Kibana setup and connection in Elasticsearch

Introduction

Kibana helps you see and explore your data stored in Elasticsearch. It makes data easy to understand with pictures and charts.

You want to look at your website's visitor data in graphs.

You need to check logs from your app to find errors.

You want to create dashboards to monitor sales numbers.

You want to search and filter big sets of data quickly.

You want to share data views with your team visually.

Syntax

Elasticsearch

1. Install Kibana.
2. Configure kibana.yml to connect to your Elasticsearch server.
3. Start Kibana service.
4. Open Kibana in your web browser at http://localhost:5601
5. Add your Elasticsearch index pattern in Kibana to start exploring data.

Make sure Elasticsearch is running before starting Kibana.

The default Kibana port is 5601, but you can change it in the config file.

Examples

This tells Kibana where to find Elasticsearch and which port to use.

Elasticsearch

# Example kibana.yml snippet
server.port: 5601
elasticsearch.hosts: ["http://localhost:9200"]

Use this command to start Kibana after installation.

Elasticsearch

systemctl start kibana
# Starts the Kibana service on Linux systems

This is where you interact with Kibana visually.

Elasticsearch

http://localhost:5601
# Open this URL in your browser to access Kibana's web interface

Sample Program

This sequence shows how to check Elasticsearch, start Kibana, and open it to connect and explore your data.

Elasticsearch

# Step 1: Ensure Elasticsearch is running
curl -X GET "localhost:9200"

# Step 2: Start Kibana service
sudo systemctl start kibana

# Step 3: Open Kibana in browser
# Go to http://localhost:5601

# Step 4: Create index pattern in Kibana UI for your data

# Step 5: Explore your data with Kibana visualizations

Important Notes

If Kibana does not connect, check that Elasticsearch URL and port in kibana.yml are correct.

Use browser developer tools (F12) to troubleshoot Kibana loading issues.

Always secure your Elasticsearch and Kibana in production with passwords and HTTPS.

Summary

Kibana connects to Elasticsearch to help you see your data visually.

Set the connection in kibana.yml and start the Kibana service.

Open Kibana in a browser and create index patterns to explore data.

Practice

1. What is the main requirement before starting Kibana to ensure it works properly?

easy

A. The browser must be Internet Explorer

B. Kibana must be installed on a different server

C. Elasticsearch must be running

D. A database connection must be configured

Solution

1. Step 1: Understand Kibana's dependency

   Kibana is a visualization tool that requires Elasticsearch to provide data.

2. Step 2: Confirm service requirement

   Without Elasticsearch running, Kibana cannot fetch or display data.

3. Final Answer:

   Elasticsearch must be running -> Option C

4. Quick Check:

   Kibana needs Elasticsearch running [OK]

Hint: Remember: Kibana shows data from Elasticsearch only [OK]

Common Mistakes:

• Thinking Kibana works standalone without Elasticsearch
• Confusing Kibana with a database
• Assuming any browser works without checking compatibility

2. Which setting in kibana.yml specifies the Elasticsearch server address?

easy

A. elasticsearch.hosts

B. server.port

C. kibana.index

D. logging.dest

Solution

1. Step 1: Identify configuration purpose

   The kibana.yml file configures Kibana settings including connection details.

2. Step 2: Locate Elasticsearch host setting

   The setting elasticsearch.hosts defines the URL(s) of Elasticsearch nodes Kibana connects to.

3. Final Answer:

   elasticsearch.hosts -> Option A

4. Quick Check:

   Elasticsearch server address = elasticsearch.hosts [OK]

Hint: Look for 'elasticsearch.hosts' in kibana.yml [OK]

Common Mistakes:

• Confusing server.port with Elasticsearch address
• Using kibana.index which is for saved objects
• Mistaking logging.dest for connection settings

3. Given the following kibana.yml snippet:

elasticsearch.hosts: ["http://localhost:9200"]
server.port: 5601

What URL should you open in your browser to access Kibana?

medium

A. http://localhost:9200

B. http://localhost:9200/kibana

C. http://localhost:5601/elasticsearch

D. http://localhost:5601

Solution

1. Step 1: Identify Kibana server port

   The setting server.port: 5601 means Kibana listens on port 5601.

2. Step 2: Determine correct URL

   To access Kibana, open the browser at http://localhost:5601. Port 9200 is for Elasticsearch, not Kibana.

3. Final Answer:

   http://localhost:5601 -> Option D

4. Quick Check:

   Kibana URL uses server.port = 5601 [OK]

Hint: Kibana runs on server.port, default 5601 [OK]

Common Mistakes:

• Opening Elasticsearch port 9200 instead of Kibana port
• Appending /kibana or /elasticsearch incorrectly
• Confusing ports between services

4. You started Kibana but get a connection error. Which of these is the most likely cause?

medium

A. Elasticsearch service is not running

B. Kibana is running on port 9200

C. Browser cache is full

D. Kibana.yml file is missing

Solution

1. Step 1: Understand connection error cause

   Kibana depends on Elasticsearch; if Elasticsearch is down, Kibana cannot connect.

2. Step 2: Evaluate other options

   Kibana does not run on port 9200 (Elasticsearch default). Browser cache or missing config file usually cause different errors.

3. Final Answer:

   Elasticsearch service is not running -> Option A

4. Quick Check:

   Connection error = Elasticsearch down [OK]

Hint: Check Elasticsearch service status first [OK]

Common Mistakes:

• Assuming Kibana runs on Elasticsearch port
• Blaming browser cache for connection errors
• Ignoring Elasticsearch service status

5. You want to connect Kibana to a remote Elasticsearch server at http://192.168.1.100:9200. Which is the correct elasticsearch.hosts setting in kibana.yml?

hard

A. elasticsearch.hosts: ["http://localhost:9200"]

B. elasticsearch.hosts: ["http://192.168.1.100:9200"]

C. elasticsearch.hosts: "192.168.1.100:5601"

D. elasticsearch.hosts: ["https://192.168.1.100:5601"]

Solution

1. Step 1: Identify remote Elasticsearch URL

   The remote server address is http://192.168.1.100:9200, which is the default Elasticsearch port.

2. Step 2: Set elasticsearch.hosts correctly

   The setting must be a list with the full URL including protocol and port: ["http://192.168.1.100:9200"].

3. Step 3: Eliminate incorrect options

   elasticsearch.hosts: ["http://localhost:9200"] points to localhost, not remote. Options C and D use wrong ports or protocols for Elasticsearch.

4. Final Answer:

   elasticsearch.hosts: ["http://192.168.1.100:9200"] -> Option B

5. Quick Check:

   Remote Elasticsearch URL in elasticsearch.hosts list [OK]

Hint: Use full URL with http and port 9200 in elasticsearch.hosts [OK]

Common Mistakes:

• Using localhost instead of remote IP
• Omitting protocol (http://)
• Using wrong port like 5601 for Elasticsearch