Software⏱️ 2 min read📅 2026-05-31

How to Fix: Jenkins Host key verification failed

Learn how to fix: Jenkins Host key verification failed.

Quick Answer: Try checking your system settings or restarting.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🔧 Proven Troubleshooting Steps
  3. 🎯 Final Words

The 'Jenkins Host key verification failed' error occurs when Jenkins is unable to verify the host key of the repository. This issue can be resolved by updating the Jenkins configuration and adding the public key of the server to Jenkins.

🛑 Root Causes of the Error

  • Incorrect or missing public key in Jenkins configuration.

🔧 Proven Troubleshooting Steps

Method 1: Update Jenkins Configuration

  1. Step 1: Open the Jenkins configuration file located at /etc/jenkins/jenkins.xml.
  2. Step 2: Locate the < JenkinsUsername> element and add the public key of the server to the < JenkinsPassword> element.

Method 2: Add Public Key to Jenkins

  1. Step 1: Open a terminal and run the command jenkins-admin.sh --add-public-key -k (replace public_key with your actual public key).
  2. Step 2: Restart Jenkins by running the command service jenkins restart.

🎯 Final Words

By following these steps, you should be able to resolve the 'Jenkins Host key verification failed' error and connect to your Bitbucket repository successfully.

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