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Update kube-up.sh; fixed a typo!
fixed a typo in kube-up.sh; ```libvert-coreos``` should be ```libvirt-coreos```
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Improve etcd-version-monitor metrics proxying, add etcd 3.1 gprc metr…
Partially addresses https://github.com/kubernetes/kubernetes/issues/56869:
- Fix `etcd-version-monitor` to support etcd 3.1: Add support for the etcd 3.1+ [go-grpc-prometheus](https://github.com/grpc-ecosystem/go-grpc-prometheus) metrics format, which backward incompatibly replaces the 3.0 legacy grpc metric format. Expose the go-grpc-prometheus metrics both in the 3.1 format and in the 3.0 format so systems consuming `etcd-version-monitor` metrics have a clean, simple upgrade path.
- Expose *all* etcd metrics by default, making this a one stop shop for all etcd metrics.
- Expose grpc request latency histogram metrics (`grpc_server_handling_seconds` from [go-grpc-prometheus](https://github.com/grpc-ecosystem/go-grpc-prometheus) metrics format). Rewrite etcd 3.0 legacy metric for latency histograms to the etcd 3.1+ `go-grpc-prometheus` format so there is a single format exported for all etcd versions.
etcd 3.0 to 3.1 upgrade path: Continue to use the `etcd_grpc_requests_total`. Once the upgrade is complete and all etcd nodes are running 3.1, migrate to the `grpc_server_handled_total` metric at your leisure.
This PR reorganizes the code substantially. Previously, the code to proxy etcd metrics was hard coded and limited to a single counter metric. This has been entirely replaced with code that generically filters, rewrites proxied etcd metrics and then aggregates them with custom metrics such as the etcd version metric.
cc @wojtek-t @mml @shyamjvs @cheftako
```release-note
Fix `etcd-version-monitor` to backward compatibly support etcd 3.1 [go-grpc-prometheus](https://github.com/grpc-ecosystem/go-grpc-prometheus) metrics format.
```
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Reintroduce memory limits removed in #55715
**What this PR does / why we need it**: Reintroduce memory limits removed in #55715, in order to make metadata-proxy QoS be guaranteed. Xref #55695.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#55797
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Set NON_MASQUERADE_CIDR in gce/config-test
**What this PR does / why we need it**:
Ref https://github.com/kubernetes/kubernetes/issues/56727.
Follow up of https://github.com/kubernetes/kubernetes/pull/55178. Making test configuration consistent with normal cluster.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #NONE
**Special notes for your reviewer**:
/assign @dnardo @thockin
**Release note**:
```release-note
NONE
```
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Remove do-restart states
**What this PR does / why we need it**: Simplify juju reactive part of the master.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/448
**Special notes for your reviewer**:
**Release note**:
```NONE```
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Fix status messaging when juju masters upgrade
**What this PR does / why we need it**: When upgrading masters we want to not skip the message prompting the admin to trigger an upgrade action.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```
NONE
```
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Add docker-logins config to kubernetes-worker charm
**What this PR does / why we need it**:
This adds a `docker-logins` config option to the kubernetes-worker charm, which allows cluster operators to authenticate against docker registries so kubelet can pull containers from them.
**Release note**:
```release-note
Added docker-logins config to kubernetes-worker charm
```
This needs to be refactored to eventually say all non x86 architectures place a -arch() in the image name to support ppc64el, arm, etc.
Most all gcr.io/google_containers have -arch() image names.
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Lowercase hostnames when used as node names in k8s
**What this PR does / why we need it**: Juju deployments of Kubernetes should lowercase the hostnames when referencing nodes.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/442
**Special notes for your reviewer**:
**Release note**:
```NONE
```
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COS: Keep the docker network checkpoint
This is necessary for enabling the live-restore feature.
**What this PR does / why we need it**:
This is necessary for enabling the live-restore feature on COS.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
COS: Keep the docker network checkpoint
```
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Update CHANGELOG.md
I should've done that in https://github.com/kubernetes/kubernetes/pull/55466. The version was already bumped, this is just to keep track of what changed.
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
We shouldn't upgrade etcd without first warning the user that some etcd
version transitions can't be undone. We don't know what version the user
currently has, so we require either an explicit version and image, or an
interactive acknowledgement of this caveat.
This is modeled after the STORAGE_MEDIA_TYPE prompt just above.
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add yaml-quote for GCE_GLBC_IMAGE
fix a bug that `GCE_GLBC_IMAGE` was not processed by yaml-quote.
```release-note
NONE
```
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Override recycler pod in GCE
**What this PR does / why we need it**:
Override the default nfs and hostpath recycler pod with the busybox image from gcr.io/google-containers. It does this by:
* writing out the new recycler pod spec to /home/kubernetes
* specifying recycler pod arguments to kube-controller-manager,
* adding a hostpath volume to the recycler pod spec in the kube-controller-manager manfiest
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Bump Heapster version to v1.5.0-beta.3
**What this PR does / why we need it**:
Bump Heapster version to v1.5.0-beta.3
**Release note**:
```release-note
NONE
```
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Modify 'restore-from-backup.sh' to work in multinode etcd cluster.
**What this PR does / why we need it**:
This PR modifies cluster/restore-from-backup.sh to work in multinode etcd cluster.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Fix configuration of Metadata Agent daemon set
**What this PR does / why we need it**:
Fixes small errors in Stackdriver Metadata Agent configuration: port number and default version.
**Release note**:
```release-note
Fix port number and default Stackdriver Metadata Agent in daemon set configuration.
```
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Configure metadata concealment iptables rules in node startup.
**What this PR does / why we need it**: Configure iptables rule for metadata concealment at startup so the pod doesn't have to, to reduce memory consumption.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
