CentOS7.9配置gaussdb200开启ssl

参考文献：
SSL证书管理 - 证书生成 - 《华为 openGauss (GaussDB) v2.1 使用手册》
客户端接入认证 - 用SSL进行安全的TCP-IP连接 - 《华为 openGauss (GaussDB) v2.1 使用手册》

提示：文中路径以实际为准

一、安装openssl

首先安装openssl，可通过直接键入"openssl"看是否会进入对应命令行来判断是否已经安装了openssl。
如果已经安装了可以跳过，如果未安装可通过以下命令进行安装：

yum install openssl

二、自认证证书生成过程

提示：在测试环境下，用户可以用通过以下方式进行数字证书测试。在客户的运行环境中，请使用从CA认证中心申请的数字证书。

• 搭建CA环境。

  --假设用户为omm已存在,搭建CA的路径为test
  --以root用户身份登录Linux环境,切换到用户omm
  mkdir test
  cd /etc/pki/tls
  --copy 配置文件openssl.cnf到test下
  cp openssl.cnf ~/test
  cd ~/test
  --到test文件夹下，开始搭建CA环境
  --创建文件夹demoCA./demoCA/newcerts./demoCA/private
  mkdir ./demoCA ./demoCA/newcerts ./demoCA/private
  chmod 700 ./demoCA/private
  --创建serial文件,写入01
  echo '01'>./demoCA/serial
  --创建文件index.txt
  touch ./demoCA/index.txt
  --修改openssl.cnf配置文件中的参数
  dir  = ./demoCA
  default_md      = sha256
  --至此CA环境搭建完成
  

• 生成根私钥。

  --生成CA私钥
  openssl genrsa -aes256 -out demoCA/private/cakey.pem 2048
  Generating RSA private key, 2048 bit long modulus
  .................+++
  ..................+++
  e is 65537 (0x10001)
  --设置根私钥的保护密码，假设为Test@123
  Enter pass phrase for demoCA/private/cakey.pem:
  --再次输入私钥密码 Test@123
  Verifying - Enter pass phrase for demoCA/private/cakey.pem:
  

• 生成根证书请求文件。

  --生成CA根证书申请文件careq.pem
  openssl req -config openssl.cnf -new -key demoCA/private/cakey.pem -out demoCA/careq.pem
  Enter pass phrase for demoCA/private/cakey.pem:
  --输入根私钥密码 Test@123
  You are about to be asked to enter information that will be incorporated
  into your certificate request.
  What you are about to enter is what is called a Distinguished Name or a DN.
  There are quite a few fields but you can leave some blank
  For some fields there will be a default value,
  If you enter '.', the field will be left blank.
  -----
  --以下名称请牢记，生成服务器证书和客户端证书时填写的信息需要与此处的一致
  Country Name (2 letter code) [AU]:CN
  State or Province Name (full name) [Some-State]:shanxi
  Locality Name (eg, city) []:xian
  Organization Name (eg, company) [Internet Widgits Pty Ltd]:Abc
  Organizational Unit Name (eg, section) []:hello
  --Common Name可以随意命名
  Common Name (eg, YOUR name) []:world
  --Email可以选择性填写
  Email Address []:
  Please enter the following 'extra' attributes
  to be sent with your certificate request
  A challenge password []:
  An optional company name []:
  

• 生成自签发根证书。

  —生成根证书时，需要修改openssl.cnf文件，设置basicConstraints=CA:TRUE 
  vi openssl.cnf 
  —生成CA自签发根证书 
  openssl ca -config openssl.cnf -out demoCA/cacert.pem -keyfile demoCA/private/cakey.pem -selfsign -infiles demoCA/careq.pem 
  Using configuration from openssl.cnf 
  Enter pass phrase for demoCA/private/cakey.pem: 
  —输入根私钥密码 Test@123 
  Check that the request matches the signature Signature ok Certificate Details:
      Serial Number: 1 (0x1)
      Validity
          Not Before: Feb 28 02:17:11 2017 GMT
          Not After : Feb 28 02:17:11 2018 GMT
      Subject:
          countryName               = CN
          stateOrProvinceName       = shanxi
          organizationName          = Abc
          organizationalUnitName    = hello
          commonName                = world
      X509v3 extensions:
          X509v3 Basic Constraints: 
              CA:FALSE
          Netscape Comment: 
              OpenSSL Generated Certificate
          X509v3 Subject Key Identifier: 
              F9:91:50:B2:42:8C:A8:D3:41:B0:E4:42:CB:C2:BE:8D:B7:8C:17:1F
          X509v3 Authority Key Identifier: 
              keyid:F9:91:50:B2:42:8C:A8:D3:41:B0:E4:42:CB:C2:BE:8D:B7:8C:17:1F
  Certificate is to be certified until Feb 28 02:17:11 2018 GMT (365 days) Sign the certificate? [y/n]:y
  1 out of 1 certificate requests certified, commit? [y/n]y
  Write out database with 1 new entries
  Data Base Updated
  --至此CA根证书自签发完成，根证书demoCA/cacert.pem。
  ...
  

1. 生成服务端证书私钥。

   --生成服务器私钥文件server.key
   openssl genrsa -aes256 -out server.key 2048
   Generating a 2048 bit RSA private key
   .......++++++
   ..++++++
   e is 65537 (0x10001)
   Enter pass phrase for server.key:
   --服务器私钥的保护密码，假设为Test@123
   Verifying - Enter pass phrase for server.key:
   --再次确认服务器私钥的保护密码，即为Test@123
   

2. 生成服务端证书请求文件。

   --生成服务器证书请求文件server.req
   openssl req -config openssl.cnf -new -key server.key -out server.req
   Enter pass phrase for server.key:
   You are about to be asked to enter information that will be incorporated
   into your certificate request.
   What you are about to enter is what is called a Distinguished Name or a DN.
   There are quite a few fields but you can leave some blank
   For some fields there will be a default value,
   If you enter '.', the field will be left blank.
   -----
   --以下填写的信息与创建CA时的信息一致
   Country Name (2 letter code) [AU]:CN
   State or Province Name (full name) [Some-State]:shanxi
   Locality Name (eg, city) []:xian
   Organization Name (eg, company) [Internet Widgits Pty Ltd]:Abc
   Organizational Unit Name (eg, section) []:hello
   --Common Name可以随意命名
   Common Name (eg, YOUR name) []:world
   Email Address []:
   --以下信息可以选择性填写
   Please enter the following 'extra' attributes
   to be sent with your certificate request
   A challenge password []:
   An optional company name []:
   

3. 生成服务端证书。

   --生成服务端/客户端证书时，修改openssl.cnf文件，设置basicConstraints=CA:FALSE
   vi openssl.cnf
   --修改demoCA/index.txt.attr中属性为no。
   vi demoCA/index.txt.attr
   --对生成的服务端证书请求文件进行签发，签发后将生成正式的服务端证书server.crt
   openssl ca  -config openssl.cnf -in server.req -out server.crt -days 3650 -md sha256
   Using configuration from /etc/ssl/openssl.cnf
   Enter pass phrase for ./demoCA/private/cakey.pem:
   Check that the request matches the signature
   Signature ok
   Certificate Details:
           Serial Number: 2 (0x2)
           Validity
               Not Before: Feb 27 10:11:12 2017 GMT
               Not After : Feb 25 10:11:12 2027 GMT
           Subject:
               countryName               = CN
               stateOrProvinceName       = shanxi
               organizationName          = Abc
               organizationalUnitName    = hello
               commonName                = world
           X509v3 extensions:
               X509v3 Basic Constraints: 
                   CA:FALSE
               Netscape Comment: 
                   OpenSSL Generated Certificate
               X509v3 Subject Key Identifier: 
                   EB:D9:EE:C0:D2:14:48:AD:EB:BB:AD:B6:29:2C:6C:72:96:5C:38:35
               X509v3 Authority Key Identifier: 
                   keyid:84:F6:A1:65:16:1F:28:8A:B7:0D:CB:7E:19:76:2A:8B:F5:2B:5C:6A
   Certificate is to be certified until Feb 25 10:11:12 2027 GMT (3650 days)
   --选择y对证书进行签发
   Sign the certificate? [y/n]:y
   --选择y，证书签发结束
   1 out of 1 certificate requests certified, commit? [y/n]y
   Write out database with 1 new entries
   Data Base Updated
   

   去掉私钥密码保护，方法如下：

   --去掉服务端私钥的密码保护
   openssl rsa -in server.key -out server.key
   --如果不去掉服务器私钥的密码保护需要使用gs_guc工具对存储密码进行加密保护
   gs_guc encrypt -M server -D ./
   --根据提示输入服务端私钥的密码，加密后会生成server.key.cipher,server.key.rand两个私钥密码保护文件
   

4. 客户端证书，私钥的生成。
   生成客户端证书和客户端私钥的方法和要求与服务器相同。

   --生成客户端私钥
   openssl genrsa -aes256 -out client.key 2048
   --生成客户端证书请求文件
   openssl req -config openssl.cnf -new -key client.key -out client.req 
   --对生成的客户端证书请求文件进行签发，签发后将生成正式的客户端证书client.crt
   openssl ca -config openssl.cnf -in client.req -out client.crt -days 3650 -md sha256
   

   去掉私钥密码保护，方法如下：

   --去掉客户端私钥的密码保护
   openssl rsa -in client.key -out client.key
   --如果不去掉客户端私钥的密码保护需要使用gs_guc工具对存储密码进行加密保护
   gs_guc encrypt -M client -D ./  
   --根据提示输入客户端私钥的密码，加密后会生成client.key.cipher,client.key.rand两个私钥密码保护文件。
   

   将客户端密钥转化为DER格式，方法如下：

   openssl pkcs8 -topk8 -outform DER -in client.key -out client.key.pk8 -nocrypt
   

5. 吊销证书列表的生成。
   如果需要吊销列表，可按照如下方法生成：

   --首先创建crlnumber文件
   echo '00'>./demoCA/crlnumber
   --吊销服务器证书
   openssl ca -config openssl.cnf -revoke server.crt
   --生成证书吊销列表sslcrl-file.crl
   openssl ca -config openssl.cnf -gencrl -out sslcrl-file.crl
   

三、修改配置文件

修改postgresql.conf配置文件，设置如下参数：

[omm@GaussDB200 ~]$ vi /srv/BigData/mppdb/data1/coordinator/postgresql.conf
[omm@GaussDB200 ~]$ cat /srv/BigData/mppdb/data1/coordinator/postgresql.conf |grep ssl
ssl = on				# (change requires restart)
#ssl_ciphers = 'ALL'			# allowed SSL ciphers
#ssl_renegotiation_limit = 512MB	# amount of data between renegotiations
ssl_cert_file = 'server.crt'		# (change requires restart)
ssl_key_file = 'server.key'		# (change requires restart)
ssl_ca_file = 'cacert.pem'			# (change requires restart)
ssl_crl_file = ''			# (change requires restart)
#设置服务器端是否强制要求SSL连接。该参数只有当参数ssl为on时才有效。
#require_ssl = on
[omm@GaussDB200 ~]$ 

修改pg_hba.conf文件，设置如下参数：

[omm@GaussDB200 ~]$ cat /srv/BigData/mppdb/data1/coordinator/pg_hba.conf |grep hostssl
# hostssl    DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
#表示允许任何用户从任意网段的主机上连接到任意数据库，使用sha256算法对密码进行加密，并且经过ssl加密传输。
# "hostssl" is an SSL-encrypted TCP/IP socket, and "hostnossl" is a
hostssl	all	all	0.0.0.0/0	sha256
[omm@GaussDB200 ~]$

四、重启数据库

重启数据库即可生效。我这里重启数据库是通过gaussdb的web管理页面操作的，通常情况下是“http://数据库ip:8080/web”。

有问题欢迎指出！