_become }}"

tasks/ensure_control_plane_started_sysvinit.yml

@@ -0,0 +1,15 @@
+---
+
+- name: Ensure k3s initial control plane server is started
+  ansible.builtin.service:
+    name: k3s
+    state: started
+    enabled: "{{ k3s_start_on_boot }}"
+  register: k3s_service_start_k3s
+  failed_when:
+    - k3s_service_start_k3s is not succeeded
+    - not ansible_check_mode
+  when: (k3s_control_node and k3s_controller_list | length == 1)
+        or (k3s_primary_control_node and k3s_controller_list | length > 1)
+        or k3s_token_cluster_check.stat.exists
+  become: "{{ k3s_become }}"

tasks/ensure_installed.yml

@@ -22,17 +22,4 @@
     path: "{{ k3s_token_location }}"
   register: k3s_token_cluster_check
 
-- name: Ensure k3s initial control plane server is started
-  ansible.builtin.systemd:
-    name: k3s
-    state: started
-    enabled: "{{ k3s_start_on_boot }}"
-    scope: "{{ k3s_systemd_context }}"
-  register: k3s_systemd_start_k3s
-  failed_when:
-    - k3s_systemd_start_k3s is not succeeded
-    - not ansible_check_mode
-  when: (k3s_control_node and k3s_controller_list | length == 1)
-        or (k3s_primary_control_node and k3s_controller_list | length > 1)
-        or k3s_token_cluster_check.stat.exists
-  become: "{{ k3s_become }}"
+- include_tasks: ensure_control_plane_started_{{ ansible_service_mgr }}.yml

tasks/ensure_installed_node.yml

@@ -14,7 +14,7 @@
     - ctr
   when: not ansible_check_mode
   notify:
-    - restart k3s
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
   become: "{{ k3s_become }}"
 
 - name: Ensure k3s config file exists
@@ -23,8 +23,8 @@
     dest: "{{ k3s_config_file }}"
     mode: 0644
   notify:
-    - reload systemd
-    - restart k3s
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
   become: "{{ k3s_become }}"
 
 - name: Ensure cluster token is present when pre-defined
@@ -51,9 +51,35 @@
     src: k3s.service.j2
     dest: "{{ k3s_systemd_unit_dir }}/k3s.service"
     mode: 0644
+  when:
+    - k3s_service_handler[ansible_service_mgr] == 'systemd'
   notify:
-    - reload systemd
-    - restart k3s
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
+  become: "{{ k3s_become }}"
+
+- name: Ensure k3s service file is present
+  ansible.builtin.template:
+    src: k3s.openrc.j2
+    dest: "{{ k3s_openrc_service_dir }}/k3s"
+    mode: 0744
+  when:
+    - k3s_service_handler[ansible_service_mgr] == 'service'
+  notify:
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
+  become: "{{ k3s_become }}"
+
+- name: Ensure k3s logrotate file is present
+  ansible.builtin.template:
+    src: k3s.logrotate.j2
+    dest: "{{ k3s_logrotate_dir }}/k3s"
+    mode: 0640
+  when:
+    - k3s_service_handler[ansible_service_mgr] == 'service'
+  notify:
+    - "reload {{ k3s_service_handler[ansible_service_mgr] }}"
+    - "restart k3s {{ k3s_service_handler[ansible_service_mgr] }}"
   become: "{{ k3s_become }}"
 
 - name: Ensure k3s killall script is present

tasks/pre_checks.yml

@@ -38,6 +38,39 @@
     - not k3s_skip_validation
     - not k3s_skip_env_checks
 
+- name: Check that the target init system is supported by this role
+  ansible.builtin.assert:
+    that:
+      - ansible_service_mgr in k3s_supported_init
+    fail_msg: >-
+      {{ ansible_service_mgr }} is not supported by this role.
+      Supported init systems: {{ k3s_supported_init | join(', ') }}
+    success_msg: "{{ ansible_service_mgr }} is supported"
+  when:
+    - not k3s_skip_validation
+    - not k3s_skip_env_checks
+
+- name: Determing if {{ ansible_service_mgr }} is actually openrc
+  ansible.builtin.stat:
+    path: /sbin/openrc-run
+  register: k3s_check_openrc_run
+  when:
+    - k3s_service_handler[ansible_service_mgr] == 'service'
+    - not k3s_skip_validation
+    - not k3s_skip_env_checks
+
+- name: Check that {{ ansible_service_mgr }} is actually openrc
+  ansible.builtin.assert:
+    that:
+      - k3s_check_openrc_run.stat.exists
+    fail_msg: >-
+      openrc was not found, cannot install to {{ ansible_service_mgr }}
+    success_msg: "openrc found"
+  when:
+    - k3s_service_handler[ansible_service_mgr] == 'service'
+    - not k3s_skip_validation
+    - not k3s_skip_env_checks
+
 - include_tasks: pre_checks_version.yml
   when:
     - (k3s_release_version is not defined

templates/k3s.logrotate.j2

@@ -0,0 +1,5 @@
+/var/log/k3s.log {
+	missingok
+	notifempty
+	copytruncate
+}

templates/k3s.openrc.j2

@@ -0,0 +1,47 @@
+#!/sbin/openrc-run
+
+depend() {
+    after network-online
+    want cgroups
+}
+
+start_pre() {
+    rm -f /tmp/k3s.*
+}
+
+supervisor=supervise-daemon
+name="k3s"
+command="{{ k3s_install_dir }}/k3s"
+command_args="{% filter regex_replace('\s+', ' ') %}
+{% filter replace('\n', ' ') %}
+{% if k3s_debug is defined and k3s_debug %}
+    --debug
+{% endif %}
+{% if k3s_control_node %}
+    server
+    {% if (k3s_etcd_datastore is defined and k3s_etcd_datastore) and (k3s_primary_control_node is not defined or not k3s_primary_control_node) and k3s_controller_list | length > 1 %}
+        --server https://{{ k3s_registration_address }}:{{ k3s_control_plane_port | default(6443) | string }}
+    {% endif %}
+    {% if k3s_server is defined %}
+        --config {{ k3s_config_file }}
+    {% endif %}
+    {% if k3s_control_node and not k3s_primary_control_node %}
+        --token-file {{ k3s_token_location }}
+    {% endif %}
+{% else %}
+    agent
+    --server https://{{ k3s_registration_address }}:{{ k3s_control_plane_port | default(6443) | string }}
+    --token-file {{ k3s_token_location }}
+    {% if k3s_agent is defined %}
+        --config {{ k3s_config_file }}
+    {% endif %}
+{% endif %} >>/var/log/k3s.log 2>&1"
+{% endfilter %}
+{% endfilter %}
+
+output_log="/var/log/k3s.log"
+error_log="/var/log/k3s.log"
+
+pidfile="/var/run/k3s.pid"
+respawn_delay=5
+respawn_max=0

vars/main.yml

@@ -15,6 +15,12 @@ k3s_valid_states:
   - uninstalled
   - validated
 
+# Supported init systems
+k3s_supported_init:
+  - systemd
+  - sysvinit  # Possibly what openrc identifies as in Ansible?
+  - openrc
+
 # Map ansible fact gathering architecture to a release name and suffix in github.
 k3s_arch_lookup:
   amd64:
@@ -84,6 +90,18 @@ k3s_systemd_context: system
 # management, this should live in /etc/systemd, not /lib/systemd
 k3s_systemd_unit_dir: "/etc/systemd/{{ k3s_systemd_context }}"
 
+# Directory for installing openrc service file
+k3s_openrc_service_dir: /etc/init.d
+
+# Directory for installing logrotate config
+k3s_logrotate_dir: /etc/logrotate.d
+
+# Service handler
+k3s_service_handler:
+  systemd: systemd
+  sysvinit: service
+  openrc: service
+
 # Data directory location for k3s
 k3s_data_dir: "{{ k3s_runtime_config['data-dir'] | default('/var/lib/rancher/k3s') }}"