Rédiger « OVH/VPC02/idneuf/Nagios » ici.

== nagios-plugins et nagios-nrpe-server via Ansible ==

Fichier playbook : nagios-nrpe.yml
{{{
---
- name: nagios-nrpe
  hosts:
    - ovh-vpc02-dev
  become: True

  vars: 
    nagios_server: 10.242.0.3

  tasks:

  - name: installation Nagios NRPE
    become: true
    apt: pkg="{{ item }}" state=latest
    with_items:
      - nagios-nrpe-server
      - nagios-plugins

  - name: configuration Nagios NRPE
    become: true
    replace: dest=/etc/nagios/nrpe.cfg regexp="^allowed_hosts=127\.0\.0\.1$" replace='allowed_hosts=127.0.0.1,{{ nagios_server }}' backup=no


  - name: create a new file with lineinfile
    lineinfile: dest=/etc/nagios/nrpe.d/host.cfg  
                regexp='^' line=''
                state=present
                create=True

  - name: create config file
    blockinfile:
       dest=/etc/nagios/nrpe.d/host.cfg 
       content="
          command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10\n
          command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20\n
          command[check_all_disks]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10\n
          command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z\n
          command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200\n
          command[check_swap]=/usr/lib/nagios/plugins/check_swap -w 20 -c 10\n"

  - name: restart nagios-nrpe-server
    shell: "systemctl restart nagios-nrpe-server"

}}}

== check_nginx ==

Source : [[https://exchange.nagios.org/directory/Plugins/Software/check_nginx-2Esh/details |check_nginx.sh - Nagios Exchange]]

 1. Telecharger le plugin dans /usr/lib/nagios/plugins

{{{
cd /usr/lib/nagios/plugins
wget 'https://exchange.nagios.org/components/com_mtree/attachment.php?link_id=1414&cf_id=24'
mv https://exchange.nagios.org/components/com_mtree/attachment.php?link_id=1414&cf_id=24 check_nginx
chmod +x check_nginx
}}}

 2. Ajouter la commende NRPE, ici dans : /etc/nagios/nrpe.d/host.cfg

{{{
command[check_nginx]=/usr/lib/nagios/plugins/check_nginx -w 150 -c 250
}}}

Les seuils correspondent respectivement a 150 et 250 req/con

 3. Definr la commande dans Nagios

{{{
define service {
        hostgroup_name                  nginx
        service_description             NginX Status
        check_command                   check_nrpe_1arg!check_nginx
        use                             generic-service
        notification_interval           0 ; set > 0 if you want to be renotified
}

}}}