Due to the dockerhub rate limiting, we had to find an alternative solution. We've mirrored the dockerhub
images into our own.
Additionally, our own busybox, httpd, and nginx images also have Windows support.
Current gcRegistry configuration is responsible for both etcd and pause images. We should
use the upstream pause image in testing.
The etcd image doesn't have Windows support yet, so we need to have a separate configuration
for it.
Both images are now sane multi-architecture images and should fix the
kube-proxy container image in the same way.
Signed-off-by: Sascha Grunert <mail@saschagrunert.de>
In downstream contexts, it's extremely useful to be able to combine
all the "testable" images in Kubernetes into a single repo so that
a user could mirror these offline in one chunk, and audit the set of
images for changes. For instance, within OpenShift we would like to
have a single place we can place all the images used by all the tests
with a single authentication scheme. While some images are not "real"
and can't be mirrored (for instance, the images that point to an
auth protected registry), that is not the majority.
This code makes it possible to specify an environment variable
KUBE_TEST_REPO that maps the static strings of the registry to a
single repository by placing the uniqueness in a tag. For instance:
KUBE_TEST_REPO=quay.io/openshift/community-e2e-images
would translate `k8s.gcr.io/prometheus-to-sd:v0.5.0` to `quay.io/openshift/community-e2e-images:e2e-30-k8s-gcr-io-prometheus-to-sd-v0-5-0-6JI59Yih4oaj3oQOjRfhyQ`.
The tag is a safe form of the name, plus the index (the constant within
manifest.go), plus a hash of the full input. The length of the tag is
constrained to the minimum of hash + index + the safe name.
The public method is changed to return two maps - index to original
name and index to test repo name. These maps would be the same if
the env var is not set.
For testing certain features, the BusyBox image does not provide all the
tools that are needed. Notably 'dd' from BusyBox does not support
direct-io that is required for skipping caches while doing writes and
reads on a Block-mode PVC attached to different nodes.
The multi-arch container images used in tests live in quay.io which
doesn't support nesting. By making the /volume/ images repo configurable,
we are able to override them despite our current limitation.
Signed-off-by: Rafael Fonseca <r4f4rfs@gmail.com>
