Create db in utf-8 encoding
CREATE DATABASE <db_name> CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Recovery backup from archive
tar -xzOf <archive_name>.tar.gz | mysql -u root -p <db_name>
Dump and gzip
mysqldump -u root -ppasswod --all-databases | gzip > all.sql.gz
Restore from gz archive
gunzip < alldb.sql.gz | mysql -u [uname] -p[pass] [dbname]