personal_infra/ansible/services/bitcoin-knots/deploy_bitcoin_knots_playbook.yml

- name: Build and Deploy Bitcoin Knots from Source
  hosts: knots_box_local
  become: yes
  vars_files:
    - ../../infra_vars.yml
    - ../../services_config.yml
    - ../../infra_secrets.yml
    - ./bitcoin_knots_vars.yml
  vars:
    bitcoin_repo_url: "https://github.com/bitcoinknots/bitcoin.git"
    bitcoin_sigs_base_url: "https://raw.githubusercontent.com/bitcoinknots/guix.sigs/knots"
    bitcoin_version_major: "{{ bitcoin_knots_version_short | regex_replace('^(\\d+)\\..*', '\\1') }}"
    bitcoin_source_tarball_url: "https://bitcoinknots.org/files/{{ bitcoin_version_major }}.x/{{ bitcoin_knots_version_short }}/bitcoin-{{ bitcoin_knots_version_short }}.tar.gz"
    uptime_kuma_api_url: "https://{{ subdomains.uptime_kuma }}.{{ root_domain }}"

  tasks:
    - name: Calculate 90% of system RAM for dbcache
      set_fact:
        bitcoin_dbcache_mb: "{{ (ansible_memtotal_mb | float * 0.9) | int }}"
      changed_when: false

    - name: Display calculated dbcache value
      debug:
        msg: "Setting dbcache to {{ bitcoin_dbcache_mb }} MB (90% of {{ ansible_memtotal_mb }} MB total RAM)"


    - name: Install build dependencies
      apt:
        name:
          - build-essential
          - libtool
          - autotools-dev
          - automake
          - pkg-config
          - bsdmainutils
          - python3
          - python3-pip
          - libevent-dev
          - libboost-system-dev
          - libboost-filesystem-dev
          - libboost-test-dev
          - libboost-thread-dev
          - libboost-chrono-dev
          - libboost-program-options-dev
          - libboost-dev
          - libssl-dev
          - libdb-dev
          - libminiupnpc-dev
          - libzmq3-dev
          - libnatpmp-dev
          - libsqlite3-dev
          - git
          - curl
          - wget
          - cmake
        state: present
        update_cache: yes

    - name: Create bitcoin group
      group:
        name: "{{ bitcoin_group }}"
        system: yes
        state: present

    - name: Create bitcoin user
      user:
        name: "{{ bitcoin_user }}"
        group: "{{ bitcoin_group }}"
        system: yes
        shell: /usr/sbin/nologin
        home: "{{ bitcoin_data_dir }}"
        create_home: yes
        state: present

    - name: Create bitcoin-knots directory
      file:
        path: "{{ bitcoin_knots_dir }}"
        state: directory
        owner: root
        group: root
        mode: '0755'

    - name: Create bitcoin-knots source directory
      file:
        path: "{{ bitcoin_knots_source_dir }}"
        state: directory
        owner: root
        group: root
        mode: '0755'

    - name: Create bitcoin data directory (for config, logs, wallets)
      file:
        path: "{{ bitcoin_data_dir }}"
        state: directory
        owner: "{{ bitcoin_user }}"
        group: "{{ bitcoin_group }}"
        mode: '0750'

    - name: Create bitcoin large data directory (for blockchain)
      file:
        path: "{{ bitcoin_large_data_dir }}"
        state: directory
        owner: "{{ bitcoin_user }}"
        group: "{{ bitcoin_group }}"
        mode: '0750'

    - name: Create bitcoin config directory
      file:
        path: "{{ bitcoin_conf_dir }}"
        state: directory
        owner: root
        group: root
        mode: '0755'

    - name: Check if bitcoind binary already exists
      stat:
        path: "{{ bitcoin_build_prefix }}/bin/bitcoind"
      register: bitcoind_binary_exists
      changed_when: false

    - name: Install gnupg for signature verification
      apt:
        name: gnupg
        state: present
      when: not bitcoind_binary_exists.stat.exists

    - name: Import Luke Dashjr's Bitcoin Knots signing key
      command: gpg --keyserver hkps://keyserver.ubuntu.com --recv-keys 90C8019E36C2E964
      register: key_import
      changed_when: "'already in secret keyring' not in key_import.stdout and 'already in public keyring' not in key_import.stdout"
      when: not bitcoind_binary_exists.stat.exists
      failed_when: key_import.rc != 0

    - name: Display imported key fingerprint
      command: gpg --fingerprint 90C8019E36C2E964
      register: key_fingerprint
      changed_when: false
      when: not bitcoind_binary_exists.stat.exists


    - name: Download SHA256SUMS file
      get_url:
        url: "https://bitcoinknots.org/files/{{ bitcoin_version_major }}.x/{{ bitcoin_knots_version_short }}/SHA256SUMS"
        dest: "/tmp/bitcoin-knots-{{ bitcoin_knots_version_short }}-SHA256SUMS"
        mode: '0644'
      when: not bitcoind_binary_exists.stat.exists

    - name: Download SHA256SUMS.asc signature file
      get_url:
        url: "https://bitcoinknots.org/files/{{ bitcoin_version_major }}.x/{{ bitcoin_knots_version_short }}/SHA256SUMS.asc"
        dest: "/tmp/bitcoin-knots-{{ bitcoin_knots_version_short }}-SHA256SUMS.asc"
        mode: '0644'
      when: not bitcoind_binary_exists.stat.exists

    - name: Verify PGP signature on SHA256SUMS file
      command: gpg --verify /tmp/bitcoin-knots-{{ bitcoin_knots_version_short }}-SHA256SUMS.asc /tmp/bitcoin-knots-{{ bitcoin_knots_version_short }}-SHA256SUMS
      register: sha256sums_verification
      changed_when: false
      failed_when: sha256sums_verification.rc != 0
      when: not bitcoind_binary_exists.stat.exists


    - name: Display SHA256SUMS verification result
      debug:
        msg: "{{ sha256sums_verification.stdout_lines + sha256sums_verification.stderr_lines }}"
      when: not bitcoind_binary_exists.stat.exists

    - name: Fail if SHA256SUMS signature verification failed
      fail:
        msg: "SHA256SUMS signature verification failed. Aborting build."
      when: not bitcoind_binary_exists.stat.exists and ('Good signature' not in sha256sums_verification.stdout and 'Good signature' not in sha256sums_verification.stderr)

    - name: Remove any existing tarball to force fresh download
      file:
        path: /tmp/bitcoin-{{ bitcoin_knots_version_short }}.tar.gz
        state: absent
      when: not bitcoind_binary_exists.stat.exists

    - name: Download Bitcoin Knots source tarball
      get_url:
        url: "{{ bitcoin_source_tarball_url }}"
        dest: "/tmp/bitcoin-{{ bitcoin_knots_version_short }}.tar.gz"
        mode: '0644'
        validate_certs: yes
        force: yes
      when: not bitcoind_binary_exists.stat.exists

    - name: Calculate SHA256 checksum of downloaded tarball
      command: sha256sum /tmp/bitcoin-{{ bitcoin_knots_version_short }}.tar.gz
      register: tarball_checksum
      changed_when: false
      when: not bitcoind_binary_exists.stat.exists

    - name: Extract expected checksum from SHA256SUMS file
      shell: grep "bitcoin-{{ bitcoin_knots_version_short }}.tar.gz" /tmp/bitcoin-knots-{{ bitcoin_knots_version_short }}-SHA256SUMS | awk '{print $1}'
      register: expected_checksum
      changed_when: false
      when: not bitcoind_binary_exists.stat.exists
      failed_when: expected_checksum.stdout == ""

    - name: Display checksum comparison
      debug:
        msg:
          - "Expected: {{ expected_checksum.stdout | trim }}"
          - "Actual: {{ tarball_checksum.stdout.split()[0] }}"
      when: not bitcoind_binary_exists.stat.exists

    - name: Verify tarball checksum matches SHA256SUMS
      fail:
        msg: "Tarball checksum mismatch! Expected {{ expected_checksum.stdout | trim }}, got {{ tarball_checksum.stdout.split()[0] }}"
      when: not bitcoind_binary_exists.stat.exists and expected_checksum.stdout | trim != tarball_checksum.stdout.split()[0]

    - name: Remove existing source directory if it exists (to force fresh extraction)
      file:
        path: "{{ bitcoin_knots_source_dir }}"
        state: absent
      when: not bitcoind_binary_exists.stat.exists

    - name: Remove extracted directory if it exists (from previous runs)
      file:
        path: "{{ bitcoin_knots_dir }}/bitcoin-{{ bitcoin_knots_version_short }}"
        state: absent
      when: not bitcoind_binary_exists.stat.exists

    - name: Extract verified source tarball
      unarchive:
        src: /tmp/bitcoin-{{ bitcoin_knots_version_short }}.tar.gz
        dest: "{{ bitcoin_knots_dir }}"
        remote_src: yes
      when: not bitcoind_binary_exists.stat.exists

    - name: Check if extracted directory exists
      stat:
        path: "{{ bitcoin_knots_dir }}/bitcoin-{{ bitcoin_knots_version_short }}"
      register: extracted_dir_stat
      changed_when: false
      when: not bitcoind_binary_exists.stat.exists

    - name: Rename extracted directory to expected name
      command: mv "{{ bitcoin_knots_dir }}/bitcoin-{{ bitcoin_knots_version_short }}" "{{ bitcoin_knots_source_dir }}"
      when: not bitcoind_binary_exists.stat.exists and extracted_dir_stat.stat.exists

    - name: Check if CMakeLists.txt exists
      stat:
        path: "{{ bitcoin_knots_source_dir }}/CMakeLists.txt"
      register: cmake_exists
      changed_when: false
      when: not bitcoind_binary_exists.stat.exists

    - name: Create CMake build directory
      file:
        path: "{{ bitcoin_knots_source_dir }}/build"
        state: directory
        mode: '0755'
      when: not bitcoind_binary_exists.stat.exists and cmake_exists.stat.exists | default(false)

    - name: Configure Bitcoin Knots build with CMake
      command: >
        cmake
        -DCMAKE_INSTALL_PREFIX={{ bitcoin_build_prefix }}
        -DBUILD_BITCOIN_WALLET=OFF
        -DCMAKE_BUILD_TYPE=Release
        ..
      args:
        chdir: "{{ bitcoin_knots_source_dir }}/build"
      when: not bitcoind_binary_exists.stat.exists and cmake_exists.stat.exists | default(false)
      register: configure_result
      changed_when: true

    - name: Fail if CMakeLists.txt not found
      fail:
        msg: "CMakeLists.txt not found in {{ bitcoin_knots_source_dir }}. Cannot build Bitcoin Knots."
      when: not bitcoind_binary_exists.stat.exists and not (cmake_exists.stat.exists | default(false))

    - name: Build Bitcoin Knots with CMake (this may take 30-60+ minutes)
      command: cmake --build . -j{{ bitcoin_build_jobs }}
      args:
        chdir: "{{ bitcoin_knots_source_dir }}/build"
      when: not bitcoind_binary_exists.stat.exists and cmake_exists.stat.exists | default(false)
      async: 3600
      poll: 0
      register: build_result
      changed_when: true

    - name: Check build status
      async_status:
        jid: "{{ build_result.ansible_job_id }}"
      register: build_job_result
      until: build_job_result.finished
      retries: 120
      delay: 60
      when: not bitcoind_binary_exists.stat.exists and build_result.ansible_job_id is defined

    - name: Fail if build failed
      fail:
        msg: "Bitcoin Knots build failed: {{ build_job_result.msg }}"
      when: not bitcoind_binary_exists.stat.exists and build_result.ansible_job_id is defined and build_job_result.failed | default(false)

    - name: Install Bitcoin Knots binaries
      command: cmake --install .
      args:
        chdir: "{{ bitcoin_knots_source_dir }}/build"
      when: not bitcoind_binary_exists.stat.exists and cmake_exists.stat.exists | default(false)
      changed_when: true

    - name: Verify bitcoind binary exists
      stat:
        path: "{{ bitcoin_build_prefix }}/bin/bitcoind"
      register: bitcoind_installed
      changed_when: false

    - name: Verify bitcoin-cli binary exists
      stat:
        path: "{{ bitcoin_build_prefix }}/bin/bitcoin-cli"
      register: bitcoin_cli_installed
      changed_when: false

    - name: Fail if binaries not found
      fail:
        msg: "Bitcoin Knots binaries not found after installation"
      when: not bitcoind_installed.stat.exists or not bitcoin_cli_installed.stat.exists

    - name: Create bitcoin.conf configuration file
      copy:
        dest: "{{ bitcoin_conf_dir }}/bitcoin.conf"
        content: |
          # Bitcoin Knots Configuration
          # Generated by Ansible

          # Data directory (blockchain storage)
          datadir={{ bitcoin_large_data_dir }}

          # RPC Configuration
          server=1
          rpcuser={{ bitcoin_rpc_user }}
          rpcpassword={{ bitcoin_rpc_password }}
          rpcbind={{ bitcoin_rpc_bind }}
          rpcport={{ bitcoin_rpc_port }}
          rpcallowip=127.0.0.1

          # Network Configuration
          listen=1
          port={{ bitcoin_p2p_port }}
          maxconnections={{ bitcoin_max_connections }}

          # Performance
          dbcache={{ bitcoin_dbcache_mb }}

          # Transaction Index (optional)
          {% if bitcoin_enable_txindex %}
          txindex=1
          {% endif %}

          # Pruning (optional)
          {% if bitcoin_enable_prune %}
          prune={{ bitcoin_enable_prune }}
          {% endif %}

          # Logging
          logtimestamps=1
          logfile={{ bitcoin_data_dir }}/debug.log

          # Security
          disablewallet=1
        owner: "{{ bitcoin_user }}"
        group: "{{ bitcoin_group }}"
        mode: '0640'
      notify: Restart bitcoind

    - name: Create systemd service file for bitcoind
      copy:
        dest: /etc/systemd/system/bitcoind.service
        content: |
          [Unit]
          Description=Bitcoin Knots daemon
          After=network.target

          [Service]
          Type=simple
          User={{ bitcoin_user }}
          Group={{ bitcoin_group }}
          ExecStart={{ bitcoin_build_prefix }}/bin/bitcoind -conf={{ bitcoin_conf_dir }}/bitcoin.conf
          Restart=always
          RestartSec=10
          TimeoutStopSec=600
          StandardOutput=journal
          StandardError=journal

          [Install]
          WantedBy=multi-user.target
        owner: root
        group: root
        mode: '0644'
      notify: Restart bitcoind

    - name: Reload systemd daemon
      systemd:
        daemon_reload: yes

    - name: Enable and start bitcoind service
      systemd:
        name: bitcoind
        enabled: yes
        state: started

    - name: Wait for bitcoind RPC to be available
      uri:
        url: "http://{{ bitcoin_rpc_bind }}:{{ bitcoin_rpc_port }}"
        method: POST
        body_format: json
        body:
          jsonrpc: "1.0"
          id: "healthcheck"
          method: "getblockchaininfo"
          params: []
        user: "{{ bitcoin_rpc_user }}"
        password: "{{ bitcoin_rpc_password }}"
        status_code: 200
        timeout: 10
      register: rpc_check
      until: rpc_check.status == 200
      retries: 30
      delay: 5
      ignore_errors: yes

    - name: Display RPC connection status
      debug:
        msg: "Bitcoin Knots RPC is {{ 'available' if rpc_check.status == 200 else 'not yet available' }}"

    - name: Allow Bitcoin P2P port on Tailscale interface only
      ufw:
        rule: allow
        direction: in
        port: "{{ bitcoin_p2p_port }}"
        proto: tcp
        interface: "{{ bitcoin_tailscale_interface }}"
        comment: "Bitcoin Knots P2P (Tailscale only)"

    - name: Allow Bitcoin P2P port (UDP) on Tailscale interface only
      ufw:
        rule: allow
        direction: in
        port: "{{ bitcoin_p2p_port }}"
        proto: udp
        interface: "{{ bitcoin_tailscale_interface }}"
        comment: "Bitcoin Knots P2P UDP (Tailscale only)"

    - name: Verify UFW rules for Bitcoin Knots
      command: ufw status numbered
      register: ufw_status
      changed_when: false

    - name: Display UFW status
      debug:
        msg: "{{ ufw_status.stdout_lines }}"

    - name: Create Bitcoin Knots health check and push script
      copy:
        dest: /usr/local/bin/bitcoin-knots-healthcheck-push.sh
        content: |
          #!/bin/bash
          #
          # Bitcoin Knots Health Check and Push to Uptime Kuma
          # Checks if bitcoind RPC is responding and pushes status to Uptime Kuma
          #

          RPC_HOST="{{ bitcoin_rpc_bind }}"
          RPC_PORT={{ bitcoin_rpc_port }}
          RPC_USER="{{ bitcoin_rpc_user }}"
          RPC_PASSWORD="{{ bitcoin_rpc_password }}"
          UPTIME_KUMA_PUSH_URL="${UPTIME_KUMA_PUSH_URL}"

          # Check if bitcoind RPC is responding
          check_bitcoind() {
              local response
              response=$(curl -s --max-time 5 \
                  --user "${RPC_USER}:${RPC_PASSWORD}" \
                  --data-binary '{"jsonrpc":"1.0","id":"healthcheck","method":"getblockchaininfo","params":[]}' \
                  --header 'Content-Type: application/json' \
                  "http://${RPC_HOST}:${RPC_PORT}" 2>&1)
              
              if [ $? -eq 0 ]; then
                  # Check if response contains error
                  if echo "$response" | grep -q '"error"'; then
                      return 1
                  else
                      return 0
                  fi
              else
                  return 1
              fi
          }

          # Push status to Uptime Kuma
          push_to_uptime_kuma() {
              local status=$1
              local msg=$2
              
              if [ -z "$UPTIME_KUMA_PUSH_URL" ]; then
                  echo "ERROR: UPTIME_KUMA_PUSH_URL not set"
                  return 1
              fi
              
              # URL encode the message
              local encoded_msg=$(echo -n "$msg" | curl -Gso /dev/null -w %{url_effective} --data-urlencode "msg=$msg" "" | cut -c 3-)
              
              curl -s --max-time 10 --retry 2 -o /dev/null \
                  "${UPTIME_KUMA_PUSH_URL}?status=${status}&msg=${encoded_msg}&ping=" || true
          }

          # Main health check
          if check_bitcoind; then
              push_to_uptime_kuma "up" "OK"
              exit 0
          else
              push_to_uptime_kuma "down" "bitcoind RPC not responding"
              exit 1
          fi
        owner: root
        group: root
        mode: '0755'

    - name: Install curl for health check script
      apt:
        name: curl
        state: present

    - name: Create systemd timer for Bitcoin Knots health check
      copy:
        dest: /etc/systemd/system/bitcoin-knots-healthcheck.timer
        content: |
          [Unit]
          Description=Bitcoin Knots Health Check Timer
          Requires=bitcoind.service

          [Timer]
          OnBootSec=1min
          OnUnitActiveSec=1min
          Persistent=true

          [Install]
          WantedBy=timers.target
        owner: root
        group: root
        mode: '0644'

    - name: Create systemd service for Bitcoin Knots health check
      copy:
        dest: /etc/systemd/system/bitcoin-knots-healthcheck.service
        content: |
          [Unit]
          Description=Bitcoin Knots Health Check and Push to Uptime Kuma
          After=network.target bitcoind.service

          [Service]
          Type=oneshot
          User=root
          ExecStart=/usr/local/bin/bitcoin-knots-healthcheck-push.sh
          Environment=UPTIME_KUMA_PUSH_URL=
          StandardOutput=journal
          StandardError=journal

          [Install]
          WantedBy=multi-user.target
        owner: root
        group: root
        mode: '0644'

    - name: Reload systemd daemon for health check
      systemd:
        daemon_reload: yes

    - name: Enable and start Bitcoin Knots health check timer
      systemd:
        name: bitcoin-knots-healthcheck.timer
        enabled: yes
        state: started

    - name: Create Uptime Kuma push monitor setup script for Bitcoin Knots
      delegate_to: localhost
      become: no
      copy:
        dest: /tmp/setup_bitcoin_knots_monitor.py
        content: |
          #!/usr/bin/env python3
          import sys
          import traceback
          import yaml
          from uptime_kuma_api import UptimeKumaApi, MonitorType
          
          try:
              # Load configs
              with open('/tmp/ansible_config.yml', 'r') as f:
                  config = yaml.safe_load(f)
              
              url = config['uptime_kuma_url']
              username = config['username']
              password = config['password']
              monitor_name = config['monitor_name']
              
              # Connect to Uptime Kuma
              api = UptimeKumaApi(url, timeout=30)
              api.login(username, password)
              
              # Get all monitors
              monitors = api.get_monitors()
              
              # Find or create "services" group
              group = next((m for m in monitors if m.get('name') == 'services' and m.get('type') == 'group'), None)
              if not group:
                  group_result = api.add_monitor(type='group', name='services')
                  # Refresh to get the group with id
                  monitors = api.get_monitors()
                  group = next((m for m in monitors if m.get('name') == 'services' and m.get('type') == 'group'), None)
              
              # Check if monitor already exists
              existing_monitor = None
              for monitor in monitors:
                  if monitor.get('name') == monitor_name:
                      existing_monitor = monitor
                      break
              
              # Get ntfy notification ID
              notifications = api.get_notifications()
              ntfy_notification_id = None
              for notif in notifications:
                  if notif.get('type') == 'ntfy':
                      ntfy_notification_id = notif.get('id')
                      break
              
              if existing_monitor:
                  print(f"Monitor '{monitor_name}' already exists (ID: {existing_monitor['id']})")
                  # Get push URL from existing monitor
                  push_id = existing_monitor.get('push_token', existing_monitor.get('id'))
                  push_url = f"{url}/api/push/{push_id}"
                  print(f"Push URL: {push_url}")
                  print("Skipping - monitor already configured")
              else:
                  print(f"Creating push monitor '{monitor_name}'...")
                  result = api.add_monitor(
                      type=MonitorType.PUSH,
                      name=monitor_name,
                      parent=group['id'],
                      interval=60,
                      maxretries=3,
                      retryInterval=60,
                      notificationIDList={ntfy_notification_id: True} if ntfy_notification_id else {}
                  )
                  # Get push URL from created monitor
                  monitors = api.get_monitors()
                  new_monitor = next((m for m in monitors if m.get('name') == monitor_name), None)
                  if new_monitor:
                      push_id = new_monitor.get('push_token', new_monitor.get('id'))
                      push_url = f"{url}/api/push/{push_id}"
                      print(f"Push URL: {push_url}")
              
              api.disconnect()
              print("SUCCESS")
              
          except Exception as e:
              error_msg = str(e) if str(e) else repr(e)
              print(f"ERROR: {error_msg}", file=sys.stderr)
              traceback.print_exc(file=sys.stderr)
              sys.exit(1)
        mode: '0755'

    - name: Create temporary config for monitor setup
      delegate_to: localhost
      become: no
      copy:
        dest: /tmp/ansible_config.yml
        content: |
          uptime_kuma_url: "{{ uptime_kuma_api_url }}"
          username: "{{ uptime_kuma_username }}"
          password: "{{ uptime_kuma_password }}"
          monitor_name: "Bitcoin Knots"
        mode: '0644'

    - name: Run Uptime Kuma push monitor setup
      command: python3 /tmp/setup_bitcoin_knots_monitor.py
      delegate_to: localhost
      become: no
      register: monitor_setup
      changed_when: "'SUCCESS' in monitor_setup.stdout"
      ignore_errors: yes

    - name: Extract push URL from monitor setup output
      set_fact:
        uptime_kuma_push_url: "{{ monitor_setup.stdout | regex_search('Push URL: (https?://[^\\s]+)', '\\1') | first | default('') }}"
      delegate_to: localhost
      become: no
      when: monitor_setup.stdout is defined

    - name: Display extracted push URL
      debug:
        msg: "Uptime Kuma Push URL: {{ uptime_kuma_push_url }}"
      when: uptime_kuma_push_url | default('') != ''

    - name: Set push URL in systemd service environment
      lineinfile:
        path: /etc/systemd/system/bitcoin-knots-healthcheck.service
        regexp: '^Environment=UPTIME_KUMA_PUSH_URL='
        line: "Environment=UPTIME_KUMA_PUSH_URL={{ uptime_kuma_push_url }}"
        state: present
        insertafter: '^\[Service\]'
      when: uptime_kuma_push_url | default('') != ''

    - name: Reload systemd daemon after push URL update
      systemd:
        daemon_reload: yes
      when: uptime_kuma_push_url | default('') != ''

    - name: Restart health check timer to pick up new environment
      systemd:
        name: bitcoin-knots-healthcheck.timer
        state: restarted
      when: uptime_kuma_push_url | default('') != ''

    - name: Clean up temporary files
      delegate_to: localhost
      become: no
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - /tmp/setup_bitcoin_knots_monitor.py
        - /tmp/ansible_config.yml

  handlers:
    - name: Restart bitcoind
      systemd:
        name: bitcoind
        state: restarted