From a8e8cb2ed3d5e68d89edd8785ed59f0ee45f81bf Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Tue, 21 Sep 2021 19:34:25 +0200
Subject: prometheus: simplify job config

---
 roles/monitoring/prometheus/server/tasks/main.yml | 61 +++++++++++------------
 1 file changed, 29 insertions(+), 32 deletions(-)

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

diff --git a/roles/monitoring/prometheus/server/tasks/main.yml b/roles/monitoring/prometheus/server/tasks/main.yml
index d0ccd8af..4bcaa2d5 100644
--- a/roles/monitoring/prometheus/server/tasks/main.yml
+++ b/roles/monitoring/prometheus/server/tasks/main.yml
@@ -13,6 +13,7 @@
   include_role:
     name: "storage/{{ prometheus_server_storage.type }}/volume"
 
+  ## TODO: pin version
 - name: install apt packages
   apt:
     name: prom-server
@@ -37,50 +38,46 @@
 
 - name: create configuration directories
   loop:
-  - jobs
   - rules
   - targets
   file:
     path: "/etc/prometheus/{{ item }}"
     state: directory
 
-- name: create sub-directroy for all exporter types in jobs directory
-  loop: "{{ prometheus_server_jobs_generic + prometheus_server_jobs_special }}"
+- name: create sub-directroy for all jobs in targets directory
+  loop: "{{ prometheus_server_jobs }}"
   file:
-    path: "/etc/prometheus/jobs/{{ item }}"
+    path: "/etc/prometheus/targets/{{ item }}"
     state: directory
 
-- name: generate generic targets config
-  loop: "{{ prometheus_zone_targets }}"
-  loop_control:
-    loop_var: target
-  template:
-    src: targets/generic.yml.j2
-    dest: "/etc/prometheus/targets/{{ target }}.yml"
-  notify: reload prometheus
-
-- name: enable targets for generic jobs
-  loop: "{{ hostvars | prometheus_generic_job_targets(prometheus_server_jobs_generic, prometheus_zone_targets) }}"
-  loop_control:
-    label: "{{ item.job }} -> {{ item.instance }}"
-  file:
-    src: "{{ item.enabled | ternary('/etc/prometheus/targets/' + item.instance + '.yml', omit) }}"
-    path: "/etc/prometheus/jobs/{{ item.job }}/{{ item.instance }}.yml"
-    state: "{{ item.enabled | ternary('link', 'absent') }}"
-  notify: reload prometheus
+- name: enable/disable job targets
+  vars:
+    job_targets: "{{ hostvars | prometheus_job_targets(prometheus_server_jobs, prometheus_zone_targets) }}"
+  block:
+  - name: install files for enabled targets
+    loop: "{{ job_targets }}"
+    loop_control:
+      loop_var: target
+      label: "{{ target.job }} -> {{ target.instance }}"
+    when: target.enabled
+    template:
+      src: "{{ lookup('first_found', {'paths': ['templates/targets'], 'files': [target.job + '.yml.j2', 'generic.yml.j2']}) }}"
+      dest: "/etc/prometheus/targets/{{ target.job }}/{{ target.instance }}.yml"
+    notify: reload prometheus
 
-- name: enable targets for special jobs
-  loop: "{{ hostvars | prometheus_special_job_targets(prometheus_server_jobs_special, prometheus_zone_targets) }}"
-  loop_control:
-    loop_var: target
-    label: "{{ target.job }} -> {{ target.instance }}"
-  template:
-    src: "targets/{{ target.job }}.yml.j2"
-    dest: "/etc/prometheus/jobs/{{ target.job }}/{{ target.instance }}.yml"
-  notify: reload prometheus
+  - name: remove files for disabled targets
+    loop: "{{ job_targets }}"
+    loop_control:
+      loop_var: target
+      label: "{{ target.job }} -> {{ target.instance }}"
+    when: not target.enabled
+    file:
+      path: "/etc/prometheus/targets/{{ target.job }}/{{ target.instance }}.yml"
+      state: absent
+    notify: reload prometheus
 
 - name: generate rules files for all jobs
-  loop: "{{ (prometheus_server_jobs_generic + prometheus_server_jobs_special) | union(['prometheus']) }}"
+  loop: "{{ prometheus_server_jobs | union(['prometheus']) }}"
   template:
     src: rules.yml.j2
     dest: "/etc/prometheus/rules/{{ item }}.yml"
-- 
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