update

Author: aswin-vijayan

03-scalable-java-app/ansible/roles/java/tasks/main.yml

@@ -1,4 +1,5 @@
 ---
   - include_tasks: java.yml
   - include_tasks: python.yml
-  - include_tasks: cloudwatch.yml
+  - include_tasks: cloudwatch.yml
+  - include_tasks: node_exporter.yml

03-scalable-java-app/ansible/roles/java/tasks/node_exporter.yml

@@ -0,0 +1,42 @@
+---
+    - name: Download node_exporter
+      get_url:
+        url: "https://github.com/prometheus/node_exporter/releases/download/v1.5.0/node_exporter-1.5.0.linux-amd64.tar.gz"
+        dest: "/tmp/node_exporter-1.5.0.linux-amd64.tar.gz"
+
+    - name: Extract node_exporter
+      unarchive:
+        src: "/tmp/node_exporter-1.5.0.linux-amd64.tar.gz"
+        dest: "/tmp/"
+        remote_src: yes
+    
+    - name: Move file
+      command:
+        cmd: mv /tmp/node_exporter-1.5.0.linux-amd64/node_exporter /usr/local/bin
+
+    - name: Create new group
+      group:
+        name: node_exporter
+        state: present
+        system: true
+
+    - name: Create new user and add to new group
+      user:
+        name: node_exporter
+        state: present
+        system: true
+        group: node_exporter
+        shell: /bin/bash
+        createhome: yes
+
+    - name: Create node_exporter service file
+      template:
+        src: "node_exporter.service.j2"
+        dest: "/etc/systemd/system/node_exporter.service"
+    
+    - name: Start service
+      shell: |
+        sudo systemctl daemon-reload
+        sudo systemctl start node_exporter
+        sudo systemctl enable node_exporter
+   

03-scalable-java-app/ansible/templates/node_exporter.service.j2

@@ -0,0 +1,12 @@
+[Unit]
+Description=Node Exporter
+After=network.target
+
+[Service]
+User=node_exporter
+Group=node_exporter
+Type=simple
+ExecStart=/usr/local/bin/node_exporter
+
+[Install]
+WantedBy=multi-user.target