I've checked that the JSON lines emitted in https://gitlab.com/gitlab-org/gitlab/-/merge_requests/55933 are showing up in `/var/log/gitlab/puma/puma_stderr.log` on the API nodes, but nothing from the `puma.stderr` tag seems to be inserted into Elasticsearch at the moment: https://log.gprd.gitlab.net/goto/b71d63d5bb9a436f6a2d5c4fb9cb72cb Logs with the `puma.stdout` tag are there fine. I checked the `td-agent.conf` config on my test instance, and as far as I can tell, we should be getting the JSON lines, as well as the unmatched values: ```json {"unmatched_line":"DEPRECATION WARNING: using BatchLoader.for in GraphQL is deprecated. Use BatchLoader::GraphQL.for instead or return BatchLoader::GraphQL.wrap from your resolver.","tag":"puma.stderr","environment":"gprd","hostname":"api-01-sv-gprd","fqdn":"api-01-sv-gprd.c.gitlab-production.internal","stage":"main","shard":"default","tier":"sv","type":"api","time":"2021-03-12T10:05:19.094Z"} ``` @jarv Is this data getting dropped somewhere?