# How to start parsing AWS load balancer logs from specified date **URL:** \ **Category:** Logstash\ **Created:** [October 16, 2018, 7:25pm UTC](https://discuss.elastic.co/t/how-to-start-parsing-aws-load-balancer-logs-from-specified-date/152711 "2018-10-16T19:25:18Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![nitish](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@nitish](https://discuss.elastic.co/u/nitish)\ **Post date:** [October 16, 2018, 7:25pm UTC](https://discuss.elastic.co/t/how-to-start-parsing-aws-load-balancer-logs-from-specified-date/152711/1 "2018-10-16T19:25:18Z")
AWS LB logs are stored in S3 bucket at **AWSLogs/xxxxxxxxx/elasticloadbalancing/region/2018/10/16/\**. I want to skip old logs and start parsing from start of this month. Setting prefix **AWSLogs/xxxxxxxxx/elasticloadbalancing/region/2018/10** will temporarily solve my problem but prefix will change at the start of next month. I am using **exclude\_pattern =\> "/\*dev-test\*"** to skip dev and test logs. ELK version: 6.4.0 ---
**Author:** ![nitish](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@nitish](https://discuss.elastic.co/u/nitish)\ **Post date:** [October 19, 2018, 10:53am UTC](https://discuss.elastic.co/t/how-to-start-parsing-aws-load-balancer-logs-from-specified-date/152711/2 "2018-10-19T10:53:51Z")
I have written a shell script to update the prefix to current date and set a cron job to execute it every day after midnight and restart logstash. Please let me know if there is any better solution. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 16, 2018, 10:53am UTC](https://discuss.elastic.co/t/how-to-start-parsing-aws-load-balancer-logs-from-specified-date/152711/3 "2018-11-16T10:53:53Z")
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