From 914676d2093b1a87d4836ebf97fcf60503283db4 Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Thu, 4 Mar 2021 14:53:03 +0000
Subject: [PATCH] Add prometheus for metrics

---
 .../files/docker-compose-prometheus.yml       | 21 +++++++++++++++++++
 ansible/roles/forrest/handlers/main.yml       |  5 +++++
 ansible/roles/forrest/tasks/main.yml          |  3 +++
 ansible/roles/forrest/tasks/prometheus.yml    | 21 +++++++++++++++++++
 4 files changed, 50 insertions(+)
 create mode 100644 ansible/roles/forrest/files/docker-compose-prometheus.yml
 create mode 100644 ansible/roles/forrest/tasks/prometheus.yml

diff --git a/ansible/roles/forrest/files/docker-compose-prometheus.yml b/ansible/roles/forrest/files/docker-compose-prometheus.yml
new file mode 100644
index 0000000..005f06a
--- /dev/null
+++ b/ansible/roles/forrest/files/docker-compose-prometheus.yml
@@ -0,0 +1,21 @@
+version: "2.3"
+
+services:
+  prometheus:
+    image: prom/prometheus:latest
+    restart: unless-stopped
+    volumes:
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml
+      - /mnt/tank/dbs/prometheus/forrest/:/prometheus/
+    networks:
+      - default
+      - prometheus
+      - grafana
+    ports:
+      - "{{ protected_ip }}:9090:9090"
+
+networks:
+  prometheus:
+    external: true
+  grafana:
+    external: true
diff --git a/ansible/roles/forrest/handlers/main.yml b/ansible/roles/forrest/handlers/main.yml
index 59a394a..437255f 100644
--- a/ansible/roles/forrest/handlers/main.yml
+++ b/ansible/roles/forrest/handlers/main.yml
@@ -7,3 +7,8 @@
   shell:
     chdir: /opt/influxdb
     cmd: "{{ docker_update_command }}"
+
+- name: restart prometheus
+  shell:
+    chdir: /opt/prometheus
+    cmd: "{{ docker_update_command }}"
diff --git a/ansible/roles/forrest/tasks/main.yml b/ansible/roles/forrest/tasks/main.yml
index b264370..8b35f5a 100644
--- a/ansible/roles/forrest/tasks/main.yml
+++ b/ansible/roles/forrest/tasks/main.yml
@@ -3,3 +3,6 @@
 
 - name: InfluxDB
   include: influxdb.yml
+
+- name: Prometheus
+  include: prometheus.yml
diff --git a/ansible/roles/forrest/tasks/prometheus.yml b/ansible/roles/forrest/tasks/prometheus.yml
new file mode 100644
index 0000000..3d6c27c
--- /dev/null
+++ b/ansible/roles/forrest/tasks/prometheus.yml
@@ -0,0 +1,21 @@
+- name: Create network
+  docker_network:
+    name: prometheus
+
+- name: Create prometheus install directory
+  file:
+    path: /opt/prometheus
+    state: directory
+    owner: "{{ docker_user.name }}"
+    mode: "{{ docker_compose_directory_mask }}"
+  become: true
+
+- name: Install prometheus compose file
+  template:
+    src: files/docker-compose-prometheus.yml
+    dest: /opt/prometheus/docker-compose.yml
+    mode: "{{ docker_compose_file_mask }}"
+    owner: "{{ docker_user.name }}"
+    validate: docker-compose -f %s config
+  notify: restart prometheus
+  become: true