ffmyk-ansible/roles/install_monitoring/tasks/install_munin.yml

---
- name: install munin
  pacman:
      name: munin-node
      state: present

- name: copy munin-node config
  template:
      src: munin-node.conf.j2
      dest: /etc/munin/munin-node.conf
  notify: restart munin-node

- name: install perl-json
  pacman:
      name: perl-json
      state: present

- name: copy wg peers plugin
  copy:
      src: munin/munin_wg_peers
      dest: /usr/lib/munin/plugins/wg_peers_
      mode: 0755
  notify: restart munin-node

- name: copy wg peers plugin config
  copy:
      src: munin/munin_wg_conf
      dest: /etc/munin/plugin-conf.d/wg
      mode: 0644
  notify: restart munin-node

- name: enable munin plugins for wg peers
  file:
      path: /etc/munin/plugins/wg_peers_{{ item.name }}
      src: /usr/lib/munin/plugins/wg_peers_
      state: link
  with_items: "{{ sites }}"
  notify: restart munin-node

- name: copy dhcp-pool plugin
  copy:
      src: munin/munin_dhcp_pool_plugin
      dest: /usr/lib/munin/plugins/dhcp-pool
      mode: 0755
  notify: restart munin-node

- name: enable munin plugins for dhcp
  file:
      path: /etc/munin/plugins/dhcp-pool
      src: /usr/lib/munin/plugins/dhcp-pool
      state: link
  notify: restart munin-node

- name: copy fw_conntrack plugin
  copy:
      src: munin/munin_fw_conntrack
      dest: /etc/munin/plugins/fw_conntrack
      mode: 0755
  notify: restart munin-node

- name: copy bind9stats plugin
  copy:
      src: munin/bind9stats.py
      dest: /etc/munin/plugins/bind9stats.py
      mode: 0755
  notify: restart munin-node

- name: copy global config
  copy:
      src: munin/munin_global_conf
      dest: /etc/munin/plugin-conf.d/global
  notify: restart munin-node

- name: install netstat
  pacman:
      name: net-tools
      state: present

- name: install perl-lwp-protocol-https
  pacman:
      name: perl-lwp-protocol-https
      state: present

- name: enable munin plugins for network monitoring (1/6)
  file:
      path: /etc/munin/plugins/if_{{ ansible_default_ipv4.interface }}
      src: /usr/lib/munin/plugins/if_
      state: link
  notify: restart munin-node

- name: enable munin plugins for network monitoring (2/6)
  file:
      path: /etc/munin/plugins/if_{{ ansible_default_ipv6.interface }}
      src: /usr/lib/munin/plugins/if_
      state: link
  notify: restart munin-node

- name: enable munin plugins for network monitoring (3/6)
  file:
      path: /etc/munin/plugins/if_{{ item[0] }}{{ item[1].name }}
      src: /usr/lib/munin/plugins/if_
      state: link
  notify: restart munin-node
  with_nested:
      - [ 'bat', 'vpn', 'wg', 'vx' ]
      - "{{ sites }}"

- name: enable munin plugins for network monitoring (4/6)
  file:
      path: /etc/munin/plugins/if_bb{{ item.name }}
      src: /usr/lib/munin/plugins/if_
      state: link
  notify: restart munin-node
  with_items: "{{ wireguard_bb_peers|default([]) }}"

- name: enable munin plugins for network monitoring (5/6)
  file:
      path: /etc/munin/plugins/if_bb{{ hostvars[item]['wireguard_bb_name'] }}
      src: /usr/lib/munin/plugins/if_
      state: link
  notify: restart munin-node
  with_items: "{{ groups['fastd'] | difference([inventory_hostname]) }}"

- name: enable munin plugins for network monitoring (6/6)
  file:
      path: /etc/munin/plugins/if_{{ item.name }}
      src: /usr/lib/munin/plugins/if_
      state: link
  notify: restart munin-node
  with_items: "{{ ffrl_peers }}"

- name: enable munin plugins
  file:
      path: /etc/munin/plugins/{{ item }}
      src: /usr/lib/munin/plugins/{{ item }}
      state: link
  with_items:
      - cpu
      - df
      - df_inode
      - diskstats
      - entropy
      - forks
      - fw_forwarded_local
      - fw_packets
      - interrupts
      - irqstats
      - load
      - memory
      - netstat
      - nginx_request
      - nginx_status
      - ntp_kernel_err
      - ntp_kernel_pll_freq
      - ntp_kernel_pll_off
      - ntp_offset
      - open_files
      - open_inodes
      - proc_pri
      - processes
      - threads
      - uptime
      - users
      - vmstat
  notify: restart munin-node

- name: start and enable munin-node
  systemd:
      name: munin-node.service
      enabled: yes
      state: started