Kubernetes(k8s)-安装k8s(containerd版)

wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
yum install -y containerd.io

#生成全量的配置文件，默认里面几乎没什么配置
containerd config default > /etc/containerd/config.toml

#修改镜像地址
#默认是registry.k8s.io/pause:3.6，我写原始文档的时候才3.8，现在3.10。
sandbox_image = "registry.aliyuncs.com/google_containers/pause:10"

systemctl start containerd && systemctl enable containerd

#配置源
vi /etc/yum.repos.d/kubernetes.repo

[kubernetes]
name=kubernetes
enabled=1
gpgcheck=0
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
#安装必要的软件
yum -y install kubelet kubeadm kubectl

systemctl start kubelet && systemctl enable kubelet

[root@master01 ~]# kubeadm init   --apiserver-advertise-address=192.168.31.213   --image-repository registry.aliyuncs.com/google_containers   --service-cidr=10.10.0.0/16   --pod-network-cidr=172.16.0.0/16   --kubernetes-version v1.28.2   --v=5
I1220 20:45:50.175353   31666 initconfiguration.go:117] detected and using CRI socket: unix:///var/run/containerd/containerd.sock
I1220 20:45:50.175408   31666 kubelet.go:196] the value of KubeletConfiguration.cgroupDriver is empty; setting it to "systemd"
[init] Using Kubernetes version: v1.28.2
[preflight] Running pre-flight checks
I1220 20:45:50.177802   31666 checks.go:563] validating Kubernetes and kubeadm version
I1220 20:45:50.177815   31666 checks.go:168] validating if the firewall is enabled and active
I1220 20:45:50.181463   31666 checks.go:203] validating availability of port 6443
I1220 20:45:50.181530   31666 checks.go:203] validating availability of port 10259
I1220 20:45:50.181540   31666 checks.go:203] validating availability of port 10257
I1220 20:45:50.181549   31666 checks.go:280] validating the existence of file /etc/kubernetes/manifests/kube-apiserver.yaml
I1220 20:45:50.181555   31666 checks.go:280] validating the existence of file /etc/kubernetes/manifests/kube-controller-manager.yaml
I1220 20:45:50.181559   31666 checks.go:280] validating the existence of file /etc/kubernetes/manifests/kube-scheduler.yaml
I1220 20:45:50.181562   31666 checks.go:280] validating the existence of file /etc/kubernetes/manifests/etcd.yaml
I1220 20:45:50.181568   31666 checks.go:430] validating if the connectivity type is via proxy or direct
I1220 20:45:50.181586   31666 checks.go:469] validating http connectivity to first IP address in the CIDR
I1220 20:45:50.181598   31666 checks.go:469] validating http connectivity to first IP address in the CIDR
I1220 20:45:50.181603   31666 checks.go:104] validating the container runtime
I1220 20:45:50.196043   31666 checks.go:639] validating whether swap is enabled or not
I1220 20:45:50.196097   31666 checks.go:370] validating the presence of executable crictl
I1220 20:45:50.196118   31666 checks.go:370] validating the presence of executable conntrack
I1220 20:45:50.196126   31666 checks.go:370] validating the presence of executable ip
I1220 20:45:50.196134   31666 checks.go:370] validating the presence of executable iptables
I1220 20:45:50.196142   31666 checks.go:370] validating the presence of executable mount
I1220 20:45:50.196149   31666 checks.go:370] validating the presence of executable nsenter
I1220 20:45:50.196158   31666 checks.go:370] validating the presence of executable ebtables
I1220 20:45:50.196163   31666 checks.go:370] validating the presence of executable ethtool
I1220 20:45:50.196170   31666 checks.go:370] validating the presence of executable socat
I1220 20:45:50.196176   31666 checks.go:370] validating the presence of executable tc
I1220 20:45:50.196182   31666 checks.go:370] validating the presence of executable touch
I1220 20:45:50.196191   31666 checks.go:516] running all checks
I1220 20:45:50.200409   31666 checks.go:401] checking whether the given node name is valid and reachable using net.LookupHost
I1220 20:45:50.200514   31666 checks.go:605] validating kubelet version
I1220 20:45:50.228325   31666 checks.go:130] validating if the "kubelet" service is enabled and active
I1220 20:45:50.232508   31666 checks.go:203] validating availability of port 10250
I1220 20:45:50.232554   31666 checks.go:329] validating the contents of file /proc/sys/net/bridge/bridge-nf-call-iptables
I1220 20:45:50.232586   31666 checks.go:329] validating the contents of file /proc/sys/net/ipv4/ip_forward
I1220 20:45:50.232596   31666 checks.go:203] validating availability of port 2379
I1220 20:45:50.232606   31666 checks.go:203] validating availability of port 2380
I1220 20:45:50.232616   31666 checks.go:243] validating the existence and emptiness of directory /var/lib/etcd
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
I1220 20:45:50.232703   31666 checks.go:828] using image pull policy: IfNotPresent
I1220 20:45:50.245859   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/kube-apiserver:v1.28.2
I1220 20:45:50.259051   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/kube-controller-manager:v1.28.2
I1220 20:45:50.272114   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/kube-scheduler:v1.28.2
I1220 20:45:50.293045   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/kube-proxy:v1.28.2
W1220 20:45:50.308144   31666 checks.go:835] detected that the sandbox image "registry.aliyuncs.com/google_containers/pause:3.10" of the container runtime is inconsistent with that used by kubeadm. It is recommended that using "registry.aliyuncs.com/google_containers/pause:3.9" as the CRI sandbox image.
I1220 20:45:50.322515   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/pause:3.9
I1220 20:45:50.335660   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/etcd:3.5.9-0
I1220 20:45:50.348960   31666 checks.go:846] image exists: registry.aliyuncs.com/google_containers/coredns:v1.10.1
[certs] Using certificateDir folder "/etc/kubernetes/pki"
I1220 20:45:50.349013   31666 certs.go:112] creating a new certificate authority for ca
[certs] Generating "ca" certificate and key
I1220 20:45:50.509139   31666 certs.go:519] validating certificate period for ca certificate
[certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local master01] and IPs [10.10.0.1 192.168.31.213]
[certs] Generating "apiserver-kubelet-client" certificate and key
I1220 20:45:50.793697   31666 certs.go:112] creating a new certificate authority for front-proxy-ca
[certs] Generating "front-proxy-ca" certificate and key
I1220 20:45:50.853565   31666 certs.go:519] validating certificate period for front-proxy-ca certificate
[certs] Generating "front-proxy-client" certificate and key
I1220 20:45:50.931644   31666 certs.go:112] creating a new certificate authority for etcd-ca
[certs] Generating "etcd/ca" certificate and key
I1220 20:45:51.026435   31666 certs.go:519] validating certificate period for etcd/ca certificate
[certs] Generating "etcd/server" certificate and key
[certs] etcd/server serving cert is signed for DNS names [localhost master01] and IPs [192.168.31.213 127.0.0.1 ::1]
[certs] Generating "etcd/peer" certificate and key
[certs] etcd/peer serving cert is signed for DNS names [localhost master01] and IPs [192.168.31.213 127.0.0.1 ::1]
[certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
I1220 20:45:51.231194   31666 certs.go:78] creating new public/private key files for signing service account users
[certs] Generating "sa" key and public key
[kubeconfig] Using kubeconfig folder "/etc/kubernetes"
I1220 20:45:51.344477   31666 kubeconfig.go:103] creating kubeconfig file for admin.conf
[kubeconfig] Writing "admin.conf" kubeconfig file
I1220 20:45:51.385406   31666 kubeconfig.go:103] creating kubeconfig file for kubelet.conf
[kubeconfig] Writing "kubelet.conf" kubeconfig file
I1220 20:45:51.534822   31666 kubeconfig.go:103] creating kubeconfig file for controller-manager.conf
[kubeconfig] Writing "controller-manager.conf" kubeconfig file
I1220 20:45:51.621462   31666 kubeconfig.go:103] creating kubeconfig file for scheduler.conf
[kubeconfig] Writing "scheduler.conf" kubeconfig file
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
I1220 20:45:51.770394   31666 local.go:65] [etcd] wrote Static Pod manifest for a local etcd member to "/etc/kubernetes/manifests/etcd.yaml"
[control-plane] Using manifest folder "/etc/kubernetes/manifests"
[control-plane] Creating static Pod manifest for "kube-apiserver"
I1220 20:45:51.770412   31666 manifests.go:102] [control-plane] getting StaticPodSpecs
I1220 20:45:51.770507   31666 certs.go:519] validating certificate period for CA certificate
I1220 20:45:51.770537   31666 manifests.go:128] [control-plane] adding volume "ca-certs" for component "kube-apiserver"
I1220 20:45:51.770541   31666 manifests.go:128] [control-plane] adding volume "etc-pki" for component "kube-apiserver"
I1220 20:45:51.770544   31666 manifests.go:128] [control-plane] adding volume "k8s-certs" for component "kube-apiserver"
I1220 20:45:51.770866   31666 manifests.go:157] [control-plane] wrote static Pod manifest for component "kube-apiserver" to "/etc/kubernetes/manifests/kube-apiserver.yaml"
[control-plane] Creating static Pod manifest for "kube-controller-manager"
I1220 20:45:51.770873   31666 manifests.go:102] [control-plane] getting StaticPodSpecs
I1220 20:45:51.770974   31666 manifests.go:128] [control-plane] adding volume "ca-certs" for component "kube-controller-manager"
I1220 20:45:51.770979   31666 manifests.go:128] [control-plane] adding volume "etc-pki" for component "kube-controller-manager"
I1220 20:45:51.770982   31666 manifests.go:128] [control-plane] adding volume "flexvolume-dir" for component "kube-controller-manager"
I1220 20:45:51.770984   31666 manifests.go:128] [control-plane] adding volume "k8s-certs" for component "kube-controller-manager"
I1220 20:45:51.770987   31666 manifests.go:128] [control-plane] adding volume "kubeconfig" for component "kube-controller-manager"
I1220 20:45:51.772037   31666 manifests.go:157] [control-plane] wrote static Pod manifest for component "kube-controller-manager" to "/etc/kubernetes/manifests/kube-controller-manager.yaml"
[control-plane] Creating static Pod manifest for "kube-scheduler"
I1220 20:45:51.772051   31666 manifests.go:102] [control-plane] getting StaticPodSpecs
I1220 20:45:51.772233   31666 manifests.go:128] [control-plane] adding volume "kubeconfig" for component "kube-scheduler"
I1220 20:45:51.772533   31666 manifests.go:157] [control-plane] wrote static Pod manifest for component "kube-scheduler" to "/etc/kubernetes/manifests/kube-scheduler.yaml"
I1220 20:45:51.772545   31666 kubelet.go:67] Stopping the kubelet
[kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env"
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[kubelet-start] Starting the kubelet
I1220 20:45:51.813388   31666 waitcontrolplane.go:83] [wait-control-plane] Waiting for the API server to be healthy
[wait-control-plane] Waiting for the kubelet to boot up the control plane as static Pods from directory "/etc/kubernetes/manifests". This can take up to 4m0s
[apiclient] All control plane components are healthy after 4.001252 seconds
I1220 20:45:55.815724   31666 uploadconfig.go:112] [upload-config] Uploading the kubeadm ClusterConfiguration to a ConfigMap
[upload-config] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace
I1220 20:45:55.827411   31666 uploadconfig.go:126] [upload-config] Uploading the kubelet component config to a ConfigMap
[kubelet] Creating a ConfigMap "kubelet-config" in namespace kube-system with the configuration for the kubelets in the cluster
I1220 20:45:55.835539   31666 uploadconfig.go:131] [upload-config] Preserving the CRISocket information for the control-plane node
I1220 20:45:55.835567   31666 patchnode.go:31] [patchnode] Uploading the CRI Socket information "unix:///var/run/containerd/containerd.sock" to the Node API object "master01" as an annotation
[upload-certs] Skipping phase. Please see --upload-certs
[mark-control-plane] Marking the node master01 as control-plane by adding the labels: [node-role.kubernetes.io/control-plane node.kubernetes.io/exclude-from-external-load-balancers]
[mark-control-plane] Marking the node master01 as control-plane by adding the taints [node-role.kubernetes.io/control-plane:NoSchedule]
[bootstrap-token] Using token: kv1zhw.zppidspgtkmx7oa7
[bootstrap-token] Configuring bootstrap tokens, cluster-info ConfigMap, RBAC Roles
[bootstrap-token] Configured RBAC rules to allow Node Bootstrap tokens to get nodes
[bootstrap-token] Configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
[bootstrap-token] Configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstrap-token] Configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[bootstrap-token] Creating the "cluster-info" ConfigMap in the "kube-public" namespace
I1220 20:45:56.871704   31666 clusterinfo.go:47] [bootstrap-token] loading admin kubeconfig
I1220 20:45:56.871932   31666 clusterinfo.go:58] [bootstrap-token] copying the cluster from admin.conf to the bootstrap kubeconfig
I1220 20:45:56.872029   31666 clusterinfo.go:70] [bootstrap-token] creating/updating ConfigMap in kube-public namespace
I1220 20:45:56.875916   31666 clusterinfo.go:84] creating the RBAC rules for exposing the cluster-info ConfigMap in the kube-public namespace
I1220 20:45:56.881003   31666 kubeletfinalize.go:90] [kubelet-finalize] Assuming that kubelet client certificate rotation is enabled: found "/var/lib/kubelet/pki/kubelet-client-current.pem"
[kubelet-finalize] Updating "/etc/kubernetes/kubelet.conf" to point to a rotatable kubelet client certificate and key
I1220 20:45:56.881444   31666 kubeletfinalize.go:134] [kubelet-finalize] Restarting the kubelet to enable client certificate rotation
[addons] Applied essential addon: CoreDNS
I1220 20:45:57.259468   31666 request.go:629] Waited for 118.243416ms due to client-side throttling, not priority and fairness, request: POST:https://192.168.31.213:6443/apis/rbac.authorization.k8s.io/v1/namespaces/kube-system/rolebindings?timeout=10s
[addons] Applied essential addon: kube-proxy

Your Kubernetes control-plane has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

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

Alternatively, if you are the root user, you can run:

  export KUBECONFIG=/etc/kubernetes/admin.conf

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

Then you can join any number of worker nodes by running the following on each as root:

kubeadm join 192.168.31.213:6443 --token kv1zhw.zppidspgtkmx7oa7 \
	--discovery-token-ca-cert-hash sha256:09e8d758444179d1eff42107578fd8b49c39bc7a36ffa4d74a3bda3d1ad7fc47 

#我这里只是为了写文章，就手工跳过
#这个命令以前将内核模块的时候也讲过
modprobe br_netfilter