My earlier post was incorrect-- sorry! You do need to specifically request the logs for a backend. You can do that by passing the backend name as the version name, e.g.:
appcfg.py request_logs --version=<backend_name> <project_dir> <outfile> You can add the --include_all flag to see details of which instance handled the request. To see the logs for a particular backend instance only, you can filter by its vhost. E.g., to see the logs for the 2nd instance of a backend named 'worker', this should work: appcfg.py request_logs --version="worker" --vhost="2.worker.<your_appid>. appspot.com" <project_dir> <outfile> On Thu, Jan 19, 2012 at 5:19 AM, Dave Loomer <[email protected]> wrote: > Amy, I don't think it has anything to do with flushing or delays, as > even when I run with the --num_days=2 option, I still only get > requests for frontend objects (HTML, images, etc.) from the past two > days. In reality, since my app is not yet "launched" I probably have > 100x as many log entries for backends as for frontends in the admin > console. I use logging.info quite liberally, and can find plenty of > Info-level entries in the admin console from my backends, so this > seems unrelated to the --severity option as well (and I have tried > playing around with severity levels to no avail). > > What additional information would you like for me? The exact command I > issue from the shell is: > > appcfg.py --no_cookies --email=<[email protected]> --passin -- > num_days=2 request_logs "/<path>/mn-live" "/log.txt" > > > On Jan 15, 7:00 pm, Amy Unruh <[email protected]> wrote: > > Dave, > > > > The same logs include both backend and frontend instance logging- they > are > > not separated. You could be experiencing a delay before long-running > > backend log writes get flushed. > > You might be interested in the LogService API, > > > http://code.google.com/appengine/docs/python/backends/logserviceapi.html > > which lets you periodically flush logs during long-running requests, and > to > > examine an application's request logs and application logs. > > > > > > > > > > > > > > > > On Sun, Jan 15, 2012 at 3:27 AM, Dave Loomer <[email protected]> wrote: > > > The docs for downloading logs make no specific mention of backends, > > > and from my attempts it seems that you can only download logs for your > > > frontend. That would be strange though, and to make matters worse a > > > web search for "google app engine download backend logs" (no quotes > > > obvs.) reveals nothing relevant. Either I'm a true pioneer here or no > > > one else has had any troubles with this -- or no one else cares. Here > > > is what I've tried. > > > > > First, the documented syntax (which gets you the frontend logs - no > > > issues here): > > > appcfg.py request_logs myapp/ mylogs.txt > > > > > So to get the backend logs I have tried: > > > > > -------- > > > appcfg.py backends request_logs myapp/ mylogs.txt <backend-name> > > > (Returns the error: appcfg.py: error: Expected a <directory> and > > > <action> argument.) > > > > > -------- > > > appcfg.py backends request_logs myapp/ <backend-name> mylogs.txt > > > (As expected, returns the same error: appcfg.py: error: Expected a > > > <directory> and <action> argument.) > > > > > appcfg.py seems confused by "backends request_logs" so I then tried, > > > without the "backends" argument: > > > -------- > > > appcfg.py request_logs myapp/ <backend-name> mylogs.txt > > > (Returns the error: appcfg.py: error: Expected a <directory> argument > > > and an <output_file> argument.) > > > > > -------- > > > appcfg.py request_logs myapp/ mylogs.txt <backend-name> > > > (Same thing: returns the error: appcfg.py: error: Expected a > > > <directory> argument and an <output_file> argument.) > > > > > And there is also the documented -vhost to restrict by domain: > > > -------- > > > appcfg.py --vhost=http://<backend-name>.<app-name>.appspot.com > > > request_logs myapp/ mylogs.txt > > > (console just shows that is downloading a frontend version number, and > > > the result is that I get nothing downloaded, probably because there > > > are no requests going to my frontend using my backend host name.) > > > > > So ... did Google really leave this out, or what am I missing? > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google App Engine" group. > > > To post to this group, send email to [email protected] > . > > > To unsubscribe from this group, send email to > > > [email protected]. > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. 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