docker - 如何修复 "SSL certificate problem: self signed certificate in certificate chain"错误？

Question

我有一个基于 Linux 的 Docker 容器，如果我这样做:

curl https://google.com

...然后我得到一个错误:

curl: (60) SSL certificate problem: self signed certificate in certificate chain More details here: https://curl.haxx.se/docs/sslcerts.html

任何 URL 都会发生同样的情况 - 错不在 Google。

上面引用的链接提供了各种解决方案，除了最后一个建议更新证书存储的解决方案外，其他似乎都不合适。但是没有关于如何执行此操作的说明(或者至少没有对我有意义的说明)。

这是正确的做法吗？如果正确的话如何做？

---

更新:根据要求，结果如下:

openssl s_client -showcerts -connect www.google.com:443

CONNECTED(00000003)
depth=3 DC = com, DC = forestroot, CN = SHA256RootCA
verify error:num=19:self signed certificate in certificate chain
---
Certificate chain
 0 s:/C=US/ST=California/L=Mountain View/O=Google LLC/CN=www.google.com
   i:/CN=ssl-decrypt
-----BEGIN CERTIFICATE-----
MIIDXzCCAkegAwIBAgIIXIk3p8xOX/kwDQYJKoZIhvcNAQELBQAwFjEUMBIGA1UE
AxMLc3NsLWRlY3J5cHQwHhcNMTgxMjE5MDgxNzAwWhcNMTkwMzEzMDgxNzAwWjBo
...
tq0VAGIoj4+YhO6bktTq3alCRoLstJuuxjVdb1wRkH4YRi0I6ZAB1Cw+M8Lg+2eQ
KuEo
-----END CERTIFICATE-----
 1 s:/CN=ssl-decrypt
   i:/DC=com/DC=bgs/CN=SHA256IssueCA
-----BEGIN CERTIFICATE-----
MIIGzDCCBLSgAwIBAgITEQAADvB9T7mSaacwDQABAAAO8DANBgkqhkiG9w0BAQsF
ADBCMRMwEQYKCZImiZPyLGQBGRYDY29tMRMwEQYKCZImiZPyLGQBGRYDYmdzMRYw
...
1z9f/nkj2XTRyGeACoy0qRd5uXJHp1iGM27l3RFDR9OjrfPV56pOBUYWAlc9Nn+1
Vr3qUZrcCkROrmYisVF4jg==
-----END CERTIFICATE-----
 2 s:/DC=com/DC=MyCompanyServer/CN=SHA256IssueCA
   i:/DC=com/DC=MyCompanyServer/CN=SHA256RootCA
-----BEGIN CERTIFICATE-----
MIIH4zCCBcugAwIBAgITOQAAAAOa4wv9nnK0uQAAAAAAAzANBgkqhkiG9w0BAQsF
ADBIMRMwEQYKCZImiZPyLGQBGRYDY29tMRowGAYKCZImiZPyLGQBGRYKZm9yZXN0
...
IomErcbcymIWBmN75PVMsk9EMyqDP394jG8+IOK+lVUVX4pxzhdd7eYbqTAwDE1X
bNWcZZkt/w==
-----END CERTIFICATE-----
 3 s:/DC=com/DC=MyCompanyServer/CN=SHA256RootCA
   i:/DC=com/DC=MyCompanyServer/CN=SHA256RootCA
-----BEGIN CERTIFICATE-----
MIIFgzCCA2ugAwIBAgIQULxmYXGJ1aFIlIyCHA4NIzANBgkqhkiG9w0BAQsFADBI
MRMwEQYKCZImiZPyLGQBGRYDY29tMRowGAYKCZImiZPyLGQBGRYKZm9yZXN0cm9v
...
jQBLY0/KIjHywv66GhtVWpexgQcXrLxQP2VHW7eXpsylvwkNU5XNQYzHTB7u+w5C
VunfRLt/7mVWyURcwkOre38tVSByKR4=
-----END CERTIFICATE-----
---
Server certificate
subject=/C=US/ST=California/L=Mountain View/O=Google LLC/CN=www.google.com
issuer=/CN=ssl-decrypt
---
No client certificate CA names sent
Peer signing digest: SHA256
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 6556 bytes and written 302 bytes
Verification error: self signed certificate in certificate chain
---
New, TLSv1.2, Cipher is ECDHE-RSA-AES128-GCM-SHA256
Server public key is 2048 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES128-GCM-SHA256
    Session-ID: 723D9976F985887CA5F256EE3C2E7B44B9C98A6B440AAF4E19564AE101F78D00
    Session-ID-ctx:
    Master-Key: C3D8759A753C1D269FF9C00854E59B8C10ABC1E94AFE9F0166486A649FE295ACE1AF5E5BEDB0129E557E781BC860D2FA
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1548690163
    Timeout   : 7200 (sec)
    Verify return code: 19 (self signed certificate in certificate chain)
    Extended master secret: yes
---
read:errno=0

我从中收集到的信息是，该链中有属于我工作的公司(我已将其重命名为 MyCompanyServer)的证书，我想这就是问题所在。

我是否认为我需要为该证书安装某种 key ？这对我来说都是希腊语，所以对于新手问题深表歉意。

Answer 1

可能您在容器中没有可用的正确 CA 证书，因此无法验证 TLS 连接。

尝试安装 ca-certificates 包(包可能有不同的名称，这取决于使用的发行版)。

---

更新:

您的公司检查公司网络中的 TLS 连接，因此原始证书将替换为您的公司证书。您需要将公司 CA 证书添加到根 CA 证书。

Linux(Ubuntu、Debian):

• 将公司CA证书复制到目录/usr/local/share/ca-certificates/
• 运行 sudo update-ca-certificates

如果您的主机操作系统已经正确预配置了 CA 证书(包括公司 CA 证书)，那么您可以将它们作为一个卷安装到容器中:

docker run \
  -v /etc/ssl/certs/ca-certificates.crt:/etc/ssl/certs/ca-certificates.crt \
  ...

典型的 CA 证书位置:

• /etc/ssl/certs/ca-certificates.crt Debian/Ubuntu/Gentoo 等
• /etc/pki/tls/certs/ca-bundle.crt Fedora/RHEL 6
• /etc/ssl/ca-bundle.pem OpenSUSE
• /etc/pki/tls/cacert.pem OpenELEC
• /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem CentOS/RHEL 7