Grafana and Alerting ( Ubuntu )

Installation

Components Required

sudo apt-get install -y apt-transport-https
sudo apt-get install -y software-properties-common wget
sudo wget -q -O /usr/share/keyrings/grafana.key https://apt.grafana.com/gpg.key

Adding Repositories

echo “deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main” | sudo tee -a /etc/apt/sources.list.d/grafana.list

Updating Packages

sudo apt-get update

Installing Grafana

sudo apt-get install grafana

Starting and enabling Grafana on startup

sudo systemctl enable grafana-server

sudo systemctl start grafana-server

Checking the status of Grafana server

sudo systemctl status grafana-server

Accessing Grafana dashboard

http://<server_IP>:3000

Dashboard View

Adding Data Source:

Inside the Dashboard of Grafana, Go to Menu Toggle, and select Data Sources

The Image below is the Data Sources view.

Click on add new data source and select one of the data source lists.

Adding Prometheus to Data Source

1. Add the Prometheus Server URL

2. Click on Save & test button

If the test failed, please check the firewall on port 9100

Importing Dashboard

When creating a dashboard, the user can use import function to load the visual uploaded from grafana dashboard open-source.

Below is the link

https://grafana.com/grafana/dashboards/

Alerting Configuration

Server Status

up == 0

CPU Usage

100 – (avg by (instance) (irate(node_cpu_seconds_total{cpu=”1″,mode=”idle”}[5m])) * 100)

Memory Usage

(node_memory_MemTotal_bytes)/1024/1024

(node_memory_MemTotal_bytes – node_memory_MemFree_bytes – node_memory_Buffers_bytes – node_memory_Cached_bytes – node_memory_SReclaimable_bytes)/1024/1024