From 15a1bcbe9f8d1cc65fb5e4787e71cc5f89226f84 Mon Sep 17 00:00:00 2001
From: Sheppy <sheppy@atlantishq.de>
Date: Tue, 3 Jan 2023 21:49:28 +0100
Subject: [PATCH] feat: collectd/influx role

---
 playbook.yaml                                 |  3 +-
 roles/global-handlers/handlers/main.yml       | 10 ++++++
 roles/monitoring-influx/meta/main.yml         |  2 ++
 roles/monitoring-influx/tasks/main.yaml       | 31 +++++++++++++++++
 .../templates/collectd.conf.j2                | 34 +++++++++++++++++++
 .../templates/influxdb.conf.j2                | 29 ++++++++++++++++
 6 files changed, 108 insertions(+), 1 deletion(-)
 create mode 100644 roles/monitoring-influx/meta/main.yml
 create mode 100644 roles/monitoring-influx/tasks/main.yaml
 create mode 100644 roles/monitoring-influx/templates/collectd.conf.j2
 create mode 100644 roles/monitoring-influx/templates/influxdb.conf.j2

diff --git a/playbook.yaml b/playbook.yaml
index 3a7f5b5..bc20eca 100644
--- a/playbook.yaml
+++ b/playbook.yaml
@@ -4,7 +4,8 @@
     - { role : monitoring-client, tags : [ "monitoring", "monitoring-client", "client"] }
     - { role : sshd-config,       tags : [ "sshd" ] }
     - { role : rsyslog, 	      tags : [ "rsyslog" ] }
+    - { role : monitoring-influx, tags : [ "influx" ] }
 
 - hosts: monitoring
   roles:
-    - monitoring-master
+    - { role : monitoring-master, tags : [ "monitoring-master" ] }
diff --git a/roles/global-handlers/handlers/main.yml b/roles/global-handlers/handlers/main.yml
index 973b02c..b55b5fb 100644
--- a/roles/global-handlers/handlers/main.yml
+++ b/roles/global-handlers/handlers/main.yml
@@ -9,3 +9,13 @@
   systemd:
     name: rsyslog
     state: restarted
+
+- name: restart collectd
+  systemd:
+    name: collectd
+    state: restarted
+
+- name: restart influxdb
+  systemd:
+    name: influxdb
+    state: restarted
diff --git a/roles/monitoring-influx/meta/main.yml b/roles/monitoring-influx/meta/main.yml
new file mode 100644
index 0000000..c808c92
--- /dev/null
+++ b/roles/monitoring-influx/meta/main.yml
@@ -0,0 +1,2 @@
+dependencies:
+    - global-handlers
diff --git a/roles/monitoring-influx/tasks/main.yaml b/roles/monitoring-influx/tasks/main.yaml
new file mode 100644
index 0000000..d6e32fb
--- /dev/null
+++ b/roles/monitoring-influx/tasks/main.yaml
@@ -0,0 +1,31 @@
+- name: Install influxdb
+  apt:
+    name: influxdb
+    state: present
+  when: monitoring_master
+
+- name: Influxdb master server config
+  template:
+    src: influxdb.conf.j2
+    dest: /etc/influxdb/influxdb.conf
+  when: monitoring_master
+  notify:
+    - restart influxdb
+
+- name: Create Influx collectd-db
+  shell: 'echo "CREATE DATABASE collectd;" | influx'
+  changed_when: False
+  when: monitoring_master
+
+- name: Install collectd
+  apt:
+    name: collectd
+    install_recommends: false
+    state: present
+
+- name: Collectd config
+  template:
+    src: collectd.conf.j2
+    dest: /etc/collectd/collectd.conf
+  notify:
+    - restart collectd
diff --git a/roles/monitoring-influx/templates/collectd.conf.j2 b/roles/monitoring-influx/templates/collectd.conf.j2
new file mode 100644
index 0000000..5df4889
--- /dev/null
+++ b/roles/monitoring-influx/templates/collectd.conf.j2
@@ -0,0 +1,34 @@
+FQDNLookup true
+LoadPlugin cpu
+LoadPlugin df
+LoadPlugin disk
+LoadPlugin entropy
+LoadPlugin interface
+LoadPlugin irq
+LoadPlugin load
+LoadPlugin memory
+LoadPlugin network
+LoadPlugin processes
+LoadPlugin swap
+LoadPlugin users
+LoadPlugin rrdtool
+<Plugin df>
+	FSType rootfs
+	FSType sysfs
+	FSType proc
+	FSType devtmpfs
+	FSType devpts
+	FSType tmpfs
+	FSType fusectl
+	FSType cgroup
+	IgnoreSelected true
+</Plugin>
+<Plugin network>
+	Server "internal.monitoring.atlantishq.de" "25826"
+</Plugin>
+<Plugin rrdtool>
+	DataDir "/var/lib/collectd/rrd"
+</Plugin>
+<Include "/etc/collectd/collectd.conf.d">
+	Filter "*.conf"
+</Include>
diff --git a/roles/monitoring-influx/templates/influxdb.conf.j2 b/roles/monitoring-influx/templates/influxdb.conf.j2
new file mode 100644
index 0000000..aac96e9
--- /dev/null
+++ b/roles/monitoring-influx/templates/influxdb.conf.j2
@@ -0,0 +1,29 @@
+[meta]
+
+  dir = "/var/lib/influxdb/meta"
+
+[data]
+
+  dir = "/var/lib/influxdb/data"
+  wal-dir = "/var/lib/influxdb/wal"
+
+[[collectd]]
+
+  enabled = true
+  bind-address = ":25826"
+  database = "collectd"
+  retention-policy = ""
+
+  # security-level = "none"
+  # auth-file = "/etc/collectd/auth_file"
+
+  batch-size = 5000
+  batch-pending = 10
+  batch-timeout = "10s"
+  read-buffer = 0
+
+  # Multi-value plugins can be handled two ways.
+  # "split" will parse and store the multi-value plugin data into separate measurements
+  # "join" will parse and store the multi-value plugin as a single multi-value measurement.
+  # "split" is the default behavior for backward compatability with previous versions of influxdb.
+  # parse-multivalue-plugin = "split"