linux - 机架空间负载平衡器上的间歇性 SSL 证书错误

Question

下面是两个相隔几秒钟的连接。
如您所见，其中一个成功检索了 ssl 证书，而另一个则没有。

有没有人看过这个？我找不到相关信息。

首先:

$ openssl s_client -showcerts -status -connect www.myapp.co.uk:443
CONNECTED(00000003)
OCSP response: no response sent
depth=2 C = US, O = "VeriSign, Inc.", OU = VeriSign Trust Network, OU = "(c) 2006 VeriSign, Inc. - For authorized use only", CN = VeriSign Class 3 Public Primary Certification Authority - G5 verify error:num=20:unable to get local issuer certificate verify return:0
- ---
Certificate chain
 0 s:/C=US/ST=California/L=San Jose/O=myapp, Inc./OU=myappshipping(UK)/CN=www.myapp.co.uk
   i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3
- -----BEGIN CERTIFICATE-----
MIIFTDCCBDSgAwIBAgIQRvhZ5537NpZioCI4t2jVxDANBgkqhkiG9w0BAQUFADCD
tTELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQL
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Iz4us6rCn8y9XyqLVmlHRA==
- -----END CERTIFICATE-----
 1 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3
   i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign, Inc. - For authorized use only/CN=VeriSign Class 3 Public Primary Certification Authority - G5
- -----BEGIN CERTIFICATE-----
MIIF7DCCBNSgAwIBAgIQbsx6pacDIAm4zrz06VLUkTANBgkqhkiG9w0BAQUFADCD
yjELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMR8wHQYDVQQL
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KoZIhvcNAQEFBQADggEBAAyDJO/dwwzZWJz+NrbrioBL0aP3nfPMU++CnqOh5pfB
WJ11bOAdG0z60cEtBcDqbrIicFXZIDNAMwfCZYP6j0M3m+oOmmxw7vacgDvZN/R6
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Rs/iGAZeqa6ogZpHFt4MKGwlJ7net4RYxh84HqTEy2Y=
- -----END CERTIFICATE-----
 2 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign, Inc. - For authorized use only/CN=VeriSign Class 3 Public Primary Certification Authority - G5
   i:/C=US/O=VeriSign, Inc./OU=Class 3 Public Primary Certification Authority
- -----BEGIN CERTIFICATE-----
MIIE0DCCBDmgAwIBAgIQJQzo4DBhLp8rifcFTXz4/TANBgkqhkiG9w0BAQUFADBD
MQswCQYDVQQGEwJVUzEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xNzA1BgNVBAsT
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tOxFNfeKW/9mz1Cvxm1XjRl4t7mi0VfqH5pLr7rJjhJ+xr3/
- -----END CERTIFICATE-----
- ---
Server certificate
subject=/C=US/ST=California/L=San Jose/O=myapp, Inc./OU=myapp(UK)/CN=www.myapp.co.uk
issuer=/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)10/CN=VeriSign Class 3 Secure Server CA - G3
- ---
No client certificate CA names sent
- ---
SSL handshake has read 4279 bytes and written 643 bytes
- ---
New, TLSv1/SSLv3, Cipher is RC4-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1.1
    Cipher    : RC4-SHA
    Session-ID:
6CC8E831C13BAE68C7FB2E43F4E3552866F17F734BF425199DE79083CCEAD622
    Session-ID-ctx:
    Master-Key:
E09C83C3CE6DA1F11795CC2C3924D6C48A54BB63CB6A5FDAF389E619B5C97B00215E3A2E6872081E07A3B562045AE835
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1407940165
    Timeout   : 300 (sec)
    Verify return code: 20 (unable to get local issuer certificate)
- ---
^C

第二:

$ openssl s_client -showcerts -status -connect www.myapp.co.uk:443
CONNECTED(00000003)
139677867542184:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake
failure:s23_lib.c:177:
- ---
no peer certificate available
- ---
No client certificate CA names sent
- ---
SSL handshake has read 0 bytes and written 329 bytes
- ---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
- ---

如果我尝试 curl ，会发生这种情况:

$ curl -v https://www.myapp.co.uk
* About to connect() to www.myapp.co.uk port 443 (#0)
*   Trying 37.188.111.150...
* connected
* Connected to www.myapp.co.uk (37.188.111.150) port 443 (#0)
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* Unknown SSL protocol error in connection to www.myapp.co.uk:443
* Closing connection #0
curl: (35) Unknown SSL protocol error in connection to
www.myapp.co.uk:443

Answer 1

最终的问题是客户端服务器因为大量请求而被阻塞。 Rackspace 负载均衡器可以选择允许 IP 或网络，在我为客户端 IP 创建访问规则后，问题就解决了。

我得出这个结论是因为 SSL 配置要么有效要么无效，它们不会间歇性出现，所以问题需要出在其他地方，除此之外我们测试了来自其他服务器的相同调用并且每次都有效