Docker container for Observium Community Edition

Observium is a Network Monitoring system that uses SNMP to discover details about each host and display graphs about memory, CPU and other details. Find more information at http://www.observium.org.

This Docker image is multi architecture. Supported archtictures include:

• amd64 ("normal PC)
• arm64 (Raspberry Pi 4 or newer running "real" OS like Ubuntu)

Further architectures on request.

Sources

• Source Code https://github.com/dkrizic/docker-observium
• Docker images https://hub.docker.com/repository/docker/dkrizic/observium/

Installation

I am using the Docker image on a hybrid Kubernetes cluster so I prepared

• This Docker image
• A Helm chart

This allows the installation of Observium on Kubernetes and expose it using an Ingress Controller.

Requirements

• A Kubernetes cluster with amd64 or arm64 nodes (or any combination of that)
• An installed Ingress Controller

Helm Chart

I created a Helm Chart for deploying Observium into a Kubernetes cluster which can be found here https://github.com/dkrizic/charts/tree/main/charts/observium

Preparation

Create namespace using

kubectl create namespace observium

Install MariaDB

Create a configuration file mariadb.yaml

userDatabase:
  name: observium
  user: observium
  password: passw0rd
  rootPassword: observium
storage:
  requestedSize: 10Gi
nodeSelector:
  kubernetes.io/arch: arm64

Change accordingly to you environment. The run

helm repo add groundhog2k https://groundhog2k.github.io/helm-charts/
helm repo update
helm -n observium upgrade --install observium-mariadb -f mariadb.yaml groundhog2k/mariadb

You should now have MariaDB up an running with is available as mysql://observium-mariadb:3306 inside the cluster which has a database observium preconfigured.

Install Obserivum

Create a configuration file observium.yaml

nodeSelector:
  kubernetes.io/arch: arm64
ingress:
  enabled: true
  hosts:
    - host: observium.krizic.net
      paths: 
      - path: "/"
observium:
  base_url: https://observium.example.com
  server_name: observium.example.com
  tz: "Europe/Berlin"
  admin:
    user: admin
    password: verySecretPassword
  db:
    host: observium-mariadb
    user: observium
    password: passw0rd
    name: observium

persistence:
  rrd:
    size: 20Gi
    storageClassName: rook-ceph-block-csi
  logs:
    size: 20Gi
    storageClassName: rook-ceph-block-csi
resources:
  requests:
    cpu: 1500m
  limits:
    cpu: 2800m

Note that the entries unter observium.db must match the entries from MariaDB in order to connect property. Also change the hostname to your own hostname. In this case observium should be available as https://observium.example.com. Now run

helm repo add dkrizic https://dkrizic.github.io/charts
helm repo update
helm -n observium upgrade --install observium -f observium.yaml dkrizic/observium

to install Observium. Enjoy.

Changelog

• 2021-05-23: First version, contains Observium CE 10731

Credits

This repository was forked from https://github.com/somsakc/docker-observium by https://github.com/somsakc/.