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kubesphere 3.0 安装部署填坑记录

flyfish225 2023-03-28 原文

一：系统环境

1.1 系统环境初始化

系统：Centos7.8x64 cat /etc/hosts ----- 192.168.100.11 node01.flyfish.cn 192.168.100.12 node02.flyfish.cn 192.168.100.13 node03.flyfish.cn 192.168.100.14 node04.flyfish.cn 192.168.100.15 node05.flyfish.cn 192.168.100.16 node06.flyfish.cn 192.168.100.17 node07.flyfish.cn 192.168.100.18 node08.flyfish.cn ----- 本次安装以 前三台部署 k8s 部署说明

1.2 系统配置初始化

安装基础工具 yum install -y wget && yum install -y vim && yum install -y lsof && yum install -y net-tools

关闭防火墙或者阿里云开通安全组端口访问 systemctl stop firewalld systemctl disable firewalld 执行关闭命令： systemctl stop firewalld.service 再次执行查看防火墙命令：systemctl status firewalld.service 执行开机禁用防火墙自启命令 ： systemctl disable firewalld.service
关闭 selinux: sed -i 's/enforcing/disabled/' /etc/selinux/config setenforce 0 cat /etc/selinux/config

关闭 swap swapoff -a #临时 sed -ri 's/.*swap.*/#&/' /etc/fstab #永久 free -l -h

将桥接的 IPv4 流量传递到 iptables 的链 如果没有/etc/sysctl.conf文件的话直接执行 echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf echo "net.bridge.bridge-nf-call-ip6tables = 1" >> /etc/sysctl.conf echo "net.bridge.bridge-nf-call-iptables = 1" >> /etc/sysctl.conf echo "net.ipv6.conf.all.disable_ipv6 = 1" >> /etc/sysctl.conf echo "net.ipv6.conf.default.disable_ipv6 = 1" >> /etc/sysctl.conf echo "net.ipv6.conf.lo.disable_ipv6 = 1" >> /etc/sysctl.conf echo "net.ipv6.conf.all.forwarding = 1" >> /etc/sysctl.conf

1.3 部署docker

下载地址：https://download.docker.com/linux/static/stable/x86_64/docker-19.03.9.tgz 以下在所有节点操作。这里采用二进制安装，用yum安装也一样。 在 node01.flyfish,node02.flyfish 与 node03.flyfish 节点上面安装
3.1 解压二进制包 tar zxvf docker-19.03.9.tgz mv docker/* /usr/bin

3.2 systemd管理docker cat > /usr/lib/systemd/system/docker.service << EOF [Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify ExecStart=/usr/bin/dockerd ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target EOF

3.3 创建配置文件 mkdir /etc/docker cat > /etc/docker/daemon.json << EOF { "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"] } EOF registry-mirrors 阿里云镜像加速器 3.4 启动并设置开机启动 systemctl daemon-reload systemctl start docker systemctl enable docker

二 ：安装k8s 集群

安装k8s、kubelet、kubeadm、kubectl（所有节点） 配置K8S的yum源 cat <<EOF > /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64 enabled=1 gpgcheck=0 repo_gpgcheck=0 gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg EOF
安装kubelet、kubeadm、kubectl yum install -y kubelet-1.17.3 kubeadm-1.17.3 kubectl-1.17.3

systemctl enable kubelet && systemctl start kubelet

初始化所有节点: 下载镜像脚本： vim image.sh ---- #!/bin/bash images=( kube-apiserver:v1.17.3 kube-proxy:v1.17.3 kube-controller-manager:v1.17.3 kube-scheduler:v1.17.3 coredns:1.6.5 etcd:3.4.3-0 pause:3.1 ) for imageName in ${images[@]} ; do docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/$imageName done -----

初始化 master节点： 注意，该操作只是在master节点之后构建环境。 kubeadm init \ --apiserver-advertise-address=192.168.100.11 \ --image-repository registry.cn-hangzhou.aliyuncs.com/google_containers \ --kubernetes-version v1.17.3 \ --service-cidr=10.96.0.0/16 \ --pod-network-cidr=10.244.0.0/16

mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config

部署网络插件 kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml

其他节点加入： kubeadm join 192.168.100.11:6443 --token y28jw9.gxstbcar3m4n5p1a \ --discovery-token-ca-cert-hash sha256:769528577607a4024ead671ae01b694744dba16e0806e57ed1b099eb6c6c9350

三：部署NFS 服务器

yum install -y nfs-utils echo "/nfs/data/ *(insecure,rw,sync,no_root_squash)" > /etc/exports

mkdir -p /nfs/data systemctl enable rpcbind systemctl enable nfs-server systemctl start rpcbind systemctl start nfs-server exportfs -r

测试Pod直接挂载NFS了（主节点操作） 在opt目录下创建一个nginx.yaml的文件 vim nginx.yaml ---- apiVersion: v1 kind: Pod metadata: name: vol-nfs namespace: default spec: volumes: - name: html nfs: path: /nfs/data #1000G server: 192.168.100.11 #自己的nfs服务器地址 containers: - name: myapp image: nginx volumeMounts: - name: html mountPath: /usr/share/nginx/html/ ---- kubectl apply -f nginx.yaml cd /nfs/data/ echo " 11111" >>> index.html

安装客户端工具（node节点操作） node02.flyfish.cn showmount -e 192.168.100.11

创建同步文件夹 mkdir /root/nfsmount
将客户端的/root/nfsmount和/nfs/data/做同步（node节点操作） mount -t nfs 192.168.100.11:/nfs/data/ /root/nfsmount

四：设置动态供应链storageclass

vim nfs-rbac.yaml ---- apiVersion: v1 kind: ServiceAccount metadata: name: nfs-provisioner --- kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1 metadata: name: nfs-provisioner-runner rules: - apiGroups: [""] resources: ["persistentvolumes"] verbs: ["get", "list", "watch", "create", "delete"] - apiGroups: [""] resources: ["persistentvolumeclaims"] verbs: ["get", "list", "watch", "update"] - apiGroups: ["storage.k8s.io"] resources: ["storageclasses"] verbs: ["get", "list", "watch"] - apiGroups: [""] resources: ["events"] verbs: ["watch", "create", "update", "patch"] - apiGroups: [""] resources: ["services", "endpoints"] verbs: ["get","create","list", "watch","update"] - apiGroups: ["extensions"] resources: ["podsecuritypolicies"] resourceNames: ["nfs-provisioner"] verbs: ["use"] --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: name: run-nfs-provisioner subjects: - kind: ServiceAccount name: nfs-provisioner namespace: default roleRef: kind: ClusterRole name: nfs-provisioner-runner apiGroup: rbac.authorization.k8s.io --- kind: Deployment apiVersion: apps/v1 metadata: name: nfs-client-provisioner spec: replicas: 1 strategy: type: Recreate selector: matchLabels: app: nfs-client-provisioner template: metadata: labels: app: nfs-client-provisioner spec: serviceAccount: nfs-provisioner containers: - name: nfs-client-provisioner image: lizhenliang/nfs-client-provisioner volumeMounts: - name: nfs-client-root mountPath: /persistentvolumes env: - name: PROVISIONER_NAME value: storage.pri/nfs - name: NFS_SERVER value: 192.168.100.11 - name: NFS_PATH value: /nfs/data volumes: - name: nfs-client-root nfs: server: 192.168.100.11 path: /nfs/data ---- kubectl apply -f nfs-rbac.yaml kubectl get pod

创建storageclass vi storageclass-nfs.yaml ---- apiVersion: storage.k8s.io/v1 kind: StorageClass metadata: name: storage-nfs provisioner: storage.pri/nfs reclaimPolicy: Delete ---- kubectl apply -f storageclass-nfs.yaml

#扩展"reclaim policy"有三种方式：Retain、Recycle、Deleted。 Retain #保护被PVC释放的PV及其上数据，并将PV状态改成"released"，不将被其它PVC绑定。集群管理员手动通过如下步骤释放存储资源： 手动删除PV，但与其相关的后端存储资源如(AWS EBS, GCE PD, Azure Disk, or Cinder volume)仍然存在。 手动清空后端存储volume上的数据。 手动删除后端存储volume，或者重复使用后端volume，为其创建新的PV。 Delete 删除被PVC释放的PV及其后端存储volume。对于动态PV其"reclaim policy"继承自其"storage class"， 默认是Delete。集群管理员负责将"storage class"的"reclaim policy"设置成用户期望的形式，否则需要用 户手动为创建后的动态PV编辑"reclaim policy" Recycle 保留PV，但清空其上数据，已废弃
kubectl get storageclass

改变默认sc https://kubernetes.io/zh/docs/tasks/administer-cluster/change-default-storage-class/#%e4%b8%ba%e4%bb%80%e4%b9%88%e8%a6%81%e6%94%b9%e5%8f%98%e9%bb%98%e8%ae%a4-storage-class kubectl patch storageclass storage-nfs -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'
验证nfs动态供应 创建pvc vim pvc.yaml ----- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: pvc-claim-01 #annotations: # volume.beta.kubernetes.io/storage-class: "storage-nfs" spec: storageClassName: storage-nfs #这个class一定注意要和sc的名字一样 accessModes: - ReadWriteMany resources: requests: storage: 1Mi ----- kubectl apply -f pvc.yaml

使用pvc vi testpod.yaml ---- kind: Pod apiVersion: v1 metadata: name: test-pod spec: containers: - name: test-pod image: busybox command: - "/bin/sh" args: - "-c" - "touch /mnt/SUCCESS && exit 0 || exit 1" volumeMounts: - name: nfs-pvc mountPath: "/mnt" restartPolicy: "Never" volumes: - name: nfs-pvc persistentVolumeClaim: claimName: pvc-claim-01 ----- kubectl apply -f testpod.yaml

五：安装metrics-server

1、先安装metrics-server(yaml如下，已经改好了镜像和配置，可以直接使用)，这样就能监控到pod。node的资源情况（默认只有cpu、memory的资源审计信息哟，更专业的我们后面对接 Prometheus） vim 2222.yaml ---- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: system:aggregated-metrics-reader labels: rbac.authorization.k8s.io/aggregate-to-view: "true" rbac.authorization.k8s.io/aggregate-to-edit: "true" rbac.authorization.k8s.io/aggregate-to-admin: "true" rules: - apiGroups: ["metrics.k8s.io"] resources: ["pods", "nodes"] verbs: ["get", "list", "watch"] --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: metrics-server:system:auth-delegator roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: system:auth-delegator subjects: - kind: ServiceAccount name: metrics-server namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: metrics-server-auth-reader namespace: kube-system roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: extension-apiserver-authentication-reader subjects: - kind: ServiceAccount name: metrics-server namespace: kube-system --- apiVersion: apiregistration.k8s.io/v1beta1 kind: APIService metadata: name: v1beta1.metrics.k8s.io spec: service: name: metrics-server namespace: kube-system group: metrics.k8s.io version: v1beta1 insecureSkipTLSVerify: true groupPriorityMinimum: 100 versionPriority: 100 --- apiVersion: v1 kind: ServiceAccount metadata: name: metrics-server namespace: kube-system --- apiVersion: apps/v1 kind: Deployment metadata: name: metrics-server namespace: kube-system labels: k8s-app: metrics-server spec: selector: matchLabels: k8s-app: metrics-server template: metadata: name: metrics-server labels: k8s-app: metrics-server spec: serviceAccountName: metrics-server volumes: # mount in tmp so we can safely use from-scratch images and/or read-only containers - name: tmp-dir emptyDir: {} containers: - name: metrics-server image: mirrorgooglecontainers/metrics-server-amd64:v0.3.6 imagePullPolicy: IfNotPresent args: - --cert-dir=/tmp - --secure-port=4443 - --kubelet-insecure-tls - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname ports: - name: main-port containerPort: 4443 protocol: TCP securityContext: readOnlyRootFilesystem: true runAsNonRoot: true runAsUser: 1000 volumeMounts: - name: tmp-dir mountPath: /tmp nodeSelector: kubernetes.io/os: linux kubernetes.io/arch: "amd64" --- apiVersion: v1 kind: Service metadata: name: metrics-server namespace: kube-system labels: kubernetes.io/name: "Metrics-server" kubernetes.io/cluster-service: "true" spec: selector: k8s-app: metrics-server ports: - port: 443 protocol: TCP targetPort: main-port --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: system:metrics-server rules: - apiGroups: - "" resources: - pods - nodes - nodes/stats - namespaces - configmaps verbs: - get - list - watch --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: system:metrics-server roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: system:metrics-server subjects: - kind: ServiceAccount name: metrics-server namespace: kube-system --- kubectl apply -f 2222.yaml

kubetl top nodes kubectl top nodes

六： 安装 kubesphere

https://kubesphere.com.cn/docs/quick-start/minimal-kubesphere-on-k8s/ wget https://github.com/kubesphere/ks-installer/releases/download/v3.0.0/kubesphere-installer.yaml wget https://github.com/kubesphere/ks-installer/releases/download/v3.0.0/cluster-configuration.yaml

vim cluster-configuration.yaml ---- apiVersion: installer.kubesphere.io/v1alpha1 kind: ClusterConfiguration metadata: name: ks-installer namespace: kubesphere-system labels: version: v3.0.0 spec: persistence: storageClass: "" # If there is not a default StorageClass in your cluster, you need to specify an existing StorageClass here. authentication: jwtSecret: "" # Keep the jwtSecret consistent with the host cluster. Retrive the jwtSecret by executing "kubectl -n kubesphere-system get cm kubesphere-config -o yaml | grep -v "apiVersion" | grep jwtSecret" on the host cluster. etcd: monitoring: true # Whether to enable etcd monitoring dashboard installation. You have to create a secret for etcd before you enable it. endpointIps: 192.168.100.11 # etcd cluster EndpointIps, it can be a bunch of IPs here. port: 2379 # etcd port tlsEnable: true common: mysqlVolumeSize: 20Gi # MySQL PVC size. minioVolumeSize: 20Gi # Minio PVC size. etcdVolumeSize: 20Gi # etcd PVC size. openldapVolumeSize: 2Gi # openldap PVC size. redisVolumSize: 2Gi # Redis PVC size. es: # Storage backend for logging, events and auditing. # elasticsearchMasterReplicas: 1 # total number of master nodes, it's not allowed to use even number # elasticsearchDataReplicas: 1 # total number of data nodes. elasticsearchMasterVolumeSize: 4Gi # Volume size of Elasticsearch master nodes. elasticsearchDataVolumeSize: 20Gi # Volume size of Elasticsearch data nodes. logMaxAge: 7 # Log retention time in built-in Elasticsearch, it is 7 days by default. elkPrefix: logstash # The string making up index names. The index name will be formatted as ks-<elk_prefix>-log. console: enableMultiLogin: true # enable/disable multiple sing on, it allows an account can be used by different users at the same time. port: 30880 alerting: # (CPU: 0.3 Core, Memory: 300 MiB) Whether to install KubeSphere alerting system. It enables Users to customize alerting policies to send messages to receivers in time with different time intervals and alerting levels to choose from. enabled: true auditing: # Whether to install KubeSphere audit log system. It provides a security-relevant chronological set of records，recording the sequence of activities happened in platform, initiated by different tenants. enabled: true devops: # (CPU: 0.47 Core, Memory: 8.6 G) Whether to install KubeSphere DevOps System. It provides out-of-box CI/CD system based on Jenkins, and automated workflow tools including Source-to-Image & Binary-to-Image. enabled: true jenkinsMemoryLim: 2Gi # Jenkins memory limit. jenkinsMemoryReq: 1500Mi # Jenkins memory request. jenkinsVolumeSize: 8Gi # Jenkins volume size. jenkinsJavaOpts_Xms: 512m # The following three fields are JVM parameters. jenkinsJavaOpts_Xmx: 512m jenkinsJavaOpts_MaxRAM: 2g events: # Whether to install KubeSphere events system. It provides a graphical web console for Kubernetes Events exporting, filtering and alerting in multi-tenant Kubernetes clusters. enabled: true ruler: enabled: true replicas: 2 logging: # (CPU: 57 m, Memory: 2.76 G) Whether to install KubeSphere logging system. Flexible logging functions are provided for log query, collection and management in a unified console. Additional log collectors can be added, such as Elasticsearch, Kafka and Fluentd. enabled: true logsidecarReplicas: 2 metrics_server: # (CPU: 56 m, Memory: 44.35 MiB) Whether to install metrics-server. IT enables HPA (Horizontal Pod Autoscaler). enabled: false monitoring: # prometheusReplicas: 1 # Prometheus replicas are responsible for monitoring different segments of data source and provide high availability as well. prometheusMemoryRequest: 400Mi # Prometheus request memory. prometheusVolumeSize: 20Gi # Prometheus PVC size. # alertmanagerReplicas: 1 # AlertManager Replicas. multicluster: clusterRole: none # host | member | none # You can install a solo cluster, or specify it as the role of host or member cluster. networkpolicy: # Network policies allow network isolation within the same cluster, which means firewalls can be set up between certain instances (Pods). # Make sure that the CNI network plugin used by the cluster supports NetworkPolicy. There are a number of CNI network plugins that support NetworkPolicy, including Calico, Cilium, Kube-router, Romana and Weave Net. enabled: true notification: # Email Notification support for the legacy alerting system, should be enabled/disabled together with the above alerting option. enabled: true openpitrix: # (2 Core, 3.6 G) Whether to install KubeSphere Application Store. It provides an application store for Helm-based applications, and offer application lifecycle management. enabled: true servicemesh: # (0.3 Core, 300 MiB) Whether to install KubeSphere Service Mesh (Istio-based). It provides fine-grained traffic management, observability and tracing, and offer visualization for traffic topology. enabled: true ---- kubectl apply -f kubesphere-installer.yaml kubectl apply -f cluster-configuration1.yaml

查看安装进度： kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f

kubectl get pod -A

kubesphere-monitoring-system prometheus-k8s-0 0/3 ContainerCreating 0 7m20s kubesphere-monitoring-system prometheus-k8s-1 0/3 ContainerCreating 0 7m20s prometheus-k8s-1 这个一直在 ContainerCreating 这个 状态

kubectl describe pod prometheus-k8s-0 -n kubesphere-monitoring-system kube-etcd-client-certs 这个证书没有找到：

kubectl -n kubesphere-monitoring-system create secret generic kube-etcd-client-certs --from-file=etcd-client-ca.crt=/etc/kubernetes/pki/etcd/ca.crt --from-file=etcd-client.crt=/etc/kubernetes/pki/apiserver-etcd-client.crt --from-file=etcd-client.key=/etc/kubernetes/pki/apiserver-etcd-client.key kubectl get secret -A |grep etcd

kubectl get pod -n kubesphere-monitoring-system prometheus-k8s-1 这个pod 就变成Running 状态了

下面根据日志提示打开kubesphere 的web 页面：

kubesphere3.0codequotimagedockerk8skubesphere虚拟化云计算

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