Add node_explorer

main.yml

@@ -4,15 +4,16 @@
 #    - ssh
 #    - ubuntu
 #
-- hosts: prusa
-  roles:
-    - ssh
-    - octoprint
-    - ubuntu
-
-#- hosts: docker_cluster
+#- hosts: prusa
 #  roles:
 #    - ssh
+#    - octoprint
+#    - ubuntu
+
+- hosts: docker_cluster
+  roles:
+    - node_explorer
+#    - ssh
 #    - docker-cluster
 #    - ubuntu
 #
@@ -24,3 +25,6 @@
 #  roles:
 #    - router
 
+#- hosts: iron-man
+#  roles:
+#    - ssh

roles/node_explorer/files/lib/systemd/system/node_explorer.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=node_exporter
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+User=prometheus
+Group=prometheus
+Type=simple
+ExecStart=/usr/local/sbin/node_exporter
+
+[Install]
+WantedBy=multi-user.target

roles/node_explorer/tasks/account.yml

@@ -0,0 +1,10 @@
+---
+- name: create prometheus account
+  become: yes
+  user:
+    name: prometheus
+    comment: Octoprint account
+    system: yes
+    password_lock: yes
+    home: /nonexistent
+    create_home: no

roles/node_explorer/tasks/install.yml

@@ -0,0 +1,32 @@
+---
+- name: Create temp dir
+  file:
+    path: /tmp/node_exporter
+    state: directory
+
+- name: Download node-explorer
+  unarchive:
+    src: https://github.com/prometheus/node_exporter/releases/download/v{{version}}/node_exporter-{{version}}.linux-arm64.tar.gz
+    dest: /tmp/node_exporter
+    remote_src: yes
+    mode: 0755
+
+- name: get folder name
+  shell: ls /tmp/node_exporter
+  register: dir_name
+
+- name: Move to /usr/local/sbin
+  become: yes
+  command: cp -ra /tmp/node_exporter/{{ dir_name.stdout }}/node_exporter /usr/local/sbin/node_exporter
+
+- name: Remove temp directory
+  become: yes
+  file:
+    path: /tmp/node_exporter
+    state: absent
+
+- name: change chmod
+  become: yes
+  file:
+    path: /usr/local/bin/node_exporter
+    mode: '0755'

roles/node_explorer/tasks/main.yml

@@ -0,0 +1,6 @@
+---
+- import_tasks: account.yml
+
+- import_tasks: install.yml
+
+- import_tasks: service.yml

roles/node_explorer/tasks/service.yml

@@ -0,0 +1,13 @@
+---
+- become: yes
+  block:
+    - name: copy systemd service config
+      copy:
+        src: lib/systemd/system/node_explorer.service
+        dest: /lib/systemd/system/node_explorer.service
+
+    - name: enable systemd service
+      systemd:
+        name: node_explorer
+        enabled: yes
+        state: started

roles/node_explorer/vars/main.yml

@@ -0,0 +1,2 @@
+---
+version: 1.2.2