Send Amazon Cloudwatch Metrics Stats to Loggly
Metrics are stats relating to the performance of your systems. You can push your Amazon Cloudwatch metrics to Loggly using our AWS Lambda Script. Please note these instructions are for Cloudwatch Metrics Logs, which are different from Cloudwatch logs. Follow the instructions below.
1. Encrypt Loggly Customer Token
Create a KMS key using the steps mentioned in the link with alias name : logglyCustomerToken
Encrypt the Loggly Customer Token using the AWS CLI
aws kms encrypt --key-id alias/logglyCustomerToken --plaintext "TOKEN"
- TOKEN: your customer token from the source setup page
NOTE: Always use the latest version of AWS CLI to get all the updated features. Please make sure that the AWS CLI is configured and is using the correct AWS Access Key ID, AWS Secret Access Key and Default region name using ‘aws configure’ command.
pip install --upgrade awscli aws configure
2. Get the Lambda Code
Clone the git repo cloudwatch-metrics-to-loggly
git clone https://github.com/psquickitjayant/cloudwatch-metrics-to-loggly.git cd cloudwatch-metrics-to-loggly
Install required npm packages.
Edit index.js to set up encrypted customer token. Copy the base-64 encoded, encrypted token from step 1’s CLI output (CiphertextBlob attribute) and replace it with the “your KMS encrypted key” in the script.
Zip up your code:
zip -r Cloudwatch-metrics-to-loggly.zip index.js node_modules
The resulting zip (Cloudwatch-metrics-to-loggly.zip) is what you will upload to AWS in step 3 below.
3. Configure the Lambda Function
Sign in to your AWS account and open IAM console – https://console.aws.amazon.com/iam/
In your IAM console:
– Create a new Role say, ‘cloudwatch-full-access‘.
– Select Role type as ‘AWS Lambda‘ from the AWS Service Roles.
– Attach policy ‘CloudWatchFullAccess‘ and save.
Go to AWS Lambda Console. Click the “Create a Lambda function” button. (Choose “Upload a .ZIP file”). Fill the following details.
Type the name and description of your function Select Node.js in runtime. Upload lambda function (zip file you made above in Step 2) Handler*: index.handler Set Role : cloudwatch-full-access Set memory at 256MB Set Timer to 2 minutes.
Configure the Event Source to call Cloudwatch-metrics-to-loggly. Go to the AWS Lambda Console . Make sure the Cloudwatch-metrics-to-loggly lambda function is selected, then click ‘Actions->Add event source‘. Then fill the following details.
Event source type: CloudWatch Events – Schedule Name: Name for event. Like (custom-schedule-five-minute - rate(5 minutes)) Description: Description for events. Schedule expression: Select rate(5 minutes). Enable event source: select Enable Now. Click on submit button.
4. Verify Events
Search Loggly events with the tag CloudwatchMetrics over the past 20 minutes. It may take few minutes to index the events. If this doesn’t work, see the troubleshooting section below.
Advanced AWS CloudWatch Options
- Loggly Libraries Catalog – See more logging options here
- Amazon Cloudwatch Logs – Sending Cloudwatch Logs to Loggly
If you don’t see any data appear in the verification step, then check for these common problems.
- Make sure you’ve included your own customer token.
- You can use multiple ways to create roles in an AWS Service
- Make sure you have configured the same roles as mentioned above.
- Make sure you are using the latest version of AWS CLI.
- Check the Cloudwatch Logs for the log group of your script to see if it’s running and if there are any errors.
- Search or post your own Amazon CloudWatchMetrics logging questions in the community forum.