DevOps Asked by joshk132 on August 22, 2021
I am trying to use the loggly Lambda blueprint to send cloudwatch logs to loggly. I am doing this because I have a bunch of lambdas that I need to have a single point of viewing logs. I’ve followed this guide and have run into an issue when I check the lambda logs after a test
Command used to do ciphertext
aws kms encrypt --key-id alias/logglyCustomerToken --plaintext "<my token>"
KMS key was created using symetric and default settings, can’t delete key to try again or at least I don’t know how to delete it and thinking I shouldn’t change the code to match a new one
Lambda log message when failed test
INFO InvalidCiphertextException: null
at Request.extractError (/var/runtime/node_modules/aws-sdk/lib/protocol/json.js:51:27)
at Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
at Request.emit (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
at Request.emit (/var/runtime/node_modules/aws-sdk/lib/request.js:683:14)
at Request.transition (/var/runtime/node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (/var/runtime/node_modules/aws-sdk/lib/state_machine.js:14:12)
at /var/runtime/node_modules/aws-sdk/lib/state_machine.js:26:10
at Request.<anonymous> (/var/runtime/node_modules/aws-sdk/lib/request.js:38:9)
at Request.<anonymous> (/var/runtime/node_modules/aws-sdk/lib/request.js:685:12)
at Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
code: 'InvalidCiphertextException',
time: 2020-07-08T02:48:55.536Z,
requestId: 'cf0df165-5a59-4db0-beef-5d1ae3619c37',
statusCode: 400,
retryable: false,
retryDelay: 79.27899980360486
}
Follow these steps to fix InvalidCiphertextException
:
Open the Lambda function in AWS console.
Scroll down to the Environment Variables
section & click Edit
:
Delete the value of kmsEncryptedCustomerToken
& replace it with the customer token you got from https://<your-company>.loggly.com/tokens
. The token looks like this: 72cf6d64-256e-449d-aabd-49e1f422ed58
.
Expand the Encryption Configuration
section at the bottom.
Select Enable helpers for encryption in transit
.
Click the Encrypt
button that appears next to kmsEncryptedCustomerToken
.
Select the logglyCustomerToken
KMS key (CMK) & Encrypt
.
Finally, Save
the environment variables.
The Lambda function test should succeed now. If you face any other issues or need a complete end-to-end screenshot-guided tutorial for the entire process of sending CloudWatch Logs to Loggly, please see my blog post.
Correct answer by Harish KM on August 22, 2021
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