Elaborate connection check for JuiceFS to B2 Backblaze connectivity.

jfs_conntest.sh

#!/bin/bash

# BackBlaze B2 Connection Test Script
# Run this to verify your B2 credentials and connection work before JuiceFS setup

echo "Testing BackBlaze B2 Connection..."
echo "=================================="

# Check environment variables
if [ -z "$B2_APPLICATION_KEY_ID" ] || [ -z "$B2_APPLICATION_KEY" ] || [ -z "$B2_BUCKET_NAME" ] || [ -z "$B2_ENDPOINT" ]; then
    echo "❌ Missing environment variables. Please set:"
    echo "   export B2_APPLICATION_KEY_ID='your_key_id'"
    echo "   export B2_APPLICATION_KEY='your_application_key'"
    echo "   export B2_BUCKET_NAME='your-bucket-name'"
    echo "   export B2_ENDPOINT='https://s3.eu-central-003.backblazeb2.com'"
    exit 1
fi

echo "✅ Environment variables set:"
echo "   Bucket: $B2_BUCKET_NAME"
echo "   Endpoint: $B2_ENDPOINT"
echo "   Key ID: ${B2_APPLICATION_KEY_ID:0:10}..."
echo ""

# Set AWS environment for testing
export AWS_ACCESS_KEY_ID="$B2_APPLICATION_KEY_ID"
export AWS_SECRET_ACCESS_KEY="$B2_APPLICATION_KEY"
export AWS_ENDPOINT_URL="$B2_ENDPOINT"
export AWS_S3_FORCE_PATH_STYLE="true"

# Test with aws-cli if available
if command -v aws >/dev/null 2>&1; then
    echo "Testing with AWS CLI..."
    echo "Running: aws s3 ls s3://$B2_BUCKET_NAME/ --endpoint-url $B2_ENDPOINT"
    if aws s3 ls "s3://$B2_BUCKET_NAME/" --endpoint-url "$B2_ENDPOINT"; then
        echo "✅ AWS CLI connection successful!"
    else
        echo "❌ AWS CLI connection failed"
        echo ""
        echo "You can install aws-cli with: apt-get install awscli"
    fi
    echo ""
else
    echo "AWS CLI not found (optional for testing)"
    echo ""
fi

# Test with curl
echo "Testing direct HTTPS connection..."
CURL_URL="${B2_ENDPOINT}/${B2_BUCKET_NAME}/"
echo "Testing: curl -I $CURL_URL"

if curl -I "$CURL_URL" 2>/dev/null | head -1 | grep -q "200\|403\|404"; then
    echo "✅ HTTPS connection to endpoint successful!"
else
    echo "❌ Cannot reach endpoint via HTTPS"
    echo "Check your B2_ENDPOINT and network connectivity"
fi

echo ""
echo "Connection test complete."
echo ""
echo "If tests pass, try running the JuiceFS setup script again."