I use kubeadm to install kubernetes cluster.
when I run the command kubeadm init, it failed with [kubelet-check] Initial timeout of 40s passed.
Here comes the detail
$ sudo kubeadm init --apiserver-advertise-address=10.112.55.6 --pod-network-cidr=172.16.0.0/16
--image-repository registry.cn-hangzhou.aliyuncs.com/google_containers --v=6
# I1225 17:21:32.199300 12963 initconfiguration.go:104] detected and using CRI socket: /var/run/dockershim.sock
I1225 17:21:32.435079 12963 version.go:182] fetching Kubernetes version from URL: https://dl.k8s.io/release/stable-1.txt
[init] Using Kubernetes version: v1.20.1
[preflight] Running pre-flight checks
I1225 17:21:33.162619 12963 checks.go:577] validating Kubernetes and kubeadm version
I1225 17:21:33.162846 12963 checks.go:166] validating if the firewall is enabled and active
I1225 17:21:33.185708 12963 checks.go:201] validating availability of port 6443
I1225 17:21:33.186242 12963 checks.go:201] validating availability of port 10259
I1225 17:21:33.186464 12963 checks.go:201] validating availability of port 10257
I1225 17:21:33.186618 12963 checks.go:286] validating the existence of file /etc/kubernetes/manifests/kube-apiserver.yaml
I1225 17:21:33.186835 12963 checks.go:286] validating the existence of file /etc/kubernetes/manifests/kube-controller-manager.yaml
I1225 17:21:33.186958 12963 checks.go:286] validating the existence of file /etc/kubernetes/manifests/kube-scheduler.yaml
I1225 17:21:33.187059 12963 checks.go:286] validating the existence of file /etc/kubernetes/manifests/etcd.yaml
I1225 17:21:33.187164 12963 checks.go:432] validating if the connectivity type is via proxy or direct
I1225 17:21:33.187301 12963 checks.go:471] validating http connectivity to first IP address in the CIDR
I1225 17:21:33.187470 12963 checks.go:471] validating http connectivity to first IP address in the CIDR
I1225 17:21:33.187564 12963 checks.go:102] validating the container runtime
I1225 17:21:33.475186 12963 checks.go:128] validating if the "docker" service is enabled and active
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kuber netes.io/docs/setup/cri/
I1225 17:21:33.713959 12963 checks.go:335] validating the contents of file /proc/sys/net/bridge/bridge-nf-call-iptables
I1225 17:21:33.714071 12963 checks.go:335] validating the contents of file /proc/sys/net/ipv4/ip_forward
I1225 17:21:33.714126 12963 checks.go:649] validating whether swap is enabled or not
I1225 17:21:33.714214 12963 checks.go:376] validating the presence of executable conntrack
I1225 17:21:33.714280 12963 checks.go:376] validating the presence of executable ip
I1225 17:21:33.714336 12963 checks.go:376] validating the presence of executable iptables
I1225 17:21:33.714377 12963 checks.go:376] validating the presence of executable mount
I1225 17:21:33.714424 12963 checks.go:376] validating the presence of executable nsenter
I1225 17:21:33.714465 12963 checks.go:376] validating the presence of executable ebtables
I1225 17:21:33.714504 12963 checks.go:376] validating the presence of executable ethtool
I1225 17:21:33.714546 12963 checks.go:376] validating the presence of executable socat
I1225 17:21:33.714584 12963 checks.go:376] validating the presence of executable tc
I1225 17:21:33.714623 12963 checks.go:376] validating the presence of executable touch
I1225 17:21:33.714665 12963 checks.go:520] running all checks
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.1. Latest validated version: 19.03
I1225 17:21:33.987177 12963 checks.go:406] checking whether the given node name is reachable using net.LookupHost
I1225 17:21:33.987218 12963 checks.go:618] validating kubelet version
I1225 17:21:34.159634 12963 checks.go:128] validating if the "kubelet" service is enabled and active
I1225 17:21:34.198220 12963 checks.go:201] validating availability of port 10250
I1225 17:21:34.198371 12963 checks.go:201] validating availability of port 2379
I1225 17:21:34.198420 12963 checks.go:201] validating availability of port 2380
I1225 17:21:34.198472 12963 checks.go:249] 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'
I1225 17:21:34.291094 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.20.1
I1225 17:21:34.399945 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.20.1
I1225 17:21:34.500275 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.20.1
I1225 17:21:34.598838 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.20.1
I1225 17:21:34.694850 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.2
I1225 17:21:34.793574 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.4.13-0
I1225 17:21:34.886867 12963 checks.go:839] image exists: registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.7.0
[certs] Using certificateDir folder "/etc/kubernetes/pki"
I1225 17:21:34.887041 12963 certs.go:110] creating a new certificate authority for ca
[certs] Generating "ca" certificate and key
I1225 17:21:36.654618 12963 certs.go:474] 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 master-node] and IPs [10.96.0.1 10.112.55.6]
[certs] Generating "apiserver-kubelet-client" certificate and key
I1225 17:21:37.381231 12963 certs.go:110] creating a new certificate authority for front-proxy-ca
[certs] Generating "front-proxy-ca" certificate and key
I1225 17:21:37.693587 12963 certs.go:474] validating certificate period for front-proxy-ca certificate
[certs] Generating "front-proxy-client" certificate and key
I1225 17:21:38.087981 12963 certs.go:110] creating a new certificate authority for etcd-ca
[certs] Generating "etcd/ca" certificate and key
I1225 17:21:38.535640 12963 certs.go:474] 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 master-node] and IPs [10.112.55.6 127.0.0.1 ::1]
[certs] Generating "etcd/peer" certificate and key
[certs] etcd/peer serving cert is signed for DNS names [localhost master-node] and IPs [10.112.55.6 127.0.0.1 ::1]
[certs] Generating "etcd/healthcheck-client" certificate and key
[certs] Generating "apiserver-etcd-client" certificate and key
I1225 17:21:40.814660 12963 certs.go:76] creating new public/private key files for signing service account users
[certs] Generating "sa" key and public key
[kubeconfig] Using kubeconfig folder "/etc/kubernetes"
I1225 17:21:41.064910 12963 kubeconfig.go:101] creating kubeconfig file for admin.conf
[kubeconfig] Writing "admin.conf" kubeconfig file
I1225 17:21:41.610653 12963 kubeconfig.go:101] creating kubeconfig file for kubelet.conf
[kubeconfig] Writing "kubelet.conf" kubeconfig file
I1225 17:21:41.972640 12963 kubeconfig.go:101] creating kubeconfig file for controller-manager.conf
[kubeconfig] Writing "controller-manager.conf" kubeconfig file
I1225 17:21:42.483821 12963 kubeconfig.go:101] creating kubeconfig file for scheduler.conf
[kubeconfig] Writing "scheduler.conf" kubeconfig file
I1225 17:21:42.862547 12963 kubelet.go:63] 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
[control-plane] Using manifest folder "/etc/kubernetes/manifests"
[control-plane] Creating static Pod manifest for "kube-apiserver"
I1225 17:21:43.228775 12963 manifests.go:96] [control-plane] getting StaticPodSpecs
I1225 17:21:43.229478 12963 certs.go:474] validating certificate period for CA certificate
I1225 17:21:43.229734 12963 manifests.go:109] [control-plane] adding volume "ca-certs" for component "kube-apiserver"
I1225 17:21:43.229778 12963 manifests.go:109] [control-plane] adding volume "etc-ca-certificates" for component "kube-apiserver"
I1225 17:21:43.229805 12963 manifests.go:109] [control-plane] adding volume "etc-pki" for component "kube-apiserver"
I1225 17:21:43.229829 12963 manifests.go:109] [control-plane] adding volume "k8s-certs" for component "kube-apiserver"
I1225 17:21:43.229856 12963 manifests.go:109] [control-plane] adding volume "usr-local-share-ca-certificates" for component "kube-apiserver"
I1225 17:21:43.229887 12963 manifests.go:109] [control-plane] adding volume "usr-share-ca-certificates" for component "kube-apiserver"
I1225 17:21:43.266156 12963 manifests.go:126] [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"
I1225 17:21:43.266285 12963 manifests.go:96] [control-plane] getting StaticPodSpecs
I1225 17:21:43.266934 12963 manifests.go:109] [control-plane] adding volume "ca-certs" for component "kube-controller-manager"
I1225 17:21:43.266970 12963 manifests.go:109] [control-plane] adding volume "etc-ca-certificates" for component "kube-controller-manager"
I1225 17:21:43.266990 12963 manifests.go:109] [control-plane] adding volume "etc-pki" for component "kube-controller-manager"
I1225 17:21:43.267009 12963 manifests.go:109] [control-plane] adding volume "flexvolume-dir" for component "kube-controller-manager"
I1225 17:21:43.267027 12963 manifests.go:109] [control-plane] adding volume "k8s-certs" for component "kube-controller-manager"
I1225 17:21:43.267045 12963 manifests.go:109] [control-plane] adding volume "kubeconfig" for component "kube-controller-manager"
I1225 17:21:43.267064 12963 manifests.go:109] [control-plane] adding volume "usr-local-share-ca-certificates" for component "kube-controller-manager"
I1225 17:21:43.267083 12963 manifests.go:109] [control-plane] adding volume "usr-share-ca-certificates" for component "kube-controller-manager"
I1225 17:21:43.273446 12963 manifests.go:126] [control-plane] wrote static Pod manifest for component "kube-controller-manager" to "/etc/kubernetes/manifests/kube-c ontroller-manager.yaml"
[control-plane] Creating static Pod manifest for "kube-scheduler"
I1225 17:21:43.273524 12963 manifests.go:96] [control-plane] getting StaticPodSpecs
I1225 17:21:43.274170 12963 manifests.go:109] [control-plane] adding volume "kubeconfig" for component "kube-scheduler"
I1225 17:21:43.275516 12963 manifests.go:126] [control-plane] wrote static Pod manifest for component "kube-scheduler" to "/etc/kubernetes/manifests/kube-scheduler.yaml"
[etcd] Creating static Pod manifest for local etcd in "/etc/kubernetes/manifests"
I1225 17:21:43.280540 12963 local.go:74] [etcd] wrote Static Pod manifest for a local etcd member to "/etc/kubernetes/manifests/etcd.yaml"
I1225 17:21:43.280656 12963 waitcontrolplane.go:87] [wait-control-plane] Waiting for the API server to be healthy
I1225 17:21:43.283314 12963 loader.go:379] Config loaded from file: /etc/kubernetes/admin.conf
[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
I1225 17:21:43.286511 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:43.787523 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:44.287257 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:44.787238 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:45.287847 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:45.787793 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:46.287736 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:21:46.787863 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
.......
I1225 17:22:20.787816 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:21.287825 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:21.787458 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:22.287273 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:22.787383 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
[kubelet-check] Initial timeout of 40s passed.
I1225 17:22:23.287900 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:23.787358 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:24.287797 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:24.787828 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:25.288330 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:22:25.788017 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
.......
I1225 17:25:40.287320 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:40.787783 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:41.287783 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:41.787836 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:42.287748 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:42.787906 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:43.287794 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
I1225 17:25:43.288576 12963 round_trippers.go:445] GET https://10.112.55.6:6443/healthz?timeout=10s in 0 milliseconds
Unfortunately, an error has occurred:
timed out waiting for the condition
This error is likely caused by:
- The kubelet is not running
- The kubelet is unhealthy due to a misconfiguration of the node in some way (required cgroups disabled)
If you are on a systemd-powered system, you can try to troubleshoot the error with the following commands:
- 'systemctl status kubelet'
- 'journalctl -xeu kubelet'
Additionally, a control plane component may have crashed or exited when started by the container runtime.
To troubleshoot, list all containers using your preferred container runtimes CLI.
Here is one example how you may list all Kubernetes containers running in docker:
- 'docker ps -a | grep kube | grep -v pause'
Once you have found the failing container, you can inspect its logs with:
- 'docker logs CONTAINERID'
couldn't initialize a Kubernetes cluster
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/init.runWaitControlPlanePhase
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/init/waitcontrolplane.go:114
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow.(*Runner).Run.func1
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow/runner.go:234
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow.(*Runner).visitAll
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow/runner.go:421
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow.(*Runner).Run
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow/runner.go:207
k8s.io/kubernetes/cmd/kubeadm/app/cmd.newCmdInit.func1
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/init.go:151
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).execute
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:850
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).ExecuteC
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:958
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).Execute
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:895
k8s.io/kubernetes/cmd/kubeadm/app.Run
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/kubeadm.go:50
main.main
_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/kubeadm.go:25
runtime.main
/usr/local/go/src/runtime/proc.go:204
runtime.goexit
/usr/local/go/src/runtime/asm_amd64.s:1374
error execution phase wait-control-plane
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow.(*Runner).Run.func1
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow/runner.go:235
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow.(*Runner).visitAll
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow/runner.go:421
k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow.(*Runner).Run
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow/runner.go:207
k8s.io/kubernetes/cmd/kubeadm/app/cmd.newCmdInit.func1
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/cmd/init.go:151
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).execute
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:850
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).ExecuteC
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:958
k8s.io/kubernetes/vendor/github.com/spf13/cobra.(*Command).Execute
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/vendor/github.com/spf13/cobra/command.go:895
k8s.io/kubernetes/cmd/kubeadm/app.Run
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/app/kubeadm.go:50
main.main
_output/dockerized/go/src/k8s.io/kubernetes/cmd/kubeadm/kubeadm.go:25
runtime.main
/usr/local/go/src/runtime/proc.go:204
runtime.goexit
/usr/local/go/src/runtime/asm_amd64.s:1374
And this is the kubelet status
kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/lib/systemd/system/kubelet.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2020-12-25 17:21:43 CST; 8min ago
Docs: https://kubernetes.io/docs/home/
Main PID: 13178 (kubelet)
Tasks: 14 (limit: 4915)
CGroup: /system.slice/kubelet.service
└─13178 /usr/bin/kubelet --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml
Dec 25 17:30:27 master-node kubelet[13178]: E1225 17:30:27.463303 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:27 master-node kubelet[13178]: E1225 17:30:27.563495 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:27 master-node kubelet[13178]: E1225 17:30:27.663710 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:27 master-node kubelet[13178]: E1225 17:30:27.764033 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:27 master-node kubelet[13178]: E1225 17:30:27.864314 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:27 master-node kubelet[13178]: E1225 17:30:27.964531 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:28 master-node kubelet[13178]: E1225 17:30:28.064708 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:28 master-node kubelet[13178]: E1225 17:30:28.082499 13178 controller.go:144] failed to ensure lease exists, will retry in 7s, error: Get "https://10.112.55.6:6443/apis/coordination.k8s.io/v1/namespaces/kube-node-lease/leases/master-node?timeout=10s": dial tcp 10.112.55.6:6443: connect: connection refused
Dec 25 17:30:28 master-node kubelet[13178]: E1225 17:30:28.164942 13178 kubelet.go:2240] node "master-node" not found
Dec 25 17:30:28 master-node kubelet[13178]: E1225 17:30:28.265594 13178 kubelet.go:2240] node "master-node" not found
All the info show that it can’t connect to https://10.112.55.6:6443. But 10.112.55.6 is the localhost ip, so I’m very confused.
Who can help me? Thanks very much.
Besides, i have turned off the swap and firewalld.
$ free -m
# total used free shared buff/cache available
# Mem: 5819 829 1549 5 3440 4711
# Swap: 0 0 0
$ sudo ufw status
# Status: inactive
Cluster information:
Kubernetes version:
$ kubelet --version
# Kubernetes v1.20.1
Cloud being used: bare-metal
Installation method: kubeadm
Host OS:
$ uname -a
# Linux master-node 5.4.0-59-generic #65~18.04.1-Ubuntu SMP Mon Dec 14 15:59:40 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
