mysql升级物理升级

mysql升级是经常要做的工作，整理下升级步骤（物理升级）
1，关闭MysqL服务
2，高版本软件覆盖低版本软件（替换掉basedir）
3，赋予新的高版本软件MysqL权限
4，使用新的软件开启数据库
5，执行MysqL_upgrade升级
实验：
5.6.23升级到5.7.12
1，关闭正在运行的MysqL5.6.23的服务
2，删除低版本的MysqL软件（basedir）
[root@MysqLupgrade MysqL]# rm -rf MysqL/
3，解压高版本的MysqL软件包，覆盖到原来的位置
[root@MysqLupgrade soft]# tar xzvf MysqL-5.7.12-linux-glibc2.5-x86_64.tar.gz -C /data/MysqL/
[root@MysqLupgrade MysqL]# mv MysqL-5.7.12-linux-glibc2.5-x86_64 MysqL
4，赋予权限
[root@MysqLupgrade MysqL]# chown -R MysqL:MysqL MysqL/
5，开启数据库
[root@MysqLupgrade MysqL]# bin/MysqLd_safe --ledir=/data/MysqL/MysqL/bin --user=MysqL &
6，进入数据库，查看当前版本
MysqL> select version();
+-----------+
| version() |
+-----------+
| 5.7.12    |
+-----------+
1 row in set (0.00 sec)
6，MysqL_upgrade升级
[root@MysqLupgrade MysqL]# bin/MysqL_upgrade  -udbauser -p123456 -h292.168.56.99 -P3306
MysqL_upgrade: [Warning] Using a password on the command line interface can be insecure.
Checking if update is needed.
Checking server version.
Running queries to upgrade MysqL server.
Checking system database.
MysqL.columns_priv                                 OK
MysqL.db                                           OK
MysqL.engine_cost                                  OK
MysqL.event                                        OK
MysqL.func                                         OK
MysqL.general_log                                  OK
MysqL.gtid_executed                                OK
MysqL.help_category                                OK
MysqL.help_keyword                                 OK
MysqL.help_relation                                OK
MysqL.help_topic                                   OK
MysqL.innodb_index_stats                           OK
MysqL.innodb_table_stats                           OK
MysqL.ndb_binlog_index                             OK
MysqL.plugin                                       OK
MysqL.proc                                         OK
MysqL.procs_priv                                   OK
MysqL.proxies_priv                                 OK
MysqL.server_cost                                  OK
MysqL.servers                                      OK
MysqL.slave_master_info                            OK
MysqL.slave_relay_log_info                         OK
MysqL.slave_worker_info                            OK
MysqL.slow_log                                     OK
MysqL.tables_priv                                  OK
MysqL.time_zone                                    OK
MysqL.time_zone_leap_second                        OK
MysqL.time_zone_name                               OK
MysqL.time_zone_transition                         OK
MysqL.time_zone_transition_type                    OK
MysqL.user                                         OK
Upgrading the sys schema.
Checking databases.
sys.sys_config                                     OK
Upgrade process completed successfully.
Checking if update is needed.
[root@MysqLupgrade MysqL]#

备注：
升级的时候报错
[root@MysqLupgrade MysqL]# /data/MysqL/MysqL/bin/MysqL_upgrade -udbauser -p123456
Warning: Using a password on the command line interface can be insecure.
Looking for 'MysqL' as: /data/MysqL/MysqL/bin/MysqL
Looking for 'MysqLcheck' as: /data/MysqL/MysqL/bin/MysqLcheck
Error: Failed while fetching Server version! Could be due to unauthorized access.
Fatal error: Upgrade Failed

MysqL -udbauser -p123abc456 -h292.168.56.99 -P3306
测试下这样 是否可以连上，必须要能连上才可以。