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小編給大家分享一下Kubernetes配置文件目錄結(jié)構(gòu)怎么看,希望大家閱讀完這篇文章之后都有所收獲,下面讓我們一起去探討吧!
Kubernetes的配置目錄包括/etc/kubernetes、/home/supermap/.kube和/var/lib/kubelet目錄。
下面我們來看一看,這些目錄里到底有些什么文件(操作系統(tǒng)使用Ubuntu 18.04LTS desktop)。
安裝tree命令:
sudo apt install tree
顯示/etc/kubernetes目錄結(jié)構(gòu):
supermap@podc01:/etc/kubernetes$ tree . . ├── admin.conf ├── controller-manager.conf ├── kubelet.conf ├── manifests │ ├── etcd.yaml │ ├── kube-apiserver.yaml │ ├── kube-controller-manager.yaml │ └── kube-scheduler.yaml ├── pki │ ├── apiserver.crt │ ├── apiserver-etcd-client.crt │ ├── apiserver-etcd-client.key │ ├── apiserver.key │ ├── apiserver-kubelet-client.crt │ ├── apiserver-kubelet-client.key │ ├── ca.crt │ ├── ca.key │ ├── etcd │ │ ├── ca.crt │ │ ├── ca.key │ │ ├── healthcheck-client.crt │ │ ├── healthcheck-client.key │ │ ├── peer.crt │ │ ├── peer.key │ │ ├── server.crt │ │ └── server.key │ ├── front-proxy-ca.crt │ ├── front-proxy-ca.key │ ├── front-proxy-client.crt │ ├── front-proxy-client.key │ ├── sa.key │ └── sa.pub ├── scheduler.conf └── tmp [error opening dir] 4 directories, 30 files
主用戶目錄下的隱藏目錄.kube包含用戶的配置參數(shù)和緩存數(shù)據(jù)。目錄結(jié)構(gòu)為:
/home/supermap/.kube ├── cache │ └── discovery │ ├── 10.1.1.181_6443 │ └── 10.1.1.201_6443 ├── config └── http-cache ├── 028d83935e12ce471cbe29f4096ef4ed
其中,配置文件config的內(nèi)容為:
apiVersion: v1 clusters: - cluster: certificate-authority-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0t... server: https://10.1.1.201:6443 name: kubernetes contexts: - context: cluster: kubernetes user: kubernetes-admin name: kubernetes-admin@kubernetes current-context: kubernetes-admin@kubernetes kind: Config preferences: {} users: - name: kubernetes-admin user: client-certificate-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1... client-key-data: LS0tLS1CRUdJTiBSU0EgUFJJVkFURSBLRVktLS0tLQpNSUl...
每一個ks節(jié)點都需要運行kubelet服務(wù)。kubelet服務(wù)的配置在/var/lib/kubelet目錄下:
supermap@podc01:/var/lib/kubelet$ tree . ├── config.yaml ├── cpu_manager_state ├── device-plugins │ ├── DEPRECATION │ ├── kubelet_internal_checkpoint │ └── kubelet.sock ├── kubeadm-flags.env ├── pki │ ├── kubelet-client-2018-11-23-10-08-12.pem │ ├── kubelet-client-2018-11-23-10-08-38.pem │ ├── kubelet-client-current.pem -> /var/lib/kubelet/pki/kubelet-client-2018-11-23-10-08-38.pem │ ├── kubelet.crt │ └── kubelet.key ├── plugin-containers [error opening dir] ├── plugins [error opening dir] ├── plugins_registry [error opening dir] ├── pod-resources [error opening dir] └── pods [error opening dir] 7 directories, 11 files
kubelet使用systemd管理,service定義文件位于: /lib/systemd/system/kubelet.service。
最新的dropin文件位于: /etc/systemd/system/kubelet.service.d,內(nèi)容為:
supermap@podc01:/etc/systemd/system/kubelet.service.d$ cat 10-kubeadm.conf # Note: This dropin only works with kubeadm and kubelet v1.11+ [Service] Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf" Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml" # This is a file that "kubeadm init" and "kubeadm join" generates at runtime, populating the KUBELET_KUBEADM_ARGS variable dynamically EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env # This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably, the user should use # the .NodeRegistration.KubeletExtraArgs object in the configuration files instead. KUBELET_EXTRA_ARGS should be sourced from this file. EnvironmentFile=-/etc/default/kubelet ExecStart= ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS
可以看到,在新的kubernetes配置結(jié)構(gòu)中,這個kublet服務(wù)參數(shù)的配置有了很大的變化。啟動參數(shù)不再放在kubelet.service文件里了,放到了/var/lib/kubelet、/etc/default/kubelet。
注意,這個變化可能會導(dǎo)致以前的很多手動安裝的腳本工具不再可用。
看完了這篇文章,相信你對“Kubernetes配置文件目錄結(jié)構(gòu)怎么看”有了一定的了解,如果想了解更多相關(guān)知識,歡迎關(guān)注億速云行業(yè)資訊頻道,感謝各位的閱讀!
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