The sync frequency should be part of the syncLoop and resync no
less often than every X seconds. The current implementation runs
even if a config update was delivered less than X seconds ago.
Different information is needed to perform setup versus teardown. It
makes sense to separate these two interfaces since when we call teardown
from the reconciliation loop, we cannot rely on having the
information provided by the api definition of the volume.
Determines the set of active volumes versus the set of valid volumes
defined by the manifests. If there is an active volume that is not
defined in any of the manifests, deletes and cleans up that volume.
math.MaxInt64 represents 8 exabytes, which is a good limit for memory.
Also, this is the type used by Docker, so it's not possible to get any
value bigger than math.MaxInt64 as memory limit (both ram and swap) on a
Docker container.
Relevant discussion at #589 (more precisely,
https://github.com/GoogleCloudPlatform/kubernetes/pull/589#issuecomment-50640605).
This makes two main changes:
- Runs syncPod in a separate Go routine (and enforces only one of those
runs at a time).
- Uses the pod list to determine if a container should be running or
should be killed (used to use the output of syncPod).
Since Docker pulls are synchronized by the Docker daemon we still block
on that, but pods can now be removed and prepared for starting without
blocking on long pulls.
Also transfer the Kubelet from using ContainerManifest.ID to source specific
identifiers with namespacing. Move goroutine behavior out of kubelet/ and
into integration.go and cmd/kubelet/kubelet.go for better isolation.
The pause image is a 240KB image that simply pauses waiting on a signal.
Use this for the net container which only needs to act as a placeholder.
Current net image is ~2.5MB. From my tests, this reduces startup time
for the net container from ~14s to ~6s.
The -etcd_servers flag is used inconsistently by the Kubernetes commands,
both externally and internally.
This patch fixes the issue by using the same type to represent a list of
etcd servers internally, and declares the -etcd_servers flag consistently
across all commands.
This patch should be 100% backwards compatible with no changes in behavior.
