Update ansible/group_vars/all.yml, ansible/roles/base/files/10periodic, ansible/roles/base/files/authorized_keys_administrator, ansible/roles/base/files/authorized_keys_user, ansible/roles/base/files/issue, ansible/roles/base/files/motd, ansible/roles/base/files/sshd_config_secured, ansible/roles/base/files/sshd_config_secured_redhat, ansible/roles/base/tasks/main.yml, ansible/roles/base/tasks/ssh.yml, ansible/roles/base/vars/main.yml, ansible/roles/cloudflare/tasks/main.yml, ansible/roles/k3s/argocd/tasks/main.yml, ansible/roles/k3s/argocd/templates/apps.yaml, ansible/roles/k3s/argocd/templates/argocd.yaml, ansible/roles/k3s/download/tasks/main.yml, ansible/roles/k3s/master/defaults/main.yml, ansible/roles/k3s/master/tasks/main.yml, ansible/roles/k3s/master/templates/content.j2, ansible/roles/k3s/master/templates/k3s.service.j2, ansible/roles/k3s/master/templates/metallb.configmap.j2, ansible/roles/k3s/master/templates/metallb.crds.j2, ansible/roles/k3s/master/templates/metallb.namespace.j2, ansible/roles/k3s/master/templates/vip.rbac.yaml.j2, ansible/roles/k3s/master/templates/vip.yaml.j2, ansible/roles/k3s/node/tasks/main.yml, ansible/roles/k3s/node/templates/k3s.service.j2, ansible/roles/k3s/post/defaults/main.yml, ansible/roles/k3s/post/tasks/main.yml, ansible/roles/k3s/post/templates/metallb.crs.j2, ansible/roles/k3s/prereq/tasks/main.yml, ansible/roles/update/tasks/main.yml, ansible/templates/packages.yml, ansible/ansible.cfg

ansible/roles/base/files/10periodic

@@ -0,0 +1,4 @@
+APT::Periodic::Update-Package-Lists "1";
+APT::Periodic::Download-Upgradeable-Packages "1";
+APT::Periodic::AutocleanInterval "7";
+APT::Periodic::Unattended-Upgrade "1";

ansible/roles/base/files/authorized_keys_administrator

@@ -0,0 +1 @@
+ssh-rsa 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 ansible

ansible/roles/base/files/authorized_keys_user

@@ -0,0 +1 @@
+ssh-rsa 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 

ansible/roles/base/files/issue

@@ -0,0 +1,3 @@
+Use of this system is restricted to authorized users only, and all use is subjected to an acceptable use policy.
+
+IF YOU ARE NOT AUTHORIZED TO USE THIS SYSTEM, DISCONNECT NOW.

ansible/roles/base/files/motd

@@ -0,0 +1,3 @@
+THIS SYSTEM IS FOR AUTHORIZED USE ONLY
+
+All activities are logged and monitored.

ansible/roles/base/files/sshd_config_secured

@@ -0,0 +1,94 @@
+# Package generated configuration file
+# See the sshd_config(5) manpage for details
+
+# What ports, IPs and protocols we listen for
+Port 22
+# Use these options to restrict which interfaces/protocols sshd will bind to
+#ListenAddress ::
+#ListenAddress 0.0.0.0
+Protocol 2
+# HostKeys for protocol version 2
+HostKey /etc/ssh/ssh_host_rsa_key
+HostKey /etc/ssh/ssh_host_dsa_key
+HostKey /etc/ssh/ssh_host_ecdsa_key
+HostKey /etc/ssh/ssh_host_ed25519_key
+#Privilege Separation is turned on for security
+UsePrivilegeSeparation yes
+
+# Lifetime and size of ephemeral version 1 server key
+KeyRegenerationInterval 3600
+ServerKeyBits 1024
+
+# Logging
+SyslogFacility AUTH
+LogLevel INFO
+
+# Authentication:
+LoginGraceTime 120
+PermitRootLogin no
+StrictModes yes
+
+RSAAuthentication yes
+PubkeyAuthentication yes
+#AuthorizedKeysFile %h/.ssh/authorized_keys
+
+# Don't read the user's ~/.rhosts and ~/.shosts files
+IgnoreRhosts yes
+# For this to work you will also need host keys in /etc/ssh_known_hosts
+RhostsRSAAuthentication no
+# similar for protocol version 2
+HostbasedAuthentication no
+# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
+#IgnoreUserKnownHosts yes
+
+# To enable empty passwords, change to yes (NOT RECOMMENDED)
+PermitEmptyPasswords no
+
+# Change to yes to enable challenge-response passwords (beware issues with
+# some PAM modules and threads)
+ChallengeResponseAuthentication no
+
+# Change to no to disable tunnelled clear text passwords
+PasswordAuthentication no
+
+# Kerberos options
+#KerberosAuthentication no
+#KerberosGetAFSToken no
+#KerberosOrLocalPasswd yes
+#KerberosTicketCleanup yes
+
+# GSSAPI options
+#GSSAPIAuthentication no
+#GSSAPICleanupCredentials yes
+
+X11Forwarding no
+X11DisplayOffset 10
+PrintMotd no
+PrintLastLog yes
+TCPKeepAlive yes
+#UseLogin no
+
+#MaxStartups 10:30:60
+#Banner /etc/issue.net
+
+# Allow client to pass locale environment variables
+AcceptEnv LANG LC_*
+
+Subsystem sftp /usr/lib/openssh/sftp-server
+
+# Set this to 'yes' to enable PAM authentication, account processing,
+# and session processing. If this is enabled, PAM authentication will
+# be allowed through the ChallengeResponseAuthentication and
+# PasswordAuthentication.  Depending on your PAM configuration,
+# PAM authentication via ChallengeResponseAuthentication may bypass
+# the setting of "PermitRootLogin without-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and ChallengeResponseAuthentication to 'no'.
+UsePAM yes
+
+ClientAliveInterval 300
+
+#enable remote powershell
+#Subsystem powershell /usr/bin/pwsh -sshs -NoLogo
+

ansible/roles/base/files/sshd_config_secured_redhat

@@ -0,0 +1,135 @@
+#	$OpenBSD: sshd_config,v 1.104 2021/07/02 05:11:21 dtucker Exp $
+
+# This is the sshd server system-wide configuration file.  See
+# sshd_config(5) for more information.
+
+# This sshd was compiled with PATH=/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin
+
+# The strategy used for options in the default sshd_config shipped with
+# OpenSSH is to specify options with their default value where
+# possible, but leave them commented.  Uncommented options override the
+# default value.
+
+# To modify the system-wide sshd configuration, create a  *.conf  file under
+#  /etc/ssh/sshd_config.d/  which will be automatically included below
+Include /etc/ssh/sshd_config.d/*.conf
+
+# If you want to change the port on a SELinux system, you have to tell
+# SELinux about this change.
+# semanage port -a -t ssh_port_t -p tcp #PORTNUMBER
+#
+#Port 22
+#AddressFamily any
+#ListenAddress 0.0.0.0
+#ListenAddress ::
+
+#HostKey /etc/ssh/ssh_host_rsa_key
+#HostKey /etc/ssh/ssh_host_ecdsa_key
+#HostKey /etc/ssh/ssh_host_ed25519_key
+
+# Ciphers and keying
+#RekeyLimit default none
+
+# Logging
+#SyslogFacility AUTH
+#LogLevel INFO
+
+# Authentication:
+
+#LoginGraceTime 2m
+PermitRootLogin no
+#StrictModes yes
+#MaxAuthTries 6
+#MaxSessions 10
+
+PubkeyAuthentication yes
+
+# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
+# but this is overridden so installations will only check .ssh/authorized_keys
+AuthorizedKeysFile .ssh/authorized_keys
+
+#AuthorizedPrincipalsFile none
+
+#AuthorizedKeysCommand none
+#AuthorizedKeysCommandUser nobody
+
+# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
+#HostbasedAuthentication no
+# Change to yes if you don't trust ~/.ssh/known_hosts for
+# HostbasedAuthentication
+#IgnoreUserKnownHosts no
+# Don't read the user's ~/.rhosts and ~/.shosts files
+#IgnoreRhosts yes
+
+# To disable tunneled clear text passwords, change to no here!
+#PasswordAuthentication yes
+PermitEmptyPasswords no
+
+# Change to no to disable s/key passwords
+#KbdInteractiveAuthentication yes
+
+# Kerberos options
+#KerberosAuthentication no
+#KerberosOrLocalPasswd yes
+#KerberosTicketCleanup yes
+#KerberosGetAFSToken no
+#KerberosUseKuserok yes
+
+# GSSAPI options
+#GSSAPIAuthentication no
+#GSSAPICleanupCredentials yes
+#GSSAPIStrictAcceptorCheck yes
+#GSSAPIKeyExchange no
+#GSSAPIEnablek5users no
+
+# Set this to 'yes' to enable PAM authentication, account processing,
+# and session processing. If this is enabled, PAM authentication will
+# be allowed through the KbdInteractiveAuthentication and
+# PasswordAuthentication.  Depending on your PAM configuration,
+# PAM authentication via KbdInteractiveAuthentication may bypass
+# the setting of "PermitRootLogin without-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and KbdInteractiveAuthentication to 'no'.
+# WARNING: 'UsePAM no' is not supported in Fedora and may cause several
+# problems.
+#UsePAM no
+
+#AllowAgentForwarding yes
+#AllowTcpForwarding yes
+#GatewayPorts no
+#X11Forwarding no
+#X11DisplayOffset 10
+#X11UseLocalhost yes
+#PermitTTY yes
+#PrintMotd yes
+#PrintLastLog yes
+#TCPKeepAlive yes
+#PermitUserEnvironment no
+#Compression delayed
+ClientAliveInterval 300
+#ClientAliveCountMax 3
+#UseDNS no
+#PidFile /var/run/sshd.pid
+#MaxStartups 10:30:100
+#PermitTunnel no
+#ChrootDirectory none
+#VersionAddendum none
+
+# no default banner path
+#Banner none
+
+# override default of no subsystems
+Subsystem sftp	/usr/libexec/openssh/sftp-server
+
+# Example of overriding settings on a per-user basis
+#Match User anoncvs
+#	X11Forwarding no
+#	AllowTcpForwarding no
+#	PermitTTY no
+#	ForceCommand cvs server
+PasswordAuthentication no
+
+#enable remote powershell
+#Subsystem powershell /usr/bin/pwsh -sshs -NoLogo
+

ansible/roles/base/tasks/main.yml

@@ -0,0 +1,82 @@
+---
+- name: Run Package tasks
+  include_tasks:
+    file: ./templates/packages.yml
+
+- name: Create user account
+  user: 
+    name: "{{ username }}"
+    password: "{{ userpassword }}"
+    groups: sudo
+    shell: /bin/bash
+    state: present
+    createhome: yes
+  when: ansible_os_family == "Debian"   
+
+- name: Create user account
+  user: 
+    name: "{{ username }}"
+    password: "{{ userpassword }}"
+    shell: /bin/bash
+    groups: wheel
+    state: present
+    createhome: yes
+  when: ansible_os_family == "RedHat"   
+    
+- name: Run SSH tasks
+  include_tasks:
+    file: ssh.yml
+
+- name: Copy unattended-upgrades file
+  copy: 
+    src: files/10periodic
+    dest: /etc/apt/apt.conf.d/10periodic 
+    owner: root 
+    group: root 
+    mode: "0644"
+    force: yes
+  when: ansible_os_family == "Debian"      
+
+- name: Remove undesirable packages
+  package:
+    name: "{{ unnecessary_software }}"
+    state: absent
+  when: ansible_os_family == "Debian"    
+
+- name: Stop and disable unnecessary services
+  service:
+    name: "{{ item }}"
+    state: stopped
+    enabled: no
+  with_items: "{{ unnecessary_services }}"
+  ignore_errors: yes
+
+- name: Set a message of the day
+  copy:
+    dest: /etc/motd
+    src: files/motd
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Set a login banner
+  copy:
+    dest: "{{ item }}"
+    src: files/issue
+    owner: root
+    group: root
+    mode: 0644
+  with_items:
+    - /etc/issue
+    - /etc/issue.net
+
+- name: set timezone
+  shell: timedatectl set-timezone America/Chicago
+
+- name: Enable cockpit
+  systemd:
+    name: cockpit
+    daemon_reload: yes
+    state: restarted
+    enabled: yes
+  when: ansible_os_family == "RedHat"    

ansible/roles/base/tasks/ssh.yml

@@ -0,0 +1,47 @@
+- name: Deploy SSH Key (administrator)
+  copy:
+    dest: /home/administrator/.ssh/authorized_keys
+    src: files/authorized_keys_administrator
+    force: true 
+
+- name: ensure ssh folder exists for user
+  file: 
+    path: /home/user/.ssh
+    state: directory
+
+- name: Deploy SSH Key (user)
+  copy:
+    dest: /home/user/.ssh/authorized_keys
+    src: files/authorized_keys_user
+    force: true 
+
+- name: Remove Root SSH Configuration
+  file: 
+    path: /root/.ssh
+    state: absent
+
+- name: Copy Secured SSHD Configuration
+  copy: 
+    src: files/sshd_config_secured 
+    dest: /etc/ssh/sshd_config 
+    owner: root 
+    group: root 
+    mode: "0644"
+  when: ansible_os_family == "Debian"   
+
+- name: Copy Secured SSHD Configuration
+  copy: 
+    src: files/sshd_config_secured_redhat 
+    dest: /etc/ssh/sshd_config 
+    owner: root 
+    group: root 
+    mode: "0644"    
+  when: ansible_os_family == "RedHat"   
+
+- name: Restart SSHD
+  systemd:
+    name: sshd
+    daemon_reload: yes
+    state: restarted
+    enabled: yes
+  ignore_errors: yes

ansible/roles/base/vars/main.yml

@@ -0,0 +1,25 @@
+---
+required_packages:
+    - ufw
+    - qemu-guest-agent
+    - fail2ban
+    - unattended-upgrades
+    - cockpit
+    - nfs-common
+    - open-iscsi
+
+redhat_required_packages:
+    - qemu-guest-agent
+    - cockpit     
+    - iscsi-initiator-utils 
+
+unnecessary_services:
+    - postfix
+    - telnet
+    
+unnecessary_software:
+    - tcpdump
+    - nmap-ncat
+    - wpa_supplicant    
+
+    

ansible/roles/cloudflare/tasks/main.yml

@@ -0,0 +1,11 @@
+---
+- name: Update Cloudflare
+  community.general.cloudflare_dns:
+    zone: "{{ item.zone }}"
+    record: "{{ item.record }}"
+    state: "{{ item.state }}"
+    type: A
+    proxied: "{{ item.proxied }}"
+    value: "{{ lookup('env','external_ip') }}"
+    api_token: "{{ lookup('env','cloudflareapi') }}"
+  with_items: "{{ DNS }}"     

ansible/roles/k3s/argocd/tasks/main.yml

@@ -0,0 +1,29 @@
+---
+- name: copy configs
+  copy: 
+    src: ./roles/k3s/argocd/templates/
+    dest: /opt/argocd
+    owner: administrator 
+    group: administrator 
+    mode: "0664"
+    force: yes 
+
+- name: copy configs
+  copy: 
+    src: "{{ lookup('env','kubeseal') }}"
+    dest: /opt/kubeseal.yaml
+    owner: administrator 
+    group: administrator 
+    mode: "0600"
+    force: yes 
+
+- name: Apply Kubeseal master key
+  command: k3s kubectl apply -f /opt/kubeseal.yaml --force
+
+- name: Apply ArgoCD
+  command: k3s kubectl apply -f /opt/argocd/argocd.yaml -n argocd
+
+- name: Apply ArgoCD Apps
+  command: k3s kubectl apply -f /opt/argocd/apps.yaml -n argocd
+
+  

ansible/roles/k3s/argocd/templates/apps.yaml

@@ -0,0 +1,22 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: argocd
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://github.com/DeveloperDurp/homelab.git
+    targetRevision: main
+    path: argocd
+    directory:
+      recurse: true
+  destination:
+    namespace: argocd
+    name: in-cluster
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true  
+    syncOptions:
+      - CreateNamespace=true 

ansible/roles/k3s/download/tasks/main.yml

@@ -0,0 +1,10 @@
+---
+- name: Download k3s binary x64
+  get_url:
+    url: https://github.com/k3s-io/k3s/releases/download/{{ k3s_version }}/k3s
+    checksum: sha256:https://github.com/k3s-io/k3s/releases/download/{{ k3s_version }}/sha256sum-amd64.txt
+    dest: /usr/local/bin/k3s
+    owner: root
+    group: root
+    mode: 0755
+  when: ansible_facts.architecture == "x86_64"

ansible/roles/k3s/master/defaults/main.yml

@@ -0,0 +1,12 @@
+---
+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('') }}

ansible/roles/k3s/master/tasks/main.yml

@@ -0,0 +1,197 @@
+---
+- 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']
+
+# these will be copied and installed now, then tested later and apply config
+- 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 namespace 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']
+
+- name: Init cluster inside the transient k3s-init service
+  command:
+    cmd: "systemd-run -p RestartSec=2 \
+                      -p Restart=on-failure \
+                      --unit=k3s-init \
+                      k3s server {{ server_init_args }}"
+    creates: "{{ systemd_dir }}/k3s.service"
+  args:
+    warn: false  # The ansible systemd module does not support transient units
+
+- name: Verification
+  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)
+      retries: "{{ retry_count | default(20) }}"
+      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
+        state: stopped
+      failed_when: false
+  when: not ansible_check_mode
+
+- name: Copy K3s service file
+  register: k3s_service
+  template:
+    src: "k3s.service.j2"
+    dest: "{{ systemd_dir }}/k3s.service"
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Enable and check K3s service
+  systemd:
+    name: k3s
+    daemon_reload: yes
+    state: restarted
+    enabled: yes
+
+- name: Wait for node-token
+  wait_for:
+    path: /var/lib/rancher/k3s/server/node-token
+
+- name: Register node-token file access mode
+  stat:
+    path: /var/lib/rancher/k3s/server
+  register: p
+
+- name: Change file access node-token
+  file:
+    path: /var/lib/rancher/k3s/server
+    mode: "g+rx,o+rx"
+
+- name: Read node-token from master
+  slurp:
+    src: /var/lib/rancher/k3s/server/node-token
+  register: node_token
+
+- name: Store Master node-token
+  set_fact:
+    token: "{{ node_token.content | b64decode | regex_replace('\n', '') }}"
+
+- name: Restore node-token file access
+  file:
+    path: /var/lib/rancher/k3s/server
+    mode: "{{ p.stat.mode }}"
+
+- name: Create directory .kube
+  file:
+    path: ~{{ item }}/.kube
+    state: directory
+    owner: "{{ item }}"
+    mode: "u=rwx,g=rx,o="
+  loop:
+    - "{{ ansible_user }}"
+    - "{{ username }}"    
+
+- name: Copy config file to user home directory
+  copy:
+    src: /etc/rancher/k3s/k3s.yaml
+    dest: ~{{ item }}/.kube/config
+    remote_src: yes
+    owner: "{{ item }}"
+    mode: "u=rw,g=,o="
+  loop:
+    - "{{ ansible_user }}"
+    - "{{ username }}"
+
+- name: Configure kubectl cluster to {{ endpoint_url }}
+  command: >-
+    k3s kubectl config set-cluster default
+      --server={{ endpoint_url }}
+      --kubeconfig ~{{ item }}/.kube/config
+  changed_when: true
+  loop:
+    - "{{ ansible_user }}"
+    - "{{ username }}"  
+  vars:
+    endpoint_url: >-
+      https://{{ apiserver_endpoint | ansible.utils.ipwrap }}:6443
+  # Deactivated linter rules:
+  #   - jinja[invalid]: As of version 6.6.0, ansible-lint complains that the input to ipwrap
+  #                     would be undefined. This will not be the case during playbook execution.
+  # noqa jinja[invalid]
+
+- name: Create kubectl symlink
+  file:
+    src: /usr/local/bin/k3s
+    dest: /usr/local/bin/kubectl
+    state: link
+
+- name: Create crictl symlink
+  file:
+    src: /usr/local/bin/k3s
+    dest: /usr/local/bin/crictl
+    state: link
+
+- name: Get contents of manifests folder
+  find:
+    paths: /var/lib/rancher/k3s/server/manifests
+    file_type: file
+  register: k3s_server_manifests
+
+- name: Get sub dirs of manifests folder
+  find:
+    paths: /var/lib/rancher/k3s/server/manifests
+    file_type: directory
+  register: k3s_server_manifests_directories
+
+- name: Remove manifests and folders that are only needed for bootstrapping cluster so k3s doesn't auto apply on start
+  file:
+    path: "{{ item.path }}"
+    state: absent
+  with_items:
+    - "{{ k3s_server_manifests.files }}"
+    - "{{ k3s_server_manifests_directories.files }}"
+  loop_control:
+    label: "{{ item.path }}"
+        

ansible/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 }}

ansible/roles/k3s/master/templates/k3s.service.j2

@@ -0,0 +1,24 @@
+[Unit]
+Description=Lightweight Kubernetes
+Documentation=https://k3s.io
+After=network-online.target
+
+[Service]
+Type=notify
+ExecStartPre=-/sbin/modprobe br_netfilter
+ExecStartPre=-/sbin/modprobe overlay
+ExecStart=/usr/local/bin/k3s server {{ extra_server_args | default("") }}
+KillMode=process
+Delegate=yes
+# Having non-zero Limit*s causes performance problems due to accounting overhead
+# in the kernel. We recommend using cgroups to do container-local accounting.
+LimitNOFILE=1048576
+LimitNPROC=infinity
+LimitCORE=infinity
+TasksMax=infinity
+TimeoutStartSec=0
+Restart=always
+RestartSec=5s
+
+[Install]
+WantedBy=multi-user.target

ansible/roles/k3s/master/templates/metallb.configmap.j2

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: metallb-system
+  name: config
+data:
+  config: |
+    address-pools:
+    - name: default
+      protocol: layer2
+      addresses:
+      - {{ metal_lb_ip_range }}

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

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

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

@@ -0,0 +1,32 @@
+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

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

@@ -0,0 +1,77 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: kube-vip-ds
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      name: kube-vip-ds
+  template:
+    metadata:
+      labels:
+        name: kube-vip-ds
+    spec:
+      affinity:
+        nodeAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            nodeSelectorTerms:
+            - matchExpressions:
+              - key: node-role.kubernetes.io/master
+                operator: Exists
+            - matchExpressions:
+              - key: node-role.kubernetes.io/control-plane
+                operator: Exists
+      containers:
+      - args:
+        - manager
+        env:
+        - name: vip_arp
+          value: "true"
+        - name: port
+          value: "6443"
+        - name: vip_interface
+          value: {{ flannel_iface }}
+        - name: vip_cidr
+          value: "{{ apiserver_endpoint | ansible.utils.ipsubnet | ansible.utils.ipaddr('prefix') }}"
+        - name: cp_enable
+          value: "true"
+        - name: cp_namespace
+          value: kube-system
+        - name: vip_ddns
+          value: "false"
+        - name: svc_enable
+          value: "false"
+        - name: vip_leaderelection
+          value: "true"
+        - name: vip_leaseduration
+          value: "15"
+        - name: vip_renewdeadline
+          value: "10"
+        - name: vip_retryperiod
+          value: "2"
+        - name: address
+          value: {{ apiserver_endpoint }}
+        image: ghcr.io/kube-vip/kube-vip:{{ kube_vip_tag_version }}
+        imagePullPolicy: Always
+        name: kube-vip
+        resources: {}
+        securityContext:
+          capabilities:
+            add:
+            - NET_ADMIN
+            - NET_RAW
+            - SYS_TIME
+      hostNetwork: true
+      serviceAccountName: kube-vip
+      tolerations:
+      - effect: NoSchedule
+        operator: Exists
+      - effect: NoExecute
+        operator: Exists
+  updateStrategy: {}
+status:
+  currentNumberScheduled: 0
+  desiredNumberScheduled: 0
+  numberMisscheduled: 0
+  numberReady: 0

ansible/roles/k3s/node/tasks/main.yml

@@ -0,0 +1,16 @@
+---
+
+- name: Copy K3s service file
+  template:
+    src: "k3s.service.j2"
+    dest: "{{ systemd_dir }}/k3s-node.service"
+    owner: root
+    group: root
+    mode: 0755
+
+- name: Enable and check K3s service
+  systemd:
+    name: k3s-node
+    daemon_reload: yes
+    state: restarted
+    enabled: yes

ansible/roles/k3s/node/templates/k3s.service.j2

@@ -0,0 +1,24 @@
+[Unit]
+Description=Lightweight Kubernetes
+Documentation=https://k3s.io
+After=network-online.target
+
+[Service]
+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("") }}
+KillMode=process
+Delegate=yes
+# Having non-zero Limit*s causes performance problems due to accounting overhead
+# in the kernel. We recommend using cgroups to do container-local accounting.
+LimitNOFILE=1048576
+LimitNPROC=infinity
+LimitCORE=infinity
+TasksMax=infinity
+TimeoutStartSec=0
+Restart=always
+RestartSec=5s
+
+[Install]
+WantedBy=multi-user.target

ansible/roles/k3s/post/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+# Timeout to wait for MetalLB services to come up
+metal_lb_available_timeout: 120s

ansible/roles/k3s/post/tasks/main.yml

@@ -0,0 +1,94 @@
+---
+- name: Create manifests directory for temp configuration
+  file:
+    path: /tmp/k3s
+    state: directory
+    owner: "{{ ansible_user }}"
+    mode: 0755
+  with_items: "{{ groups['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 }}"
+    mode: 0755
+  with_items: "{{ groups['master'] }}"
+  run_once: true
+
+- name: Test metallb-system namespace
+  command: >-
+    k3s kubectl -n metallb-system
+  changed_when: false
+  with_items: "{{ groups['master'] }}"
+  run_once: true
+
+- name: Wait for MetalLB resources
+  command: >-
+    k3s kubectl wait {{ item.resource }}
+    --namespace='metallb-system'
+    {% if item.name | default(False) -%}{{ item.name }}{%- endif %}
+    {% if item.selector | default(False) -%}--selector='{{ item.selector }}'{%- endif %}
+    {% if item.condition | default(False) -%}{{ item.condition }}{%- endif %}
+    --timeout='{{ metal_lb_available_timeout }}'
+  changed_when: false
+  run_once: true
+  with_items:
+    - description: controller
+      resource: deployment
+      name: controller
+      condition: --for condition=Available=True
+    - description: webhook service
+      resource: pod
+      selector: component=controller
+      condition: --for=jsonpath='{.status.phase}'=Running
+    - description: pods in replica sets
+      resource: pod
+      selector: component=controller,app=metallb
+      condition: --for condition=Ready
+    - description: ready replicas of controller
+      resource: replicaset
+      selector: component=controller,app=metallb
+      condition: --for=jsonpath='{.status.readyReplicas}'=1
+    - description: fully labeled replicas of controller
+      resource: replicaset
+      selector: component=controller,app=metallb
+      condition: --for=jsonpath='{.status.fullyLabeledReplicas}'=1
+    - description: available replicas of controller
+      resource: replicaset
+      selector: component=controller,app=metallb
+      condition: --for=jsonpath='{.status.availableReplicas}'=1
+  loop_control:
+    label: "{{ item.description }}"
+
+- name: Test metallb-system webhook-service endpoint
+  command: >-
+    k3s kubectl -n metallb-system get endpoints webhook-service
+  changed_when: false
+  with_items: "{{ groups['master'] }}"
+  run_once: true
+
+- name: Apply metallb CRs
+  command: >-
+    k3s kubectl apply -f /tmp/k3s/metallb-crs.yaml
+    --timeout='{{ metal_lb_available_timeout }}'
+  register: this
+  changed_when: false
+  run_once: true
+  until: this.rc == 0
+  retries: 5
+
+- name: Test metallb-system resources
+  command: >-
+    k3s kubectl -n metallb-system get {{ item }}
+  changed_when: false
+  run_once: true
+  with_items:
+    - IPAddressPool
+    - L2Advertisement
+
+- name: Remove tmp directory used for manifests
+  file:
+    path: /tmp/k3s
+    state: absent

ansible/roles/k3s/post/templates/metallb.crs.j2

@@ -0,0 +1,21 @@
+apiVersion: metallb.io/v1beta1
+kind: IPAddressPool
+metadata:
+  name: first-pool
+  namespace: metallb-system
+spec:
+  addresses:
+{% if metal_lb_ip_range is string %}
+{# metal_lb_ip_range was used in the legacy way: single string instead of a list #}
+{#   => transform to list with single element #}
+{% set metal_lb_ip_range = [metal_lb_ip_range] %}
+{% endif %}
+{% for range in metal_lb_ip_range %}
+  - {{ range }}
+{% endfor %}
+---
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: default
+  namespace: metallb-system

ansible/roles/k3s/prereq/tasks/main.yml

@@ -0,0 +1,65 @@
+---
+- name: Set same timezone on every Server
+  timezone:
+    name: "{{ system_timezone }}"
+  when: (system_timezone is defined) and (system_timezone != "Your/Timezone")
+
+- name: Set SELinux to disabled state
+  selinux:
+    state: disabled
+  when: ansible_os_family == "RedHat"
+
+- name: Enable IPv4 forwarding
+  sysctl:
+    name: net.ipv4.ip_forward
+    value: "1"
+    state: present
+    reload: yes
+
+- name: Enable IPv6 forwarding
+  sysctl:
+    name: net.ipv6.conf.all.forwarding
+    value: "1"
+    state: present
+    reload: yes
+
+- name: Enable IPv6 router advertisements
+  sysctl:
+    name: net.ipv6.conf.all.accept_ra
+    value: "2"
+    state: present
+    reload: yes
+
+- name: Add br_netfilter to /etc/modules-load.d/
+  copy:
+    content: "br_netfilter"
+    dest: /etc/modules-load.d/br_netfilter.conf
+    mode: "u=rw,g=,o="
+  when: ansible_os_family == "RedHat"
+
+- name: Load br_netfilter
+  modprobe:
+    name: br_netfilter
+    state: present
+  when: ansible_os_family == "RedHat"
+
+- name: Set bridge-nf-call-iptables (just to be sure)
+  sysctl:
+    name: "{{ item }}"
+    value: "1"
+    state: present
+    reload: yes
+  when: ansible_os_family == "RedHat"
+  loop:
+    - net.bridge.bridge-nf-call-iptables
+    - net.bridge.bridge-nf-call-ip6tables
+
+- name: Add /usr/local/bin to sudo secure_path
+  lineinfile:
+    line: 'Defaults    secure_path = /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin'
+    regexp: "Defaults(\\s)*secure_path(\\s)*="
+    state: present
+    insertafter: EOF
+    path: /etc/sudoers
+    validate: 'visudo -cf %s'
+  when: ansible_os_family == "RedHat"

ansible/roles/update/tasks/main.yml

@@ -0,0 +1,39 @@
+- name: check packages for updates
+  shell: yum list updates | awk 'f;/Updated Packages/{f=1;}' | awk '{ print $1 }'
+  changed_when: updates.stdout_lines | length > 0
+  args:
+    warn: false
+  register: updates
+- name: display count
+  debug:
+    msg: "Found {{ updates.stdout_lines | length }} packages to be updated:\n\n{{ updates.stdout }}"
+- when: updates.stdout_lines | length > 0
+  block:
+    - name: install updates using yum
+      yum:
+        name: "*"
+        state: latest
+    - name: install yum-utils
+      package:
+        name: yum-utils
+    - name: check if reboot is required
+      shell: needs-restarting -r
+      failed_when: false
+      register: reboot_required
+      changed_when: false
+- when: updates.stdout_lines | length > 0 and reboot_required.rc != 0
+  block:
+    - name: reboot the server if required
+      shell: sleep 3; reboot
+      ignore_errors: true
+      changed_when: false
+      async: 1
+      poll: 0
+    - name: wait for server to come back after reboot
+      wait_for_connection:
+        timeout: 600
+        delay: 20
+      register: reboot_result
+    - name: reboot time
+      debug:
+        msg: "The system rebooted in {{ reboot_result.elapsed }} seconds."