From 0b9b2a90d1768dee9bb9f8dc07eb4f15b9a64a23 Mon Sep 17 00:00:00 2001
From: Erik Stambaugh <erik@erikstambaugh.com>
Date: Mon, 3 Jan 2022 08:08:38 -0800
Subject: [PATCH] Add prometheus monitoring

---
 nextcloud.tf                                  |  9 ++++++--
 .../files/docker-compose.yaml                 | 23 +++++++++++++++++++
 roles/monitoring-client/tasks/main.yaml       | 19 +++++++++++++++
 site.yaml                                     |  1 +
 4 files changed, 50 insertions(+), 2 deletions(-)
 create mode 100644 roles/monitoring-client/files/docker-compose.yaml
 create mode 100644 roles/monitoring-client/tasks/main.yaml

diff --git a/nextcloud.tf b/nextcloud.tf
index e97fa76..7885959 100644
--- a/nextcloud.tf
+++ b/nextcloud.tf
@@ -88,12 +88,17 @@ module "nextcloud_sg" {
     {
       rule        = "http-80-tcp"
       cidr_blocks = "0.0.0.0/0"
-#      cidr_blocks = "${chomp(data.http.myip.body)}/32"
     },
     {
       rule        = "https-443-tcp"
       cidr_blocks = "0.0.0.0/0"
-#      cidr_blocks = "${chomp(data.http.myip.body)}/32"
+    },
+    {
+      from_port   = 9100
+      to_port     = 9100
+      protocol    = "tcp"
+      description = "Prometheus node-exporter"
+      cidr_blocks = "${chomp(data.http.myip.body)}/32"
     },
   ]
 }
diff --git a/roles/monitoring-client/files/docker-compose.yaml b/roles/monitoring-client/files/docker-compose.yaml
new file mode 100644
index 0000000..169c877
--- /dev/null
+++ b/roles/monitoring-client/files/docker-compose.yaml
@@ -0,0 +1,23 @@
+---
+version: "2"
+
+services:
+
+  prometheus-node-exporter:
+    image: prom/node-exporter:latest
+    container_name: prometheus-node-exporter
+    restart: unless-stopped
+    volumes:
+      - /proc:/host/proc:ro
+      - /sys:/host/sys:ro
+      - /:/rootfs:ro
+    command:
+      - '--path.procfs=/host/proc'
+      - '--path.rootfs=/rootfs'
+      - '--path.sysfs=/host/sys'
+      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
+    expose:
+      - 9100
+    ports:
+      - "9100:9100"
+
diff --git a/roles/monitoring-client/tasks/main.yaml b/roles/monitoring-client/tasks/main.yaml
new file mode 100644
index 0000000..9bf1749
--- /dev/null
+++ b/roles/monitoring-client/tasks/main.yaml
@@ -0,0 +1,19 @@
+---
+
+- name: create paths
+  file:
+    path: /srv/monitoring-client
+    state: directory
+    recurse: true
+
+- name: monitoring docker-compose
+  copy:
+    src: files/docker-compose.yaml
+    dest: /srv/monitoring-client/docker-compose.yaml
+  register: nginxconf
+
+- name: launch monitoring client
+  command: docker-compose up -d
+  args:
+    chdir: /srv/monitoring-client
+
diff --git a/site.yaml b/site.yaml
index b9944bb..d973ed3 100644
--- a/site.yaml
+++ b/site.yaml
@@ -12,5 +12,6 @@
   hosts: nextcloud
   roles:
   - { role: docker, become: yes }
+  - { role: monitoring-client, become: yes }
   - { role: nextcloud, become: yes }