From be04f2d74fc82d47f719371899adc186d7973c96 Mon Sep 17 00:00:00 2001
From: Ludovic Cartier <ludovic.cartier@alterwayfr>
Date: Wed, 26 May 2021 18:23:12 +0200
Subject: [PATCH] automaticaly get release version from github

---
 defaults/main.yml             |  4 ---
 tasks/mongodb_exporter.yml    | 49 +++++++++++++++++++---------------
 tasks/mysqld_exporter.yml     | 50 ++++++++++++++++++++---------------
 tasks/node_exporter.yml       | 50 +++++++++++++++++++----------------
 tasks/postgresql_exporter.yml | 49 +++++++++++++++++++---------------
 5 files changed, 109 insertions(+), 93 deletions(-)

diff --git a/defaults/main.yml b/defaults/main.yml
index a7df715..ed97d53 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,5 +1 @@
 ---
-prometheus_node_exporter_version: '1.1.2'
-prometheus_mysqld_exporter_version: '0.12.1'
-prometheus_postgres_exporter_version: '0.9.0'
-prometheus_mongodb_exporter_version: '0.20.4'
diff --git a/tasks/mongodb_exporter.yml b/tasks/mongodb_exporter.yml
index 2d00cf4..5c9a6b4 100644
--- a/tasks/mongodb_exporter.yml
+++ b/tasks/mongodb_exporter.yml
@@ -1,4 +1,31 @@
 ---
+- name: 'prometheus | mongodb exporter | get latest release from GitHub'
+  shell: curl --silent "https://api.github.com/repos/percona/mongodb_exporter/releases/latest" | jq -r .tag_name | sed "s/v//"
+  register: prometheus_mongodb_exporter_version
+  run_once: true
+
+- name: 'prometheus | mongodb exporter | download'
+  get_url:
+    url: https://github.com/percona/mongodb_exporter/releases/download/v{{ prometheus_mongodb_exporter_version.stdout }}/mongodb_exporter-{{ prometheus_mongodb_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | mongodb exporter | unarchive'
+  unarchive:
+    remote_src: yes
+    src: /tmp/mongodb_exporter-{{ prometheus_mongodb_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | mongodb exporter | move to /usr/local/bin'
+  copy:
+    src: /tmp/mongodb_exporter-{{ prometheus_mongodb_exporter_version.stdout }}.linux-amd64/mongodb_exporter
+    dest: /usr/local/bin/prometheus-mongodb-exporter
+    remote_src: yes
+    owner: root
+    group: root
+    mode: 0755
+  notify:
+    - 'prometheus | mongodb exporter | restart service'
+
 - name: 'prometheus | mongodb exporter | install unit file to systemd'
   template:
     src: systemd/prometheus-mongodb-exporter.service.j2
@@ -11,29 +38,8 @@
   systemd:
     daemon_reload: yes
     enabled: yes
-    state: started
     name: prometheus-mongodb-exporter.service
 
-- name: 'prometheus | mongodb exporter | download'
-  get_url:
-    url: https://github.com/percona/mongodb_exporter/releases/download/v{{ prometheus_mongodb_exporter_version }}/mongodb_exporter-{{ prometheus_mongodb_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | mongodb exporter | unarchive'
-  unarchive:
-    remote_src: yes
-    src: /tmp/mongodb_exporter-{{ prometheus_mongodb_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | mongodb exporter | move to /usr/local/bin'
-  copy:
-    src: /tmp/mongodb_exporter-{{ prometheus_mongodb_exporter_version }}.linux-amd64/mongodb_exporter
-    dest: /usr/local/bin/prometheus-mongodb-exporter
-    remote_src: yes
-    owner: root
-    group: root
-    mode: 0755
-
 - name: 'prometheus | mongodb exporter | configuration'
   template:
     src: prometheus-mongodb-exporter.conf.j2
@@ -43,4 +49,3 @@
     mode: 0600
   notify:
     - 'prometheus | mongodb exporter | restart service'
-
diff --git a/tasks/mysqld_exporter.yml b/tasks/mysqld_exporter.yml
index 47ec156..0e2ddb7 100644
--- a/tasks/mysqld_exporter.yml
+++ b/tasks/mysqld_exporter.yml
@@ -1,4 +1,31 @@
 ---
+- name: 'prometheus | mysqld exporter | get latest release from GitHub'
+  shell: curl --silent "https://api.github.com/repos/prometheus/mysqld_exporter/releases/latest" | jq -r .tag_name | sed "s/v//"
+  register: prometheus_mysqld_exporter_version
+  run_once: true
+
+- name: 'prometheus | mysqld exporter | download'
+  get_url:
+    url: https://github.com/prometheus/mysqld_exporter/releases/download/v{{ prometheus_mysqld_exporter_version.stdout }}/mysqld_exporter-{{ prometheus_mysqld_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | mysqld exporter | unarchive'
+  unarchive:
+    remote_src: yes
+    src: /tmp/mysqld_exporter-{{ prometheus_mysqld_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | mysqld exporter | move to /usr/local/bin'
+  copy:
+    src: /tmp/mysqld_exporter-{{ prometheus_mysqld_exporter_version.stdout }}.linux-amd64/mysqld_exporter
+    dest: /usr/local/bin/prometheus-mysqld-exporter
+    remote_src: yes
+    owner: root
+    group: root
+    mode: 0755
+  notify:
+    - 'prometheus | mysqld exporter | restart service'
+
 - name: 'prometheus | mysqld exporter | install unit file to systemd'
   template:
     src: systemd/prometheus-mysqld-exporter.service.j2
@@ -13,26 +40,6 @@
     enabled: yes
     name: prometheus-mysqld-exporter.service
 
-- name: 'prometheus | mysqld exporter | download'
-  get_url:
-    url: https://github.com/prometheus/mysqld_exporter/releases/download/v{{ prometheus_mysqld_exporter_version }}/mysqld_exporter-{{ prometheus_mysqld_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | mysqld exporter | unarchive'
-  unarchive:
-    remote_src: yes
-    src: /tmp/mysqld_exporter-{{ prometheus_mysqld_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | mysqld exporter | move to /usr/local/bin'
-  copy:
-    src: /tmp/mysqld_exporter-{{ prometheus_mysqld_exporter_version }}.linux-amd64/mysqld_exporter
-    dest: /usr/local/bin/prometheus-mysqld-exporter
-    remote_src: yes
-    owner: root
-    group: root
-    mode: 0755
-
 - name: 'prometheus | mysqld exporter | configuration'
   copy:
     dest: '/var/lib/prometheus/.my.cnf'
@@ -44,9 +51,8 @@
       [client]
       user={{ prometheus_mysqld_exporter_user }}
       password={{ prometheus_mysqld_exporter_password }}
-  when: 
+  when:
     - prometheus_mysqld_exporter_user is defined
   register: prometheus_mysqld_exporter_configuration
   notify:
     - 'prometheus | mysqld exporter | restart service'
-
diff --git a/tasks/node_exporter.yml b/tasks/node_exporter.yml
index 0897616..da5678d 100644
--- a/tasks/node_exporter.yml
+++ b/tasks/node_exporter.yml
@@ -1,4 +1,31 @@
 ---
+- name: 'prometheus | node exporter | get latest release from GitHub'
+  shell: curl --silent "https://api.github.com/repos/prometheus/node_exporter/releases/latest" | jq -r .tag_name | sed "s/v//"
+  register: prometheus_node_exporter_version
+  run_once: true
+
+- name: 'prometheus | node exporter | download'
+  get_url:
+    url: https://github.com/prometheus/node_exporter/releases/download/v{{ prometheus_node_exporter_version.stdout }}/node_exporter-{{ prometheus_node_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | node exporter | unarchive'
+  unarchive:
+    remote_src: yes
+    src: /tmp/node_exporter-{{ prometheus_node_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | node exporter | move to /usr/local/bin'
+  copy:
+    src: /tmp/node_exporter-{{ prometheus_node_exporter_version.stdout }}.linux-amd64/node_exporter
+    dest: /usr/local/bin/prometheus-node-exporter
+    remote_src: yes
+    owner: root
+    group: root
+    mode: 0755
+  notify:
+    - 'prometheus | node exporter | restart service'
+
 - name: 'prometheus | node exporter | install unit file to systemd'
   template:
     src: systemd/prometheus-node-exporter.service.j2
@@ -12,26 +39,3 @@
     daemon_reload: yes
     enabled: yes
     name: prometheus-node-exporter.service
-
-- name: 'prometheus | node exporter | download'
-  get_url:
-    url: https://github.com/prometheus/node_exporter/releases/download/v{{ prometheus_node_exporter_version }}/node_exporter-{{ prometheus_node_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | node exporter | unarchive'
-  unarchive:
-    remote_src: yes
-    src: /tmp/node_exporter-{{ prometheus_node_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | node exporter | move to /usr/local/bin'
-  copy:
-    src: /tmp/node_exporter-{{ prometheus_node_exporter_version }}.linux-amd64/node_exporter
-    dest: /usr/local/bin/prometheus-node-exporter
-    remote_src: yes
-    owner: root
-    group: root
-    mode: 0755
-  notify:
-    - 'prometheus | node exporter | restart service'
-
diff --git a/tasks/postgresql_exporter.yml b/tasks/postgresql_exporter.yml
index 5471a32..0ad972f 100644
--- a/tasks/postgresql_exporter.yml
+++ b/tasks/postgresql_exporter.yml
@@ -1,4 +1,31 @@
 ---
+- name: 'prometheus | postgres exporter | get latest release from GitHub'
+  shell: curl --silent "https://api.github.com/repos/prometheus-community/postgres_exporter/releases/latest" | jq -r .tag_name | sed "s/v//"
+  register: prometheus_postgres_exporter_version
+  run_once: true
+
+- name: 'prometheus | postgres exporter | download'
+  get_url:
+    url: https://github.com/prometheus-community/postgres_exporter/releases/download/v{{ prometheus_postgres_exporter_version.stdout }}/postgres_exporter-{{ prometheus_postgres_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | postgres exporter | unarchive'
+  unarchive:
+    remote_src: yes
+    src: /tmp/postgres_exporter-{{ prometheus_postgres_exporter_version.stdout }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | postgres exporter | move to /usr/local/bin'
+  copy:
+    src: /tmp/postgres_exporter-{{ prometheus_postgres_exporter_version.stdout }}.linux-amd64/postgres_exporter
+    dest: /usr/local/bin/prometheus-postgres-exporter
+    remote_src: yes
+    owner: root
+    group: root
+    mode: 0755
+  notify:
+    - 'prometheus | postgres exporter | restart service'
+
 - name: 'prometheus | postgres exporter | install unit file to systemd'
   template:
     src: systemd/prometheus-postgres-exporter.service.j2
@@ -7,7 +34,6 @@
     group: root
     mode: 0600
 
-
 - name: 'prometheus | postgres exporter | configure systemd to use service'
   systemd:
     daemon_reload: yes
@@ -15,26 +41,6 @@
     state: started
     name: prometheus-postgres-exporter.service
 
-- name: 'prometheus | postgres exporter | download'
-  get_url:
-    url: https://github.com/prometheus-community/postgres_exporter/releases/download/v{{ prometheus_postgres_exporter_version }}/postgres_exporter-{{ prometheus_postgres_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | postgres exporter | unarchive'
-  unarchive:
-    remote_src: yes
-    src: /tmp/postgres_exporter-{{ prometheus_postgres_exporter_version }}.linux-amd64.tar.gz
-    dest: /tmp
-
-- name: 'prometheus | postgres exporter | move to /usr/local/bin'
-  copy:
-    src: /tmp/postgres_exporter-{{ prometheus_postgres_exporter_version }}.linux-amd64/postgres_exporter
-    dest: /usr/local/bin/prometheus-postgres-exporter
-    remote_src: yes
-    owner: root
-    group: root
-    mode: 0755
-
 - name: 'prometheus | postgres exporter | configuration'
   copy:
     dest: '/etc/default/prometheus-postgres-exporter'
@@ -53,4 +59,3 @@
   register: prometheu_postgres_exporter_configuration
   notify:
     - 'prometheus | postgres exporter | restart service'
-