怎么做一个电商网站,加强志鉴网站建设,网页打不开了,公司网络推广的作用1、kubectl 命令可以列出所有命令
2、kubectl version 命令可以查看版本号
3、kubectl cluster-info命令可以查看集群信息#xff08;192.168.218.136:6443 即为kube-apiserver的IP和端口。#xff09; [rootk8s-master ~]# kubectl cluster-info Kubernetes master is run…1、kubectl 命令可以列出所有命令
2、kubectl version 命令可以查看版本号
3、kubectl cluster-info命令可以查看集群信息192.168.218.136:6443 即为kube-apiserver的IP和端口。 [rootk8s-master ~]# kubectl cluster-info Kubernetes master is running at https://192.168.218.136:6443 KubeDNS is running at https://192.168.218.136:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy To further debug and diagnose cluster problems, use kubectl cluster-info dump.
4、也可以通过 用户主目录下的.kube/config文件查看集群信息 用户主目录下的.kube/config [rootk8s-master ~]# cat .kube/config apiVersion: v1 clusters: - cluster: certificate-authority-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FUR...0VSVElGSUNBVEUtLS0tLQo server: https://192.168.218.136:6443 name: kubernetes contexts: - context: cluster: kubernetes user: kubernetes-admin name: kubernetes-adminkubernetes current-context: kubernetes-adminkubernetes kind: Config preferences: {} users: - name: kubernetes-admin user: client-certificate-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1J....BVEUtLS0tLQo client-key-data: LS0tLS1CRUdJTiBSU0EgUFJJVkFURSBLRVktLS...QVRFIEtFWS0tLS0tCg
5、还可以通过config view命令查看配置 [rootk8s-master ~]# kubectl config view apiVersion: v1 clusters: - cluster: certificate-authority-data: DATAOMITTED server: https://192.168.218.136:6443 name: kubernetes contexts: - context: cluster: kubernetes user: kubernetes-admin name: kubernetes-adminkubernetes current-context: kubernetes-adminkubernetes kind: Config preferences: {} users: - name: kubernetes-admin user: client-certificate-data: REDACTED client-key-data: REDACTED ---然后可以通过curl访问 api server api接口。 也可以使用 10中的proxy访问api接口。 curl -k https://192.168.218.136:6443 --cert /etc/kubernetes/pki/apiserver-kubelet-client.crt --key /etc/kubernetes/pki/apiserver-kubelet-client.key
6、通过kubectl get node 查看节点信息 7、可通过kubectl get ns 拆开所有命名空间 8、通过kubectl get pod -A 查看所有命名空间下的pod 9、通过kubectl get svc-A 查看所有命名空间下的svc 10、kubectl proxy 命令开启代理 [rootk8s-master ~]# kubectl proxy --port8080 Starting to serve on 127.0.0.1:808011、通过proxy http接口访问k8s [rootk8s-master ~]# curl 127.0.0.1:8080 { paths: [ /api, /api/v1, /apis, /apis/, /apis/apps, /apis/apps/v1, /apis/autoscaling, /apis/autoscaling/v1, /apis/autoscaling/v2beta1, /apis/autoscaling/v2beta2, /apis/batch, /apis/batch/v1, /apis/extensions, /apis/extensions/v1beta1, /apis/networking.k8s.io, /apis/networking.k8s.io/v1, /apis/networking.k8s.io/v1beta1, /apis/node.k8s.io, /apis/node.k8s.io/v1beta1, /apis/policy, /apis/policy/v1beta1, /healthz, /healthz/autoregister-completion, /healthz/etcd, /healthz/log, /healthz/ping, /livez, /livez/autoregister-completion, /livez/etcd, /livez/log, /livez/ping, /logs, /metrics, /openapi/v2, /readyz, /readyz/autoregister-completion, /readyz/etcd, /readyz/log, /readyz/ping, /readyz/shutdown, /version ......
[rootk8s-master ~]# curl 127.0.0.1:8080/livez/ping ok
[rootk8s-master ~]# curl 127.0.0.1:8080/version { major: 1, minor: 18, gitVersion: v1.18.0, gitCommit: 9e991415386e4cf155a24b1da15becaa390438d8, gitTreeState: clean, buildDate: 2020-03-25T14:50:46Z, goVersion: go1.13.8, compiler: gc, platform: linux/amd64 } [rootk8s-master ~]# curl 127.0.0.1:8080/healthz ok
[rootk8s-master ~]# curl 127.0.0.1:8080/healthz/etcd ok
[rootk8s-master ~]# curl 127.0.0.1:8080/healthz/log ok
[rootk8s-master ~]# curl 127.0.0.1:8080/api { kind: APIVersions, versions: [ v1 ], serverAddressByClientCIDRs: [ { clientCIDR: 0.0.0.0/0, serverAddress: 192.168.218.136:6443 } ] }
[rootk8s-master ~]# curl 127.0.0.1:8080/api/v1 { kind: APIResourceList, groupVersion: v1, resources: [ { name: bindings, singularName: , namespaced: true, kind: Binding, verbs: [ create ] }, { name: componentstatuses, singularName: , namespaced: false, kind: ComponentStatus, verbs: [ get, list ], shortNames: [ cs ] },
curl 127.0.0.1:8080/api/v1/pods --查看所有pods curl 127.0.0.1:8080/api/v1/namespaces/kube-system/pods/kube-scheduler-k8s-master --查看 某个命名空间下的某个pod
20、kubeletkube-scheduler-k8s-master、kube-controller-manager-k8s-master、kube-proxy-s8v4t 是如何找到 知道kubeapiserver的接口地址的呢 他们都挂载了自己的配置文件在 /etc/kubernetes/ 目录下。 其中 admin.conf 会被拷贝到 用户家目录下的 .kube/config 文件中。
即cp /etc/kubernetes/admin.conf ~/.kube/config [rootk8s-master ~]# ll /etc/kubernetes/ -rw------- 1 root root 5451 7月 28 19:38 admin.conf -rw------- 1 root root 5491 7月 28 19:38 controller-manager.conf -rw------- 1 root root 1879 7月 28 19:38 kubelet.conf drwxr-xr-x 2 root root 113 7月 28 19:38 manifests drwxr-xr-x 3 root root 4096 7月 28 19:38 pki -rw------- 1 root root 5439 7月 28 19:38 scheduler.conf
另外证书文件都放在pki目录下。
21、kubeapiserver 也可以开启http端口这样就不需要证书了。 22、查看日志 kubectl logs kube-scheduler-k8s-master -n kube-system kubectl logs kube-scheduler-k8s-master -c kube-scheduler -n kube-system
22、proxy的代理功能 curl http://ip:8080/api/v1/proxy/namespace/{namespace}/services/{name} 相当于访问services的url curl http://ip:8080/api/v1/proxy/namespace/{namespace}/pods/{name} 相当于访问pod的url
23、访问etcd数据库
登录到k8s的etcd容器中设置下面的环境变量
export ETCDCTL_ENDPOINTShttps://127.0.0.1:2379 export ETCDCTL_CACERT/etc/kubernetes/pki/etcd/ca.crt export ETCDCTL_CERT/etc/kubernetes/pki/etcd/healthcheck-client.crt export ETCDCTL_KEY/etc/kubernetes/pki/etcd/healthcheck-client.key export ETCDCTL_API3
然后就可以通过etcdctl命令访问etcd数据库了
etcdctl get /gaofeng/name etcdctl put /gaofeng/name gg
etcdctl get --prefix --keys-only /
etcdctl get /registry/services/specs/default/kubernetes
