curl: (60) SSL 证书问题：无法获取本地颁发者证书

Question

编辑： 我已经从 curl.haxx.se 更新了我的根 CA 证书。

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当我尝试时，结果curl -Iv https://yahoo.com出现错误unable to get local issuer certificate。但是，如果我尝试，curl -Iv --cacert /etc/ssl/certs/ca-certificates.crt https://yahoo.com我会得到一个没有任何错误的结果。

奇怪curl -Iv https://google.com地正常工作。但curl -Iv https://deb.nodesource.com没有。

有没有机会克服这个问题？（通过更改卷曲配置等）

root@ip-172-31-40-176:/var# curl -Iv https://yahoo.com
* Rebuilt URL to: https://yahoo.com/
* Hostname was NOT found in DNS cache
*   Trying 206.190.36.45...
* Connected to yahoo.com (206.190.36.45) port 443 (#0)
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS alert, Server hello (2):
* SSL certificate problem: unable to get local issuer certificate
* Closing connection 0
curl: (60) SSL certificate problem: unable to get local issuer certificate
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.

Answer 1

因为 curl 无法验证服务器提供的证书。

有两种绕过方式：

1. 添加-k允许 curl 进行不安全连接的选项，该选项不验证证书。

2.添加root curl ca（点击这里下载）到/etc/ssl/certs/nodesource-ca.crt