Kibana setup and connection in Elasticsearch - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Kibana's Role

What is the primary purpose of Kibana in the Elastic Stack?

A To store and index data for fast search and analytics

B To visualize and explore data stored in Elasticsearch

C To ingest and transform data before indexing

D To secure Elasticsearch clusters with authentication

💡 Hint

Think about which tool helps you see and interact with your data.

Kibana is the visualization layer of the Elastic Stack. It connects to Elasticsearch and lets users create charts, dashboards, and explore data visually.

❓ Predict Output

intermediate

Kibana Connection URL Format

Given the following Kibana configuration snippet, what is the URL Kibana will use to connect to Elasticsearch?

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

A http://localhost:5601

B http://localhost:9300

C http://localhost:9200

D https://localhost:9200

💡 Hint

Look at the port number and protocol in the configuration.

The configuration shows Kibana connecting to Elasticsearch at http://localhost:9200, which is the default Elasticsearch HTTP port.

🔧 Debug

advanced

Troubleshooting Kibana Connection Error

You see this error in Kibana logs: Unable to connect to Elasticsearch at http://localhost:9200. Which of the following is the most likely cause?

A Elasticsearch index patterns are not created in Kibana

B Kibana is running on the wrong port 5602 instead of 5601

C Kibana configuration file is missing the <code>server.host</code> setting

D Elasticsearch is not running or not reachable at the specified URL

💡 Hint

Think about what would cause a connection failure to Elasticsearch.

If Kibana cannot connect to Elasticsearch, it usually means Elasticsearch is down, unreachable, or the URL is incorrect. Other options do not directly cause connection failures.

📝 Syntax

advanced

Correct Kibana Configuration for Elasticsearch Connection

Which of the following Kibana configuration lines correctly sets the Elasticsearch hosts to connect to a cluster running on https://es.example.com:9200?

A elasticsearch.hosts: ["https://es.example.com:9200"]

B elasticsearch.hosts = https://es.example.com:9200

C elasticsearch.hosts: "https://es.example.com:9200"

D elasticsearch.hosts: https://es.example.com:9200

💡 Hint

Remember the YAML syntax for lists and strings.

The correct syntax uses a YAML list with square brackets and quotes around the URL. Options B, C, and D are invalid YAML or missing list brackets.

🚀 Application

expert

Kibana Dashboard Access Control Setup

You want to restrict access to certain Kibana dashboards based on user roles. Which Elastic Stack feature should you configure to achieve this?

A Kibana Spaces with Role-Based Access Control (RBAC)

B Elasticsearch Index Lifecycle Management (ILM)

C Elasticsearch Snapshot and Restore

D Kibana Canvas Workpads

💡 Hint

Think about how Kibana organizes dashboards and controls user permissions.

Kibana Spaces allow grouping dashboards and visualizations, and combined with RBAC, you can restrict user access to specific spaces and dashboards.

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