Dependency solver overloaded

[MrMMorris]

I was provisioning a bunch of servers and at one point, where there may have been up to 6 servers trying to resolve a run list, I ran into this error on at least one of them:

Error Resolving Cookbooks for Run List:
================================================================================


Server Unavailable
------------------
The Chef Server is temporarily unavailable


Server Response:
----------------
Dependency solver overloaded. Try again later.

Not sure if this is a one-off, but I thought I'd make you aware in case metal is too much awesome for chef-server to handle 😏

[jkeiser]

@MrMMorris What chef server were you running this against?

[MrMMorris]

@jkeiser hosted chef. Not sure the version at the time.

[jkeiser]

Wow! I'm going to close this for now as a likely one-off but if we see it a lot we'll pass it to the server team. Thanks :)

[matthiasr]

We are also seeing this regularly, in particular when kicking off chef-client runs on more than 5-10 servers at the same time (not provisioning). There seems to be a hard concurrency limit there…? We have more runs than that ongoing all the time but it bites reproducibly when the beginning of the runs is synchronized.

This is on open source Chef Server 11.1.5. I'll try fiddling a bit with erchef['depsolver_worker_count'], only just found that.

[jkeiser]

Can you file a bug against the server? That seems like bad mojo!