When winbindd children are killed by the parent with a SIGTERM, they call the parent's sigterm processing function, which causes them to delete the winbindd pipe in /tmp/.winbindd/.
Even though the parent is still alive no more connections can be made.
This is a showstopper (it also exists in 3.0.x).
How has this not been seen in the field yet ?
Created attachment 3322 [details]
Patch for 3.0.x
Created attachment 3323 [details]
Patch for 3.2
Fixed in 3.2, 3.0, 3.3 trees. Karolin this must be pulled into 3.2-stable.
*** Bug 5553 has been marked as a duplicate of this bug. ***