allow access if the source IP address is an Elastic IP address assigned to the NAT gateway * for instances in VPC1.In this case, we will use the following policy to restrict access. The key point is the conditions under which access is allowed. Restrict access to the buckets you have created using bucket policies. Therefore, although the index file is not actually set up, it is set as a formality. This is because the hosting function cannot be activated without setting this property. The point to note is the IndexDocument property. By enabling this function, HTTP communication from yum clients can be accepted. The WebsiteConfiguration property sets the static website hosting functionality.
Resources: Bucket: Type: AWS::S3::Bucket Properties: BucketName: !Ref Prefix AccessControl: Private WebsiteConfiguration: IndexDocument: index.html Code language: YAML ( yaml ) The key point is the settings related to static website hosting. Explanation of key points in the template files Enable static website hosting functionality and make S3 bucket yum repository The CloudFormation template is located at the following URL. The above configuration is built with CloudFormation. No Internet Gateway or NAT gateway will be placed in this VPC, and the S3 bucket will be accessed via the VPC endpoint for S3.
On the other VPC, we will deploy a verification instance for our home-grown repository. Deploy the latest Amazon Linux 2 instance, create a repository for the clients, and upload it to the S3 bucket. So this time, we will build our own yum repository on S3.Ĭlient packages for the two database engines (Oracle and Microsoft SQL Server) are stored in that repository and installed on instances in the private subnet. However, not all packages can be installed from the Amazon Linux repositories.įor example, to connect to Oracle or Microsoft SQL Server versions of RDS, a dedicated client is required, but these cannot be installed on EC2 without installing a NAT gateway or similar. How can I update yum or install packages without internet access on my EC2 instances running Amazon Linux 1 or Amazon Linux 2? To update and install packages on your instance without an internet connection, create an S3 Amazon Virtual Private Cloud (Amazon VPC) gateway endpoint. Accessing original yum repository on S3 from Amazon Linux 2 in a private subnetįor Amazon Linux (2), yum can be run from a private subnet by referencing an Amazon Linux repositories built on an S3 bucket.Īmazon Linux repositories are hosted in Amazon Simple Storage Service (Amazon S3) buckets.
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