Summary of kubenertes 1.16 cluster deployment problems

Install and use virtual box Installed below CentOS7.5, Use Easypack Under the Ansible One click installation script kubernetes1.16 and dashbaord And coredns Installation , There are two problems in the process , It is arranged as follows .

Version changes

Only do the Kubernetes Version changes

Components	Previous version	current version
Kubernetes	1.15.0	1.16.0
Docker	18.09.7	18.09.7
ETCD	3.3.13	3.3.13
FLANNEL	0.10.0	0.11.0

problem 1：coredns Installation failed

reason ： coredns.yml Medium Deployment Of apiVersion It's written as extensions/v1beta1,extensions/v1beta1 It is discarded, which leads to execution errors

core.yml An example file is shown below

[[email protected] ansible]# cat /etc/k8s/coredns/coredns.yaml # __MACHINE_GENERATED_WARNING__ ... Omit --- apiVersion: extensions/v1beta1 kind: Deployment metadata:   name: coredns   namespace: kube-system   labels:     k8s-app: kube-dns     kubernetes.io/cluster-service: "true"     addonmanager.kubernetes.io/mode: Reconcile     kubernetes.io/name: "CoreDNS" ... Omit [[email protected] ansible]#

Corresponding method ： Modified into apps/v1 that will do

[[email protected] templates]# git diff coredns.yaml diff --git a/k8s/ansible/coredns/templates/coredns.yaml b/k8s/ansible/coredns/templates/coredns.yaml index 96abe75..69af15a 100644 --- a/k8s/ansible/coredns/templates/coredns.yaml +++ b/k8s/ansible/coredns/templates/coredns.yaml @@ -77,7 +77,7 @@ data:         loadbalance     }  --- -apiVersion: extensions/v1beta1 +apiVersion: apps/v1  kind: Deployment  metadata:   name: coredns [[email protected] templates]#

problem 2: kubectl get cs Is shown as unknown Examples of error messages are as follows ： [[email protected] ansible]# kubectl get cs NAME                AGE scheduler            <unknown> controller-manager  <unknown> etcd-0              <unknown> [[email protected] ansible]#

It doesn't seem to have much impact , Not corresponding yet , The subsequent reasons will continue to be updated after confirmation .