4月 022021
 

1 Control Plane + etcd
3 Worker

创建配置文件

[root@localhost ~]# rke config --name cluster.yml
[+] Cluster Level SSH Private Key Path [~/.ssh/id_rsa]: 
[+] Number of Hosts [1]: 4
[+] SSH Address of host (1) [none]: 192.168.3.201
[+] SSH Port of host (1) [22]: 
[+] SSH Private Key Path of host (192.168.3.201) [none]: ~/.ssh/id_rsa
[+] SSH User of host (192.168.3.201) [ubuntu]: deployer
[+] Is host (192.168.3.201) a Control Plane host (y/n)? [y]: y
[+] Is host (192.168.3.201) a Worker host (y/n)? [n]: n
[+] Is host (192.168.3.201) an etcd host (y/n)? [n]: y
[+] Override Hostname of host (192.168.3.201) [none]: k8s-cluster01-01
[+] Internal IP of host (192.168.3.201) [none]: 
[+] Docker socket path on host (192.168.3.201) [/var/run/docker.sock]: 
[+] SSH Address of host (2) [none]: 192.168.3.202
[+] SSH Port of host (2) [22]: 
[+] SSH Private Key Path of host (192.168.3.202) [none]: ~/.ssh/id_rsa
[+] SSH User of host (192.168.3.202) [ubuntu]: deployer
[+] Is host (192.168.3.202) a Control Plane host (y/n)? [y]: n
[+] Is host (192.168.3.202) a Worker host (y/n)? [n]: y
[+] Is host (192.168.3.202) an etcd host (y/n)? [n]: n
[+] Override Hostname of host (192.168.3.202) [none]: k8s-cluster01-02
[+] Internal IP of host (192.168.3.202) [none]: 
[+] Docker socket path on host (192.168.3.202) [/var/run/docker.sock]: 
[+] SSH Address of host (3) [none]: 192.168.3.203
[+] SSH Port of host (3) [22]: 
[+] SSH Private Key Path of host (192.168.3.203) [none]: ~/.ssh/id_rsa
[+] SSH User of host (192.168.3.203) [ubuntu]: deployer
[+] Is host (192.168.3.203) a Control Plane host (y/n)? [y]: n
[+] Is host (192.168.3.203) a Worker host (y/n)? [n]: y
[+] Is host (192.168.3.203) an etcd host (y/n)? [n]: n
[+] Override Hostname of host (192.168.3.203) [none]: k8s-cluster01-03
[+] Internal IP of host (192.168.3.203) [none]: 
[+] Docker socket path on host (192.168.3.203) [/var/run/docker.sock]: 
[+] SSH Address of host (4) [none]: 192.168.3.204
[+] SSH Port of host (4) [22]: 
[+] SSH Private Key Path of host (192.168.3.204) [none]: ~/.ssh/id_rsa
[+] SSH User of host (192.168.3.204) [ubuntu]: deployer
[+] Is host (192.168.3.204) a Control Plane host (y/n)? [y]: n
[+] Is host (192.168.3.204) a Worker host (y/n)? [n]: y
[+] Is host (192.168.3.204) an etcd host (y/n)? [n]: n
[+] Override Hostname of host (192.168.3.204) [none]: k8s-cluster01-04
[+] Internal IP of host (192.168.3.204) [none]: 
[+] Docker socket path on host (192.168.3.204) [/var/run/docker.sock]: 
[+] Network Plugin Type (flannel, calico, weave, canal, aci) [canal]: flannel
[+] Authentication Strategy [x509]: 
[+] Authorization Mode (rbac, none) [rbac]: 
[+] Kubernetes Docker image [rancher/hyperkube:v1.20.5-rancher1]: rancher/hyperkube:v1.19.9-rancher1
[+] Cluster domain [cluster.local]: 
[+] Service Cluster IP Range [10.43.0.0/16]: 
[+] Enable PodSecurityPolicy [n]: 
[+] Cluster Network CIDR [10.42.0.0/16]: 
[+] Cluster DNS Service IP [10.43.0.10]: 
[+] Add addon manifest URLs or YAML files [no]: 
[root@localhost ~]#

Rancher Kubernetes Docker image版本可选参数

https://github.com/rancher/rke/releases

New Images in v1.20.5-rancher1-1, v1.19.9-rancher1-1 and v1.18.16-rancher1-1
Updated Hyperkube Image based on k8s versions

rancher/hyperkube:v1.20.5-rancher1
rancher/hyperkube:v1.19.9-rancher1
rancher/hyperkube:v1.18.17-rancher1

配置文件

[root@localhost ~]# cat cluster.yml
# If you intened to deploy Kubernetes in an air-gapped environment,
# please consult the documentation on how to configure custom RKE images.
nodes:
- address: 192.168.3.201
  port: "22"
  internal_address: ""
  role:
  - controlplane
  - etcd
  hostname_override: k8s-cluster01-01
  user: deployer
  docker_socket: /var/run/docker.sock
  ssh_key: ""
  ssh_key_path: ~/.ssh/id_rsa
  ssh_cert: ""
  ssh_cert_path: ""
  labels: {}
  taints: []
- address: 192.168.3.202
  port: "22"
  internal_address: ""
  role:
  - worker
  hostname_override: k8s-cluster01-02
  user: deployer
  docker_socket: /var/run/docker.sock
  ssh_key: ""
  ssh_key_path: ~/.ssh/id_rsa
  ssh_cert: ""
  ssh_cert_path: ""
  labels: {}
  taints: []
- address: 192.168.3.203
  port: "22"
  internal_address: ""
  role:
  - worker
  hostname_override: k8s-cluster01-03
  user: deployer
  docker_socket: /var/run/docker.sock
  ssh_key: ""
  ssh_key_path: ~/.ssh/id_rsa
  ssh_cert: ""
  ssh_cert_path: ""
  labels: {}
  taints: []
- address: 192.168.3.204
  port: "22"
  internal_address: ""
  role:
  - worker
  hostname_override: k8s-cluster01-04
  user: deployer
  docker_socket: /var/run/docker.sock
  ssh_key: ""
  ssh_key_path: ~/.ssh/id_rsa
  ssh_cert: ""
  ssh_cert_path: ""
  labels: {}
  taints: []
services:
  etcd:
    image: ""
    extra_args: {}
    extra_binds: []
    extra_env: []
    win_extra_args: {}
    win_extra_binds: []
    win_extra_env: []
    external_urls: []
    ca_cert: ""
    cert: ""
    key: ""
    path: ""
    uid: 0
    gid: 0
    snapshot: null
    retention: ""
    creation: ""
    backup_config: null
  kube-api:
    image: ""
    extra_args: {}
    extra_binds: []
    extra_env: []
    win_extra_args: {}
    win_extra_binds: []
    win_extra_env: []
    service_cluster_ip_range: 10.43.0.0/16
    service_node_port_range: ""
    pod_security_policy: false
    always_pull_images: false
    secrets_encryption_config: null
    audit_log: null
    admission_configuration: null
    event_rate_limit: null
  kube-controller:
    image: ""
    extra_args: {}
    extra_binds: []
    extra_env: []
    win_extra_args: {}
    win_extra_binds: []
    win_extra_env: []
    cluster_cidr: 10.42.0.0/16
    service_cluster_ip_range: 10.43.0.0/16
  scheduler:
    image: ""
    extra_args: {}
    extra_binds: []
    extra_env: []
    win_extra_args: {}
    win_extra_binds: []
    win_extra_env: []
  kubelet:
    image: ""
    extra_args: {}
    extra_binds: []
    extra_env: []
    win_extra_args: {}
    win_extra_binds: []
    win_extra_env: []
    cluster_domain: cluster.local
    infra_container_image: ""
    cluster_dns_server: 10.43.0.10
    fail_swap_on: false
    generate_serving_certificate: false
  kubeproxy:
    image: ""
    extra_args: {}
    extra_binds: []
    extra_env: []
    win_extra_args: {}
    win_extra_binds: []
    win_extra_env: []
network:
  plugin: flannel
  options: {}
  mtu: 0
  node_selector: {}
  update_strategy: null
  tolerations: []
authentication:
  strategy: x509
  sans: []
  webhook: null
addons: ""
addons_include: []
system_images:
  etcd: rancher/coreos-etcd:v3.4.14-rancher1
  alpine: rancher/rke-tools:v0.1.72
  nginx_proxy: rancher/rke-tools:v0.1.72
  cert_downloader: rancher/rke-tools:v0.1.72
  kubernetes_services_sidecar: rancher/rke-tools:v0.1.72
  kubedns: rancher/k8s-dns-kube-dns:1.15.10
  dnsmasq: rancher/k8s-dns-dnsmasq-nanny:1.15.10
  kubedns_sidecar: rancher/k8s-dns-sidecar:1.15.10
  kubedns_autoscaler: rancher/cluster-proportional-autoscaler:1.8.1
  coredns: rancher/coredns-coredns:1.8.0
  coredns_autoscaler: rancher/cluster-proportional-autoscaler:1.8.1
  nodelocal: rancher/k8s-dns-node-cache:1.15.13
  kubernetes: rancher/hyperkube:v1.19.9-rancher1
  flannel: rancher/coreos-flannel:v0.13.0-rancher1
  flannel_cni: rancher/flannel-cni:v0.3.0-rancher6
  calico_node: rancher/calico-node:v3.17.2
  calico_cni: rancher/calico-cni:v3.17.2
  calico_controllers: rancher/calico-kube-controllers:v3.17.2
  calico_ctl: rancher/calico-ctl:v3.17.2
  calico_flexvol: rancher/calico-pod2daemon-flexvol:v3.17.2
  canal_node: rancher/calico-node:v3.17.2
  canal_cni: rancher/calico-cni:v3.17.2
  canal_controllers: rancher/calico-kube-controllers:v3.17.2
  canal_flannel: rancher/coreos-flannel:v0.13.0-rancher1
  canal_flexvol: rancher/calico-pod2daemon-flexvol:v3.17.2
  weave_node: weaveworks/weave-kube:2.8.1
  weave_cni: weaveworks/weave-npc:2.8.1
  pod_infra_container: rancher/pause:3.2
  ingress: rancher/nginx-ingress-controller:nginx-0.43.0-rancher1
  ingress_backend: rancher/nginx-ingress-controller-defaultbackend:1.5-rancher1
  metrics_server: rancher/metrics-server:v0.4.1
  windows_pod_infra_container: rancher/kubelet-pause:v0.1.6
  aci_cni_deploy_container: noiro/cnideploy:5.1.1.0.1ae238a
  aci_host_container: noiro/aci-containers-host:5.1.1.0.1ae238a
  aci_opflex_container: noiro/opflex:5.1.1.0.1ae238a
  aci_mcast_container: noiro/opflex:5.1.1.0.1ae238a
  aci_ovs_container: noiro/openvswitch:5.1.1.0.1ae238a
  aci_controller_container: noiro/aci-containers-controller:5.1.1.0.1ae238a
  aci_gbp_server_container: noiro/gbp-server:5.1.1.0.1ae238a
  aci_opflex_server_container: noiro/opflex-server:5.1.1.0.1ae238a
ssh_key_path: ~/.ssh/id_rsa
ssh_cert_path: ""
ssh_agent_auth: false
authorization:
  mode: rbac
  options: {}
ignore_docker_version: null
kubernetes_version: ""
private_registries: []
ingress:
  provider: ""
  options: {}
  node_selector: {}
  extra_args: {}
  dns_policy: ""
  extra_envs: []
  extra_volumes: []
  extra_volume_mounts: []
  update_strategy: null
  http_port: 0
  https_port: 0
  network_mode: ""
  tolerations: []
  default_backend: null
  default_http_backend_priority_class_name: ""
  nginx_ingress_controller_priority_class_name: ""
cluster_name: ""
cloud_provider:
  name: ""
prefix_path: ""
win_prefix_path: ""
addon_job_timeout: 0
bastion_host:
  address: ""
  port: ""
  user: ""
  ssh_key: ""
  ssh_key_path: ""
  ssh_cert: ""
  ssh_cert_path: ""
monitoring:
  provider: ""
  options: {}
  node_selector: {}
  update_strategy: null
  replicas: null
  tolerations: []
  metrics_server_priority_class_name: ""
restore:
  restore: false
  snapshot_name: ""
rotate_encryption_key: false
dns: null
[root@localhost ~]#

下载安装最新版本或指定版本(二进制Kubernetes组件)

https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/
https://github.com/kubernetes/kubernetes/tree/master/CHANGELOG
https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.19.md

查看Kubectl版本信息及节点信息

[root@localhost ~]# kubectl version --client
Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.9", GitCommit:"9dd794e454ac32d97cde41ae10be801ae98f75df", GitTreeState:"clean", BuildDate:"2021-03-18T01:09:28Z", GoVersion:"go1.15.8", Compiler:"gc", Platform:"linux/amd64"}
[root@localhost ~]# kubectl --kubeconfig kube_config_cluster.yml get nodes -o wide
NAME               STATUS   ROLES               AGE   VERSION   INTERNAL-IP     EXTERNAL-IP   OS-IMAGE         KERNEL-VERSION          CONTAINER-RUNTIME
k8s-cluster01-01   Ready    controlplane,etcd   33m   v1.19.9   192.168.3.201   <none>        CentOS Linux 8   4.18.0-240.el8.x86_64   docker://19.3.15
k8s-cluster01-02   Ready    worker              33m   v1.19.9   192.168.3.202   <none>        CentOS Linux 8   4.18.0-240.el8.x86_64   docker://19.3.15
k8s-cluster01-03   Ready    worker              32m   v1.19.9   192.168.3.203   <none>        CentOS Linux 8   4.18.0-240.el8.x86_64   docker://19.3.15
k8s-cluster01-04   Ready    worker              33m   v1.19.9   192.168.3.204   <none>        CentOS Linux 8   4.18.0-240.el8.x86_64   docker://19.3.15
[root@localhost ~]#