How to Install Grafana for System Monitoring on Ubuntu 18.04

Grafana is an open source software for analytics and monitoring that supports more than 30 data sources. Previously I installed Prometheus on the Ubuntu server and the data will be visualized on Grafana.

*0.Install Grafana*

Download the GPG key and add the Grafana repository.

[INPUT]

1 2 wget -q -O – https://packages.grafana.com/gpg.key | apt-key add – add-apt-repository “deb https://packages.grafana.com/oss/deb stable main”

Install Grafana.

[INPUT]

1 apt install grafana -y

Activate grafana-server.

[INPUT]

1 2 3 systemctl enable grafana-server systemctl start grafana-server systemctl status grafana-server

*1.Disable Anonymous Registration and Access*

Open the Grafana configuration file.

[INPUT]

1 nano /etc/grafana/grafana.ini

Look for *allow_sign_up* under *[users]*, remove *;* then fill in the value to *false*.

[INPUT]

1 2 3 4 5 … [users] # disable user signup / registration allow_sign_up = false …

Look for *enabled* under *[auth.anonymous]*, remove *;* then fill in the value to *false*.

[INPUT]

1 2 3 4 5 … [auth.anonymous] # enable anonymous access enabled = false …

Restart grafana-server.

[INPUT]

1 2 systemctl restart grafana-server systemctl status grafana-server

*2.Update User and Password*

Browse for *http://SERVER-IP: 3000*, login with user = admin and password = admin. After logging in successfully, you will be asked to change the admin password.

Change password

*3.Add Data Source*

Previously on this server Prometheus was installed. Data from Prometheus will be visualized or displayed on Grafana.

1. Click *Add data source*. 2. Click *Select* on *Prometheus*. 3. URL = *http://SERVER-IP:9090*, (Prometheus server) 4. Click *Save & Test*. 5. If successful message appears *Data source is working*.

Grafana Home

Add data source

*4.Create Dashboard*

Next create a Dashboard while creating a panel for the server status whether *Up* or *Down*.

1. Click menu *+ Create -> Dashboard*. 2. Click *Choose Visualization*. 3. Click *Singlestat* 4. At *Value Mappings*, add *Set value mappings*, *1 -> UP* dan *0 -> DOWN*. 5. Click *Queries*, at *Query* choose data source Prometheus. 6. At *Metrics* enter *up{instance=”NODE-EXPORTER-IP:9100″,job=”node_exporter”}*. 7. Click *General*, at *Title* enter title panel *Status*. 8. Click *Save* 9. Enter *Dashboard name*, *Save*.

New Dashboard – New Panel

Panel editor – Query

Dashboard

*5.Add Panel*

Add a new panel to monitor other resources, for example to monitor CPU usage.

1. Click *Add Panel*. 2. Click *Choose Visualization*. 3. Click *Graph*. 4. At *Axes*, *Unit percent (0-100)*. 5. At *Legend*, *As Table = on*, *Current = on*. 6. Click *Queries*, *Queury* choose data source Prometheus. 7. At *Metrics*, masukkan *100 – (avg by (instance) (irate(node_cpu_seconds_total{instance=”NODE-EXPORTER-IP:9100″,job=”node_exporter”,mode=”idle”}[5m])) * 100)*. 8. Click *General*, *Title* enter *CPU Used*. 9. Click *Save*. 10. *ESC*.

Status Panel – CPU Used Panel

Add panels according to the needs of the monitoring system. Noteworthy is the selection of visualizations, metrics, and units.

Good luck 🙂

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