okd/upgrade cluster.txt at main · sjha1010/okd · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
-Upgrade the cluster

Steps:

Upgrade kubeadm on the Control Plane node
Drain the Control Plane node
Plan the upgrade (kubeadm upgrade plan)
Apply the upgrade (kubeadm upgrade apply)
Upgrade kubelet & kubectl on the control Plane node
Uncordon the Control Plane node

-Update kubeadm
apt-get update && apt-get install -y kubeadm=1.20.1-00

kubeadm upgrade plan

-Drain the control plane node:

kubectl drain okdmaster --ignore-daemonsets --delete-local-data

-On the control plane node, run:

kubeadm upgrade apply v1.20.1

- Uncordon the control plane node:

kubectl uncordon okdmaster

- Upgrade kubelet and kubectl

 apt-get update && apt-get install -y kubelet=1.20.1-00 kubectl=1.20.1-00

-Restart kubelet
systemctl daemon-reload
systemctl restart kubelet

-Check version

kubectl get nodes
NAME        STATUS   ROLES                  AGE     VERSION
okdclient   Ready    <none>                 2d22h   v1.19.4
okdmaster   Ready    control-plane,master   2d22h   v1.20.1


On worker node

Drain the node
Upgrade kubeadm on the node
Upgrade the kubelet configuration (kubeadm upgrade node)
Upgrade kubelet & kubectl
Uncordon the node


-Update kubeadm
apt-get update && apt-get install -y kubeadm=1.20.1-00


-Drain the control plane node:

 kubectl drain okdclient --ignore-daemonsets

-On the  node, run:

kubeadm upgrade node

- Upgrade kubelet and kubectl

 apt-get update && apt-get install -y kubelet=1.20.1-00 kubectl=1.20.1-0

-Restart service

systemctl daemon-reload
systemctl restart kubelet

-Unconrdon

kubectl uncordon okdclient

- check status
kubectl status kubelet