How To Monitoring The Linux Servers Using Node exporter, Prometheus & Grafana

 

Prerequisites:

• For this Demonstration Purpose i Need 3-linux Servers 1-server for Monitering remaing are to install Prometheus & Grafana Software’s in those servers.
• For installing Prometheus Software Refer This doc: https://prometheus.io/download/
• For installing Grafana Software Refer this Doc: https://grafana.com/docs/grafana/latest/setup-grafana/installation/rpm/
• For Demo Purpose I am using Cloud Technology as AWS using

Let’s Start The Process:

Installing node_exporter on linux monitering Server:

• Launch 3-Linux servers using AWS and open all traffic in Security Group for demo purpose only not recommended to open in real-time while working on projects.

Then login to Linux Server & move to /opt directory which you’re trying to moniter liken shown below. 

• Next install Node Exporter in the same server by referring the Prometheus official doc: https://prometheus.io/download/

sudo wget https://github.com/prometheus/node_exporter/releases/download/v1.4.0-

rc.0/node_exporter-1.4.0-rc.0.linux-amd64.tar.gz 

• Next open tar.gz file by using sudo tar xf like shown below
  
• Next move that long name file of node-exporter into shortcut name as a node_exporter
• 

  
  
• Next chnage Directory  & move to node_exporter directory by using cd node_exporter 

  
• Next run or execute that node_exporter on the same directory where you install Node exporter by
  sudo ./node_exporter
• 
  
  
  
  
• Copy public-i.p of Linux Monitor Server & Then move to browser click on search 

Prometheus Installation on another Linux Server:gThen login to Prometheus Server & move to cd /opt directory which you’re trying to

• moniter liken shown below. 

Next install Prometheus on Linux Server by referring doc: https://prometheus.io/download/

sudo wget https://github.com/prometheus/prometheus/releases/download/v2.37.0/prometheus-

2.37.0.linux-amd64.tar.gz

• Next open or extract tar.gz file by using sudo tar xf like shown below
• 
  Next After open that tar file remove that .gz file no longer need like this
• 
  Next rename to that Prometheus Software file its too long name 
  
  Next Move to Prometheus Directory cd Prometheus & then see the list of files and
  it will show the directories in the directory
• 
  Modify that Prometheus.yml file and add the host entries of Monitoring server like shown
  below

  

  

  Next Run that Prometheus.yml file to reflect the changes which we modified

  ./Prometheus.yml

  

  

  Copy public-I.P of the Prometheus Server & Then Move to browser and clcik on search 

  

  
  

  Grafana Installation on another Linux Server:

   Then login to Prometheus Server & move to cd /opt directory which you’re trying to

  moniter liken shown below. 

Next refer the Official Document of Grafana :

https://grafana.com/docs/grafana/latest/setup-grafana/installation/rpm/

In that edit the file sudo vi /etc/yum.repos.d/grafana.repo

After modify service file then install the grafana software by sudo yum install grafana 

Then start the service using sudo systemctl start grafana-server 

• Then Copy Public ip of Grafana server and access it from browser & login with default name as admin & password admin 

• Next Configure data source as a Prometheus
  

• Next Click on Import dashboard like shown 
  
  Then import and add dashboard from garafana labs avilabe predefine dashboard then finally
  monitor server 
• 

  
  
  
• Then finally you can moniter your Linux server using Prometheus & grafana help of node

  exporter
• 
   
  
• Note: Open all Traffic in Security Groups under Edit In-bound rules access from anywhere for all the 3 servers for demo purposes only 
• If you need Grafana Dash Board from online searching with key word grafana-labs 0r grafana dashboards
• I used here for demo purpose predefined Grafana Dash Board 1860