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|  How to fix authentication errors during SVN checkout for embedded projects?

How to fix authentication errors during SVN checkout for embedded projects?

October 14, 2024

A firmware developer's guide to resolving authentication errors in SVN checkout for embedded projects. Easy steps to get your Subversion tasks back on track.

How to fix authentication errors during SVN checkout for embedded projects?

 

Identify the Authentication Error

 

  • <li>Take note of the specific error message you receive when the authentication error occurs. Common errors include invalid credentials, expired authentication tokens, or Subversion client-related issues.</li>
  • <li>Check your network connection to ensure it's stable, as network issues can sometimes masquerade as authentication problems.</li>

 

Review servers and config Files

 

  • <li>Locate your SVN configurations, typically found in the .subversion directory within your home directory (e.g., ~/.subversion/servers for server settings).</li>
  • <li>Examine and correct any incorrect or outdated configurations related to your SVN server. Pay attention to the http-proxy-host, http-proxy-port, and other relevant settings.</li>
[groups]
examplegroup = *.example.com

[examplegroup]
http-proxy-host = your.proxy.host
http-proxy-port = 8080

 

Delete Stored Credentials

 

  • <li>Subversion often caches credentials. You may need to remove stored credentials to reset your authentication attempts.</li>
  • <li>Delete any files in the ~/.subversion/auth directory related to your SVN repository.</li>

 

Verify SVN Client Version Compatibility

 

  • <li>Ensure that your SVN client version aligns with the server version. Sometimes updates on the server-side require corresponding updates on the client side for compatibility with new authentication methods.</li>
  • <li>Consider upgrading your SVN client if it is outdated: <br>
    ```bash
    sudo apt-get update
    sudo apt-get install subversion
    ```</li>

 

Check SSL/TLS Certificates (if using HTTPS)

 

  • <li>If you're accessing the SVN server over HTTPS, make sure your machine trusts the server's SSL/TLS certificate.</li>
  • <li>Add the certificate to your trusted store, or use SVN's --trust-server-cert option if you trust the server's identity: <br>
    ```bash
    svn checkout --trust-server-cert https://example.com/repo
    ```</li>

 

Utilize Command-Line Options for Debugging

 

  • <li>Utilize verbose output for additional clues on errors: <br>
    ```bash
    svn checkout --username yourUsername --password yourPassword --no-auth-cache --non-interactive https://example.com/repo
    ```</li>
  • <li>Check logs or console outputs for messages that might help pinpoint the issue.</li>

 

Check and Reset SSH Keys (for svn+ssh)

 

  • <li>If using svn+ssh, ensure your SSH keys are up-to-date and correctly configured on the server and your client machine. <br>
    Replace the SSH key or manually specify the SSH command: <br>
    ```bash
    svn checkout svn+ssh://username@server/path/to/repo --config-option config:tunnels:ssh="ssh -i /path/to/private/key"
    ```</li>

 

Network and Firewall Settings

 

  • <li>Ensure no network policies or firewall settings are impeding your connection to the SVN server.</li>
  • <li>Consult with your network administrator if you suspect network-related issues may be interfering with SVN authentication.</li>

 

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