安装k8s时加入节点报错

执行加入节点的时候报错：

kubeadm join cluster-endpoint:6443 --token mjpksj.cqi20x20ib0onokp \
    --discovery-token-ca-cert-hash sha256:342242cb2d5b83ef06ad47841f70adf0b72f1dee4b57c11a1c3e177dff605073 \
    --control-plane

报错信息如下：

failure loading certificate for CA: couldn't load the certificate file /etc/kubernetes/pki/ca.crt: open /etc/kubernetes/pki/ca.crt: no such file or directory

首先查看/etc/kubernetes下有没有pki目录，pki目录下是否有etcd，目录，如果有，执行下一步，如果没有，先创建pki，然后再pki目录中创建etcd目录。

执行以下执行：

scp root@cluster-endpoint:/etc/kubernetes/pki/ca.crt /etc/kubernetes/pki/
scp root@cluster-endpoint:/etc/kubernetes/pki/ca.key /etc/kubernetes/pki/
scp root@cluster-endpoint:/etc/kubernetes/pki/sa.key /etc/kubernetes/pki/
scp root@cluster-endpoint:/etc/kubernetes/pki/sa.pub /etc/kubernetes/pki/
scp root@cluster-endpoint:/etc/kubernetes/pki/front-proxy-ca.crt /etc/kubernetes/pki/
scp root@cluster-endpoint:/etc/kubernetes/pki/front-proxy-ca.key /etc/kubernetes/pki/
scp root@cluster-endpoint:/etc/kubernetes/pki/etcd/ca.crt /etc/kubernetes/pki/etcd/
scp root@cluster-endpoint:/etc/kubernetes/pki/etcd/ca.key /etc/kubernetes/pki/etcd/
scp root@cluster-endpoint:/etc/kubernetes/admin.conf /etc/kubernetes/admin.conf

从master主机上cp过来口令。

接着重新执行指令：

 kubeadm join cluster-endpoint:6443 --token mjpksj.cqi20x20ib0onokp     --discovery-token-ca-cert-hash sha256:342242cb2d5b83ef06ad47841f70adf0b72f1dee4b57c11a1c3e177dff605073     --control-plane

执行成功。