使用kubeode一键部署k8s后，我想知道k8s是否安装成功了，怎么办呢？这时候就需要使用kubectl命令了。
1、使用kubectlgetnodes检查k8s是否安装成功
kubectlgetnodes
上述结果中，status字段非常重要，直接显示了node的状态，必须是ready才是成功的标志。
官方网站解释如下：
节点状况
描述
Ready
如节点是健康的并已经准备好接收Pod则为True；False表示节点不健康而且不能接收Pod；Unknown表示节点控制器在最近node-monitor-grace-period期间（默认40秒）没有收到节点的消息
DiskPressure
True表示节点存在磁盘空间压力，即磁盘可用量低,否则为False
MemoryPressure
True表示节点存在内存压力，即节点内存可用量低，否则为False
PIDPressure
True表示节点存在进程压力，即节点上进程过多；否则为False
NetworkUnavailable
True表示节点网络配置不正确；否则为False
2、增加-owide参数检查nodes的ip
kubectlgetnodes-owide
-owide
以纯文本格式输出，包含所有附加信息。对于Pod包含节点名。
3、简略形式
kubectlgetnodes-oname
4、API查询形式，可以查到比较丰富的信息
kubectlgetnodes-oyaml
[root@node01~]#kubectlgetnodes-oyamlapiVersion:v1items:-apiVersion:v1kind:Nodemetadata:annotations:/ttl:"0"/controller-managed-attach-detach:"true"creationTimestamp:"2023-06-03T06:04:53Z"labels:/arch:/os:/arch:/hostname:/os:/node:""name:node01resourceVersion:"4166369"uid:26453d8f-02f9-4a83-ab92-a150dfe737d4spec:podCIDR:100.64.1.0/24podCIDRs:-100.64.1.0/24status:addresses:-address:192.168.235.139type:InternalIP-address:node01type:Hostnameallocatable:cpu:"32"ephemeral-storage:"483173420666"hugepages-1Gi:"0"hugepages-2Mi:"0"memory:131757996Kipods:"110"capacity:cpu:"32"ephemeral-storage:524276716Kihugepages-1Gi:"0"hugepages-2Mi:"0"memory:131860396Kipods:"110"conditions:-lastHeartbeatTime:"2023-06-03T06:05:29Z"lastTransitionTime:"2023-06-03T06:05:29Z"message:Calicoisrunningonthisnodereason:CalicoIsUpstatus:"False"type:NetworkUnavailable-lastHeartbeatTime:"2023-07-05T09:32:29Z"lastTransitionTime:"2023-06-03T06:04:53Z"message:kubelethassufficientmemoryavailablereason:KubeletHasSufficientMemorystatus:"False"type:MemoryPressure-lastHeartbeatTime:"2023-07-05T09:32:29Z"lastTransitionTime:"2023-06-03T06:04:53Z"message:kubelethasnodiskpressurereason:KubeletHasNoDiskPressurestatus:"False"type:DiskPressure-lastHeartbeatTime:"2023-07-05T09:32:29Z"lastTransitionTime:"2023-06-03T06:04:53Z"message:kubelethassufficientPIDavailablereason:KubeletHasSufficientPIDstatus:"False"type:PIDPressure-lastHeartbeatTime:"2023-07-05T09:32:29Z"lastTransitionTime:"2023-06-03T06:05:34Z"message:kubeletispostingreadystatusreason:KubeletReadystatus:"True"type:Readydaemonpoints:kubeletpoint:Port:10250images:-names:-mysql@sha256:f57eef421000aaf8332a91ab0b6c96b3c83ed2a981c29e6528b21ce10197cd16-mysql:5.7sizeBytes:568629848-names:-calico/node::437164545-names:-kubeguide/tomcat-app@sha256:7a9193c2e5c6c74b4ad49a8abbf75373d4ab76c8f8db87672dc526b96ac69ac4-kubeguide/tomcat-app:v1sizeBytes:358241257-names:-portainer/agent@sha256:2c1abfac4937923e625be5f63a15f49a19cc4cca247c50f8746a9222023865a3-portainer/agent:2.16.2sizeBytes:165665328-names:-calico/cni::108767177-names:-calico/kube-controllers::52865826-names:-coredns/coredns:1.9.3sizeBytes:48803555-names:-calico/pod2daemon-flexvol::21894737-names:-/google_containers/pause-amd64:3.3sizeBytes:682696nodeInfo:architecture:amd64bootID:f1efc214-e9dd-42d2-8426-978ec9161310containerRuntimeVersion:docker://20.10.9kernelVersion:3.10.0-957._64kubeProxyVersion:::d05dd626909f446baae658ac5fbcf0cdoperatingSystem:linuxosImage:CentOSLinux7(Core)systemUUID:A5076CD8-A6F3-4613-8EC0-A643AEC3CA1E-apiVersion:v1kind:Nodemetadata:annotations:/ttl:"0"/controller-managed-attach-detach:"true"creationTimestamp:"2023-06-03T06:04:53Z"labels:/arch:/os:/arch:/hostname:/os:/node:""name:node02resourceVersion:"4166370"uid:ac0b2b8f-0d93-414e-b0b7-65ff79056402spec:podCIDR:100.64.0.0/24podCIDRs:-100.64.0.0/24status:addresses:-address:192.168..235.189type:InternalIP-address:node02type:Hostnameallocatable:cpu:"16"ephemeral-storage:"289899892666"hugepages-1Gi:"0"hugepages-2Mi:"0"memory:65704024Kipods:"110"capacity:cpu:"16"ephemeral-storage:314561516Kihugepages-1Gi:"0"hugepages-2Mi:"0"memory:65806424Kipods:"110"conditions:-lastHeartbeatTime:"2023-06-03T06:08:36Z"lastTransitionTime:"2023-06-03T06:08:36Z"message:Calicoisrunningonthisnodereason:CalicoIsUpstatus:"False"type:NetworkUnavailable-lastHeartbeatTime:"2023-07-05T09:35:56Z"lastTransitionTime:"2023-06-03T06:07:59Z"message:kubelethassufficientmemoryavailablereason:KubeletHasSufficientMemorystatus:"False"type:MemoryPressure-lastHeartbeatTime:"2023-07-05T09:35:56Z"lastTransitionTime:"2023-06-03T06:07:59Z"message:kubelethasnodiskpressurereason:KubeletHasNoDiskPressurestatus:"False"type:DiskPressure-lastHeartbeatTime:"2023-07-05T09:35:56Z"lastTransitionTime:"2023-06-03T06:07:59Z"message:kubelethassufficientPIDavailablereason:KubeletHasSufficientPIDstatus:"False"type:PIDPressure-lastHeartbeatTime:"2023-07-05T09:35:56Z"lastTransitionTime:"2023-06-03T06:08:40Z"message:kubeletispostingreadystatusreason:KubeletReadystatus:"True"type:Readydaemonpoints:kubeletpoint:Port:10250images:-names:-calico/node::437164545-names:-kubeguide/tomcat-app@sha256:7a9193c2e5c6c74b4ad49a8abbf75373d4ab76c8f8db87672dc526b96ac69ac4-kubeguide/tomcat-app:v1sizeBytes:358241257-names:-calico/cni::108767177-names:-calico/kube-controllers::52865826-names:-coredns/coredns:1.9.3sizeBytes:48803555-names:-calico/pod2daemon-flexvol::21894737-names:-/google_containers/pause-amd64:3.3sizeBytes:682696nodeInfo:architecture:amd64bootID:b8343e9a-fa30-4909-99b2-b6150cfbfbd4containerRuntimeVersion:docker://20.10.9kernelVersion:3.10.0-957._64kubeProxyVersion:::d05dd626909f446baae658ac5fbcf0cdoperatingSystem:linuxosImage:CentOSLinux7(Core)systemUUID:AEB3646B-ED8E-4116-A54F-305FBB717C34kind:Listmetadata:resourceVersion:""selfLink:""
