library/roles/prometheus-haproxy-exporter: Playbook that installs and runs the prometheus haproxy exporter.

This commit is contained in:
Andrea Dell'Amico 2018-02-07 19:06:21 +01:00
parent 41c9af2faa
commit 290e1c9f5e
5 changed files with 102 additions and 0 deletions

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---
prometheus_h_e_install: True
prometheus_h_e_version: 0.9.0
prometheus_h_e_dir: 'haproxy_exporter-{{ prometheus_h_e_version }}.linux-amd64'
prometheus_h_e_file: '{{ prometheus_h_e_dir }}.tar.gz'
prometheus_h_e_download_url: 'https://github.com/prometheus/haproxy_exporter/releases/download/v{{ prometheus_h_e_version }}/{{ prometheus_h_e_file }}'
prometheus_h_e_user: prometheus
prometheus_h_e_home: /opt/prometheus
prometheus_h_e_dist_dir: '{{ prometheus_h_e_home }}/dist'
prometheus_h_e_logdir: '/var/log/prometheus-haproxy-exporter'
prometheus_h_e_cmd: '{{ prometheus_h_e_dist_dir }}/{{ prometheus_h_e_dir }}/haproxy_exporter'
prometheus_h_e_port: 9101
prometheus_h_e_loglevel: info
prometheus_h_e_haproxy_pid: '/run/haproxy.pid'
prometheus_h_e_haproxy_stats_port: 8881
prometheus_h_e_opts: '--web.listen-address=":{{ prometheus_h_e_port }}" --log.level={{ prometheus_h_e_loglevel }} --haproxy.pid-file="{{ prometheus_h_e_haproxy_pid }}" --haproxy.scrape-uri="http://localhost:{{ prometheus_h_e_haproxy_stats_port }}/;csv"'
# List the additional options here
prometheus_h_e_additional_opts: ''

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---
- name: systemd reload
command: systemctl daemon-reload
- name: Restart haproxy exporter
service: name=haproxy_exporter state=restarted

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---
- block:
- name: Create the user under the haproxy exporter will run
user: name={{ prometheus_h_e_user }} home={{ prometheus_h_e_home }} createhome=no shell=/usr/sbin/nologin system=yes
- name: Create the prometheus haproxy exporter base directory
file: dest={{ item }} state=directory owner=root group=root
with_items:
- '{{ prometheus_h_e_home }}'
- '{{ prometheus_h_e_dist_dir }}'
- name: Create the prometheus haproxy exporter log directory
file: dest={{ prometheus_h_e_logdir }} state=directory owner={{ prometheus_h_e_user }} group={{ prometheus_h_e_user }}
- name: Download the prometheus haproxy exporter
get_url: url={{ prometheus_h_e_download_url }} dest=/srv/
- name: Unarchive the prometheus distribution
unarchive: src=/srv/{{ prometheus_h_e_file }} dest={{ prometheus_h_e_dist_dir }} remote_src=yes owner=root group=root
args:
creates: '{{ prometheus_h_e_dist_dir }}/{{ prometheus_h_e_dir }}/haproxy_exporter'
notify: Restart haproxy exporter
- name: Install the prometheus haproxy exporter upstart script
template: src=haproxy_exporter.upstart.j2 dest=/etc/init/haproxy_exporter.conf mode=0644 owner=root group=root
when: ansible_service_mgr != 'systemd'
- name: Install the prometheus haproxy exporter systemd unit
template: src=haproxy_exporter.systemd.j2 dest=/etc/systemd/system/haproxy_exporter.service mode=0644 owner=root group=root
when: ansible_service_mgr == 'systemd'
notify: systemd reload
- name: Ensure that prometheus haproxy_exporter is started and enabled
service: name=haproxy_exporter state=started enabled=yes
tags: [ 'prometheus', 'haproxy_exporter' ]
when: prometheus_h_e_install
- block:
- name: Ensure that prometheus haproxy_exporter is stopped and disabled
service: name=haproxy_exporter state=stopped enabled=no
- name: Remove prometheus haproxy exporter upstart script
file: dest=/etc/init/haproxy_exporter.conf state=absent
when: ansible_service_mgr != 'systemd'
- name: Remove the prometheus haproxy exporter systemd unit
file: dest=/etc/systemd/system/haproxy_exporter.service state=absent
when: ansible_service_mgr == 'systemd'
notify: systemd reload
tags: [ 'prometheus', 'haproxy_exporter' ]
when: not prometheus_h_e_install

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[Unit]
Description=haproxy_exporter - Prometheus exporter for haproxy metrics and stats.
After=network.target
[Service]
Type=simple
User={{ prometheus_user }}
Group={{ prometheus_user }}
ExecStart={{ prometheus_h_e_cmd }} {{ prometheus_h_e_opts }} {{ prometheus_h_e_additional_opts }} --collector.systemd

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description "Prometheus haproxy exporter"
start on (local-filesystems and net-device-up IFACE!=lo)
stop on runlevel [016]
respawn
respawn limit 10 5
setuid {{ prometheus_h_e_user }}
setgid {{ prometheus_h_e_user }}
script
exec {{ prometheus_h_e_cmd }} {{ prometheus_h_e_opts }} {{ prometheus_h_e_additional_opts }} > {{ prometheus_h_e_logdir }}/haproxy_exporter.log 2>&1
end script