feat(k3s): Updated to v1.27.4+k3s1

Co-authored-by: Techno Tim <timothystewart6@gmail.com>

.github/workflows/lint.yml

@@ -7,7 +7,7 @@ jobs:
     name: Pre-Commit
     runs-on: ubuntu-latest
     env:
-      PYTHON_VERSION: "3.10"
+      PYTHON_VERSION: "3.11"
 
     steps:
       - name: Check out the codebase

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
           - single_node
       fail-fast: false
     env:
-      PYTHON_VERSION: "3.10"
+      PYTHON_VERSION: "3.11"
 
     steps:
       - name: Check out the codebase
@@ -71,6 +71,7 @@ jobs:
 
       - name: Test with molecule
         run: molecule test --scenario-name ${{ matrix.scenario }}
+        timeout-minutes: 90
         env:
           ANSIBLE_K3S_LOG_DIR: ${{ runner.temp }}/logs/k3s-ansible/${{ matrix.scenario }}
           ANSIBLE_SSH_RETRIES: 4

.gitignore

@@ -1,2 +1,3 @@
 .env/
 *.log
+ansible.cfg

.pre-commit-config.yaml

@@ -1,7 +1,7 @@
 ---
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: 3298ddab3c13dd77d6ce1fc0baf97691430d84b0  # v4.3.0
+    rev: f71fa2c1f9cf5cb705f73dffe4b21f7c61470ba9  # frozen: v4.4.0
     hooks:
       - id: requirements-txt-fixer
       - id: sort-simple-yaml
@@ -12,24 +12,24 @@ repos:
       - id: trailing-whitespace
         args: [--markdown-linebreak-ext=md]
   - repo: https://github.com/adrienverge/yamllint.git
-    rev: 9cce2940414e9560ae4c8518ddaee2ac1863a4d2  # v1.28.0
+    rev: b05e028c5881819161d11cb543fd96a30c06cceb  # frozen: v1.32.0
     hooks:
       - id: yamllint
         args: [-c=.yamllint]
   - repo: https://github.com/ansible-community/ansible-lint.git
-    rev: a058554b9bcf88f12ad09ab9fb93b267a214368f  # v6.8.6
+    rev: 3293b64b939c0de16ef8cb81dd49255e475bf89a  # frozen: v6.17.2
     hooks:
       - id: ansible-lint
   - repo: https://github.com/shellcheck-py/shellcheck-py
-    rev: 4c7c3dd7161ef39e984cb295e93a968236dc8e8a  # v0.8.0.4
+    rev: 375289a39f5708101b1f916eb729e8d6da96993f  # frozen: v0.9.0.5
     hooks:
       - id: shellcheck
   - repo: https://github.com/Lucas-C/pre-commit-hooks
-    rev: 04618e68aa2380828a36a23ff5f65a06ae8f59b9  # v1.3.1
+    rev: 12885e376b93dc4536ad68d156065601e4433665  # frozen: v1.5.1
     hooks:
       - id: remove-crlf
       - id: remove-tabs
   - repo: https://github.com/sirosen/texthooks
-    rev: 30d9af95631de0d7cff4e282bde9160d38bb0359  # 0.4.0
+    rev: c4ffd3e31669dd4fa4d31a23436cc13839730084  # frozen: 0.5.0
     hooks:
       - id: fix-smartquotes

README.md

@@ -8,7 +8,7 @@ This is based on the work from [this fork](https://github.com/212850a/k3s-ansibl
 
 If you want more context on how this works, see:
 
-📄 [Documentation](https://docs.technotim.live/posts/k3s-etcd-ansible/) (including example commands)
+📄 [Documentation](https://technotim.live/posts/k3s-etcd-ansible/) (including example commands)
 
 📺 [Watch the Video](https://www.youtube.com/watch?v=CbkEWcUZ7zM)
 
@@ -28,7 +28,7 @@ on processor architecture:
 
 ## ✅ System requirements
 
-- Deployment environment must have Ansible 2.4.0+.  If you need a quick primer on Ansible [you can check out my docs and setting up Ansible](https://docs.technotim.live/posts/ansible-automation/).
+- Control Node (the machine you are running `ansible` commands) must have Ansible 2.11+ If you need a quick primer on Ansible [you can check out my docs and setting up Ansible](https://technotim.live/posts/ansible-automation/).
 
 - You will also need to install collections that this playbook uses by running `ansible-galaxy collection install -r ./collections/requirements.yml` (important❗)
 
@@ -67,6 +67,8 @@ node
 
 If multiple hosts are in the master group, the playbook will automatically set up k3s in [HA mode with etcd](https://rancher.com/docs/k3s/latest/en/installation/ha-embedded/).
 
+Finally, copy `ansible.example.cfg` to `ansible.cfg` and adapt the inventory path to match the files that you just created.
+
 This requires at least k3s version `1.19.1` however the version is configurable by using the `k3s_version` variable.
 
 If needed, you can also edit `inventory/my-cluster/group_vars/all.yml` to match your environment.
@@ -99,7 +101,7 @@ scp debian@master_ip:~/.kube/config ~/.kube/config
 
 ### 🔨 Testing your cluster
 
-See the commands [here](https://docs.technotim.live/posts/k3s-etcd-ansible/#testing-your-cluster).
+See the commands [here](https://technotim.live/posts/k3s-etcd-ansible/#testing-your-cluster).
 
 ### Troubleshooting
 

ansible.cfg

@@ -1,23 +0,0 @@
-[defaults]
-nocows                  = True
-roles_path              = ./roles
-inventory               = ./hosts.ini
-stdout_callback         = yaml
-
-remote_tmp              = $HOME/.ansible/tmp
-local_tmp               = $HOME/.ansible/tmp
-timeout                 = 60
-host_key_checking       = False
-deprecation_warnings    = False
-callbacks_enabled       = profile_tasks
-log_path                = ./ansible.log
-
-[privilege_escalation]
-become                  = True
-
-[ssh_connection]
-scp_if_ssh              = smart
-retries                 = 3
-ssh_args                = -o ControlMaster=auto -o ControlPersist=30m -o Compression=yes -o ServerAliveInterval=15s
-pipelining              = True
-control_path            = %(directory)s/%%h-%%r

ansible.example.cfg

@@ -0,0 +1,2 @@
+[defaults]
+inventory = inventory/my-cluster/hosts.ini  ; Adapt this to the path to your inventory file

deploy.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 
-ansible-playbook site.yml -i inventory/my-cluster/hosts.ini
+ansible-playbook site.yml

inventory/sample/group_vars/all.yml

@@ -1,5 +1,5 @@
 ---
-k3s_version: v1.24.9+k3s1
+k3s_version: v1.27.4+k3s1
 # this is the user that has ssh access to these machines
 ansible_user: ansibleuser
 systemd_dir: /etc/systemd/system
@@ -41,11 +41,43 @@ extra_agent_args: >-
   {{ extra_args }}
 
 # image tag for kube-vip
-kube_vip_tag_version: "v0.5.7"
+kube_vip_tag_version: "v0.5.12"
+
+# metallb type frr or native
+metal_lb_type: "native"
+
+# metallb mode layer2 or bgp
+metal_lb_mode: "layer2"
+
+# bgp options
+# metal_lb_bgp_my_asn: "64513"
+# metal_lb_bgp_peer_asn: "64512"
+# metal_lb_bgp_peer_address: "192.168.30.1"
 
 # image tag for metal lb
-metal_lb_speaker_tag_version: "v0.13.7"
-metal_lb_controller_tag_version: "v0.13.7"
+metal_lb_speaker_tag_version: "v0.13.9"
+metal_lb_controller_tag_version: "v0.13.9"
 
 # metallb ip range for load balancer
 metal_lb_ip_range: "192.168.30.80-192.168.30.90"
+
+# Only enable if your nodes are proxmox LXC nodes, make sure to configure your proxmox nodes
+# in your hosts.ini file.
+# Please read https://gist.github.com/triangletodd/02f595cd4c0dc9aac5f7763ca2264185 before using this.
+# Most notably, your containers must be privileged, and must not have nesting set to true.
+# Please note this script disables most of the security of lxc containers, with the trade off being that lxc
+# containers are significantly more resource efficent compared to full VMs.
+# Mixing and matching VMs and lxc containers is not supported, ymmv if you want to do this.
+# I would only really recommend using this if you have partiularly low powered proxmox nodes where the overhead of
+# VMs would use a significant portion of your available resources.
+proxmox_lxc_configure: false
+# the user that you would use to ssh into the host, for example if you run ssh some-user@my-proxmox-host,
+# set this value to some-user
+proxmox_lxc_ssh_user: root
+# the unique proxmox ids for all of the containers in the cluster, both worker and master nodes
+proxmox_lxc_ct_ids:
+  - 200
+  - 201
+  - 202
+  - 203
+  - 204

inventory/sample/group_vars/proxmox.yml

@@ -0,0 +1,2 @@
+---
+ansible_user: '{{ proxmox_lxc_ssh_user }}'

inventory/sample/hosts.ini

@@ -7,6 +7,11 @@
 192.168.30.41
 192.168.30.42
 
+# only required if proxmox_lxc_configure: true
+# must contain all proxmox instances that have a master or worker node
+# [proxmox]
+# 192.168.30.43
+
 [k3s_cluster:children]
 master
 node

molecule/default/overrides.yml

@@ -4,7 +4,8 @@
   tasks:
     - name: Override host variables
       ansible.builtin.set_fact:
-        # See: https://github.com/flannel-io/flannel/blob/67d603aaf45ef80f5dd39f43714fc5e6f8a637eb/Documentation/troubleshooting.md#Vagrant  # noqa yaml[line-length]
+        # See:
+        # https://github.com/flannel-io/flannel/blob/67d603aaf45ef80f5dd39f43714fc5e6f8a637eb/Documentation/troubleshooting.md#Vagrant
         flannel_iface: eth1
 
         # The test VMs might be a bit slow, so we give them more time to join the cluster:

molecule/ipv6/host_vars/control2.yml

@@ -0,0 +1,3 @@
+---
+node_ipv4: 192.168.123.12
+node_ipv6: fdad:bad:ba55::de:12

molecule/ipv6/molecule.yml

@@ -4,7 +4,6 @@ dependency:
 driver:
   name: vagrant
 platforms:
-
   - name: control1
     box: generic/ubuntu2204
     memory: 2048
@@ -21,6 +20,22 @@ platforms:
       ssh.username: "vagrant"
       ssh.password: "vagrant"
 
+  - name: control2
+    box: generic/ubuntu2204
+    memory: 2048
+    cpus: 2
+    groups:
+      - k3s_cluster
+      - master
+    interfaces:
+      - network_name: private_network
+        ip: fdad:bad:ba55::de:12
+    config_options:
+      # We currently can not use public-key based authentication on Ubuntu 22.04,
+      # see: https://github.com/chef/bento/issues/1405
+      ssh.username: "vagrant"
+      ssh.password: "vagrant"
+
   - name: node1
     box: generic/ubuntu2204
     memory: 2048

molecule/ipv6/overrides.yml

@@ -4,9 +4,15 @@
   tasks:
     - name: Override host variables (1/2)
       ansible.builtin.set_fact:
-        # See: https://github.com/flannel-io/flannel/blob/67d603aaf45ef80f5dd39f43714fc5e6f8a637eb/Documentation/troubleshooting.md#Vagrant  # noqa yaml[line-length]
+        # See:
+        # https://github.com/flannel-io/flannel/blob/67d603aaf45ef80f5dd39f43714fc5e6f8a637eb/Documentation/troubleshooting.md#Vagrant
         flannel_iface: eth1
 
+        # In this scenario, we have multiple interfaces that the VIP could be
+        # broadcasted on. Since we have assigned a dedicated private network
+        # here, let's make sure that it is used.
+        kube_vip_iface: eth1
+
         # The test VMs might be a bit slow, so we give them more time to join the cluster:
         retry_count: 45
 

molecule/resources/verify.yml

@@ -2,4 +2,4 @@
 - name: Verify
   hosts: all
   roles:
-    - verify/from_outside
+    - verify_from_outside

molecule/resources/verify_from_outside/defaults/main.yml

@@ -6,4 +6,4 @@ outside_host: localhost
 testing_namespace: molecule-verify-from-outside
 
 # The directory in which the example manifests reside
-example_manifests_path: ../../../../example
+example_manifests_path: ../../../example

molecule/resources/verify_from_outside/tasks/test/deploy-example.yml

@@ -34,14 +34,14 @@
 
     - name: Assert that the nginx welcome page is available
       ansible.builtin.uri:
-        url: http://{{ ip | ansible.utils.ipwrap }}:{{ port }}/
+        url: http://{{ ip | ansible.utils.ipwrap }}:{{ port_ }}/
         return_content: yes
       register: result
       failed_when: "'Welcome to nginx!' not in result.content"
       vars:
         ip: >-
           {{ nginx_services.resources[0].status.loadBalancer.ingress[0].ip }}
-        port: >-
+        port_: >-
           {{ nginx_services.resources[0].spec.ports[0].port }}
       # Deactivated linter rules:
       #   - jinja[invalid]: As of version 6.6.0, ansible-lint complains that the input to ipwrap

molecule/single_node/overrides.yml

@@ -4,7 +4,8 @@
   tasks:
     - name: Override host variables
       ansible.builtin.set_fact:
-        # See: https://github.com/flannel-io/flannel/blob/67d603aaf45ef80f5dd39f43714fc5e6f8a637eb/Documentation/troubleshooting.md#Vagrant  # noqa yaml[line-length]
+        # See:
+        # https://github.com/flannel-io/flannel/blob/67d603aaf45ef80f5dd39f43714fc5e6f8a637eb/Documentation/troubleshooting.md#Vagrant
         flannel_iface: eth1
 
         # The test VMs might be a bit slow, so we give them more time to join the cluster:

reboot.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 
-ansible-playbook reboot.yml -i inventory/my-cluster/hosts.ini
+ansible-playbook reboot.yml

reboot.yml

@@ -2,8 +2,8 @@
 - name: Reboot k3s_cluster
   hosts: k3s_cluster
   gather_facts: yes
-  become: yes
   tasks:
     - name: Reboot the nodes (and Wait upto 5 mins max)
+      become: true
       reboot:
         reboot_timeout: 300

requirements.in

@@ -1,5 +1,4 @@
 ansible-core>=2.13.5
-ansible-lint>=6.8.6
 jmespath>=1.0.1
 jsonpatch>=1.32
 kubernetes>=25.3.0
@@ -9,4 +8,3 @@ netaddr>=0.8.0
 pre-commit>=2.20.0
 pre-commit-hooks>=1.3.1
 pyyaml>=6.0
-yamllint>=1.28.0

requirements.txt

@@ -1,29 +1,21 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
 #
 #    pip-compile requirements.in
 #
-ansible-compat==2.2.4
-    # via
-    #   ansible-lint
-    #   molecule
-ansible-core==2.14.1
+ansible-compat==3.0.1
+    # via molecule
+ansible-core==2.15.2
     # via
     #   -r requirements.in
-    #   ansible-lint
-ansible-lint==6.8.6
-    # via -r requirements.in
+    #   ansible-compat
 arrow==1.2.3
     # via jinja2-time
 attrs==22.1.0
     # via jsonschema
 binaryornot==0.4.4
     # via cookiecutter
-black==22.10.0
-    # via ansible-lint
-bracex==2.3.post1
-    # via wcmatch
 cachetools==5.2.0
     # via google-auth
 certifi==2022.9.24
@@ -40,7 +32,6 @@ charset-normalizer==2.1.1
     # via requests
 click==8.1.3
     # via
-    #   black
     #   click-help-colors
     #   cookiecutter
     #   molecule
@@ -59,9 +50,7 @@ distro==1.8.0
 enrich==1.2.7
     # via molecule
 filelock==3.8.0
-    # via
-    #   ansible-lint
-    #   virtualenv
+    # via virtualenv
 google-auth==2.14.0
     # via kubernetes
 identify==2.5.8
@@ -79,14 +68,13 @@ jinja2-time==0.2.0
     # via cookiecutter
 jmespath==1.0.1
     # via -r requirements.in
-jsonpatch==1.32
+jsonpatch==1.33
     # via -r requirements.in
 jsonpointer==2.3
     # via jsonpatch
 jsonschema==4.17.0
     # via
     #   ansible-compat
-    #   ansible-lint
     #   molecule
 kubernetes==25.3.0
     # via -r requirements.in
@@ -98,8 +86,6 @@ molecule==4.0.4
     #   molecule-vagrant
 molecule-vagrant==1.0.0
     # via -r requirements.in
-mypy-extensions==0.4.3
-    # via black
 netaddr==0.8.0
     # via -r requirements.in
 nodeenv==1.7.0
@@ -110,16 +96,9 @@ packaging==21.3
     # via
     #   ansible-compat
     #   ansible-core
-    #   ansible-lint
     #   molecule
-pathspec==0.10.1
-    # via
-    #   black
-    #   yamllint
 platformdirs==2.5.2
-    # via
-    #   black
-    #   virtualenv
+    # via virtualenv
 pluggy==1.0.0
     # via molecule
 pre-commit==2.21.0
@@ -148,18 +127,16 @@ python-slugify==6.1.2
     # via cookiecutter
 python-vagrant==1.0.0
     # via molecule-vagrant
-pyyaml==6.0
+pyyaml==6.0.1
     # via
     #   -r requirements.in
     #   ansible-compat
     #   ansible-core
-    #   ansible-lint
     #   cookiecutter
     #   kubernetes
     #   molecule
     #   molecule-vagrant
     #   pre-commit
-    #   yamllint
 requests==2.28.1
     # via
     #   cookiecutter
@@ -171,15 +148,12 @@ resolvelib==0.8.1
     # via ansible-core
 rich==12.6.0
     # via
-    #   ansible-lint
     #   enrich
     #   molecule
 rsa==4.9
     # via google-auth
 ruamel-yaml==0.17.21
-    # via
-    #   ansible-lint
-    #   pre-commit-hooks
+    # via pre-commit-hooks
 selinux==0.2.1
     # via molecule-vagrant
 six==1.16.0
@@ -187,7 +161,7 @@ six==1.16.0
     #   google-auth
     #   kubernetes
     #   python-dateutil
-subprocess-tee==0.3.5
+subprocess-tee==0.4.1
     # via ansible-compat
 text-unidecode==1.3
     # via python-slugify
@@ -197,14 +171,8 @@ urllib3==1.26.12
     #   requests
 virtualenv==20.16.6
     # via pre-commit
-wcmatch==8.4.1
-    # via ansible-lint
 websocket-client==1.4.2
     # via kubernetes
-yamllint==1.29.0
-    # via
-    #   -r requirements.in
-    #   ansible-lint
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools

reset.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 
-ansible-playbook reset.yml -i inventory/my-cluster/hosts.ini
+ansible-playbook reset.yml

reset.yml

@@ -1,13 +1,24 @@
 ---
-
-- hosts: k3s_cluster
+- name: Reset k3s cluster
+  hosts: k3s_cluster
   gather_facts: yes
-  become: yes
   roles:
     - role: reset
+      become: true
     - role: raspberrypi
+      become: true
       vars: {state: absent}
   post_tasks:
     - name: Reboot and wait for node to come back up
+      become: true
       reboot:
         reboot_timeout: 3600
+
+- name: Revert changes to Proxmox cluster
+  hosts: proxmox
+  gather_facts: true
+  become: yes
+  remote_user: "{{ proxmox_lxc_ssh_user }}"
+  roles:
+    - role: reset_proxmox_lxc
+      when: proxmox_lxc_configure

roles/k3s/master/defaults/main.yml

@@ -1,12 +0,0 @@
----
-ansible_user: root
-server_init_args: >-
-  {% if groups['master'] | length > 1 %}
-    {% if ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname'] %}
-      --cluster-init
-    {% else %}
-      --server https://{{ hostvars[groups['master'][0]].k3s_node_ip }}:6443
-    {% endif %}
-    --token {{ k3s_token }}
-  {% endif %}
-  {{ extra_server_args | default('') }}

roles/k3s/master/tasks/metallb.yml

@@ -1,27 +0,0 @@
----
-- name: Create manifests directory on first master
-  file:
-    path: /var/lib/rancher/k3s/server/manifests
-    state: directory
-    owner: root
-    group: root
-    mode: 0644
-  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
-
-- name: Copy metallb namespace to first master
-  template:
-    src: "metallb.namespace.j2"
-    dest: "/var/lib/rancher/k3s/server/manifests/metallb-namespace.yaml"
-    owner: root
-    group: root
-    mode: 0644
-  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
-
-- name: Copy metallb manifest to first master
-  template:
-    src: "metallb.crds.j2"
-    dest: "/var/lib/rancher/k3s/server/manifests/metallb-crds.yaml"
-    owner: root
-    group: root
-    mode: 0644
-  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']

roles/k3s/master/tasks/vip.yml

@@ -1,27 +0,0 @@
----
-- name: Create manifests directory on first master
-  file:
-    path: /var/lib/rancher/k3s/server/manifests
-    state: directory
-    owner: root
-    group: root
-    mode: 0644
-  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
-
-- name: Copy vip rbac manifest to first master
-  template:
-    src: "vip.rbac.yaml.j2"
-    dest: "/var/lib/rancher/k3s/server/manifests/vip-rbac.yaml"
-    owner: root
-    group: root
-    mode: 0644
-  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']
-
-- name: Copy vip manifest to first master
-  template:
-    src: "vip.yaml.j2"
-    dest: "/var/lib/rancher/k3s/server/manifests/vip.yaml"
-    owner: root
-    group: root
-    mode: 0644
-  when: ansible_hostname == hostvars[groups['master'][0]]['ansible_hostname']

roles/k3s/master/templates/metallb.namespace.j2

@@ -1,6 +0,0 @@
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: metallb-system
-  labels:
-    app: metallb

roles/k3s/master/templates/vip.rbac.yaml.j2

@@ -1,32 +0,0 @@
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: kube-vip
-  namespace: kube-system
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRole
-metadata:
-  annotations:
-    rbac.authorization.kubernetes.io/autoupdate: "true"
-  name: system:kube-vip-role
-rules:
-  - apiGroups: [""]
-    resources: ["services", "services/status", "nodes", "endpoints"]
-    verbs: ["list","get","watch", "update"]
-  - apiGroups: ["coordination.k8s.io"]
-    resources: ["leases"]
-    verbs: ["list", "get", "watch", "update", "create"]
----
-kind: ClusterRoleBinding
-apiVersion: rbac.authorization.k8s.io/v1
-metadata:
-  name: system:kube-vip-binding
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: system:kube-vip-role
-subjects:
-- kind: ServiceAccount
-  name: kube-vip
-  namespace: kube-system

roles/k3s/node/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+# Name of the master group
+group_name_master: master

roles/k3s_agent/templates/k3s.service.j2

@@ -7,7 +7,7 @@ After=network-online.target
 Type=notify
 ExecStartPre=-/sbin/modprobe br_netfilter
 ExecStartPre=-/sbin/modprobe overlay
-ExecStart=/usr/local/bin/k3s agent --server https://{{ apiserver_endpoint | ansible.utils.ipwrap }}:6443 --token {{ hostvars[groups['master'][0]]['token'] | default(k3s_token) }} {{ extra_agent_args | default("") }}
+ExecStart=/usr/local/bin/k3s agent --server https://{{ apiserver_endpoint | ansible.utils.ipwrap }}:6443 --token {{ hostvars[groups[group_name_master | default('master')][0]]['token'] | default(k3s_token) }} {{ extra_agent_args | default("") }}
 KillMode=process
 Delegate=yes
 # Having non-zero Limit*s causes performance problems due to accounting overhead

roles/k3s_server/defaults/main.yml

@@ -0,0 +1,20 @@
+---
+# If you want to explicitly define an interface that ALL control nodes
+# should use to propagate the VIP, define it here. Otherwise, kube-vip
+# will determine the right interface automatically at runtime.
+kube_vip_iface: null
+
+# Name of the master group
+group_name_master: master
+
+# yamllint disable rule:line-length
+server_init_args: >-
+  {% if groups[group_name_master | default('master')] | length > 1 %}
+    {% if ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname'] %}
+      --cluster-init
+    {% else %}
+      --server https://{{ hostvars[groups[group_name_master | default('master')][0]].k3s_node_ip | split(",") | first | ansible.utils.ipwrap }}:6443
+    {% endif %}
+    --token {{ k3s_token }}
+  {% endif %}
+  {{ extra_server_args | default('') }}

roles/k3s_server/tasks/main.yml

@@ -1,17 +1,16 @@
 ---
 
-- name: Clean previous runs of k3s-init
+- name: Stop k3s-init
   systemd:
     name: k3s-init
     state: stopped
   failed_when: false
 
-- name: Clean previous runs of k3s-init
+- name: Clean previous runs of k3s-init  # noqa command-instead-of-module
+  # The systemd module does not support "reset-failed", so we need to resort to command.
   command: systemctl reset-failed k3s-init
   failed_when: false
   changed_when: false
-  args:
-    warn: false  # The ansible systemd module does not support reset-failed
 
 - name: Deploy vip manifest
   include_tasks: vip.yml
@@ -28,12 +27,13 @@
     creates: "{{ systemd_dir }}/k3s.service"
 
 - name: Verification
+  when: not ansible_check_mode
   block:
     - name: Verify that all nodes actually joined (check k3s-init.service if this fails)
       command:
         cmd: k3s kubectl get nodes -l "node-role.kubernetes.io/master=true" -o=jsonpath="{.items[*].metadata.name}"
       register: nodes
-      until: nodes.rc == 0 and (nodes.stdout.split() | length) == (groups['master'] | length)
+      until: nodes.rc == 0 and (nodes.stdout.split() | length) == (groups[group_name_master | default('master')] | length)  # yamllint disable-line rule:line-length
       retries: "{{ retry_count | default(20) }}"
       delay: 10
       changed_when: false
@@ -49,7 +49,6 @@
         name: k3s-init
         state: stopped
       failed_when: false
-  when: not ansible_check_mode
 
 - name: Copy K3s service file
   register: k3s_service
@@ -97,24 +96,24 @@
 
 - name: Create directory .kube
   file:
-    path: ~{{ ansible_user }}/.kube
+    path: "{{ ansible_user_dir }}/.kube"
     state: directory
-    owner: "{{ ansible_user }}"
+    owner: "{{ ansible_user_id }}"
     mode: "u=rwx,g=rx,o="
 
 - name: Copy config file to user home directory
   copy:
     src: /etc/rancher/k3s/k3s.yaml
-    dest: ~{{ ansible_user }}/.kube/config
+    dest: "{{ ansible_user_dir }}/.kube/config"
     remote_src: yes
-    owner: "{{ ansible_user }}"
+    owner: "{{ ansible_user_id }}"
     mode: "u=rw,g=,o="
 
 - name: Configure kubectl cluster to {{ endpoint_url }}
   command: >-
     k3s kubectl config set-cluster default
       --server={{ endpoint_url }}
-      --kubeconfig ~{{ ansible_user }}/.kube/config
+      --kubeconfig {{ ansible_user_dir }}/.kube/config
   changed_when: true
   vars:
     endpoint_url: >-

roles/k3s_server/tasks/metallb.yml

@@ -0,0 +1,30 @@
+---
+- name: Create manifests directory on first master
+  file:
+    path: /var/lib/rancher/k3s/server/manifests
+    state: directory
+    owner: root
+    group: root
+    mode: 0644
+  when: ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname']
+
+- name: "Download to first master: manifest for metallb-{{ metal_lb_type }}"
+  ansible.builtin.get_url:
+    url: "https://raw.githubusercontent.com/metallb/metallb/{{ metal_lb_controller_tag_version }}/config/manifests/metallb-{{ metal_lb_type }}.yaml"  # noqa yaml[line-length]
+    dest: "/var/lib/rancher/k3s/server/manifests/metallb-crds.yaml"
+    owner: root
+    group: root
+    mode: 0644
+  when: ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname']
+
+- name: Set image versions in manifest for metallb-{{ metal_lb_type }}
+  ansible.builtin.replace:
+    path: "/var/lib/rancher/k3s/server/manifests/metallb-crds.yaml"
+    regexp: "{{ item.change | ansible.builtin.regex_escape }}"
+    replace: "{{ item.to }}"
+  with_items:
+    - change: "metallb/speaker:{{ metal_lb_controller_tag_version }}"
+      to: "metallb/speaker:{{ metal_lb_speaker_tag_version }}"
+  loop_control:
+    label: "{{ item.change }} => {{ item.to }}"
+  when: ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname']

roles/k3s_server/tasks/vip.yml

@@ -0,0 +1,27 @@
+---
+- name: Create manifests directory on first master
+  file:
+    path: /var/lib/rancher/k3s/server/manifests
+    state: directory
+    owner: root
+    group: root
+    mode: 0644
+  when: ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname']
+
+- name: Download vip rbac manifest to first master
+  ansible.builtin.get_url:
+    url: "https://raw.githubusercontent.com/kube-vip/kube-vip/{{ kube_vip_tag_version }}/docs/manifests/rbac.yaml"
+    dest: "/var/lib/rancher/k3s/server/manifests/vip-rbac.yaml"
+    owner: root
+    group: root
+    mode: 0644
+  when: ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname']
+
+- name: Copy vip manifest to first master
+  template:
+    src: "vip.yaml.j2"
+    dest: "/var/lib/rancher/k3s/server/manifests/vip.yaml"
+    owner: root
+    group: root
+    mode: 0644
+  when: ansible_hostname == hostvars[groups[group_name_master | default('master')][0]]['ansible_hostname']

roles/k3s_server/templates/vip.yaml.j2

@@ -30,8 +30,10 @@ spec:
           value: "true"
         - name: port
           value: "6443"
+{% if kube_vip_iface %}
         - name: vip_interface
-          value: {{ flannel_iface }}
+          value: {{ kube_vip_iface }}
+{% endif %}
         - name: vip_cidr
           value: "{{ apiserver_endpoint | ansible.utils.ipsubnet | ansible.utils.ipaddr('prefix') }}"
         - name: cp_enable

roles/k3s_server_post/defaults/main.yml

@@ -1,3 +1,6 @@
 ---
 # Timeout to wait for MetalLB services to come up
 metal_lb_available_timeout: 120s
+
+# Name of the master group
+group_name_master: master

roles/k3s_server_post/tasks/metallb.yml

@@ -3,25 +3,25 @@
   file:
     path: /tmp/k3s
     state: directory
-    owner: "{{ ansible_user }}"
+    owner: "{{ ansible_user_id }}"
     mode: 0755
-  with_items: "{{ groups['master'] }}"
+  with_items: "{{ groups[group_name_master | default('master')] }}"
   run_once: true
 
 - name: Copy metallb CRs manifest to first master
   template:
     src: "metallb.crs.j2"
     dest: "/tmp/k3s/metallb-crs.yaml"
-    owner: "{{ ansible_user }}"
+    owner: "{{ ansible_user_id }}"
     mode: 0755
-  with_items: "{{ groups['master'] }}"
+  with_items: "{{ groups[group_name_master | default('master')] }}"
   run_once: true
 
 - name: Test metallb-system namespace
   command: >-
     k3s kubectl -n metallb-system
   changed_when: false
-  with_items: "{{ groups['master'] }}"
+  with_items: "{{ groups[group_name_master | default('master')] }}"
   run_once: true
 
 - name: Wait for MetalLB resources
@@ -66,7 +66,7 @@
   command: >-
     k3s kubectl -n metallb-system get endpoints webhook-service
   changed_when: false
-  with_items: "{{ groups['master'] }}"
+  with_items: "{{ groups[group_name_master | default('master')] }}"
   run_once: true
 
 - name: Apply metallb CRs
@@ -79,11 +79,23 @@
   until: this.rc == 0
   retries: 5
 
-- name: Test metallb-system resources
+- name: Test metallb-system resources for Layer 2 configuration
   command: >-
     k3s kubectl -n metallb-system get {{ item }}
   changed_when: false
   run_once: true
+  when: metal_lb_mode == "layer2"
   with_items:
     - IPAddressPool
     - L2Advertisement
+
+- name: Test metallb-system resources for BGP configuration
+  command: >-
+    k3s kubectl -n metallb-system get {{ item }}
+  changed_when: false
+  run_once: true
+  when: metal_lb_mode == "bgp"
+  with_items:
+    - IPAddressPool
+    - BGPPeer
+    - BGPAdvertisement

roles/k3s_server_post/templates/metallb.crs.j2

@@ -13,9 +13,31 @@ spec:
 {% for range in metal_lb_ip_range %}
   - {{ range }}
 {% endfor %}
+
+{% if metal_lb_mode == "layer2" %}
 ---
 apiVersion: metallb.io/v1beta1
 kind: L2Advertisement
 metadata:
   name: default
   namespace: metallb-system
+{% endif %}
+{% if metal_lb_mode == "bgp" %}
+---
+apiVersion: metallb.io/v1beta2
+kind: BGPPeer
+metadata:
+  name: default
+  namespace: metallb-system
+spec:
+  myASN: {{ metal_lb_bgp_my_asn }}
+  peerASN: {{ metal_lb_bgp_peer_asn }}
+  peerAddress: {{ metal_lb_bgp_peer_address }}
+
+---
+apiVersion: metallb.io/v1beta1
+kind: BGPAdvertisement
+metadata:
+  name: default
+  namespace: metallb-system
+{% endif %}

roles/lxc/handlers/main.yml

@@ -0,0 +1,4 @@
+---
+- name: Reboot server
+  become: true
+  reboot:

roles/lxc/tasks/main.yml

@@ -0,0 +1,21 @@
+---
+- name: Check for rc.local file
+  stat:
+    path: /etc/rc.local
+  register: rcfile
+
+- name: Create rc.local if needed
+  lineinfile:
+    path: /etc/rc.local
+    line: "#!/bin/sh -e"
+    create: true
+    insertbefore: BOF
+    mode: "u=rwx,g=rx,o=rx"
+  when: not rcfile.stat.exists
+
+- name: Write rc.local file
+  blockinfile:
+    path: /etc/rc.local
+    content: "{{ lookup('template', 'templates/rc.local.j2') }}"
+    state: present
+  notify: reboot server

roles/prereq/tasks/main.yml

@@ -1,30 +1,30 @@
 ---
 - name: Set same timezone on every Server
-  timezone:
+  community.general.timezone:
     name: "{{ system_timezone }}"
   when: (system_timezone is defined) and (system_timezone != "Your/Timezone")
 
 - name: Set SELinux to disabled state
-  selinux:
+  ansible.posix.selinux:
     state: disabled
   when: ansible_os_family == "RedHat"
 
 - name: Enable IPv4 forwarding
-  sysctl:
+  ansible.posix.sysctl:
     name: net.ipv4.ip_forward
     value: "1"
     state: present
     reload: yes
 
 - name: Enable IPv6 forwarding
-  sysctl:
+  ansible.posix.sysctl:
     name: net.ipv6.conf.all.forwarding
     value: "1"
     state: present
     reload: yes
 
 - name: Enable IPv6 router advertisements
-  sysctl:
+  ansible.posix.sysctl:
     name: net.ipv6.conf.all.accept_ra
     value: "2"
     state: present
@@ -38,13 +38,13 @@
   when: ansible_os_family == "RedHat"
 
 - name: Load br_netfilter
-  modprobe:
+  community.general.modprobe:
     name: br_netfilter
     state: present
   when: ansible_os_family == "RedHat"
 
 - name: Set bridge-nf-call-iptables (just to be sure)
-  sysctl:
+  ansible.posix.sysctl:
     name: "{{ item }}"
     value: "1"
     state: present

roles/proxmox_lxc/handlers/main.yml

@@ -0,0 +1,11 @@
+---
+- name: Reboot containers
+  block:
+    - name: Get container ids from filtered files
+      set_fact:
+        proxmox_lxc_filtered_ids: >-
+          {{ proxmox_lxc_filtered_files | map("split", "/") | map("last") | map("split", ".") | map("first") }}
+    - name: Reboot container
+      command: "pct reboot {{ item }}"
+      loop: "{{ proxmox_lxc_filtered_ids }}"
+      changed_when: true

roles/proxmox_lxc/tasks/main.yml

@@ -0,0 +1,44 @@
+---
+- name: Check for container files that exist on this host
+  stat:
+    path: "/etc/pve/lxc/{{ item }}.conf"
+  loop: "{{ proxmox_lxc_ct_ids }}"
+  register: stat_results
+
+- name: Filter out files that do not exist
+  set_fact:
+    proxmox_lxc_filtered_files:
+      '{{ stat_results.results | rejectattr("stat.exists", "false") | map(attribute="stat.path") }}'
+
+# https://gist.github.com/triangletodd/02f595cd4c0dc9aac5f7763ca2264185
+- name: Ensure lxc config has the right apparmor profile
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.apparmor.profile"
+    line: "lxc.apparmor.profile: unconfined"
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers
+
+- name: Ensure lxc config has the right cgroup
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.cgroup.devices.allow"
+    line: "lxc.cgroup.devices.allow: a"
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers
+
+- name: Ensure lxc config has the right cap drop
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.cap.drop"
+    line: "lxc.cap.drop: "
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers
+
+- name: Ensure lxc config has the right mounts
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.mount.auto"
+    line: 'lxc.mount.auto: "proc:rw sys:rw"'
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers

roles/raspberrypi/handlers/main.yml

@@ -1,3 +1,3 @@
 ---
-- name: reboot
+- name: Reboot
   reboot:

roles/raspberrypi/tasks/main.yml

@@ -47,20 +47,16 @@
     - raspberry_pi|default(false)
     - ansible_facts.lsb.description|default("") is match("Debian.*bullseye")
 
-- name: execute OS related tasks on the Raspberry Pi - {{ action }}
+- name: Execute OS related tasks on the Raspberry Pi - {{ action_ }}
   include_tasks: "{{ item }}"
   with_first_found:
-    - "{{ action }}/{{ detected_distribution }}-{{ detected_distribution_major_version }}.yml"
-    - "{{ action }}/{{ detected_distribution }}.yml"
-    - "{{ action }}/{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yml"
-    - "{{ action }}/{{ ansible_distribution }}.yml"
-    - "{{ action }}/default.yml"
+    - "{{ action_ }}/{{ detected_distribution }}-{{ detected_distribution_major_version }}.yml"
+    - "{{ action_ }}/{{ detected_distribution }}.yml"
+    - "{{ action_ }}/{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yml"
+    - "{{ action_ }}/{{ ansible_distribution }}.yml"
+    - "{{ action_ }}/default.yml"
   vars:
-    action: >-
-      {% if state == "present" -%}
-      setup
-      {%- else -%}
-      teardown
-      {%- endif %}
+    action_: >-
+      {% if state == "present" %}setup{% else %}teardown{% endif %}
   when:
     - raspberry_pi|default(false)

roles/raspberrypi/tasks/setup/Raspbian.yml

@@ -8,20 +8,22 @@
   notify: reboot
 
 - name: Install iptables
-  apt: name=iptables state=present
+  apt:
+    name: iptables
+    state: present
 
 - name: Flush iptables before changing to iptables-legacy
   iptables:
     flush: true
 
 - name: Changing to iptables-legacy
-  alternatives:
+  community.general.alternatives:
     path: /usr/sbin/iptables-legacy
     name: iptables
   register: ip4_legacy
 
 - name: Changing to ip6tables-legacy
-  alternatives:
+  community.general.alternatives:
     path: /usr/sbin/ip6tables-legacy
     name: ip6tables
   register: ip6_legacy

roles/reset/tasks/main.yml

@@ -54,3 +54,31 @@
   file:
     path: /tmp/k3s
     state: absent
+
+- name: Check if rc.local exists
+  stat:
+    path: /etc/rc.local
+  register: rcfile
+
+- name: Remove rc.local modifications for proxmox lxc containers
+  become: true
+  blockinfile:
+    path: /etc/rc.local
+    content: "{{ lookup('template', 'templates/rc.local.j2') }}"
+    create: false
+    state: absent
+  when: proxmox_lxc_configure and rcfile.stat.exists
+
+- name: Check rc.local for cleanup
+  become: true
+  slurp:
+    src: /etc/rc.local
+  register: rcslurp
+  when: proxmox_lxc_configure and rcfile.stat.exists
+
+- name: Cleanup rc.local if we only have a Shebang line
+  become: true
+  file:
+    path: /etc/rc.local
+    state: absent
+  when: proxmox_lxc_configure and rcfile.stat.exists and ((rcslurp.content | b64decode).splitlines() | length) <= 1

roles/reset/tasks/umount_with_children.yml

@@ -9,7 +9,7 @@
   check_mode: false
 
 - name: Umount filesystem
-  mount:
+  ansible.posix.mount:
     path: "{{ item }}"
     state: unmounted
   with_items:

roles/reset_proxmox_lxc/handlers/main.yml

@@ -0,0 +1 @@
+../../proxmox_lxc/handlers/main.yml

roles/reset_proxmox_lxc/tasks/main.yml

@@ -0,0 +1,47 @@
+---
+- name: Check for container files that exist on this host
+  stat:
+    path: "/etc/pve/lxc/{{ item }}.conf"
+  loop: "{{ proxmox_lxc_ct_ids }}"
+  register: stat_results
+
+- name: Filter out files that do not exist
+  set_fact:
+    proxmox_lxc_filtered_files:
+      '{{ stat_results.results | rejectattr("stat.exists", "false") | map(attribute="stat.path") }}'
+
+- name: Remove LXC apparmor profile
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.apparmor.profile"
+    line: "lxc.apparmor.profile: unconfined"
+    state: absent
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers
+
+- name: Remove lxc cgroups
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.cgroup.devices.allow"
+    line: "lxc.cgroup.devices.allow: a"
+    state: absent
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers
+
+- name: Remove lxc cap drop
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.cap.drop"
+    line: "lxc.cap.drop: "
+    state: absent
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers
+
+- name: Remove lxc mounts
+  lineinfile:
+    dest: "{{ item }}"
+    regexp: "^lxc.mount.auto"
+    line: 'lxc.mount.auto: "proc:rw sys:rw"'
+    state: absent
+  loop: "{{ proxmox_lxc_filtered_files }}"
+  notify: reboot containers

site.yml

@@ -1,24 +1,40 @@
 ---
+- name: Prepare Proxmox cluster
+  hosts: proxmox
+  gather_facts: true
+  become: yes
+  roles:
+    - role: proxmox_lxc
+      when: proxmox_lxc_configure
 
-- hosts: k3s_cluster
+- name: Prepare k3s nodes
+  hosts: k3s_cluster
   gather_facts: yes
-  become: yes
   roles:
+    - role: lxc
+      become: true
+      when: proxmox_lxc_configure
     - role: prereq
+      become: true
     - role: download
+      become: true
     - role: raspberrypi
+      become: true
 
-- hosts: master
-  become: yes
+- name: Setup k3s servers
+  hosts: master
   roles:
-    - role: k3s/master
+    - role: k3s_server
+      become: true
 
-- hosts: node
-  become: yes
+- name: Setup k3s agents
+  hosts: node
   roles:
-    - role: k3s/node
+    - role: k3s_agent
+      become: true
 
-- hosts: master
-  become: yes
+- name: Configure k3s cluster
+  hosts: master
   roles:
-    - role: k3s/post
+    - role: k3s_server_post
+      become: true

templates/rc.local.j2

@@ -0,0 +1,8 @@
+# Kubeadm 1.15 needs /dev/kmsg to be there, but it's not in lxc, but we can just use /dev/console instead
+# see: https://github.com/kubernetes-sigs/kind/issues/662
+if [ ! -e /dev/kmsg ]; then
+    ln -s /dev/console /dev/kmsg
+fi
+
+# https://medium.com/@kvaps/run-kubernetes-in-lxc-container-f04aa94b6c9c
+mount --make-rshared /