Exemples d’utilisation de l’AWS CLI avec CloudFront et le script Bash

Les exemples de code suivants montrent comment réaliser des actions et mettre en œuvre des scénarios courants en utilisant l’AWS Command Line Interface avec le script Bash et CloudFront.

Les Scénarios sont des exemples de code qui vous montrent comment accomplir des tâches spécifiques en appelant plusieurs fonctions au sein d’un même service ou combinés à d’autres Services AWS.

Chaque exemple inclut un lien vers le code source complet, où vous trouverez des instructions sur la configuration et l’exécution du code en contexte.

Rubriques

Scénarios

Scénarios

L’exemple de code suivant illustre comment :

créer un compartiment Amazon S3 pour le stockage de contenu ;
charger un exemple de contenu dans le compartiment S3 ;
créer un contrôle d’accès d’origine (OAC) pour un accès à S3 sécurisé ;
créer une distribution CloudFront avec S3 comme origine ;
mettre à jour une stratégie de compartiment S3 pour autoriser l’accès à CloudFront ;
attendre le déploiement de la distribution et tester l’accès au contenu ;
nettoyer les ressources, y compris la distribution, l’OAC et le compartiment S3.

AWS CLI avec le script Bash

Note

Il y en a plus sur GitHub. Trouvez l’exemple complet et découvrez comment le configurer et l’exécuter dans le référentiel Sample developer tutorials.


#!/bin/bash

# CloudFront Getting Started Tutorial Script
# This script creates an S3 bucket, uploads sample content, creates a CloudFront distribution with OAC,
# and demonstrates how to access content through CloudFront.

# Set up logging
LOG_FILE="cloudfront-tutorial.log"
exec > >(tee -a "$LOG_FILE") 2>&1

echo "Starting CloudFront Getting Started Tutorial at $(date)"

# Function to handle errors
handle_error() {
    echo "ERROR: $1"
    echo "Resources created before error:"
    if [ -n "$BUCKET_NAME" ]; then
        echo "- S3 Bucket: $BUCKET_NAME"
    fi
    if [ -n "$OAC_ID" ]; then
        echo "- CloudFront Origin Access Control: $OAC_ID"
    fi
    if [ -n "$DISTRIBUTION_ID" ]; then
        echo "- CloudFront Distribution: $DISTRIBUTION_ID"
    fi
    
    echo "Attempting to clean up resources..."
    cleanup
    exit 1
}

# Function to clean up resources
cleanup() {
    echo "Cleaning up resources..."
    
    if [ -n "$DISTRIBUTION_ID" ]; then
        echo "Disabling CloudFront distribution $DISTRIBUTION_ID..."
        
        # Get the current configuration and ETag
        ETAG=$(aws cloudfront get-distribution-config --id "$DISTRIBUTION_ID" --query 'ETag' --output text)
        if [ $? -ne 0 ]; then
            echo "Failed to get distribution config. Continuing with cleanup..."
        else
            # Create a modified configuration with Enabled=false
            aws cloudfront get-distribution-config --id "$DISTRIBUTION_ID" | \
            jq '.DistributionConfig.Enabled = false' > temp_disabled_config.json
            
            # Update the distribution to disable it
            aws cloudfront update-distribution \
                --id "$DISTRIBUTION_ID" \
                --distribution-config file://<(jq '.DistributionConfig' temp_disabled_config.json) \
                --if-match "$ETAG"
                
            if [ $? -ne 0 ]; then
                echo "Failed to disable distribution. Continuing with cleanup..."
            else
                echo "Waiting for distribution to be disabled (this may take several minutes)..."
                aws cloudfront wait distribution-deployed --id "$DISTRIBUTION_ID"
                
                # Delete the distribution
                ETAG=$(aws cloudfront get-distribution-config --id "$DISTRIBUTION_ID" --query 'ETag' --output text)
                aws cloudfront delete-distribution --id "$DISTRIBUTION_ID" --if-match "$ETAG"
                if [ $? -ne 0 ]; then
                    echo "Failed to delete distribution. You may need to delete it manually."
                else
                    echo "CloudFront distribution deleted."
                fi
            fi
        fi
    fi
    
    if [ -n "$OAC_ID" ]; then
        echo "Deleting Origin Access Control $OAC_ID..."
        OAC_ETAG=$(aws cloudfront get-origin-access-control --id "$OAC_ID" --query 'ETag' --output text 2>/dev/null)
        if [ $? -ne 0 ]; then
            echo "Failed to get Origin Access Control ETag. You may need to delete it manually."
        else
            aws cloudfront delete-origin-access-control --id "$OAC_ID" --if-match "$OAC_ETAG"
            if [ $? -ne 0 ]; then
                echo "Failed to delete Origin Access Control. You may need to delete it manually."
            else
                echo "Origin Access Control deleted."
            fi
        fi
    fi
    
    if [ -n "$BUCKET_NAME" ]; then
        echo "Deleting S3 bucket $BUCKET_NAME and its contents..."
        aws s3 rm "s3://$BUCKET_NAME" --recursive
        if [ $? -ne 0 ]; then
            echo "Failed to remove bucket contents. Continuing with bucket deletion..."
        fi
        
        aws s3 rb "s3://$BUCKET_NAME"
        if [ $? -ne 0 ]; then
            echo "Failed to delete bucket. You may need to delete it manually."
        else
            echo "S3 bucket deleted."
        fi
    fi
    
    # Clean up temporary files
    rm -f temp_disabled_config.json
    rm -rf temp_content
}

# Generate a random identifier for the bucket name
RANDOM_ID=$(openssl rand -hex 6)
BUCKET_NAME="cloudfront-${RANDOM_ID}"
echo "Using bucket name: $BUCKET_NAME"

# Create a temporary directory for content
TEMP_DIR="temp_content"
mkdir -p "$TEMP_DIR/css"
if [ $? -ne 0 ]; then
    handle_error "Failed to create temporary directory"
fi

# Step 1: Create an S3 bucket
echo "Creating S3 bucket: $BUCKET_NAME"
aws s3 mb "s3://$BUCKET_NAME"
if [ $? -ne 0 ]; then
    handle_error "Failed to create S3 bucket"
fi

# Step 2: Create sample content
echo "Creating sample content..."
cat > "$TEMP_DIR/index.html" << 'EOF'
<!DOCTYPE html>
<html>
<head>
    <title>Hello World</title>
    <link rel="stylesheet" type="text/css" href="css/styles.css">
</head>
<body>
    <h1>Hello world!</h1>
</body>
</html>
EOF

cat > "$TEMP_DIR/css/styles.css" << 'EOF'
body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f5f5f5;
}
h1 {
    color: #333;
    text-align: center;
}
EOF

# Step 3: Upload content to the S3 bucket
echo "Uploading content to S3 bucket..."
aws s3 cp "$TEMP_DIR/" "s3://$BUCKET_NAME/" --recursive
if [ $? -ne 0 ]; then
    handle_error "Failed to upload content to S3 bucket"
fi

# Step 4: Create Origin Access Control
echo "Creating Origin Access Control..."
OAC_RESPONSE=$(aws cloudfront create-origin-access-control \
    --origin-access-control-config Name="oac-for-$BUCKET_NAME",SigningProtocol=sigv4,SigningBehavior=always,OriginAccessControlOriginType=s3)

if [ $? -ne 0 ]; then
    handle_error "Failed to create Origin Access Control"
fi

OAC_ID=$(echo "$OAC_RESPONSE" | jq -r '.OriginAccessControl.Id')
echo "Created Origin Access Control with ID: $OAC_ID"

# Step 5: Create CloudFront distribution
echo "Creating CloudFront distribution..."

# Get AWS account ID for bucket policy
ACCOUNT_ID=$(aws sts get-caller-identity --query 'Account' --output text)
if [ $? -ne 0 ]; then
    handle_error "Failed to get AWS account ID"
fi

# Create distribution configuration
cat > distribution-config.json << EOF
{
    "CallerReference": "cli-tutorial-$(date +%s)",
    "Origins": {
        "Quantity": 1,
        "Items": [
            {
                "Id": "S3-$BUCKET_NAME",
                "DomainName": "$BUCKET_NAME.s3.amazonaws.com",
                "S3OriginConfig": {
                    "OriginAccessIdentity": ""
                },
                "OriginAccessControlId": "$OAC_ID"
            }
        ]
    },
    "DefaultCacheBehavior": {
        "TargetOriginId": "S3-$BUCKET_NAME",
        "ViewerProtocolPolicy": "redirect-to-https",
        "AllowedMethods": {
            "Quantity": 2,
            "Items": ["GET", "HEAD"],
            "CachedMethods": {
                "Quantity": 2,
                "Items": ["GET", "HEAD"]
            }
        },
        "DefaultTTL": 86400,
        "MinTTL": 0,
        "MaxTTL": 31536000,
        "Compress": true,
        "ForwardedValues": {
            "QueryString": false,
            "Cookies": {
                "Forward": "none"
            }
        }
    },
    "Comment": "CloudFront distribution for tutorial",
    "Enabled": true,
    "WebACLId": ""
}
EOF

DIST_RESPONSE=$(aws cloudfront create-distribution --distribution-config file://distribution-config.json)
if [ $? -ne 0 ]; then
    handle_error "Failed to create CloudFront distribution"
fi

DISTRIBUTION_ID=$(echo "$DIST_RESPONSE" | jq -r '.Distribution.Id')
DOMAIN_NAME=$(echo "$DIST_RESPONSE" | jq -r '.Distribution.DomainName')

echo "Created CloudFront distribution with ID: $DISTRIBUTION_ID"
echo "CloudFront domain name: $DOMAIN_NAME"

# Step 6: Update S3 bucket policy
echo "Updating S3 bucket policy..."
cat > bucket-policy.json << EOF
{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Sid": "AllowCloudFrontServicePrincipal",
            "Effect": "Allow",
            "Principal": {
                "Service": "cloudfront.amazonaws.com"
            },
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::$BUCKET_NAME/*",
            "Condition": {
                "StringEquals": {
                    "AWS:SourceArn": "arn:aws:cloudfront::$ACCOUNT_ID:distribution/$DISTRIBUTION_ID"
                }
            }
        }
    ]
}
EOF

aws s3api put-bucket-policy --bucket "$BUCKET_NAME" --policy file://bucket-policy.json
if [ $? -ne 0 ]; then
    handle_error "Failed to update S3 bucket policy"
fi

# Step 7: Wait for distribution to deploy
echo "Waiting for CloudFront distribution to deploy (this may take 5-10 minutes)..."
aws cloudfront wait distribution-deployed --id "$DISTRIBUTION_ID"
if [ $? -ne 0 ]; then
    echo "Warning: Distribution deployment wait timed out. The distribution may still be deploying."
else
    echo "CloudFront distribution is now deployed."
fi

# Step 8: Display access information
echo ""
echo "===== CloudFront Distribution Setup Complete ====="
echo "You can access your content at: https://$DOMAIN_NAME/index.html"
echo ""
echo "Resources created:"
echo "- S3 Bucket: $BUCKET_NAME"
echo "- CloudFront Origin Access Control: $OAC_ID"
echo "- CloudFront Distribution: $DISTRIBUTION_ID"
echo ""

# Ask user if they want to clean up resources
read -p "Do you want to clean up all resources created by this script? (y/n): " CLEANUP_RESPONSE
if [[ "$CLEANUP_RESPONSE" =~ ^[Yy] ]]; then
    cleanup
    echo "All resources have been cleaned up."
else
    echo "Resources will not be cleaned up. You can manually delete them later."
    echo "To access your content, visit: https://$DOMAIN_NAME/index.html"
fi

echo "Tutorial completed at $(date)"

Pour plus de détails sur l’API, consultez les rubriques suivantes dans la Référence des commandes de l’AWS CLI.

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