We are excited to announce regular expression support for Amazon CloudWatch Logs filter pattern syntax, making it easier to search and match relevant logs in the AWS GovCloud (US) Regions. Customers use filter pattern syntax today to search logs, extract metrics using metric filters, and send specific logs to other destinations with subscription filters. With today’s launch, customers will be able to further customize these operations to meet their needs with flexible and powerful regular expressions within filter patterns. Now customers can define one filter to match multiple IP subnets or HTTP status codes using a regular expression such as ‘{ $.statusCode=%4[0-9]{2}% }’ rather than having to define multiple filters to cater to each variation, reducing the configuration and management overhead on their logs.
Source:: Amazon AWS