library/roles/prometheus-node-exporter: Playbook that installs the prometheus node exporter.

prometheus-node-exporter/defaults/main.yml

@@ -3,7 +3,7 @@ prometheus_n_e_install: True
 prometheus_n_e_version: 0.15.2
 prometheus_n_e_dir: 'node_exporter-{{ prometheus_n_e_version }}.linux-amd64'
 prometheus_n_e_file: '{{ prometheus_n_e_dir }}.tar.gz'
-prometheus_n_e_download_url: 'https://github.com/prometheus/prometheus/releases/download/v{{ prometheus_n_e_version }}/{{ prometheus_n_e_file }}'
+prometheus_n_e_download_url: 'https://github.com/prometheus/node_exporter/releases/download/v{{ prometheus_n_e_version }}/{{ prometheus_n_e_file }}'
 prometheus_n_e_user: prometheus
 prometheus_n_e_home: /opt/prometheus
 prometheus_n_e_dist_dir: '{{ prometheus_n_e_home }}/dist'
@@ -11,6 +11,6 @@ prometheus_n_e_logdir: '/var/log/prometheus-node-exporter'
 prometheus_n_e_cmd: '{{ prometheus_n_e_dist_dir }}/{{ prometheus_n_e_dir }}/node_exporter'
 prometheus_n_e_port: 9100
 prometheus_n_e_loglevel: info
-prometheus_n_e_opts: '--web.listen-address=":{{ prometheus_n_e_port }} --log.level={{ prometheus_n_e_loglevel }}'
+prometheus_n_e_opts: '--web.listen-address=":{{ prometheus_n_e_port }}" --log.level={{ prometheus_n_e_loglevel }}'
 # List the additional options here
 prometheus_n_e_additional_opts: ''

prometheus-node-exporter/handlers/main.yml

@@ -1,3 +1,7 @@
 ---
 - name: systemd reload
   command: systemctl daemon-reload
+
+- name: Restart node exporter
+  service: name=node_exporter state=restarted
+  

prometheus-node-exporter/tasks/main.yml

@@ -16,7 +16,7 @@
       get_url: url={{ prometheus_n_e_download_url }} dest=/srv/
 
     - name: Unarchive the prometheus distribution
-      unarchive: src=/srv/{{ prometheus_n_e_file }} dest={{ prometheus_n_e_dist_dir }} remote_src=yes 
+      unarchive: src=/srv/{{ prometheus_n_e_file }} dest={{ prometheus_n_e_dist_dir }} remote_src=yes owner=root group=root
       args:
         creates: '{{ prometheus_n_e_dist_dir }}/{{ prometheus_n_e_dir }}/node_exporter'
       notify: Restart node exporter

prometheus-node-exporter/templates/node_exporter.upstart.j2

@@ -8,5 +8,5 @@ setuid {{ prometheus_n_e_user }}
 setgid {{ prometheus_n_e_user }}
 
 script
-  exec {{ prometheus_n_e_cmd }}  {{ prometheus_n_e_opts }} {{ prometheus_n_e_additional_opts }} > {{ prometheus_n_e_logdir }}/node_exporter.log 2>&1
+  exec {{ prometheus_n_e_cmd }} {{ prometheus_n_e_opts }} {{ prometheus_n_e_additional_opts }} > {{ prometheus_n_e_logdir }}/node_exporter.log 2>&1
 end script