Upgrade MySQL 5.1 to 5.69

Error indication schema There is something wrong with the structure of

But you can log in normally after trying to log in

And found that it is a new version

[root@upgrade-slave ~]# mysql -u root -p 
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.27-75.0-log Percona Server (GPL), Release 75.0, Revision 8bb53b6

Copyright (c) 2009-2015 Percona LLC and/or its affiliates
Copyright (c) 2000, 2015, 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.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> 

solve schema The method of structural error is to carry out upgrade

Conduct mysql_upgrade

Must be used when the instance is running upgrade

[root@upgrade-slave ~]# time mysql_upgrade -u root -p 
Enter password: 
Looking for 'mysql' as: mysql
Looking for 'mysqlcheck' as: mysqlcheck
Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/lib/mysql/mysql.sock' 
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/lib/mysql/mysql.sock' 
Warning: Using a password on the command line interface can be insecure.
mysql.columns_priv                                 OK
mysql.db                                           OK
mysql.event                                        OK
mysql.func                                         OK
mysql.general_log                                  OK
mysql.help_category                                OK
mysql.help_keyword                                 OK
mysql.help_relation                                OK
mysql.help_topic                                   OK
mysql.host                                         OK
mysql.ndb_binlog_index                             OK
mysql.plugin                                       OK
mysql.proc                                         OK
mysql.procs_priv                                   OK
mysql.servers                                      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
Running 'mysql_fix_privilege_tables'...
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/lib/mysql/mysql.sock' 
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/var/lib/mysql/mysql.sock' 
Warning: Using a password on the command line interface can be insecure.
huodongdb.delivered_emails                         OK
huodongdb.prepared_emails                          OK
testdb.space_diaries                               OK
...
...
feeddb.ux_order_stats                              OK
feeddb.ux_product_stats                            OK
feeddb.weight_changes                              OK
test.checksum                                      OK
OK

real	2m4.418s
user	0m0.049s
sys	0m0.038s
[root@upgrade-slave ~]# 

Repair completed