#CSI Workload Configuration Troubleshooting

This guide provides detailed steps for diagnosing and resolving common issues with the Connectors CSI Driver when mounting configurations in workloads.

#Common Issues Overview

#Checking CSI Volume Configuration

Verify the CSI volume configuration in your workload YAML:

volumes:
- name: gitconfig
  csi:
    readOnly: true
    driver: connectors-csi
    volumeAttributes:
      connector.name: "<connector-name>"
      configuration.names: "gitconfig"

• Set driver exactly to connectors-csi
• Ensure connector exists in the same namespace
• Set configuration.names to gitconfig for Git operations
• Make sure connector is in the same namespace as pod

How to verify:

# Check if the connector exists
kubectl get connector <connector-name> -n <namespace>

# Verify the connector is Ready
kubectl get connector <connector-name> -n <namespace> -o jsonpath='{.status.conditions[?(@.type=="Ready")].status}'

# Check CSI driver availability
kubectl get pods -n connectors-system -l app.kubernetes.io/name=connectors-csi

#Verifying Volume Mount

Check if the volume mount configuration is correct:

volumeMounts:
- name: gitconfig
  mountPath: "/path/to/user/home/"

Important considerations:

• The mount path must match the home directory of the user running Git commands
• For Git configuration, the file is always created at <mountPath>/.gitconfig

Finding the correct home directory:

# Check the user's home directory in the container
kubectl exec <pod-name> -n <namespace> -- env | grep HOME

# Common paths depending on container image:
# - For root user: /root/
# - For git user: /home/git/
# - For non-root users: /home/<username>/

Verifying mount success:

# Check if volumes are properly mounted
kubectl describe pod <pod-name> -n <namespace> | grep -A 5 "Mounts:"

# Look for mount events in the pod description
kubectl describe pod <pod-name> -n <namespace> | grep -A 10 "Events:"

#Examining Pod Events

Check Pod events for mount-related issues:

kubectl describe pod <pod-name> -n <namespace>

Common error messages and solutions:

Example error and resolution:

  Warning  FailedMount  3m (x5 over 5m)  kubelet  MountVolume.SetUp failed for volume "gitconfig" :
  rpc error: code = NotFound desc = connector "git-github" not found

Resolution: Create the connector or correct the connector name in the volume attributes.

#Finding the Generated Git Configuration

Locate the Git configuration file:

# Check if the expected path has the file
kubectl exec <pod-name> -n <namespace> -- ls -la /path/to/home/.gitconfig

If no configuration file is found, check:

1. Volume mount is successful
2. CSI driver is healthy
3. ServiceAccount has permissions
4. Connector is Ready

#Examining Git Configuration Content

Check the generated .gitconfig file content:

kubectl exec <pod-name> -n <namespace> -- cat /path/to/.gitconfig

Expected configuration elements:

1. HTTP header with authentication token:

   [http]
       extraHeader = Authorization: Basic <token>

2. URL rewriting rule:

   [url "http://c-<connector-name>.<connector-namespace>.svc"]
       insteadOf = <original-git-url>

#Advanced Troubleshooting

#CSI Driver Logs

Check CSI driver logs for detailed error information:

kubectl logs -n connectors-system -l app.kubernetes.io/name=connectors-csi -c csi-driver

#Testing with a Diagnostic Pod

Create a diagnostic pod to test CSI functionality:

apiVersion: v1
kind: Pod
metadata:
  name: csi-debug-pod
  namespace: <namespace>
spec:
  containers:
  - name: debug
    image: alpine
    command: ["sleep", "3600"]
    volumeMounts:
    - name: gitconfig
      mountPath: "/root/"
  volumes:
  - name: gitconfig
    csi:
      driver: connectors-csi
      readOnly: true
      volumeAttributes:
        connector.name: "<connector-name>"
        configuration.names: "gitconfig"

#Additional Resources

• Connectors CSI Driver Concepts
• Git Connector Quick Start
• Connector Status Troubleshooting
• Using Git Connector in Clone Tasks