From 6320da1262c1f44ac773c6b6578a59ba286ce973 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Fri, 24 Sep 2021 00:57:01 +0200
Subject: add some basic prometheus node exporter textfile collector scripts

---
 .../prometheus/exporter/node/tasks/main.yml        | 35 ++++++++++++++++++++++
 .../node/tasks/textfile_collector_script.yml       | 21 +++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 roles/monitoring/prometheus/exporter/node/tasks/textfile_collector_script.yml

(limited to 'roles/monitoring/prometheus/exporter/node/tasks')

diff --git a/roles/monitoring/prometheus/exporter/node/tasks/main.yml b/roles/monitoring/prometheus/exporter/node/tasks/main.yml
index 3fa0a1ec..61e385f7 100644
--- a/roles/monitoring/prometheus/exporter/node/tasks/main.yml
+++ b/roles/monitoring/prometheus/exporter/node/tasks/main.yml
@@ -31,3 +31,38 @@
         port: 9100
     dest: /etc/prometheus/exporter/exporter/node.yml
   notify: reload prometheus-exporter-exporter
+
+- name: create directory for textfile collector scripts
+  file:
+    path: /usr/local/lib/prometheus-node-exporter
+    state: directory
+
+- name: install textfile collector script wrapper
+  copy:
+    content: |
+      #!/bin/bash
+
+      if [ -z "$1" ]; then
+        echo "Please specify which collector script to call!"
+        exit 1
+      fi
+      collector="$1"
+
+      set -e
+      rm -f "/var/lib/prometheus-node-exporter/textfile-collector/$collector.prom".*
+      "/usr/local/lib/prometheus-node-exporter/$collector" > "/var/lib/prometheus-node-exporter/textfile-collector/$collector.prom.$$"
+      mv "/var/lib/prometheus-node-exporter/textfile-collector/$collector.prom.$$" "/var/lib/prometheus-node-exporter/textfile-collector/$collector.prom"
+    dest: /usr/local/lib/prometheus-node-exporter/run-collector
+    mode: 0755
+
+- name: install the apt textfile collector script
+  when: ansible_pkg_mgr == "apt"
+  vars:
+    textfile_collector_name: "apt"
+  include_tasks: textfile_collector_script.yml
+
+- name: install all other textfile collector scripts
+  loop: "{{ prometheus_exporter_node_textfile_collector_scripts }}"
+  loop_control:
+    loop_var: textfile_collector_name
+  include_tasks: textfile_collector_script.yml
diff --git a/roles/monitoring/prometheus/exporter/node/tasks/textfile_collector_script.yml b/roles/monitoring/prometheus/exporter/node/tasks/textfile_collector_script.yml
new file mode 100644
index 00000000..1a39bb4c
--- /dev/null
+++ b/roles/monitoring/prometheus/exporter/node/tasks/textfile_collector_script.yml
@@ -0,0 +1,21 @@
+---
+- name: install the collector script
+  copy:
+    src: "{{ textfile_collector_name }}"
+    dest: "/usr/local/lib/prometheus-node-exporter/{{ textfile_collector_name }}"
+    mode: 0755
+
+- name: install systemd service units
+  loop:
+  - service
+  - timer
+  template:
+    src: "textfile-collector-scripts/{{ textfile_collector_name }}.{{ item }}.j2"
+    dest: "/etc/systemd/system/prometheus-node-exporter_{{ textfile_collector_name }}.{{ item }}"
+
+- name: make sure the systemd timer is enabled and started
+  systemd:
+    daemon_reload: yes
+    name: "prometheus-node-exporter_{{ textfile_collector_name }}.timer"
+    state: started
+    enabled: yes
-- 
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