gitaly logs not showing up in logstash

Noticed while investigating https://gitlab.com/gitlab-com/infrastructure/issues/2503 I'm not seeing any gitaly log events in logstash which is making things difficult to troubleshoot as we don't keep many logs around on the server.

https://log.gitlap.com/app/kibana#/discover?_g=()&_a=(columns:!(program),index:'logstash-*',interval:auto,query:(query_string:(analyze_wildcard:!t,query:%22nfs-file-11%22)),sort:!('@timestamp',desc))