Unable to call procedure after restoring sql dump on new db

[Robinwilliam15]

I have exported the sql dump file from my existing cloud sql db to a bucket then I have created a new db and restored the sql dump file i have chosen Entire Instance export while creating the dump file. On the new instance I have imported the sql dump file then I have added some procedures manually so while calling these procedures it is giving me error. 

sqL Error (1227): Access denied; you need (at least one of) the SYSTEM_VARIABLES_ADMIN or SESSION_VARIABLES_ADMIN privilege(s) for this operation

How can i fix this issue I am ready to create a new db also but I want to fix this issue asap.

the procedure runs alter query which is running fine on the previous db. I am running this via built-in user and it is not able to run it.

[ms4446]

The SQL error "Access denied; you need (at least one of) the SYSTEM_VARIABLES_ADMIN or SESSION_VARIABLES_ADMIN privilege(s)" occurs when the user executing a procedure lacks the necessary permissions to modify system or session variables. This often happens after restoring a database dump, as permissions might not be perfectly transferred.

Solution Steps

1. Check User Privileges: If using the built-in cloudsqlsuperuser or a similar user, it should have the necessary privileges. Verify by running:

   SHOW GRANTS FOR 'cloudsqlsuperuser'@'%';

   Ensure SYSTEM_VARIABLES_ADMIN and SESSION_VARIABLES_ADMIN are included. For custom users, grant the required privileges:

          GRANT SYSTEM_VARIABLES_ADMIN, SESSION_VARIABLES_ADMIN ON *.* TO 'your_user'@'%';

1. Procedure Review: Examine the procedures added manually for any code attempting to modify system or session variables (e.g., SET GLOBAL or SET SESSION). If these modifications are unnecessary, remove them.

2. Dump File Export/Import Considerations: Using an "Entire Instance" export is beneficial as it usually captures permissions along with data and schema. However, subtle permission issues can still arise. Additionally, ensure the MySQL version on the new Cloud SQL instance matches the original database to avoid compatibility issues that might cause permission errors.

3. Recreate the Database: If the above steps do not resolve the issue, consider recreating the database:

   • Delete the current new database.
   • Create a new Cloud SQL instance.
   • Before importing, grant the necessary privileges (SYSTEM_VARIABLES_ADMIN, SESSION_VARIABLES_ADMIN) to the user intended to run the procedures.
   • Import the SQL dump file.
   • Test the manually added procedures to ensure they function correctly.

Important Considerations: When granting privileges, be cautious and ensure that the user receiving them is trusted, as they will have significant control over the database environment. Always test changes in a staging or development environment before applying them to production.

Example Procedure Fix: If a procedure contains a line such as:

SET GLOBAL max_connections = 1000;

there are two options. First, if the procedure can function without this modification, simply remove the line. Second, if the change is necessary, refactor the procedure to work within the existing permissions, possibly finding an alternative approach to achieve the desired outcome without modifying a system variable.

[Robinwilliam15]

I ran SHOW GRANTS FOR 'cloudsqlsuperuser'@'%'; but there is no SYSTEM VARIABLE ADMIN and SESSION VARIABLE ADMIN permission. I also tried to grant it via root login but it is giving me the same error.

[ms4446]

The issue you're encountering stems from the limited administrative capabilities available to users in Google Cloud SQL. Even the cloudsqlsuperuser role in Google Cloud SQL does not possess all privileges that a true MySQL root user would have, particularly SYSTEM_VARIABLES_ADMIN and SESSION_VARIABLES_ADMIN. This is due to the managed nature of Google Cloud SQL, which restricts certain high-level administrative operations to protect the managed environment. To address this issue, you have a few options:

Option 1: Modify Procedures to Avoid Needing Elevated Privileges

Examine and modify your stored procedures to avoid using statements that require SYSTEM_VARIABLES_ADMIN or SESSION_VARIABLES_ADMIN privileges. This might be the most straightforward solution if the required operations can be performed without needing elevated privileges. Ensure you have sufficient privileges (such as ALTER ROUTINE) to modify these procedures.

Option 2: Use Workarounds for System Variable Changes

If your procedures need to modify system variables, consider making these changes at a session level rather than globally. Session-level changes might not require elevated privileges:

SET SESSION max_connections = 1000;

Option 3: Consult Google Cloud Support

Given the managed nature of Google Cloud SQL, if you cannot modify your procedures to avoid needing these privileges, it might be necessary to consult Google Cloud Support for advice specific to your use case. They can provide guidance or potentially adjust configurations in ways that are not directly available to users. Be aware that any workarounds they provide could potentially introduce security vulnerabilities if not implemented carefully.

Option 4: Reevaluate Database Architecture

If modifying the procedures and consulting support do not yield a solution, reevaluate your database architecture and consider if certain tasks requiring high-level administrative privileges can be performed outside of the managed Cloud SQL environment. This might involve using a self-managed MySQL instance on a Compute Engine VM, where you have full administrative control. Keep in mind that this approach comes with potential downsides like increased operational overhead and potential security implications compared to a managed solution.