By non-sensitive log producers in this context we mean applications/services that currently are not present in Logstash but should. Additionally their logs shouldn't contain anything considered sensitive to non-root users (e.g. passwords or other secrets).
A first audit can be found at https://phabricator.wikimedia.org/T198756#4594061 for applications that have logs on disk and https://phabricator.wikimedia.org/T198756#4430601 for applications logging to the central syslog hosts already.
[x] Ship peopleweb apache2 error logs to ELK T209860
[x] Get phabricator apache error logs into logstash T141895
[x] Get icinga alerts into logstash T7
[x] Jenkins daemon logs T143733
 Gerrit logs T141324
[x] PuppetDB logs T210458
 Prometheus service logs T210455
 Swift logs T63780