Role Name

Install Prometheus Node_Exporter from github repository

Requirements

nope

Role Variables

all variables are defined in defaults:

---
# defaults file for node_exporter

prometheus_user:                       prometheus
prometheus_group:                      prometheus
prometheus_install_path:               '/opt/prometheus'
prometheus_config_path:                '/etc/prometheus'
prometheus_pid_path:                   '/var/run/prometheus'
prometheus_loglevel:                   'info'

prometheus_node_exporter_install_path: '{{ prometheus_install_path }}'
prometheus_node_exporter_config_path:  '{{ prometheus_config_path }}'
prometheus_node_exporter_pid_path:     '{{ prometheus_pid_path }}'
prometheus_node_exporter_user:         '{{ prometheus_user }}'
prometheus_node_exporter_group:        '{{ prometheus_group }}'
prometheus_node_exporter_loglevel:     '{{ prometheus_loglevel }}'
prometheus_node_exporter_listen:       '{{ prometheus_node_exporter_listen_ip }}:{{ prometheus_node_exporter_listen_port }}'
prometheus_node_exporter_listen_port:  '9100'
prometheus_node_exporter_listen_ip:    ''
prometheus_node_exporter_version:      '0.17.0'

enable_ufw:                            false
prometheus_node_exporter_src_access:
  - "{{ ansible_default_ipv4.network }}/{{ ansible_default_ipv4.netmask }}"

For typical deployment you can eventually define enable ufw fw and define src access list Based on defined variables you can set variables common for all prometheus stack

For Debian7 you can use prometheus_node_exporter_validate_certs=false to resolve problem with github cert (it's not recommended).

Dependencies

If you want to set fw, you need to have ufw role

Example Playbook

Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:

    - hosts: servers
      roles:
         - role: node_exporter

License

BSD

Author Information

Tomasz Baczynski