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* Adding check-legacy-links-format workflow * Adding test-link-rewrites workflow * Updating docs-content-check-legacy-links-format hash * Migrating links to new format Co-authored-by: Kendall Strautman <kendallstrautman@gmail.com>
86 lines
3.5 KiB
Plaintext
86 lines
3.5 KiB
Plaintext
---
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layout: docs
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page_title: Manual Lambda Function Registration
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description: >-
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Register AWS Lambda functions with Consul service mesh using the Consul Lambda registrator. The Consul Lambda registrator automates Lambda function registration.
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---
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# Manual Lambda Function Registration
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This topic describes how to manually register Lambda functions into Consul. Refer to [Automate Lambda Function Registration](/consul/docs/lambda/registration/automate) for information about using the Lambda registrator to automate registration.
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## Requirements
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Verify that your environment meets the requirements specified in [Lambda Function Registration Requirements](/consul/docs/lambda/registration).
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To manually register Lambda functions so that mesh services can invoke them, you must create and apply a service registration configuration for the Lambda function and write a [service defaults configuration entry](/consul/docs/connect/config-entries/service-defaults) for the function.
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## Register a Lambda function
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You can manually register Lambda functions if you are unable to automate the process using the Lambda registrator.
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1. Create a configuration for registering the service. You can copy the following example and replace `<SERVICE_NAME>` with your Consul service name for the Lambda function:
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<CodeBlockConfig filename="lambda.json">
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```json
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{
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"Node": "lambdas",
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"SkipNodeUpdate": true,
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"NodeMeta": {
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"external-node": "true",
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"external-probe": "true"
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},
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"Service": {
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"Service": "<SERVICE_NAME>"
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}
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}
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```
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</CodeBlockConfig>
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1. Save the configuration to `lambda.json`.
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1. Send the configuration to the `catalog/register` API endpoint to register the service, for example:
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```shell-session
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$ curl --request PUT --data @lambda.json localhost:8500/v1/catalog/register
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```
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1. Create the `service-defaults` configuration entry and include the AWS tags used to invoke the Lambda function in the `EnvoyExtensions` configuration. Refer to [Supported `EnvoyExtension` arguments](#supported-envoyextension-arguments) for more information.
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The following example creates a `service-defaults` configuration entry named `lambda`:
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<CodeBlockConfig filename="lambda-service-defaults.hcl">
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```hcl
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Kind = "service-defaults"
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Name = "<SERVICE_NAME>"
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Protocol = "http"
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EnvoyExtensions = [
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{
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"Name": "builtin/aws/lambda",
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"Arguments": {
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"Region": "us-east-2",
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"ARN": "<INSERT ARN HERE>",
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"PayloadPassthrough": true
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}
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}
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]
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```
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</CodeBlockConfig>
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1. Issue the `consul config write` command to store the configuration entry. For example:
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```shell-session
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$ consul config write lambda-service-defaults.hcl
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```
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### Supported `EnvoyExtension` arguments
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The `lambda` Envoy extension supports the following arguments:
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- `ARN` (`string`) - Specifies the [AWS ARN](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) for the service's Lambda. `ARN` must be set to a valid Lambda function ARN.
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- `Region` (`string`) - Specifies the AWS region the Lambda is running in. `Region` must be set to a valid AWS region where the Lambda function exists.
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- `PayloadPassthrough` (`boolean: false`) - Determines if the body Envoy receives is converted to JSON or directly passed to Lambda.
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- `InvocationMode` (`string: synchronous`) - Determines if Consul configures the Lambda to be invoked using the `synchronous` or `asynchronous` [invocation mode](https://docs.aws.amazon.com/lambda/latest/operatorguide/invocation-modes.html).
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