* Add MAX_PODS_PER_NODE env so that GCE/GKE user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63621](https://github.com/kubernetes/kubernetes/pull/63621), [@grayluck](https://github.com/grayluck))

## Changelog since v1.8.12

### Other notable changes

* Add MAX_PODS_PER_NODE env so that user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63466](https://github.com/kubernetes/kubernetes/pull/63466), [@grayluck](https://github.com/grayluck))

   ([#123341](https://githu...

  kubeadm no longer sets the node-mask automatically on IPv6 deployments, you must check that your IPv6 service subnet mask is compatible with the default node mask /64 or set it accordingly.

- ACTION REQUIRED for custom scheduler plugin developers:
  `EventsToRegister` in the `EnqueueExtensions` interface gets `ctx` in the parameters and `error` in the return values.
  Please change your plugins' implementation accordingly. ([#126113](https://github.com/kubernetes/kubernetes/pull/126113), [@googs1025](https://github.com/googs1025)) [SIG Node, Scheduling, Storage and Testing]

and the value <code>1.1</code> is represented as a <code>float32</code> or a <code>float64</code>
depending on the type argument for <code>f</code>.
Accordingly, if <code>f</code> is instantiated with a <code>float32</code> type,
the numeric value of the expression <code>P(1.1) + 1.2</code> will be computed
with the same precision as the corresponding non-constant <code>float32</code>

* Add MAX_PODS_PER_NODE env so that GCE/GKE user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63451](https://github.com/kubernetes/kubernetes/pull/63451), [@grayluck](https://github.com/grayluck))

- Upgrade Stackdriver Logging Agent addon image to 0.6-1.6.0-1 to use Fluentd v1.2. This provides nanoseconds timestamp granularity...

    * 2. IPv4: api-server will assign an IP from a `service-cluster-ip-range` that is `ipv4` (either the primary or the secondary, according to how they were configured).
    * 2. IPv6: api-server will assign an IP from a `service-cluster-ip-range` that is `ipv6` (either the primary or the secondary, according to how they were configured).
    * Notes (v1.16):
    * 1. IPVS is the only proxy supported (as of v1.16 ) by Dualstack.

- Removal of the CSI `NodePublish` path by the kubelet is deprecated. This must be done by the CSI plugin according to the CSI spec. ([#101441](https://github.com/kubernetes/kubernetes/pull/101441), [@dobsonj](https://github.com/dobsonj))