infrastructure/roles/zabbix_agent/tasks/main.yml

---

# If you do not have python-zabbix-api installed (** ON YOUR LOCAL MACHINE **),
# this will fail. Please install it; it is needed for tasks later in this role.
- name: install python-zabbix-api package on localhost
  pacman: name=python-zabbix-api
  run_once: true
  delegate_to: localhost

- name: install packages
  pacman: name=zabbix-agent,python-dbus,perl-json,arch-audit

- name: install packages for borg monitoring
  pacman: name=perl-json
  when: "'borg_clients' in group_names"

- name: install packages for nginx monitoring
  pacman: name=perl-json,perl-clone,perl-statistics-descriptive
  when: "'nginx' in group_names"

- name: install mysql userstats monitoring packages
  pacman: name=perl-dbi,perl-dbd-mysql,perl-json
  when: "'mysql_servers' in group_names"

- name: install postgresql userstats monitoring packages
  pacman: name=perl-dbi,perl-dbd-pg,perl-json
  when: "'postgresql_servers' in group_names"

- name: install memcached monitoring packages
  pacman: name=python-memcached
  when: "'memcached' in group_names"

- name: adding existing zabbix-agent to memcached group
  user:
    name: zabbix-agent
    groups: memcached
    append: yes
  when: "'memcached' in group_names"

- name: set zabbix directory permissions in /etc
  file: path=/etc/zabbix state=directory owner=root group=root mode=755

- name: create host PSK
  shell: umask 077; openssl rand -hex 64 > /etc/zabbix/zabbix_agentd.psk creates=/etc/zabbix/zabbix_agentd.psk

- name: fix permissions of PSK file
  file: path=/etc/zabbix/zabbix_agentd.psk owner=zabbix-agent group=zabbix-agent mode=600

- name: fetch PSK
  command: cat /etc/zabbix/zabbix_agentd.psk
  check_mode: no
  register: zabbix_agent_psk
  changed_when: false

- name: Set host config in zabbix
  zabbix_host:
    server_url: "https://{{ zabbix_agent_server }}"
    login_user: "{{ vault_zabbix_admin_user }}"
    login_password: "{{ vault_zabbix_admin_password }}"
    host_name: "{{ inventory_hostname }}"
    host_groups: "{{ zabbix_agent_host_groups }}"
    visible_name: "{{ inventory_hostname }}"
    link_templates: "{{ zabbix_agent_templates }}"
    status: enabled
    state: present
    inventory_mode: disabled
    interfaces:
      - type: 1
        main: 1
        useip: "{{ zabbix_agent_useip }}"
        ip: "{{ zabbix_agent_ip }}"
        dns: "{{ inventory_hostname }}"
        port: 10050
    tls_psk_identity: "PSK{{ inventory_hostname }}"
    tls_accept: 2
    tls_connect: 2
    tls_psk: "{{ zabbix_agent_psk.stdout }}"
  delegate_to: localhost

- name: install agent config
  template: src=zabbix_agentd.conf dest=/etc/zabbix/zabbix_agentd.conf owner=zabbix-agent group=zabbix-agent mode=600
  notify:
    - restart zabbix agent

- name: Create mysql config for agent checks
  template: src=my.cnf.j2 dest=/etc/zabbix/zabbix_agentd.my.cnf owner=zabbix-agent group=zabbix-agent mode=600
  when: zabbix_agent_mysql_user is defined

- name: Install helper scripts
  copy: src={{ item }} dest=/usr/local/bin/{{ item }} mode=0755 owner=root group=root
  with_items:
    - systemd-units-failed.py
    - mysql-user-stats.pl
    - systemd-discover-accounting-units.py
    - zabbix-borg-timestamps.pl
    - mysql-dbsize-stats.pl
    - postgresql-dbsize-stats.pl
    - postgresql-user-stats.pl
    - memcached-stats.py
    - zabbix-btrfs-subvolume.sh

- name: Install helper scripts
  copy: src=nginx-zabbix.pl dest=/usr/local/bin/nginx-zabbix.pl mode=0755 owner=root group=root
  notify:
    - restart nginx-zabbix.service
  when: "'nginx' in group_names"

- name: install sudo config
  template: src=zabbix-agent-sudoers.conf.j2 dest=/etc/sudoers.d/zabbix-agent-sudoers mode=0440 owner=root group=root

- name: copy nginx-zabbix.service
  copy: src=nginx-zabbix.service dest=/etc/systemd/system/nginx-zabbix.service owner=root group=root mode=0644
  notify:
    - restart nginx-zabbix.service
  when: "'nginx' in group_names"

- name: start nginx-zabbix.service
  service: name=nginx-zabbix.service enabled=yes state=started
  when: "'nginx' in group_names"

- name: run zabbix agent service
  service: name=zabbix-agent enabled=yes state=started

- name: open firewall holes
  firewalld: service=zabbix-agent permanent=true state=enabled immediate=yes
  when: configure_firewall
  tags:
    - firewall