Gitlab does not survive Redis upgrade/restart

When redis daemon is restarted (for example when redis package is upgraded), Gitlab fails and does not recover. It should reconnect to redis automatically or handle that situation somehow gracefuly. Or it should at least crash so it can be restarted automatically. Now it stays up and gives error 500 to everyone.

In solved dhis issue upgrading the redis-server package. As the de fault repository has no new versio I installed from a ppa repo.

See my comments

mentioned in issue #2445 (closed)

Upgrading Redis server is not very practical on stable Debian.

mentioned in merge request !1251 (merged)

Status changed to closed by commit 30039dae

mentioned in commit 30039dae

mentioned in commit 8bd419d9

mentioned in merge request !14785