how to create a node with a username and password?

Hello,

Please try this solution.

Step 1: Add SSH Credentials in Jenkins

Go to Credentials Management:

1. Navigate to Manage Jenkins > Manage Credentials.

Add New Credentials:

1. Select the domain where you want to add the credentials (typically (global)).
2. Click on Add Credentials.

Fill in the Credential Details:

1. Kind: Select Username with password.
2. Username: Enter the SSH username for the agent node.
3. Password: Enter the corresponding password.
4. ID: Leave this blank to let Jenkins generate an ID.
5. Description: Add a description to identify the credentials.
6. Click OK.

Step 2: Configure the Jenkins Node

Add a New Node:

1. Go to Manage Jenkins > Manage Nodes and Clouds > New Node.

Configure Node Settings:

1. Name: Enter a name for your node, e.g., MyAgentNode.
2. Select Permanent Agent and click OK.

Node Details:

1. Remote root directory: Enter the path where Jenkins will store files on the agent, e.g., /home/jenkins.
2. Number of Executors: Enter the number of executors (typically 1).
3. Labels: Add any labels you need to categorize the node.
4. Usage: Select Use this node as much as possible or other appropriate option.

Launch Method:

1. Launch method: Select Launch agents via SSH.
2. Host: Enter the IP address or hostname of the agent node.
3. Credentials: Select the SSH credentials you added earlier.
4. Host Key Verification Strategy: Select Manually trusted key verification Strategy.

Save:

1. Click Save.

Step 3: Verify and Troubleshoot

Check SSH Access:

1. Manually test SSH access from the Jenkins server to the agent node using the provided credentials.

ssh username@172.31.35.194

https://www.jenkins.io/doc/book/using/using-credentials/

https://devopscube.com/setup-slaves-on-jenkins-2/#:~:text=Setting%20up%20Jenkins%20Agents%2FSlaves%20using%20username%20and%20password,shown%20in%20the%20image%20below%20and%20save%20them.