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# MariaDB Installation Fixes
## Issues Fixed
### 1. MariaDB-server-compat Package Conflict
**Problem**: `MariaDB-server-compat-12.1.2-1.el9.noarch` was conflicting with MariaDB 10.11 installation, causing transaction test errors.
**Solution**:
- Enhanced compat package removal with multiple aggressive removal attempts
- Added `--allowerasing` flag to dnf remove commands
- Added dnf exclude configuration to prevent compat package reinstallation
- Verification step to ensure all compat packages are removed before installation
**Files Modified**:
- `cyberpanel-repo/plogical/upgrade.py` - `fix_almalinux9_mariadb()` function
- `cyberpanel-repo/install/install.py` - `installMySQL()` function
### 2. MySQL Command Not Found Error
**Problem**: After MariaDB installation failed, the `changeMYSQLRootPassword()` function tried to use the `mysql` command which didn't exist, causing `FileNotFoundError`.
**Solution**:
- Added verification that MariaDB binaries exist before attempting password change
- Added check for mysql/mariadb command availability
- Added MariaDB service status verification before password change
- Added wait time for MariaDB to be ready after service start
**Files Modified**:
- `cyberpanel-repo/install/install.py` - `changeMYSQLRootPassword()` function
- `cyberpanel-repo/install/install.py` - `installMySQL()` function
### 3. MariaDB Installation Verification
**Problem**: Installation was proceeding even when MariaDB wasn't actually installed successfully.
**Solution**:
- Added binary existence check after installation
- Added service status verification
- Added proper error handling and return values
- Installation now fails gracefully if MariaDB wasn't installed
**Files Modified**:
- `cyberpanel-repo/plogical/upgrade.py` - `fix_almalinux9_mariadb()` function
- `cyberpanel-repo/install/install.py` - `installMySQL()` function
## Changes Made
### upgrade.py
1. **Enhanced compat package removal**:
- Multiple removal attempts (dnf remove, rpm -e, individual package removal)
- Added `--allowerasing` flag
- Added dnf exclude configuration
- Verification step
2. **Improved MariaDB installation**:
- Added `--exclude='MariaDB-server-compat*'` to dnf install command
- Added fallback with `--allowerasing` if conflicts occur
- Added binary existence verification after installation
- Proper error handling and return values
### install.py
1. **Enhanced compat package removal** (same as upgrade.py)
2. **Improved installation verification**:
- Check for MariaDB binaries after installation
- Verify service is running before password change
- Added wait time for service to be ready
- Proper error handling
3. **Improved password change function**:
- Verify mysql/mariadb command exists before attempting password change
- Better error messages
- Graceful failure handling
## Testing Recommendations
1. Test on clean AlmaLinux 9 system
2. Test with existing MariaDB-server-compat package installed
3. Test with MariaDB 10.x already installed
4. Test with MariaDB 12.x already installed
5. Verify MariaDB service starts correctly
6. Verify mysql/mariadb commands are available
7. Verify password change succeeds
## Notes
- The fixes maintain backward compatibility
- All changes include proper error handling
- Installation now fails gracefully with clear error messages
- Compat package removal is more aggressive to handle edge cases