kubenetes1.26中安装kubesphere3.4版本

一、安装前环境准备

# kubesphere官网：https://kubesphere.io/zh/docs/v3.4/introduction/what-is-kubesphere/

# 1.kubenetes版本查看
[root@master kubesphere]# kubectl get nodes
NAME     STATUS   ROLES           AGE    VERSION
master   Ready    control-plane   106m   v1.26.0
node1    Ready    work            103m   v1.26.0

# 2.kubesphere安装前环境准备
# https://kubesphere.io/zh/docs/v3.4/installing-on-kubernetes/introduction/prerequisites/

Centos 7.9
cpu内存：4核8G
硬盘：50G

依赖项：yum install -y socat、conntrack、ebtables、ipset

# 2.集群中创建默认StorageClass
# 默认没有，可以自建
创建 StorageClass
设置默认 StorageClass

# 创建storageclass最后
[root@master kubesphere]# cat sc.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: local-storage
provisioner: kubernetes.io/no-provisioner
volumeBindingMode: WaitForFirstConsumer

# 设置为默认StorageClass
ubectl patch storageclass local-storage -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

# 执行查看
[root@master kubesphere]# kubectl get sc
NAME                      PROVISIONER                    RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
local-storage (default)   kubernetes.io/no-provisioner   Delete          WaitForFirstConsumer   false                  54m

PS:上面创建的storageclass 确实可以成功安装kubesphere，但是local-storage配合pvc无法动态创建pv。因此，创建storageclass 也可以使用nfs-storageclass

二、安装kubesphere

# 1.如果配置要求达到8核16G，可以把插件都启用安装上，没有的话就最小化安装
# 执行命令安装
kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.4.1/kubesphere-installer.yaml

kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.4.1/cluster-configuration.yaml

# 2.检查安装日志，上面命令执行完成后，等待10分钟左右可以看到

Start installing monitoring
Start installing multicluster
Start installing openpitrix
Start installing network
**************************************************
Waiting for all tasks to be completed ...
task network status is successful  (1/4)
task openpitrix status is successful  (2/4)
task multicluster status is successful  (3/4)

task monitoring status is successful  (4/4)
**************************************************
Collecting installation results ...

#####################################################
###              Welcome to KubeSphere!           ###
#####################################################

Console: http://192.168.10.20:30880
Account: admin
Password: P@88w0rd
NOTES：
  1. After you log into the console, please check the
     monitoring status of service components in
     "Cluster Management". If any service is not
     ready, please wait patiently until all components
     are up and running.
  2. Please change the default password after login.

#####################################################
https://kubesphere.io             2024-04-17 18:06:26
#####################################################

# 3.使用 kubectl get pod --all-namespaces 查看所有 Pod 在 KubeSphere 相关的命名空间是否正常运行。如果是正常运行，请通过以下命令来检查控制台的端口（默认为 30880）：

[root@master kubesphere]# kubectl get pod --all-namespaces
NAMESPACE                      NAME                                              READY   STATUS    RESTARTS       AGE
kube-system                    calico-kube-controllers-6d6dc86d84-dfdsv          1/1     Running   0              127m
kube-system                    calico-node-r6zrj                                 1/1     Running   0              127m
kube-system                    calico-node-xh8dv                                 1/1     Running   1 (125m ago)   127m
kube-system                    calico-typha-57cbf5b54d-4zc9r                     1/1     Running   0              127m
kube-system                    coredns-567c556887-j9jfb                          1/1     Running   0              133m
kube-system                    coredns-567c556887-mv57p                          1/1     Running   0              133m
kube-system                    etcd-master                                       1/1     Running   0              133m
kube-system                    kube-apiserver-master                             1/1     Running   0              133m
kube-system                    kube-controller-manager-master                    1/1     Running   0              133m
kube-system                    kube-proxy-4lrj6                                  1/1     Running   0              133m
kube-system                    kube-proxy-pdwzp                                  1/1     Running   0              130m
kube-system                    kube-scheduler-master                             1/1     Running   0              133m
kube-system                    snapshot-controller-0                             1/1     Running   0              42m
kubesphere-controls-system     default-http-backend-864f4f5c6b-s6s92             1/1     Running   1 (40m ago)    41m
kubesphere-controls-system     kubectl-admin-c6988866d-ghstw                     1/1     Running   0              34m
kubesphere-monitoring-system   alertmanager-main-0                               2/2     Running   0              38m
kubesphere-monitoring-system   kube-state-metrics-5f77fc8f6d-7pvbz               3/3     Running   0              38m
kubesphere-monitoring-system   node-exporter-7nwsc                               2/2     Running   0              38m
kubesphere-monitoring-system   node-exporter-kf5cj                               2/2     Running   0              38m
kubesphere-monitoring-system   notification-manager-deployment-f86fdf45d-m5gj9   2/2     Running   0              37m
kubesphere-monitoring-system   notification-manager-operator-7b8dcfd75c-bpm6c    2/2     Running   0              37m
kubesphere-monitoring-system   prometheus-k8s-0                                  0/2     Pending   0              38m
kubesphere-monitoring-system   prometheus-operator-845b8fb9df-nxhpd              2/2     Running   0              38m
kubesphere-system              ks-apiserver-756b474857-47jjd                     1/1     Running   0              41m
kubesphere-system              ks-console-876f69ff4-47rgn                        1/1     Running   0              41m
kubesphere-system              ks-controller-manager-64d7d5dc77-95ln2            1/1     Running   0              41m
kubesphere-system              ks-installer-7fc5675448-8wphm                     1/1     Running   0              43m

[root@master kubesphere]# kubectl get svc/ks-console -n kubesphere-system
NAME         TYPE       CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
ks-console   NodePort   10.96.165.196   <none>        80:30880/TCP   43m

4.确保在安全组中打开了 30880 端口，通过 NodePort (IP:30880) 使用默认帐户和密码 (admin/P@88w0rd) 访问 Web 控制台
http://192.168.10.20:30880/login

三、启动插件

# 插件占用资源
https://kubesphere.io/zh/docs/v3.4/pluggable-components/overview/

# 启动日志插件
[root@master kubesphere]# vim cluster-configuration.yaml
logging:
  enabled: true   # false改true

[root@master kubesphere]# kubectl apply -f cluster-configuration.yaml
clusterconfiguration.installer.kubesphere.io/ks-installer configured

[root@master kubesphere]# kubectl get pods --all-namespaces | grep log
kubesphere-logging-system      fluent-bit-77s4z                                  0/1     ContainerCreating   0              31s
kubesphere-logging-system      fluent-bit-b5zlk                                  0/1     ContainerCreating   0              31s
kubesphere-logging-system      fluentbit-operator-67898f4dd8-lxnd5               1/1     Running             0              2m14s
kubesphere-logging-system      opensearch-cluster-data-0                         0/1     Pending             0              2m31s
kubesphere-logging-system      opensearch-cluster-data-1                         0/1     Pending             0              2m30s
kubesphere-logging-system      opensearch-cluster-master-0                       0/1     Pending             0              2m32s