Ansible Role: prometheus-node-exporter

An Ansible role that installs Prometheus Node Exporter on Ubuntu|Debian|Redhat-based machines.

Requirements

All needed packages will be installed with this role.

Role Variables

Available variables are listed below, along with default values (see defaults/main.yml):

---
# Node exporter default user and group
NODE_EXPORTER_USER: prometheus
NODE_EXPORTER_GROUP: prometheus

# Node exporter base configurations
NODE_EXPORTER_DIST_DIR: /tmp/exporters/dist
NODE_EXPORTER_BIN_DIR: /usr/sbin

# Node exporter version
NODE_EXPORTER_VERSION: 0.18.0

# https://github.com/prometheus/node_exporter#enabled-by-default
NODE_EXPORTER_ENABLED_COLLECTORS: []

# https://github.com/prometheus/node_exporter#disabled-by-default
NODE_EXPORTER_DISABLED_COLLECTORS: []

NODE_EXPORTER_CONFIG_FLAGS:
  'web.listen-address': '0.0.0.0:9100'
  'log.level': 'info'

• NODE_EXPORTER_USER: User used for install and run Node Exporter.

• NODE_EXPORTER_GROUP: Group used for install and run Node Exporter.

• NODE_EXPORTER_DIST_DIR: Temp path used for installation.

• NODE_EXPORTER_BIN_DIR: The path where install Node Exporter.

• NODE_EXPORTER_VERSION: The version of Node Exporter to install.

• NODE_EXPORTER_ENABLED_COLLECTORS: Collectors that are disabled by default to enable. List of disabled collectors

• NODE_EXPORTER_DISABLED_COLLECTORS: Collectors that are enabled by default to disable. List of enabled collectors

• NODE_EXPORTER_CONFIG_FLAGS: The welcome word.

Example Playbook

This is an example of how to use this role:

- hosts: servers
    roles:
        - role: undergreen.prometheus-node-exporter
            prometheus_node_exporter_version: 0.17.0
            prometheus_node_exporter_enabled_collectors:
                - conntrack
                - cpu
                - diskstats
                - entropy
                - filefd
                - filesystem
                - loadavg
                - mdadm
                - meminfo
                - netdev
                - netstat
                - stat
                - textfile
                - time
                - vmstat
            prometheus_node_exporter_config_flags:
                'web.listen-address': '0.0.0.0:9100'
                'log.level': 'info'

Note

Due to prometheus/node_exporter#640 and prometheus/node_exporter#639 changes, this role can only support the minimum version 0.15 of node_exporter.

License