MySQL uses authentication plugins<\/em> to verify user identities. Depending on how your server is configured, a user may authenticate with:<\/p>\n\n\n\n If the wrong plugin is set, users may be unable to log in using a password, especially from applications like Node.js, PHP, WordPress, Python<\/strong>, etc. Step 1:<\/strong><\/p>\n\n\n\n Login to MySQL as root.<\/p>\n\n\n\n Step 2:<\/strong><\/p>\n\n\n\n Check Current Plugin for a User.<\/p>\n\n\n\n Example output:<\/strong><\/p>\n\n\n\n 1. Convert user to This helps when older applications cannot use Usage Example:<\/strong><\/p>\n\n\n\n Use when older PHP\/MySQL clients fail to connect.<\/p>\n\n\n\n 2. Convert user to Usage Example with Node.js:<\/strong><\/p>\n\n\n\n 3. Convert user to Good for local CLI access only.<\/p>\n\n\n\n Usage Example:<\/strong><\/p>\n\n\n\n User logs using system login (without MySQL password):<\/p>\n\n\n\n Step 3: <\/strong><\/p>\n\n\n\n Verify Plugin Change<\/p>\n\n\n\n Note: <\/strong><\/p>\n\n\n\n Conclusion:<\/strong><\/p>\n\n\n\n Understanding and modifying MySQL authentication plugins is essential for database security and application compatibility. Newer systems use Introduction: MySQL uses authentication plugins to verify user identities. 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auth_socket<\/code> \u2192 Login without password (Linux system user)<\/li>\n\n\n\nmysql_native_password<\/code> \u2192 Old-style MySQL password hashing<\/li>\n\n\n\ncaching_sha2_password<\/code> \u2192 (Default in MySQL 8) Faster & more secure authentication<\/li>\n<\/ul>\n\n\n\n
This guide shows how to change the MySQL password authentication plugin<\/strong> manually from the command line (without cPanel).<\/p>\n\n\n\n$mysql -u root -p<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n $SELECT user, host, plugin FROM mysql.user;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n user<\/th> host<\/th> plugin<\/th><\/tr><\/thead> appuser<\/td> localhost<\/td> auth_socket<\/td><\/tr> root<\/td> localhost<\/td> caching_sha2_password<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Change Auth Plugin (with Usage Examples)<\/h3>\n\n\n\n
mysql_native_password<\/code> (for compatibility)<\/strong><\/p>\n\n\n\n\n
caching_sha2_password<\/code>.<\/p>\n\n\n\n$ ALTER USER ‘appuser’@’localhost’ IDENTIFIED WITH mysql_native_password BY ‘StrongPassword@123’;
$ FLUSH PRIVILEGES;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n$ mysql -u appuser -p<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n caching_sha2_password<\/code> (Recommended for MySQL 8)<\/strong><\/p>\n\n\n\n$ ALTER USER ‘appuser’@’localhost’ IDENTIFIED WITH caching_sha2_password BY ‘StrongPassword@123’;
$ FLUSH PRIVILEGES;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nrequire(‘mysql2’).createConnection({
user: ‘appuser’,
password: ‘StrongPassword@123’
});<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\nauth_socket<\/code> (No password required)<\/strong><\/p>\n\n\n\n$ ALTER USER ‘appuser’@’localhost’ IDENTIFIED WITH auth_socket;
$ FLUSH PRIVILEGES;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n$ sudo mysql -u appuser<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n $ SELECT user, host, plugin FROM mysql.user WHERE user=’appuser’;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Plugin<\/th> Best Use<\/th><\/tr><\/thead> caching_sha2_password<\/code><\/td>New servers, modern apps<\/td><\/tr> mysql_native_password<\/code><\/td>Legacy apps, WordPress, older PHP<\/td><\/tr> auth_socket<\/code><\/td>Provides automatic MySQL login based on the Linux user account.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n caching_sha2_password<\/code>, but older systems still rely on mysql_native_password<\/code>. Always choose the plugin that matches application requirements, secure the user\u2019s password, and verify permissions after changes.<\/p>\n","protected":false},"excerpt":{"rendered":"