https://blog.csdn.net/fy573060627/article/details/52872740
1.linux 访问 https 证书问题
[root@kube-node2 ~]# curl https://192.168.0.200:8443
curl: (60) Peer's Certificate issuer is not recognized.
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.
2.现有 证书twca.cer 需要添加到 linux 证书信任列表
转换格式 .cer 到 .pem
openssl x509 -inform der -in twca.cer -out twca.pem
#追加到信任列表
cat twca.pem >> /etc/pki/tls/certs/ca-bundle.crt
[root@kube-node2 k8s]# cd /etc/kubernetes/cert/
[root@kube-node2 cert]# ls
ca-config.json kube-controller-manager-key.pem kubelet-client-current.pem kubernetes-key.pem metrics-server.pem
ca-key.pem kube-controller-manager.pem kubelet.crt kubernetes.pem
ca.pem kubelet-client-2018-09-11-11-01-24.pem kubelet.key metrics-server-key.pem
[root@kube-node2 cert]# cat ca.pem >> /etc/pki/tls/certs/ca-bundle.crt
[root@kube-node2 cert]# cat ca-key.pem >> /etc/pki/tls/certs/ca-bundle.crt
3.添加后访问就不会出现上面错误，
[root@kube-node2 cert]# curl https://192.168.0.200:8443
{
"kind": "Status",
"apiVersion": "v1",
"metadata": {
},
"status": "Failure",
"message": "Unauthorized",
"reason": "Unauthorized",
"code": 401
}[root@kube-node2 cert]#
