如何设置CA证书来强化PostgreSQL的安全性

这篇文章主要介绍"如何设置CA证书来强化PostgreSQL的安全性"，在日常操作中，相信很多人在如何设置CA证书来强化PostgreSQL的安全性问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"如何设置CA证书来强化PostgreSQL的安全性"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

设置CA
CA应该是一台离线的处于高度安全环境中的计算机。

生成CA私钥

sudo openssl genrsa -des3 -out /etc/ssl/private/trustly-ca.key 2048sudo chown root:ssl-cert /etc/ssl/private/trustly-ca.keysudo chmod 640 /etc/ssl/private/trustly-ca.key

生成CA证书

sudo openssl req -new -x509 -days 3650 \-subj '/C=SE/ST=Stockholm/L=Stockholm/O=Trustly/CN=trustly' \-key /etc/ssl/private/trustly-ca.key \-out /usr/local/share/ca-certificates/trustly-ca.crtsudo update-ca-certificates

配置PostgreSQL服务器
生成PostgreSQL服务器私钥

# Remove default snakeoil certssudo rm /var/lib/postgresql/9.1/main/server.keysudo rm /var/lib/postgresql/9.1/main/server.crt# Enter a passphrasesudo -u postgres openssl genrsa -des3 -out /var/lib/postgresql/9.1/main/server.key 2048# Remove the passphrasesudo -u postgres openssl rsa -in /var/lib/postgresql/9.1/main/server.key -out /var/lib/postgresql/9.1/main/server.keysudo -u postgres chmod 400 /var/lib/postgresql/9.1/main/server.key

生成PostgreSQL服务器证书签署请求(CSR)

sudo -u postgres openssl req -new -nodes -key /var/lib/postgresql/9.1/main/server.key -days 3650 -out /tmp/server.csr -subj '/C=SE/ST=Stockholm/L=Stockholm/O=Trustly/CN=postgres'

用CA私钥签署PostgreSQL服务器证书请求

sudo openssl req -x509 \-key /etc/ssl/private/trustly-ca.key \-in /tmp/server.csr \-out /var/lib/postgresql/9.1/main/server.crtsudo chown postgres:postgres /var/lib/postgresql/9.1/main/server.crt

创建根(root)证书=PostgreSQL服务器证书+CA证书

sudo -u postgres sh -c 'cat /var/lib/postgresql/9.1/main/server.crt /etc/ssl/certs/trustly-ca.pem > /var/lib/postgresql/9.1/main/root.crt'sudo cp /var/lib/postgresql/9.1/main/root.crt /usr/local/share/ca-certificates/trustly-postgresql.crtsudo update-ca-certificates

授权访问

CREATE GROUP sslcertusers;ALTER GROUP sslcertusers ADD USER joel; # /etc/postgresql/9.1/main/pg_hba.conf:hostssl nameofdatabase +sslcertusers 192.168.1.0/24 cert clientcert=1

重启PostgreSQL

sudo service postgresql restart

PostgreSQL客户端设置
从PostgreSQL服务器上复制根证书

mkdir ~/.postgresqlcp /etc/ssl/certs/trustly-postgresql.pem ~/.postgresql/root.crt

生成PostgreSQL客户端私钥

openssl genrsa -des3 -out ~/.postgresql/postgresql.key 1024 # If this is a server, remove the passphrase:openssl rsa -in ~/.postgresql/postgresql.key -out ~/.postgresql/postgresql.key

生成PostgreSQL客户端证书签署请求并签署

# Replace "joel" with username:openssl req -new -key ~/.postgresql/postgresql.key -out ~/.postgresql/postgresql.csr -subj '/C=SE/ST=Stockholm/L=Stockholm/O=Trustly/CN=joel'sudo openssl x509 -req -in ~/.postgresql/postgresql.csr -CA /etc/ssl/certs/trustly-ca.pem -CAkey /etc/ssl/private/trustly-ca.key -out ~/.postgresql/postgresql.crt -CAcreateserialsudo chown joel:joel -R ~/.postgresqlsudo chmod 400 -R ~/.postgresql/postgresql.key

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