从 RDS 代理的标准 IAM 身份验证迁移至端到端 IAM 身份验证

迁移至端到端 IAM 身份验证

1. 更新 RDS 代理 IAM 角色权限

   创建同时包含 Secrets Manager 和 rds:db-connect 权限的更新代理权限策略：

   # Create updated proxy permission policy
   cat > updated-proxy-policy.json ≪ EOF

   {
   
     "Version": "2012-10-17",		 	 	 
   
     "Statement": [
       {
         "Sid": "GetSecretsValue",
         "Action": [
           "secretsmanager:GetSecretValue"
         ],
         "Effect": "Allow",
         "Resource": [
           "arn:aws:secretsmanager:us-east-1:123456789012:secret:secretName-1234f"
         ]
       },
       {
         "Sid": "RdsDBConnect",
         "Action": [
           "rds-db:connect"
         ],
         "Effect": "Allow",
         "Resource": [
           "arn:aws:rds-db:us-east-1:123456789012:dbuser:cluster-ABCDEFGHIJKL01234/jane_doe"
         ]
       }
     ]
   }
   

   更新代理角色策略：

   aws iam put-role-policy \
               --role-name RDSProxyRole \
               --policy-name UpdatedProxyPermissions \
               --policy-document file://updated-proxy-policy.json

2. 修改您的 RDS 代理以实现端到端 IAM 身份验证

   aws rds modify-db-proxy \
     --db-proxy-name my-database-proxy \
     --default-auth-scheme IAM_AUTH \
     --region us-east-1

   继续操作之前，请验证 RDS 代理状态是否为可用且 DefaultAuthScheme 为 IAM_AUTH，以确保迁移期间零停机。

   aws rds describe-db-proxies --db-proxy-name my-database-proxy --region us-east-1

   预期输出：

   {
     "DBProxies": [
       {
         "DBProxyName": "my-database-proxy",
         "DBProxyArn": "arn:aws:rds:us-east-1:123456789012:db-proxy:prx-0123456789abcdef",
         "Status": "available",
         ...
         "DefaultAuthScheme": "IAM_AUTH"
       }
     ]
   }

3. 在数据库上启用 IAM 身份验证

   aws rds modify-db-cluster \
     --db-cluster-identifier my-database-cluster \
     --enable-iam-database-authentication \
     --region us-east-1

4. 为 IAM 身份验证配置数据库用户

   对于 RDS for PostgreSQL：

   GRANT rds_iam TO jane_doe;

   对于 RDS for MySQL 和 RDS for MariaDB：

   ALTER USER 'jane_doe' IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS';
   ALTER USER 'jane_doe'@'%' REQUIRE SSL;

5. 无需更改客户端应用程序代码。连接过程保持不变：

   对于 RDS for PostgreSQL：

   # Generate authentication token
   export PGPASSWORD=$(aws rds generate-db-auth-token \
     --hostname my-database-proxy.proxy-ABCDEFGHIJKL01234.us-east-1.rds.amazonaws.com \
     --port 5432 \
     --username jane_doe \
     --region us-east-1)
   
   # Connect to database through proxy
   psql "host=my-database-proxy.proxy-ABCDEFGHIJKL01234.us-east-1.rds.amazonaws.com port=5432 user=jane_doe dbname=postgres password=$PGPASSWORD sslmode=require sslrootcert=us-east-1-bundle.pem"

   对于 RDS for MySQL 和 RDS for MariaDB：

   # Generate authentication token
   export MYSQL_PWD=$(aws rds generate-db-auth-token \
     --hostname my-database-proxy.proxy-ABCDEFGHIJKL01234.us-east-1.rds.amazonaws.com \
     --port 3306 \
     --username jane_doe \
     --region us-east-1)
   
   # Connect to database through proxy
   mysql -h my-database-proxy.proxy-ABCDEFGHIJKL01234.us-east-1.rds.amazonaws.com \
     -P 3306 \
     -u jane_doe \
     --ssl-ca=us-east-1-bundle.pem \
     --enable-cleartext-plugin