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ansible/playbooks/roles/haproxy/tasks/certbot-cloudflare.yml

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+---
+# ansible/roles/haproxy/tasks/certbot-cloudflare.yml
+
+- name: Install Certbot and Cloudflare DNS plugin
+  ansible.builtin.package:
+    name:
+      - certbot
+      - python3-certbot-dns-cloudflare
+    state: present
+
+- name: Create Let's Encrypt configuration directory
+  ansible.builtin.file:
+    path: /etc/letsencrypt
+    state: directory
+    owner: root
+    group: root
+    mode: '0755'
+
+- name: Create Cloudflare credentials file
+  ansible.builtin.template:
+    src: cloudflare-credentials.ini.j2
+    dest: "{{ haproxy_certbot_cloudflare_credentials_file }}"
+    owner: root
+    group: root
+    mode: '0600'
+  no_log: true
+
+- name: Create Certbot post-renewal hook script
+  ansible.builtin.template:
+    src: certbot-post-hook.sh.j2
+    dest: "{{ haproxy_certbot_post_hook }}"
+    owner: root
+    group: root
+    mode: '0755'
+
+- name: Create Certbot renewal hooks directory
+  ansible.builtin.file:
+    path: /etc/letsencrypt/renewal-hooks/deploy
+    state: directory
+    mode: '0755'
+
+- name: Link post-hook to renewal hooks directory
+  ansible.builtin.file:
+    src: "{{ haproxy_certbot_post_hook }}"
+    dest: /etc/letsencrypt/renewal-hooks/deploy/haproxy-reload.sh
+    state: link
+    force: true
+
+- name: Check for existing certificates
+  ansible.builtin.stat:
+    path: "{{ haproxy_certbot_cert_dir }}/{{ item.domain | regex_replace('\\*\\.', '') }}"
+  register: existing_certs
+  loop: "{{ haproxy_certbot_domains }}"
+  loop_control:
+    label: "{{ item.domain }}"
+
+- name: Build certificate request commands
+  ansible.builtin.set_fact:
+    certbot_commands: "{{ certbot_commands | default([]) + [command_item] }}"
+  vars:
+    cert_name: "{{ item.item.domain | regex_replace('\\*\\.', '') }}"
+    domain_list: >-
+      {{ [item.item.domain] + 
+         (item.item.include_base | default(false) | ternary(
+           [item.item.domain | regex_replace('\\*\\.', '')], 
+           []
+         ))
+      }}
+    command_item:
+      domain: "{{ item.item.domain }}"
+      cert_name: "{{ cert_name }}"
+      domains: "{{ domain_list }}"
+      exists: "{{ item.stat.exists }}"
+  loop: "{{ existing_certs.results }}"
+  loop_control:
+    label: "{{ item.item.domain }}"
+
+- name: Display certificate request plan
+  ansible.builtin.debug:
+    msg: |
+      Will request certificates for:
+      {% for cmd in certbot_commands %}
+      - {{ cmd.cert_name }} ({{ cmd.domains | join(', ') }}) - {{ 'EXISTS' if cmd.exists else 'NEW' }}
+      {% endfor %}
+
+- name: Request certificates from Let's Encrypt via Cloudflare DNS
+  ansible.builtin.command: >
+    certbot certonly
+    --non-interactive
+    --agree-tos
+    --email {{ haproxy_certbot_email }}
+    --dns-cloudflare
+    --dns-cloudflare-credentials {{ haproxy_certbot_cloudflare_credentials_file }}
+    --dns-cloudflare-propagation-seconds {{ haproxy_certbot_dns_propagation_seconds }}
+    --cert-name {{ item.cert_name }}
+    {% for domain in item.domains %}
+    --domain {{ domain }}
+    {% endfor %}
+    {% if haproxy_certbot_staging %}
+    --staging
+    {% endif %}
+    --deploy-hook {{ haproxy_certbot_post_hook }}
+  loop: "{{ certbot_commands }}"
+  loop_control:
+    label: "{{ item.cert_name }}"
+  when: not item.exists
+  register: certbot_result
+  failed_when:
+    - certbot_result.rc != 0
+    - "'Certificate not yet due for renewal' not in certbot_result.stdout"
+    - "'too many certificates already issued' not in certbot_result.stderr"
+
+- name: Display certificate request results
+  ansible.builtin.debug:
+    msg: "Certificate for {{ item.item.cert_name }}: {{ 'SUCCESS' if item.rc == 0 else 'SKIPPED/FAILED' }}"
+  loop: "{{ certbot_result.results }}"
+  loop_control:
+    label: "{{ item.item.cert_name }}"
+  when: certbot_result.results is defined
+
+- name: Run post-hook to combine certificates for HAProxy
+  ansible.builtin.command: "{{ haproxy_certbot_post_hook }}"
+  changed_when: true
+  when: certbot_result.changed
+
+- name: Setup automatic certificate renewal via cron
+  ansible.builtin.cron:
+    name: "Certbot certificate renewal"
+    minute: "{{ haproxy_certbot_renewal_cron_minute }}"
+    hour: "{{ haproxy_certbot_renewal_cron_hour }}"
+    day: "{{ haproxy_certbot_renewal_cron_day }}"
+    job: "/usr/bin/certbot renew --quiet --deploy-hook {{ haproxy_certbot_post_hook }} 2>&1 | logger -t certbot"
+    user: root
+    state: present
+
+- name: Create systemd timer for certificate renewal (alternative to cron)
+  when: ansible_service_mgr == "systemd"
+  block:
+    - name: Create certbot renewal service
+      ansible.builtin.copy:
+        content: |
+          [Unit]
+          Description=Certbot Renewal
+          After=network-online.target
+          Wants=network-online.target
+
+          [Service]
+          Type=oneshot
+          ExecStart=/usr/bin/certbot renew --quiet --deploy-hook {{ haproxy_certbot_post_hook }}
+          StandardOutput=journal
+          StandardError=journal
+        dest: /etc/systemd/system/certbot-renewal.service
+        mode: '0644'
+
+    - name: Create certbot renewal timer
+      ansible.builtin.copy:
+        content: |
+          [Unit]
+          Description=Certbot Renewal Timer
+
+          [Timer]
+          OnCalendar=daily
+          RandomizedDelaySec=1h
+          Persistent=true
+
+          [Install]
+          WantedBy=timers.target
+        dest: /etc/systemd/system/certbot-renewal.timer
+        mode: '0644'
+
+    - name: Enable and start certbot renewal timer
+      ansible.builtin.systemd:
+        name: certbot-renewal.timer
+        enabled: true
+        state: started
+        daemon_reload: true
+
+- name: Test certificate renewal (dry-run)
+  ansible.builtin.command: certbot renew --dry-run --dns-cloudflare --dns-cloudflare-credentials {{ haproxy_certbot_cloudflare_credentials_file }}
+  register: renewal_test
+  changed_when: false
+  failed_when: false
+
+- name: Display renewal test results
+  ansible.builtin.debug:
+    msg: |
+      Certificate renewal dry-run: {{ 'SUCCESS ✓' if renewal_test.rc == 0 else 'FAILED ✗' }}
+
+      {% if renewal_test.rc == 0 %}
+      Your certificates will renew automatically.
+      {% else %}
+      Please check the output above for errors.
+      {% endif %}
+
+- name: List all certificates
+  ansible.builtin.command: certbot certificates
+  register: cert_list
+  changed_when: false
+
+- name: Display certificate information
+  ansible.builtin.debug:
+    msg: "{{ cert_list.stdout_lines }}"

ansible/playbooks/roles/haproxy/tasks/certificates.yml

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+---
+# ansible/roles/haproxy/tasks/certificates.yml
+
+- name: Check if default certificate exists
+  ansible.builtin.stat:
+    path: "{{ haproxy_ssl_default_crt }}"
+  register: default_cert
+
+- name: Generate self-signed certificate for development
+  when: not default_cert.stat.exists
+  block:
+    - name: Generate private key
+      openssl_privatekey:
+        path: "{{ haproxy_ssl_cert_dir }}/default.key"
+        size: 2048
+        mode: '0600'
+        owner: "{{ haproxy_user }}"
+        group: "{{ haproxy_group }}"
+
+    - name: Generate certificate signing request
+      openssl_csr:
+        path: "{{ haproxy_ssl_cert_dir }}/default.csr"
+        privatekey_path: "{{ haproxy_ssl_cert_dir }}/default.key"
+        common_name: "lightning-lane.local.mk-labs.cloud"
+        subject_alt_name:
+          - "DNS:lightning-lane.local.mk-labs.cloud"
+          - "DNS:*.local.mk-labs.cloud"
+        owner: "{{ haproxy_user }}"
+        group: "{{ haproxy_group }}"
+
+    - name: Generate self-signed certificate
+      openssl_certificate:
+        path: "{{ haproxy_ssl_cert_dir }}/default.crt"
+        privatekey_path: "{{ haproxy_ssl_cert_dir }}/default.key"
+        csr_path: "{{ haproxy_ssl_cert_dir }}/default.csr"
+        provider: selfsigned
+        selfsigned_not_after: "+3650d"
+        owner: "{{ haproxy_user }}"
+        group: "{{ haproxy_group }}"
+
+    - name: Combine certificate and key for HAProxy
+      ansible.builtin.shell: |
+        cat {{ haproxy_ssl_cert_dir }}/default.crt \
+            {{ haproxy_ssl_cert_dir }}/default.key \
+            > {{ haproxy_ssl_default_crt }}
+      args:
+        creates: "{{ haproxy_ssl_default_crt }}"
+
+    - name: Set permissions on combined certificate
+      ansible.builtin.file:
+        path: "{{ haproxy_ssl_default_crt }}"
+        owner: "{{ haproxy_user }}"
+        group: "{{ haproxy_group }}"
+        mode: '0600'
+
+- name: Create certificate directory structure
+  ansible.builtin.file:
+    path: "{{ haproxy_ssl_cert_dir }}/{{ item }}"
+    state: directory
+    owner: "{{ haproxy_user }}"
+    group: "{{ haproxy_group }}"
+    mode: '0755'
+  loop:
+    - live
+    - archive
+
+- name: Deploy additional certificates
+  when: haproxy_ssl_certificates is defined
+  block:
+    - name: Copy certificate files
+      ansible.builtin.copy:
+        src: "{{ item.src }}"
+        dest: "{{ haproxy_ssl_cert_dir }}/live/{{ item.name }}.pem"
+        owner: "{{ haproxy_user }}"
+        group: "{{ haproxy_group }}"
+        mode: '0600'
+      loop: "{{ haproxy_ssl_certificates }}"
+      notify: Reload haproxy

ansible/playbooks/roles/haproxy/tasks/configure.yml

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+---
+# ansible/roles/haproxy/tasks/configure.yml
+
+- name: Fetch services from NetBox
+  when: haproxy_netbox_integration
+  block:
+    - name: Query NetBox for service configurations
+      ansible.builtin.uri:
+        url: "{{ haproxy_netbox_url }}/api/ipam/services/"
+        method: GET
+        headers:
+          Authorization: "Token {{ haproxy_netbox_token }}"
+          Accept: "application/json"
+        return_content: true
+      register: netbox_services
+      changed_when: false
+
+    - name: Parse NetBox services
+      ansible.builtin.set_fact:
+        haproxy_frontends: "{{ haproxy_frontends | default([]) + netbox_parsed_frontends }}"
+        haproxy_backends: "{{ haproxy_backends | default([]) + netbox_parsed_backends }}"
+      vars:
+        netbox_parsed_frontends: "{{ netbox_services.json.results | map(attribute='custom_fields') | list }}"
+        netbox_parsed_backends: "{{ netbox_services.json.results | map(attribute='custom_fields') | list }}"
+      when: netbox_services.json.results is defined
+
+- name: Generate HAProxy main configuration
+  ansible.builtin.template:
+    src: haproxy.cfg.j2
+    dest: "{{ haproxy_config_dir }}/haproxy.cfg"
+    owner: root
+    group: root
+    mode: '0644'
+    backup: true
+    validate: 'haproxy -c -f %s'
+  notify: reload haproxy
+
+- name: Configure rsyslog for HAProxy
+  when: haproxy_rsyslog_config
+  block:
+    - name: Create rsyslog configuration for HAProxy
+      ansible.builtin.copy:
+        content: |
+          # HAProxy logging configuration
+          $ModLoad imudp
+          $UDPServerRun 514
+
+          # Create separate log files for HAProxy
+          local0.* {{ haproxy_log_dir }}/haproxy.log
+          local0.info {{ haproxy_log_dir }}/haproxy-info.log
+          local0.notice {{ haproxy_log_dir }}/haproxy-notice.log
+          local0.err {{ haproxy_log_dir }}/haproxy-error.log
+
+          # Stop processing HAProxy logs
+          & stop
+        dest: /etc/rsyslog.d/49-haproxy.conf
+        mode: '0644'
+      notify: restart rsyslog
+
+- name: Configure logrotate for HAProxy
+  when: haproxy_log_rotation
+  ansible.builtin.template:
+    src: logrotate.j2
+    dest: /etc/logrotate.d/haproxy
+    mode: '0644'
+
+- name: Create HAProxy systemd override directory
+  ansible.builtin.file:
+    path: /etc/systemd/system/haproxy.service.d
+    state: directory
+    mode: '0755'
+
+- name: Configure HAProxy systemd service overrides
+  ansible.builtin.copy:
+    content: |
+      [Service]
+      # Increase file descriptor limits
+      LimitNOFILE=65536
+
+      # Runtime directory
+      RuntimeDirectory=haproxy
+      RuntimeDirectoryMode=0755
+
+      # Security hardening
+      NoNewPrivileges=true
+      ProtectSystem=strict
+      ProtectHome=true
+      PrivateTmp=true
+      ReadWritePaths={{ haproxy_log_dir }}
+    dest: /etc/systemd/system/haproxy.service.d/override.conf
+    mode: '0644'
+  notify:
+    - Reload systemd
+    - Restart haproxy

ansible/playbooks/roles/haproxy/tasks/install.yml

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+---
+# ansible/roles/haproxy/tasks/install.yml
+
+- name: Install HAProxy repository (Ubuntu)
+  when: ansible_os_family == "Debian"
+  block:
+    - name: Add HAProxy PPA
+      ansible.builtin.apt_repository:
+        repo: "ppa:vbernat/haproxy-{{ haproxy_version }}"
+        state: present
+        update_cache: true
+
+    - name: Install HAProxy
+      ansible.builtin.apt:
+        name: haproxy
+        state: present
+        update_cache: true
+
+- name: Install HAProxy (Fedora/RHEL)
+  when: ansible_os_family == "RedHat"
+  block:
+    - name: Install HAProxy
+      ansible.builtin.dnf:
+        name: haproxy
+        state: present
+
+- name: Install additional packages
+  ansible.builtin.package:
+    name:
+      - rsyslog
+      - logrotate
+      - socat  # For HAProxy socket communication
+    state: present
+
+- name: Create HAProxy system user
+  ansible.builtin.user:
+    name: "{{ haproxy_user }}"
+    group: "{{ haproxy_group }}"
+    system: true
+    shell: /usr/sbin/nologin
+    home: "{{ haproxy_chroot_dir }}"
+    create_home: true
+
+- name: Create required directories
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: directory
+    owner: "{{ haproxy_user }}"
+    group: "{{ haproxy_group }}"
+    mode: '0755'
+  loop:
+    - "{{ haproxy_config_dir }}"
+    - "{{ haproxy_ssl_cert_dir }}"
+    - "{{ haproxy_log_dir }}"
+    - "{{ haproxy_chroot_dir }}"
+    - /var/lib/haproxy/dev
+
+- name: Create HAProxy socket directory
+  ansible.builtin.file:
+    path: /run/haproxy
+    state: directory
+    owner: "{{ haproxy_user }}"
+    group: "{{ haproxy_group }}"
+    mode: '0755'
+
+- name: Configure firewall rules
+  when: haproxy_configure_firewall
+  block:
+    - name: Open HAProxy ports (UFW)
+      when: ansible_os_family == "Debian"
+      community.general.ufw:
+        rule: allow
+        port: "{{ item.split('/')[0] }}"
+        proto: "{{ item.split('/')[1] }}"
+      loop: "{{ haproxy_firewall_allowed_ports }}"
+
+    - name: Open HAProxy ports (firewalld)
+      when: ansible_os_family == "RedHat"
+      ansible.posix.firewalld:
+        port: "{{ item }}"
+        permanent: true
+        state: enabled
+        immediate: true
+      loop: "{{ haproxy_firewall_allowed_ports }}"
+
+- name: Install Prometheus HAProxy exporter
+  when: haproxy_prometheus_exporter
+  block:
+    - name: Download HAProxy exporter
+      ansible.builtin.get_url:
+        url: "https://github.com/prometheus/haproxy_exporter/releases/download/v0.15.0/haproxy_exporter-0.15.0.linux-amd64.tar.gz"
+        dest: /tmp/haproxy_exporter.tar.gz
+        mode: '0644'
+
+    - name: Extract HAProxy exporter
+      ansible.builtin.unarchive:
+        src: /tmp/haproxy_exporter.tar.gz
+        dest: /usr/local/bin/
+        remote_src: true
+        extra_opts:
+          - --strip-components=1
+          - --wildcards
+          - '*/haproxy_exporter'
+
+    - name: Create HAProxy exporter systemd service
+      ansible.builtin.copy:
+        content: |
+          [Unit]
+          Description=HAProxy Exporter
+          After=network.target
+
+          [Service]
+          Type=simple
+          User={{ haproxy_user }}
+          ExecStart=/usr/local/bin/haproxy_exporter --haproxy.scrape-uri=unix:/run/haproxy/admin.sock
+          Restart=on-failure
+
+          [Install]
+          WantedBy=multi-user.target
+        dest: /etc/systemd/system/haproxy-exporter.service
+        mode: '0644'
+
+    - name: Enable and start HAProxy exporter
+      ansible.builtin.systemd:
+        name: haproxy-exporter
+        state: started
+        enabled: true
+        daemon_reload: true

ansible/playbooks/roles/haproxy/tasks/main.yml

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+---
+# ansible/roles/haproxy/tasks/main.yml
+
+# - name: Include OS-specific variables
+#   include_vars: "{{ ansible_os_family }}.yml"
+#   tags: [haproxy, always]
+
+- name: Include installation tasks
+  ansible.builtin.include_tasks: install.yml
+  tags: [haproxy, install]
+
+- name: Include Certbot with Cloudflare DNS tasks
+  ansible.builtin.include_tasks: certbot-cloudflare.yml
+  when:
+    - haproxy_certbot_enable
+    - haproxy_certbot_challenge_method == "dns-cloudflare"
+  tags: [haproxy, certificates, certbot, cloudflare]
+
+- name: Include fallback self-signed certificate tasks
+  ansible.builtin.include_tasks: certificates.yml
+  when:
+    - not haproxy_certbot_enable
+    - haproxy_certbot_fallback_selfsigned | default(false)
+  tags: [haproxy, certificates, selfsigned]
+
+- name: Include configuration tasks
+  ansible.builtin.include_tasks: configure.yml
+  tags: [haproxy, configure]
+
+- name: Include validation tasks
+  ansible.builtin.include_tasks: validate.yml
+  tags: [haproxy, validate]
+
+- name: Ensure HAProxy is started and enabled
+  ansible.builtin.systemd:
+    name: haproxy
+    state: started
+    enabled: true
+    daemon_reload: true
+  tags: [haproxy, service]

ansible/playbooks/roles/haproxy/tasks/validate.yml

@@ -0,0 +1,47 @@
+---
+# ansible/roles/haproxy/tasks/validate.yml
+
+- name: Validate HAProxy configuration syntax
+  command: haproxy -c -f {{ haproxy_config_dir }}/haproxy.cfg
+  register: haproxy_validation
+  changed_when: false
+  failed_when: haproxy_validation.rc != 0
+
+- name: Display validation results
+  debug:
+    msg: "{{ haproxy_validation.stdout_lines }}"
+  when: haproxy_validation.stdout_lines is defined
+
+- name: Check HAProxy service status
+  systemd:
+    name: haproxy
+    state: started
+  register: haproxy_status
+  changed_when: false
+
+- name: Verify HAProxy is listening on configured ports
+  wait_for:
+    host: "{{ ansible_default_ipv4.address }}"
+    port: "{{ item }}"
+    timeout: 10
+  loop:
+    - 80
+    - 443
+    - "{{ haproxy_stats_port }}"
+  when: haproxy_status.status.ActiveState == "active"
+
+- name: Test stats interface accessibility
+  uri:
+    url: "http://localhost:{{ haproxy_stats_port }}{{ haproxy_stats_uri }}"
+    user: "{{ haproxy_stats_username }}"
+    password: "{{ haproxy_stats_password }}"
+    force_basic_auth: true
+    status_code: 200
+  register: stats_test
+  changed_when: false
+  failed_when: false
+
+- name: Display stats interface status
+  debug:
+    msg: "Stats interface is {{ 'accessible' if stats_test.status == 200 else 'not accessible' }}"
+