The upstart/init.d scripts show no output

When I run an init.d script e.g. "/etc/init.d/grr-http-server start" it does not show me any output.

Make sure that the "START" parameter in the corresponding default file, e.g. "/etc/default/grr-http-server", has been changed to "yes".

I cannot start any/some of the GRR services using the init.d scripts

When it run an init.d script e.g. "/etc/init.d/grr-http-server start" it indicates it started the service although when I check with "/etc/init.d/grr-http-server status" it says it is not running.

You can troubleshoot by running the services in the foreground, e.g. to run the HTTP Front-end server in the foreground:

sudo grr_server --start_http_server --verbose

Any/some of the GRR services are not running correctly

Check if the logs contain an indication of what is going wrong.

Troubleshoot by running the services in the foreground, e.g. to run the UI in the foreground:

sudo grr_server --verbose --component frontend

Cannot open

error while loading shared libraries: cannot open shared object file: No such file or directory

The libtsk3 library cannot be found in the ld cache. Check if the path to is in /etc/ (or equivalent) and update the cache:

sudo ldconfig

Cron Job view reports an error

Delete and recreate all the cronjobs using GRR console:

aff4.FACTORY.Delete("aff4:/cron", token=data_store.default_token)
from grr.server.aff4_objects import cronjobs

Missing Rekall Profiles

If you get errors like:

Error loading profile: Could not load profile nt/GUID/ABC123...
Needed profile nt/GUID/ABC123... not found!

when using rekall, you’re missing a profile (see the Rekall FAQ and blogpost for some background about what this means).

The simplest way to get this fixed is to add it into Rekall’s list of GUIDs, which is of great benefit to the whole memory forensics community. You can do this yourself via a pull request on rekall-profiles, or simply email the GUID to Once it’s in the public rekall server, the GRR server will download and use it automatically next time you run a rekall flow that requires that profile. If your GRR server doesn’t have internet access you’ll need to run the GetMissingProfiles function from the GRR console on a machine that has internet access and can access the GRR database, like this:

from grr.server import rekall_profile_server