Congratulations on the release of version 1.20. The third release in 2020, in which 11 features were announced stable, 15 were transferred to beta and 16 new ones were added in the alpha stages.
Release Logo, . , .
, dockershim. , , , , , , docker , .
, , , 1.20 Probe exec.
, , . HTTP/TCP- (exec probe) - (, rabbitmqctl status) .
:
timeoutSeconds:
, . , exec probe , .
exec probe timeoutSeconds:
— , .
timeoutSeconds:
, . — 1 , , .
— . docker, . readinessProbe, .
:
alpha feature API Priority and Fairness (APF) - 1.19 — . 1.20 beta, alpha. .
! node-role.kubernetes.io/master
taint node-role.kubernetes.io/master:NoSchedule
, kubeadm control-plane, deprecated . node-role.kubernetes.io/control-plane
taint node-role.kubernetes.io/control-plane:NoSchedule
.
kubeadm serviceSubnet podSubnet.
20 . , IPv4 /12 (/13, /14 ..), IPv6 — /108, /112.
--node-cidr-mask-size
, , , .
API . , API --insecure-port 8080
IPv4/IPv6 dual stack . IPv4, IPv6 ( "IPv6DualStack" feature gate). API. Kind: Service
— ipFamily
: ipFamilyPolicy
, ipFamilies
, clusterIPs
. , , IPv4, feature gate. TODO: , Headless Service, clusterIP: None
(, kubeadm alpha certs
kubeadm certs
. , .
GracefulNodeShutdown
— kubelet , . gracefulShutdown preStop .
kubectl debug
, . , . — debug
, . , .
CVE-2020-8559 , API, metrics-server prometheus adapter.
CronJob controller v2. , , , . , feature gate.