我想在集群中添加一个新的控制平面节点。
因此，我在现有的控制平面服务器中运行：kubeadm token create --print-join-command
我在新的控制平面节点中运行此命令：
kubeadm join 10.0.0.151:8443 --token m3g8pf.gdop9wz08yhd7a8a --discovery-token-ca-cert-hash sha256:634db22bc69b47b8f2b9f733d2f5e95cf8e56b349e68ac611a56d9da0cf481b8 --control-plane --apiserver-advertise-address 10.0.0.10 --apiserver-bind-port 6443 --certificate-key 33cf0a1d30da4c714755b4de4f659d6d5a02e7a0bd522af2ebc2741487e53166
- 我收到了以下消息：
[download-certs] Downloading the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
error execution phase control-plane-prepare/download-certs: error downloading certs: the Secret does not include the required certificate or key - name: external-e
tcd.crt, path: /etc/kubernetes/pki/apiserver-etcd-client.crt
- 我在现有的生产控制平面节点中运行：
kubeadm init phase upload-certs --upload-certs
[upload-certs] Storing the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
[upload-certs] Using certificate key:
0a3f5486c3b9303a4ace70ad0a9870c2605d67eebcd500d68a5e776bbd628a3b
- 在新的控制平面节点中重新运行此命令：
kubeadm join 10.0.0.151:8443 --token m3g8pf.gdop9wz08yhd7a8a --discovery-token-ca-cert-hash sha256:634db22bc69b47b8f2b9f733d2f5e95cf8e56b349e68ac611a56d9da0cf481b8 --control-plane --apiserver-advertise-address 10.0.0.10 --apiserver-bind-port 6443 --certificate-key 0a3f5486c3b9303a4ace70ad0a9870c2605d67eebcd500d68a5e776bbd628a3b
我收到了同样的信息：
[download-certs] Downloading the certificates in Secret "kubeadm-certs" in the "kube-system" Namespace
error execution phase control-plane-prepare/download-certs: error downloading certs: the Secret does not include the required certificate or key - name: external-etcd.crt, path: /etc/kubernetes/pki/apiserver-etcd-client.crt
To see the stack trace of this error execute with --v=5 or higher
我错在哪里了？
在执行此操作之前，我在新节点中安装了所有证书：
# ls /etc/kubernetes/pki/
apiserver.crt apiserver.key ca.crt front-proxy-ca.crt front-proxy-client.key
apiserver-etcd-client.crt apiserver-kubelet-client.crt ca.key front-proxy-ca.key sa.key
apiserver-etcd-client.key apiserver-kubelet-client.key etcd front-proxy-client.crt sa.pub
我不知道如何指定etcd证书文件：
Usage:
kubeadm init phase upload-certs [flags]
Flags:
--certificate-key string Key used to encrypt the control-plane certificates in the kubeadm-certs Secret.
--config string Path to a kubeadm configuration file.
-h, --help help for upload-certs
--kubeconfig string The kubeconfig file to use when talking to the cluster. If the flag is not set, a set of standard locations can be searched for an existing kubeconfig file. (default "/etc/kubernetes/admin.conf")
--skip-certificate-key-print Don't print the key used to encrypt the control-plane certificates.
--upload-certs Upload control-plane certificates to the kubeadm-certs Secret.
Global Flags:
--add-dir-header If true, adds the file directory to the header of the log messages
--log-file string If non-empty, use this log file
--log-file-max-size uint Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
--one-output If true, only write logs to their native severity level (vs also writing to each lower severity level)
--rootfs string [EXPERIMENTAL] The path to the 'real' host root filesystem.
--skip-headers If true, avoid header prefixes in the log messages
--skip-log-headers If true, avoid headers when opening log files
-v, --v Level number for the log level verbosity
您还需要将--config标志传递给kubeadm init phase命令(如果需要，请使用sudo(。所以不是：
kubeadm init phase upload-certs --upload-certs
例如，您应该运行：
kubeadm init phase upload-certs --upload-certs --config kubeadm-config.yaml
本主题还将通过将控制平面证书上载到集群文档进行解释。