![]() ![]() To totally avoid using NAT Gateways, you can use publicly accessible RDS databases (Vapor automatically assigns a long, random password) and a DynamoDB cache table, which Vapor automatically creates for each of your projects. Unfortunately, AWS bills for NAT Gateways by the hour, resulting in a monthly fee of about $32 / month. If it doesn't, Vapor will automatically begin provisioning one. ![]() # Managing NAT GatewaysĪnytime you deploy an application that lists a private database or cache cluster as an attached resource within its vapor.yml file, Vapor will automatically ensure that the network associated with that database / cache contains a NAT Gateway. By default, this network has no access to the outside Internet, meaning any outgoing API calls from your application will fail. In summary, when a serverless application needs to interact with one of these resources, AWS requires us to place that application within that region's network. It sounds complicated, but don't worry, Vapor takes care of the heavy lifting. If your application interacts with a private database or a cache cluster, your network will require a NAT Gateway. You may create a jumpbox via the Vapor UI's network detail screen or using the jump CLI command:įor practical examples of using jumpboxes to make your serverless life easier, check out the database and cache documentation. Jumpboxes are very small, SSH accessible servers that are placed within your private network. To mitigate this inconvenience, Vapor allows you to create jumpboxes. ![]() This can make it cumbersome to inspect and manipulate these resources during development. Instead, they can only be accessed by a machine within their network. Some Vapor resources, such as private databases or cache clusters, may not be accessed from the public Internet. IP ranges provided for public and private subnets must fall in the range provided for the overall VPC without overlapping each other. The total number of ranges required for private subnets varies between two and four depending on the number of availability zones for the selected region. You must enter an IP range in valid CIDR notation for the overall VPC, along with the public and private subnets. When creating the network within the Vapor UI, select "Configure Custom IP Range" to show the Custom IP Range interface. However, if you need more control over how your network is configured - such as when you plan to configure your Vapor environment to communicate with pre-existing resources on AWS - you may set your own custom IP range. To place an environment within a network, add the network directive to your vapor.yml configuration file:Įnvironments : production : network : my -networkīuild : - 'composer install -no-dev' # Custom IP Rangeīy default, Vapor provisions new networks with an IP address range which is more than sufficient for most projects. ![]() This may be the case when you are accessing private AWS resources, such as ElasticSearch, that are not created through Vapor. Typically, you do not need to manually add a network directive to your vapor.yml file however, sometimes you may want to manually specify that a Vapor environment should be placed within a given network. When you create a project in a region that does not contain any previous Vapor projects, Vapor automatically begins provisioning a network for you. In general, although they are displayed in the Vapor UI for you to review, you are not required to interact with networks directly when using Vapor. Networks house your databases, caches, jumpboxes, and occasionally applications within AWS. Sandbox URL Returns 400 "message: null".502 Bad Gateway Or "Internal Server Error". ![]()
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