These 3rd-party softwares have different features and different architectures. If you really want to go down this path, the easiest way is to study the 3rd-party software and how it is integrated with GAE, GKE, and GCE. The very idea of using these softwares on the first place is that they manage the streaming of your logs. Based on a quick search, some of them even have sample GAE projects <https://github.com/obmarg/elk>on GitHub.
I would also recommend picking the features missing from your current Log Viewer or Stackdriver, if any, and submit <https://issuetracker.google.com/>a feature request <https://issuetracker.google.com> to Google Cloud Platform as described in this article <https://developers.google.com/issue-tracker/>. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/f3f5c912-08b6-4b87-a522-7f99b6963b51%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
