The cloudprovider is being refactored out of kubernetes core. This is being
done by moving all the cloud-specific calls from kube-apiserver, kubelet and
kube-controller-manager into a separately maintained binary(by vendors) called
cloud-controller-manager. The Kubelet relies on the cloudprovider to detect information
about the node that it is running on. Some of the cloudproviders worked by
querying local information to obtain this information. In the new world of things,
local information cannot be relied on, since cloud-controller-manager will not
run on every node. Only one active instance of it will be run in the cluster.
Today, all calls to the cloudprovider are based on the nodename. Nodenames are
unqiue within the kubernetes cluster, but generally not unique within the cloud.
This model of addressing nodes by nodename will not work in the future because
local services cannot be queried to uniquely identify a node in the cloud. Therefore,
I propose that we perform all cloudprovider calls based on ProviderID. This ID is
a unique identifier for identifying a node on an external database (such as
the instanceID in aws cloud).
Automatic merge from submit-queue (batch tested with PRs 40932, 41896, 41815, 41309, 41628)
Add custom CA file to openstack cloud provider config
**What this PR does / why we need it**: Adds ability to specify custom CA bundle file to verify OpenStack endpoint against. Useful in tests and PoC deployments. Similar to what https://github.com/kubernetes/kubernetes/pull/35488 did for authentication.
**Which issue this PR fixes**: None
**Special notes for your reviewer**: Based on https://github.com/kubernetes/kubernetes/pull/35488 which added support for custom CA file for authentication.
**Release note**:
This change migrates the 'openstack' provider and 'keystone'
authenticator plugin to the newer gophercloud/gophercloud library.
Note the 'rackspace' provider still uses rackspace/gophercloud.
Fixes#30404
Automatic merge from submit-queue (batch tested with PRs 40297, 41285, 41211, 41243, 39735)
fix variables in openstack.go to keep camel casing and remove unused var
In cases where insecure OpenStack endpoint is to be used
(e.g., when testing), gophercloud will fail to connect
to such endpoints. This patch adds support for custom CA
file configuration option, which, when provided, will
make gophercloud validate OpenStack endpoint against
certificate(s) read from file specified in that option.
Automatic merge from submit-queue
Curating Owners: pkg/cloudprovider
cc @runseb @justinsb @kerneltime @mikedanese @svanharmelen @anguslees @brendandburns @abrarshivani @imkin @luomiao @colemickens @ngtuna @dagnello @abithap
In an effort to expand the existing pool of reviewers and establish a
two-tiered review process (first someone lgtms and then someone
experienced in the project approves), we are adding new reviewers to
existing owners files.
If You Care About the Process:
------------------------------
We did this by algorithmically figuring out who’s contributed code to
the project and in what directories. Unfortunately, that doesn’t work
well: people that have made mechanical code changes (e.g change the
copyright header across all directories) end up as reviewers in lots of
places.
Instead of using pure commit data, we generated an excessively large
list of reviewers and pruned based on all time commit data, recent
commit data and review data (number of PRs commented on).
At this point we have a decent list of reviewers, but it needs one last
pass for fine tuning.
Also, see https://github.com/kubernetes/contrib/issues/1389.
TLDR:
-----
As an owner of a sig/directory and a leader of the project, here’s what
we need from you:
1. Use PR https://github.com/kubernetes/kubernetes/pull/35715 as an example.
2. The pull-request is made editable, please edit the `OWNERS` file to
remove the names of people that shouldn't be reviewing code in the
future in the **reviewers** section. You probably do NOT need to modify
the **approvers** section. Names asre sorted by relevance, using some
secret statistics.
3. Notify me if you want some OWNERS file to be removed. Being an
approver or reviewer of a parent directory makes you a reviewer/approver
of the subdirectories too, so not all OWNERS files may be necessary.
4. Please use ALIAS if you want to use the same list of people over and
over again (don't hesitate to ask me for help, or use the pull-request
above as an example)
This method has been unused by k8s for some time, and yet is the last
piece of the cloud provider API that encourages provider names to be
human-friendly strings (this method applies a regex to instance names).
Actually removing this deprecated method is part of a long effort to
migrate from instance names to instance IDs in at least the OpenStack
provider plugin.
Automatic merge from submit-queue
openstack: Implement the `Routes` provider API
``` release-note
Implement the Routes provider API for OpenStack using Neutron extraroute extension. This removes the need for flannel/etc where supported. To use, ensure all your nodes are on the same Neutron (private) network and specify the router ID in new `[Route]` section of provider config:
[Route]
router-id = <router UUID>
```
This change implements the Routes API using Neutron's "extraroute"
extension.
To use, this requires all the nodes to be on the same Neutron network
and the UUID of the Neutron router on that network.
Required cloud provider config section:
[Route]
router-id = <UUID of Neutron router>
Ensure kube-controllermanager is started with (non-default)
`--allocate-node-cidrs=true` and set `--cluster-cidr` to the POD
super-subnet (a private /16 would be reasonable).
Based on an earlier version by @timbyr (#19473)
Update EnsureLoadBalancer/UpdateLoadBalancer API to use node objects.
In particular, this allows us to take the node address directly from the
node.Status.Addresses and avoids a name -> instance lookup.
Automatic merge from submit-queue
Don't rely on device name provided by Cinder
See issue #33128
We can't rely on the device name provided by Cinder, and thus must perform
detection based on the drive serial number (aka It's cinder ID) on the
kubelet itself.
This patch re-works the cinder volume attacher to ignore the supplied
deviceName, and instead defer to the pre-existing GetDevicePath method to
discover the device path based on it's serial number and /dev/disk/by-id
mapping.
This new behavior is controller by a config option, as falling back
to the cinder value when we can't discover a device would risk devices
not showing up, falling back to cinder's guess, and detecting the wrong
disk as attached.
Automatic merge from submit-queue
Corect filtering of OpenStack LBaaS resources to delete
Neutron's API ignores unknown parameters. When listing pools etc, K8
attempts to filter on "LoadBalancerID", which is not a valid filter.
As such, it is ignored by Neutron, and a list of all pools is
returned. K8 then proceeds to delete each of the pools.
Instead, we now double check the resources really belong to the LB
we're trying to delete.
Fixes issue #33759
See issue #33128
We can't rely on the device name provided by Cinder, and thus must perform
detection based on the drive serial number (aka It's cinder ID) on the
kubelet itself.
This patch re-works the cinder volume attacher to ignore the supplied
deviceName, and instead defer to the pre-existing GetDevicePath method to
discover the device path based on it's serial number and /dev/disk/by-id
mapping.
This new behavior is controller by a config option, as falling back
to the cinder value when we can't discover a device would risk devices
not showing up, falling back to cinder's guess, and detecting the wrong
disk as attached.
GetDevicePath was currently coded to only support Nova+KVM style device
paths, update so we also support Nova+ESXi and leave the code such that
new pattern additions are easy.
Neutron's API ignores unknown paramaters. When listing pools etc, K8
attempts to filter on "LoadBalancerID", which is not a valid filter.
As such, it is ignored by Neutron, and a list of all pools is
returned. K8 then proceeds to update each of the pools.
Instead, we now double check the resources really belong to the LB
we're trying to update.
At master volume reconciler, the information about which volumes are
attached to nodes is cached in actual state of world. However, this
information might be out of date in case that node is terminated (volume
is detached automatically). In this situation, reconciler assume volume
is still attached and will not issue attach operation when node comes
back. Pods created on those nodes will fail to mount.
This PR adds the logic to periodically sync up the truth for attached volumes kept in the actual state cache. If the volume is no longer attached to the node, the actual state will be updated to reflect the truth. In turn, reconciler will take actions if needed.
To avoid issuing many concurrent operations on cloud provider, this PR
tries to add batch operation to check whether a list of volumes are
attached to the node instead of one request per volume.
More details are explained in PR #33760
In order to be able to use new mounter library, this PR adds the
mounterPath flag to kubelet which passes the flag to the mount
interface. If flag is empty, mount uses default mount path.
This allows security groups to be created and attached to the neutron
port that the loadbalancer is using on the subnet.
The security group ID that is assigned to the nodes needs to be
provided, to allow for traffic from the loadbalancer to the nodePort
to be refelected in the rules.
This adds two config items to the LoadBalancer options -
ManageSecurityGroups (bool)
NodeSecurityGroupID (string)
Automatic merge from submit-queue
openstack: Support config-drive and improve CurrentNodeName, GetZone
This PR adds support for fetching local instance metadata via config-drive (as well as querying metadata service), and surfaces some additional metadata information (from either source):
- `CurrentNodeName` now returns the OpenStack instance name, rather than the current hostname (they might not be the same)
- `GetZone` includes availability zone label in `FailureDomain`
Thanks to @kiall for a WIP implementation of the latter.
Previously the OpenStack provider just returned the hostname in
CurrentNodeName. With this change, we return the local OpenStack
instance name, as the API intended.
