Update upgrade_db.sh

README.md

@@ -16,7 +16,7 @@
 - According to their needs can to install memcached, redis
 - According to their needs can to optimize MySQL and Nginx with jemalloc or tcmalloc
 - Add a virtual host script provided
-- Nginx/Tengine, PHP, Redis, phpMyAdmin upgrade script provided
+- Nginx/Tengine, MySQL/MariaDB/Percona, PHP, Redis, phpMyAdmin upgrade script provided
 - Add backup script provided
 
 ## How to use 

functions/upgrade_db.sh

@@ -156,6 +156,7 @@ $EXE_LINKER
 		[ ! -d "$db_install_dir" ] && mkdir -p $db_install_dir
                 mkdir -p $db_data_dir;chown mysql.mysql -R $db_data_dir
 		make install
+		cd ..
 		$db_install_dir/scripts/mysql_install_db --user=mysql --basedir=$db_install_dir --datadir=$db_data_dir
                 chown mysql.mysql -R $db_data_dir
                 service mysqld start
@@ -208,6 +209,7 @@ $EXE_LINKER
                 [ ! -d "$db_install_dir" ] && mkdir -p $db_install_dir
                 mkdir -p $db_data_dir;chown mysql.mysql -R $db_data_dir
                 make install
+		cd ..
 		$db_install_dir/scripts/mysql_install_db --user=mysql --basedir=$db_install_dir --datadir=$db_data_dir
                 chown mysql.mysql -R $db_data_dir
                 service mysqld start