add random generator

Author: paulfantom

extras.yml

@@ -130,3 +130,50 @@
         tls paulfantom@gmail.com
       }
       {% endfor %}
+
+- name: Setup random number exporter
+  hosts: web
+  tasks:
+  - name: Locally build random_exporter
+    shell: |
+      go get github.com/prometheus/client_golang/examples/random
+      mv $GOPATH/bin/random /tmp/random_exporter
+    creates: /tmp/random_exporter
+    delegate_to: localhost
+    run_once: true
+  - name: Copy random_exporter binary
+    copy:
+      src: random
+      dest: /usr/local/bin/random_exporter
+      owner: root
+      group: root
+      mode: 0755
+    notify: random_exporter restart
+  - name: Copy systemd service file
+    copy:
+      dest: /etc/systemd/system/random_exporter.service
+      mode: 0644
+      content: "{{ random_exporter_systemd_service }}"
+    notify: random_exporter restart
+  handlers:
+  - name: random_exporter restart
+    systemd:
+      name: random_exporter
+      state: started
+      daemon_reload: true
+      enabled: true
+  vars:
+    random_exporter_systemd_service: |
+      # Ansible managed
+      [Unit]
+      Description=Random Metrics Exporter
+      After=network.target
+      [Service]
+      Type=simple
+      User=nobody
+      Group=nogroup
+      ExecStart=/usr/local/bin/random_exporter -listen-address=:8999
+      SyslogIdentifier=random_exporter
+      Restart=always
+      [Install]
+      WantedBy=multi-user.target