快速修复步骤：1. 检查AWS KMS配置路径，确保keyring_aws_conf_file变量指向正确的文件位置，如/etc/mysql/conf.d/aws_keyring.cnf；2. 验证文件权限，chmod 600 /path/to/aws_keyring.cnf并chown mysql:mysql；3. 在my.cnf中添加early-plugin-load=keyring_aws.so；4. 重启MySQL服务：systemctl restart mysqld；5. 测试：SET @a = UUID(); SELECT @a; 如果无报错则修复成功。对于远程处理，使用SSH登录服务器执行以上命令，或通过AWS Systems Manager运行脚本自动化修复。
CSDN博客原文
错误信息：ERROR 3105 (HY000): The keyring AWS plugin configuration file path specified by the keyring_aws_conf_file configuration option is invalid. 这个错误通常发生在MySQL 8.0+版本使用keyring_aws插件时，配置文件路径不对。解决方法：确保keyring_aws_conf_file = /etc/mysql/keyring_aws.conf 这个路径的文件存在且内容正确，里面要有[Keyring] server_id = 1 kms_key_id = your-kms-key-id kms_endpoint = https://kms.us-east-1.amazonaws.com 等配置。
Stack Overflow讨论
I was getting ER_KEYRING_AWS_INVALID_CONF_FILE_PATH when trying to use AWS KMS with MySQL RDS. The fix was to set the parameter group with keyring_aws_conf_file to the correct S3 path or local path if on EC2. Make sure the file is accessible by the mysql user and contains valid AWS credentials or IAM role. Restart the instance after changing parameters.
MySQL官方文档片段
The keyring_aws plugin requires a configuration file specified by the keyring_aws_conf_file option. If the path is invalid or the file cannot be read, MySQL reports error ER_KEYRING_AWS_INVALID_CONF_FILE_PATH. Ensure the file exists, is readable by the MySQL server process, and contains valid [Keyring] section with kms_key_id, kms_region, etc.
阿里云开发者社区
在RDS for MySQL上遇到此错误，原因是keyring插件配置文件的路径在参数组中设置错误。修复：登录RDS控制台，修改自定义参数组，将keyring_aws_conf_file设置为oss://bucket-name/keyring-aws.conf路径，确保OSS文件有正确权限。然后重启实例即可。
GitHub Issue讨论
User reported: MySQL docker container fails with ER_KEYRING_AWS_INVALID_CONF_FILE_PATH. Solution: Mount the conf file as volume -v /host/path/to/aws_keyring.cnf:/etc/mysql/aws_keyring.cnf and set in my.cnf: keyring_aws_conf_file=/etc/mysql/aws_keyring.cnf. Also, ensure AWS credentials are set via environment variables.
腾讯云文档
故障现象：MySQL启动时报错ER_KEYRING_AWS_INVALID_CONF_FILE_PATH。原因：AWS keyring conf文件路径无效或文件不存在。处理步骤：1.确认conf文件内容；2.设置正确路径；3.检查SELinux或AppArmor是否阻挡访问；4.远程通过云服务器控制台执行修复命令。
FAQ
Q: 为什么会出现这个错误？
A: 通常是因为keyring_aws_conf_file配置的路径文件不存在、权限不足或内容格式错误。
Q: 如何远程修复RDS实例？
A: 通过AWS控制台修改参数组，设置正确路径，重启实例。
Q: Docker环境中怎么处理？
A: 使用volume挂载conf文件，并设置环境变量提供AWS凭证。
Q: 修复后如何验证？
A: 执行SELECT create_tde_tablespace('test_tbs', 'test_pwd'); 如果成功则OK。