I have a Log Group that includes several Log Streams (from several EC2 instances). Is there any way to simply "tail" the consolidated logs in the group? If I click "Search Events" that shows the consolidated logs but the button that jumps to the end of the logs is grayed out. I have to manually plug in the date and time. I also tried the aws cli, but aws logs get-log-events requires a single log stream name to be specified.
- 1I wish, but it doesn't seem to be available. You might consider a service like papertrailapp.com - I've used them and it's awesome.ceejayoz– ceejayoz2015-08-10 21:40:45 +00:00Commented Aug 10, 2015 at 21:40
- 3awslogs should solve your problem quite nicely without introducing yet-another service in between you an your logs. (disclaimer: I'm the Author of awslogs) github.com/jorgebastida/awslogsJorge Bastida– Jorge Bastida2015-11-06 16:19:21 +00:00Commented Nov 6, 2015 at 16:19
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3 Answers
This is now possible directly using AWS CLI v2. For example:
aws logs tail --since 1d --follow /aws/lambda/my_func will tail and continuously watch CloudWatch logs from 1 day ago and forward into the future.
More here: https://awscli.amazonaws.com/v2/documentation/api/latest/reference/logs/tail.html
A couple of command tools for a CloudWatch tail:
I was really disappointed with awslogs and cloudwatch-logs-tail so I made my own tool called Saw that efficiently streams CloudWatch logs to the console (and colorizes the JSON output):
You can install it on MacOS with:
brew tap TylerBrock/saw brew install saw It has a bunch of nice features like the ability to automatically expand (indent) the JSON output (try running the tool with --expand):
saw watch my_log_group --expand Got a Lambda you want to see error logs for? No Problem:
saw watch /aws/lambda/my_func --filter error Saw is great because the output is easily readable and you can stream logs from entire log group, not just a single stream in the group. Filtering and watching streams with a certain prefix is also just as easy!
- 1Thanks for building saw - looks interesting. Will try it out.crashpoint_zero– crashpoint_zero2018-09-18 12:56:41 +00:00Commented Sep 18, 2018 at 12:56