# Estar seguro que yum esta actualizado
$ yum update yum
# Instalar yum-utils (que proporciona yum-config-manager)
$ yum install yum-utils
# Backup: dump todas las databases a all_dbs.sql
$ mysqldump --lock-all-tables --all-databases -u root -p >/root/all_dbs.sql
# Detener MySQL
$ service mysqld stop
# Descargar la ultima versión de MySQL para CentOS 6
$ wget https://dev.mysql.com/get/mysql80-community-release-el6-2.noarch.rpm $ sudo rpm -Uvh mysql80-community-release-el6-2.noarch.rpm $ yum repolist all | grep mysql $ sudo yum-config-manager --enable mysql57-community $ sudo yum-config-manager --disable mysql80-community $ yum update mysql
# Iniciar MySQL
$ service mysqld start
# Si obtiene algún error, debe eliminar las variables obsoletas en /etc/my.cnf
Para este paso se necesita ejecutar el siguiente comando:
$ mysqld --help --verbose | head -n13 mysqld Ver 8.0.16 for Linux on x86_64 (MySQL Community Server - GPL) Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Starts the MySQL database server. Usage: mysqld [OPTIONS] Default options are read from the following files in the given order: /etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf
Con este comando te mostrara los errores que tiene my.cnf, como variables obsoletas entre otros.
# Actualizar databases existentes
$ mysql_upgrade -u root -p
# Pruebas:
$ mysql -v Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 460 Server version: 5.7.25 MySQL Community Server (GPL) Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Reading history-file /root/.mysql_history Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
