From 89c73cbfa4ada30e65275e602635cb6faf2dbb08 Mon Sep 17 00:00:00 2001
From: Thomas Kleinendorst <thomas@kleinendorst.info>
Date: Wed, 15 Jan 2025 13:38:01 +0100
Subject: [PATCH] Add cAdvisor and Prometheus integration

---
 roles/monitoring/tasks/main.yml         | 39 +++++++++++++++++++++++++
 roles/monitoring/vars/main/defaults.yml |  7 +++++
 versions.yml                            |  2 ++
 3 files changed, 48 insertions(+)

diff --git a/roles/monitoring/tasks/main.yml b/roles/monitoring/tasks/main.yml
index f40746a..70c94b0 100644
--- a/roles/monitoring/tasks/main.yml
+++ b/roles/monitoring/tasks/main.yml
@@ -1,4 +1,43 @@
 ---
+- name: Install the container
+  become: true
+  community.docker.docker_container:
+    name: cadvisor
+    image: "gcr.io/cadvisor/cadvisor:{{ versions.monitoring.cAdvisor }}"
+    image_name_mismatch: recreate
+    ports:
+      - "127.0.0.1:8091:8080/tcp"
+    mounts:
+      - source: /
+        target: /rootfs
+        read_only: true
+        type: bind
+      - source: /var/run
+        target: /var/run
+        read_only: true
+        type: bind
+      - source: /sys
+        target: /sys
+        read_only: true
+        type: bind
+      - source: /var/lib/docker/
+        target: /var/lib/docker
+        read_only: true
+        type: bind
+      - source: /dev/disk/
+        target: /dev/disk
+        read_only: true
+        type: bind
+    privileged: true
+    devices:
+      - /dev/kmsg
+    restart_policy: always
+- name: Include simple-reverse-proxy role
+  ansible.builtin.include_role:
+    name: simple-reverse-proxy
+  vars:
+    simple_reverse_proxy_internal_port: 8091
+    simple_reverse_proxy_internal_subdomain: cadvisor
 - name: Include the Prometheus role
   ansible.builtin.include_role:
     name: prometheus.prometheus.prometheus
diff --git a/roles/monitoring/vars/main/defaults.yml b/roles/monitoring/vars/main/defaults.yml
index b68f331..3cd2265 100644
--- a/roles/monitoring/vars/main/defaults.yml
+++ b/roles/monitoring/vars/main/defaults.yml
@@ -14,6 +14,9 @@ prometheus_targets:
   postgres:
     - targets:
         - raspberry-pi-1.kleinendorst.info:9187
+  cadvisor:
+    - targets:
+        - raspberry-pi-1.kleinendorst.info:8091
 prometheus_web_listen_address: 127.0.0.1:9090
 prometheus_scrape_configs:
   - job_name: "prometheus"
@@ -32,6 +35,10 @@ prometheus_scrape_configs:
     file_sd_configs:
       - files:
           - "{{ prometheus_config_dir }}/file_sd/postgres.yml"
+  - job_name: "cadvisor"
+    file_sd_configs:
+      - files:
+          - "{{ prometheus_config_dir }}/file_sd/cadvisor.yml"
 prometheus_alertmanager_config:
   - static_configs:
       - targets:
diff --git a/versions.yml b/versions.yml
index 7de42d1..15f20f6 100644
--- a/versions.yml
+++ b/versions.yml
@@ -12,6 +12,8 @@ versions:
   # Changelog: https://github.com/immich-app/immich/releases
   immich: v1.124.2
   monitoring:
+    # Releases: https://github.com/google/cadvisor/releases/
+    cAdvisor: v0.49.2
     # Changelog: https://github.com/prometheus/prometheus/blob/main/CHANGELOG.md
     # Note that version 3.0.0 was just released, upgrading is probably necessary.
     prometheus: 3.0.1