@aylei I saw you assigned the original issue, hopefully you hadn't spent much time on it, but figured I'd take a crack

Thanks! I have not looked into the issue yet😉

/smoke-test -k test_log_collection_to_aws_cloudwatch

The UT failure looks irrelevant, I will take a look.

Could you fix the document build @clayrosenthal ?

Ok should be all fixed now, thanks @aylei !

/smoke-test -k test_log_collection_to_aws_cloudwatch

Hi @clayrosenthal ! I notice that there is an issue of fallback logs:

$ cat /tmp/fluentbit.log
...
[2025/07/23 12:08:26] [error] [/tmp/fluent-bit/plugins/out_file/file.c:553 errno=2] No such file or directory
[2025/07/23 12:08:26] [error] [output:file:file.1] error opening: /tmp/skypilot_logs_fallback.log/tail.

And looks like the logs will always get output to fallback logs:

$ cat /home/ubuntu/.sky/logging/fluentbit.yaml
pipeline:
  inputs:
  - name: tail
    path: ~/sky_logs/*/*.log
    path_key: log_path
    refresh_interval: 1
    processors:
      logs:
      - name: content_modifier
        action: upsert
        key: skypilot.cluster_name
        value: t-log-collection-1q-ca
      - name: content_modifier
        action: upsert
        key: skypilot.cluster_id
        value: t-log-collection-1q-ca-b673d4fd
  outputs:
  - name: cloudwatch_logs
    match: '*'
    region: us-east-1
    log_group_name: skypilot-logs
    log_stream_prefix: skypilot-t-log-collection-1q-ca-b673d4fd-
    auto_create_group: 'true'
  - name: file
    match: '*'
    path: /tmp/skypilot_logs_fallback.log
    format: out_file

Do you have any ideas about this? @clayrosenthal

Huh, I can try and change the fallback log options, but maybe not necessary as the log files should already exist. But do your AWS access have permissions to write to cloudwatch?

Huh, I can try and change the fallback log options, but maybe not necessary as the log files should already exist. But do your AWS access have permissions to write to cloudwatch?

Yes, the log was also sent to cloudwatch in this case.

/smoke-test -k test_log_collection_to_aws_cloudwatch

/smoke-test -k test_log_collection_to_aws_cloudwatch

Let's merge this first and keep the fallback logs issue as a follow-up, thanks for the making this happen @clayrosenthal !