From 695131994b5a749e129fb304e8ba709acd37afe8 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 26 May 2023 21:34:14 +0200
Subject: add support for chrony_exporter (replaces textfile collector)

---
 .../prometheus/exporter/chrony/tasks/main.yml      | 65 ++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 roles/monitoring/prometheus/exporter/chrony/tasks/main.yml

(limited to 'roles/monitoring/prometheus/exporter/chrony/tasks/main.yml')

diff --git a/roles/monitoring/prometheus/exporter/chrony/tasks/main.yml b/roles/monitoring/prometheus/exporter/chrony/tasks/main.yml
new file mode 100644
index 00000000..f15037ec
--- /dev/null
+++ b/roles/monitoring/prometheus/exporter/chrony/tasks/main.yml
@@ -0,0 +1,65 @@
+---
+- name: generate apt pin file for exporter-chrony package
+  when: prometheus_exporter_chrony_version is defined
+  copy:
+    dest: "/etc/apt/preferences.d/prom-exporter-chrony.pref"
+    content: |
+      Package: prom-exporter-chrony
+      Pin: version {{ prometheus_exporter_chrony_version }}-1
+      Pin-Priority: 1001
+
+- name: remove apt pin file for exporter-chrony package
+  when: prometheus_exporter_chrony_version is not defined
+  file:
+    path: "/etc/apt/preferences.d/prom-exporter-chrony.pref"
+    state: absent
+
+- name: install apt packages
+  apt:
+    name: "prom-exporter-chrony{% if prometheus_exporter_chrony_version is defined %}={{ prometheus_exporter_chrony_version }}-1{% endif %}"
+    state: present
+    allow_downgrade: yes
+  notify: restart prometheus-chrony-exporter
+
+- name: generate systemd service unit
+  template:
+    src: service.j2
+    dest: /etc/systemd/system/prometheus-chrony-exporter.service
+  notify: restart prometheus-chrony-exporter
+
+- name: make sure prometheus-chrony-exporter is enabled and started
+  systemd:
+    name: prometheus-chrony-exporter.service
+    daemon_reload: yes
+    state: started
+    enabled: yes
+
+- name: register exporter
+  copy:
+    content: |
+      location = /chrony {
+          proxy_pass http://127.0.0.1:9123/metrics;
+      }
+    dest: /etc/prometheus/exporter/chrony.locations
+  notify: reload nginx
+
+
+## TODO: remove these tasks once all hosts have been migrated
+- name: make sure the systemd timer for chrony textfile collector is disabled and stopped
+  systemd:
+    service: prometheus-node-exporter_chrony.timer
+    enabled: no
+    state: stopped
+  register: result_systemd_stop
+  failed_when: "result_systemd_stop is failed and 'Could not find the requested service' not in result_systemd_stop.msg"
+
+- name: remove files from chrony textfile collector
+  loop:
+  - /etc/systemd/system/prometheus-node-exporter_chrony.timer
+  - /etc/systemd/system/prometheus-node-exporter_chrony.service
+  - /usr/local/share/prometheus-node-exporter/chrony
+  - /var/lib/prometheus-node-exporter/textfile-collector/chrony.prom
+  file:
+    path: "{{ item }}"
+    state: absent
+  notify: reload systemd
-- 
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