feat: リモートEC2にNode Exporter入れて、ローカルのGrafana/prometheusで監視対象のデータを確認する

.gitignore

@@ -39,7 +39,7 @@ yarn-error.log*
 next-env.d.ts
 
 
-
+prometheus.yml
 
 #Terraform関係
 # Local .terraform directories

.tf/network.tf

@@ -81,6 +81,19 @@ resource "aws_security_group" "sg" {
  cidr_blocks = ["0.0.0.0/0"]
  }
 
+ ingress {
+ from_port = 3000
+ to_port = 3000
+ protocol = "tcp"
+ cidr_blocks = ["0.0.0.0/0"] #Next.js用
+ }
+ ingress {
+ from_port = 9100
+ to_port = 9100
+ protocol = "tcp"
+ cidr_blocks = ["0.0.0.0/0"] # Node Exporter用
+ }
+
  #アウトバウンドルール
  egress {
  from_port = 0

.tf/setup_nextjs.yml

@@ -1,9 +1,14 @@
 ---
 - hosts: all
+#- hosts: localhost
  become: yes #権限昇格してsudo使えるようにする
  vars:
  node_version: "18.14.1"
  project_path: "/home/ec2-user/nextjs-responsive-clear"
+ node_exporter_version: "1.5.0"
+ node_exporter_arch: "linux-amd64"
+ node_exporter_download_url: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.{{ node_exporter_arch }}.tar.gz"
+
  tasks:
  - name: hello
  shell: echo "hello"
@@ -16,13 +21,47 @@
  # ansible.builtin.shell: amazon-linux-extras enable nginx1
  # changed_when: false
 
-
-
- - name: Install Node.js repository
- shell: |
- sudo yum install -y gcc-c++ make
- curl -sL https://deb.nodesource.com/setup_{{ node_version }} | sudo -E bash -
- yum install -y nodejs
+
+ - name: Node Exporterユーザーを作成
+ user:
+ name: node_exporter
+ system: yes
+ shell: /sbin/nologin
+ create_home: no
+
+ - name: Node Exporterをダウンロードして解凍
+ unarchive:
+ src: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.{{ node_exporter_arch }}.tar.gz"
+ dest: /tmp
+ remote_src: yes # リモートからダウンロード
+
+ - name: Node Exporterバイナリを移動
+ copy:
+ src: "/tmp/node_exporter-{{ node_exporter_version }}.{{ node_exporter_arch }}/node_exporter"
+ dest: /usr/local/bin/node_exporter
+ owner: node_exporter
+ group: node_exporter
+ mode: '0755'
+ remote_src: yes # リモートファイルをコピー
+
+ - name: Node Exporterのsystemdサービスファイルを作成
+ template:
+ src: node_exporter.service.j2 # テンプレートファイル（別途作成が必要）
+ dest: /etc/systemd/system/node_exporter.service
+ mode: '0644'
+
+ - name: systemdをリロード
+ systemd:
+ daemon_reload: yes
+
+ - name: Node Exporterサービスを有効化して起動
+ systemd:
+ name: node_exporter
+ state: started
+ enabled: yes
+
+
+
 
  - name: Install Node.js and npm
  yum:
@@ -125,3 +164,4 @@
 # poll: 0
 # args:
 # chdir: /home/ec2-user/my-next-app
+

.tf/templates/node_exporter.service.j2

@@ -0,0 +1,13 @@
+[Unit]
+Description=Node Exporter
+After=network.target
+
+[Service]
+User=node_exporter
+Group=node_exporter
+Type=simple
+ExecStart=/usr/local/bin/node_exporter
+Restart=always
+
+[Install]
+WantedBy=multi-user.target