rubyloggingamazon-cloudwatchcloudwatch

CloudWatch filter pattern for ruby logger

With AWS CloudWatch Logs, i'd like apply a filter, separating the fields in a message generated by a ruby logger.

I, [26/Oct/2015:04:35:12 +0000#11]  INFO -- : (0.000934s) BEGIN

This is how the format is specified according to the Ruby docs:

SeverityID, [DateTime #pid] SeverityLabel -- ProgName: message

How do i extract the labels using a CloudWatch filter? Namely, how can i extract values between certain characters like the pID and parts of the actual message?

Solution

  • the short answer is that you cannot do that.

    If logging in json format is an option you could potentially do something around extracting fields/values.

    Docs are here: http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/FilterAndPatternSyntax.html