Troubleshooting Common Git Integration Issues

Authentication Problem

Error: Authentication Failed / Permission denied

Cause: Invalid credentials or missing access rights.

Fix:

• Update credentials in the startup configuration of your server.
• Verify your Git username, personal access token, or SSH key.
• Ensure the repository URL is correct (https:// for HTTPS).

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Repository Not Found

Error: fatal: repository not found

Cause: Incorrect repository URL or insufficient permissions.

Fix:

• Double-check the repository link (case-sensitive for GitHub).
• Ensure the repo is public or that your account/token has access.
• Test cloning the repo manually on the node to confirm connectivity.

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SSH Key Issues

Error: Permission denied (publickey)

Cause: Missing or misconfigured SSH keys.

Fix:

• Add your server’s public key to the Git provider
• Ensure the key is loaded (ssh-add -l to list keys).
• Verify file permissions (chmod 600 ~/.ssh/id_rsa).

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Network or DNS Problems

Error: Could not resolve host

Cause: The system cannot reach the Git server due to network or DNS issues.

Fix:

• Restart your machine or networking service to refresh connections.
• Check your internet connection and ensure it is stable.
• Verify DNS resolution by running ping github.com or nslookup github.com.
• If DNS fails, try switching to a different DNS provider (e.g., Google DNS 8.8.8.8 or Cloudflare 1.1.1.1).
• Confirm that firewalls or proxies are not blocking Git traffic.
• Restart your machine or networking service to refresh connections.

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File Permission Errors

Error: fatal: could not create work tree dir

Cause: The system does not have permission to write files in the target directory.

Fix:

• Ensure you have write access to the directory where you’re cloning or pulling.
• Run ls -ld <directory> to check ownership and permissions.
• Adjust permissions if needed:
  • chmod -R 755 <directory> (sets read/write/execute for owner).
  • chown -R <user>:<group> <directory> (changes ownership).
• Avoid running Git commands as root unless absolutely necessary.

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Disk Space Issues

Error: fatal: write error: No space left on device

Cause: The system has run out of disk space while cloning or pulling.

Fix:

• Check available space with df -h.
• Remove unnecessary files, logs, or temporary data.
• Clean up old Git objects with git gc.
• If possible, expand your disk allocation or move the repository to a larger drive.

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Branch or Tag Errors

Error: pathspec 'branch-name' did not match any file(s)

Cause: Attempting to checkout or pull a branch/tag that doesn’t exist.

Fix:

• List available branches with git branch -a.
• List tags with git tag -l.
• Double-check spelling and case sensitivity (Git is case-sensitive).
• Update your command to reference the correct branch or tag.

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