Under certain circumstances, the use of `StorageDriver.GetContent` can
result in unbounded memory allocations. In particualr, this happens when
accessing a layer through the manifests endpoint.
This problem is mitigated by setting a 4MB limit when using to access
content that may have been accepted from a user. In practice, this means
setting the limit with the use of `BlobProvider.Get` by wrapping
`StorageDriver.GetContent` in a helper that uses `StorageDriver.Reader`
with a `limitReader` that returns an error.
When mitigating this security issue, we also noticed that the size of
manifests uploaded to the registry is also unlimited. We apply similar
logic to the request body of payloads that are full buffered.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
* Reorganize registry deployment guide
Also add information about pushing non-distributable
layers to private registries
Also add an example of running a registry as a swarm service
If the client doesn't support manifest lists, the registry will
rewrite a manifest list into the old format. The Docker-Content-Digest
header should be updated in this case.
Signed-off-by: Oleg Bulatov <oleg@bulatov.me>
In some conditions, regulator.exit may not send a signal to blocked
regulator.enter.
Let's assume we are in the critical section of regulator.exit and r.available
is equal to 0. And there are three more gorotines. One goroutine also executes
regulator.exit and waits for the lock. Rest run regulator.enter and wait for
the signal.
We send the signal, and after releasing the lock, there will be lock
contention:
1. Wait from regulator.enter
2. Lock from regulator.exit
If the winner is Lock from regulator.exit, we will not send another signal to
unlock the second Wait.
Signed-off-by: Oleg Bulatov <obulatov@redhat.com>
* Add instructions to remove also proxy_set_header Host
Add instructions to remove also proxy_set_header Host when using ELB.
In my case I only had commented out X-Real-IP, X-Forwarded-For, X-Forwarded-Proto, but not Host, and I was getting lots of retrys in Docker. Commenting the proxy_set_header Host fixed the issue, as recommended in https://github.com/moby/moby/issues/16949
Aaron Lehmann
Stephen Day
Riyaz Faizullabhoy
Misty Stanley-Jones
Misty Stanley-Jones
YuJie
Derek McGowan
Stephen J Day
fate-grand-order
John Mulhausen
Jim Galasyn
leonstrand
Igor Morozov
Ina Panova
Pieter Scheffers
Wassim Dhif
Oleg Bulatov
Wang Jie
Oleg Bulatov
Luca Bruno
Kevin Robatel
Chaos John
Shiela M Parker