If your Hockeypuck server is reconciling with other keyservers, and it becomes unreachable for too long, it may not be able to catch up when it tries to re-join its peers.
Download a recent keyserver dump that will be closer to the contents of your peers.
Drop all PostgreSQL foreign key, unique and primary key constraints for bulk loading over an existing database.
Use hockeypuck load with your normal operating configuration file to load the recent dump files. Hockeypuck will use the prefix tree to skip over keys which have already been loaded into the database.
We'll now need to rebuild the constraints we dropped earlier, with the new key data appended to the PostgreSQL and prefix tree databases:
$ hockeypuck db --config /path/to/hockeypuck.conf --dedup --create-constraints
You should now be able to start the Hockeypuck service back up, and re-join reconciliation with your peers.