MySQL5.6.29升级到MySQL5.7.29

云飞扬

发布于 2022-01-05 15:39:04

7580

发布于 2022-01-05 15:39:04

文章被收录于专栏：星汉技术星汉技术

MySQL5.6.29升级到MySQL5.7.29

1 环境

系统环境为CentOS6.5，安装的MySQL版本为5.6.29，现在要将此版本升级为MySQL5.7.29。

1.1下载

在官方下载MySQL5.7.29的Linux的tar包。

下载地址：https://downloads.mysql.com/archives/community/

下载界面和所选内容如下图：

下载的文件为：mysql-5.7.29-1.el6.x86_64.rpm-bundle.tar

1.2 原始环境

进入现在的系统，进入mysql查看mysql的信息。

[root@hadoop ~] mysql –uroot –p #登录数据库
mysql> status #查看数据库状态

2 准备工作

2.1备份数据

停止MySQL服务

[root@hadoop ~]# service mysql stop
Shutting down MySQL.. SUCCESS!

将MySQL 5.6存储数据的目录进行备份，以防止升级过程中损坏。

2.1.1备份配置文件

首先查找配置文件，MySQL 5.6的配置文件默认位置在 /usr/my.conf

[root@hadoop ~]# cd /usr/
[root@hadoop usr]# ls
bin  etc  games  include  java  lib  lib64  libexec  local  my.cnf  sbin  share  src  tmp
[root@hadoop usr]#vim my.cnf
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
character_set_server=utf8
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

[root@hadoop usr]# mv my.cnf my.cnf.56 #改名做备份

上面的配置文件是现在的配置信息，其他都是默认选项，退出之后，将文件改名，因为升级之后，就不需要这个配置文件了，但是配置文件中的内容我们需要配置到新的配置文件中，所以在此处将原来的配置文件更改名称做备份使用。

2.1.2备份数据文件

MySQL 5.6的数据存储目录默认在：/var/lib/mysql目录中。如下命令，我们进入此目录查看一下其中的文件：

[root@hadoop usr]# cd /var/lib/mysql/
[root@hadoop mysql]# ls
auto.cnf    hive     ib_logfile0  mysql     RPM_UPGRADE_HISTORY      test
hadoop.err  ibdata1  ib_logfile1  performance_schema  RPM_UPGRADE_MARKER-LAST

上面展现的是我现在数据库中的额数据和一些配置文件。

返回上级目录使用如下命令将数据备份：

[root@hadoop lib]# cp -r mysql/ mysql_bak/ # 直接复制文件并改名即可

2.1.3备份日志文件

本人这里没有配置日志目录，所以没有日志输出，如果配置了日志目录，那么像上面一样备份一下即可。

2.2卸载原有版本

使用如下命令查看需要卸载的内容：

[root@hadoop ~]# rpm -qa|grep MySQL
MySQL-client-5.6.29-1.linux_glibc2.5.x86_64
MySQL-server-5.6.29-1.linux_glibc2.5.x86_64
[root@hadoop ~]# rpm -e MySQL-client-5.6.29-1.linux_glibc2.5.x86_64
[root@hadoop ~]# rpm -e MySQL-server-5.6.29-1.linux_glibc2.5.x86_64
[root@hadoop ~]# rpm -qa|grep MySQL
[root@hadoop ~]#

2.3上传TAR包

将刚刚下载的MySQL5.7的tar包，上传到自己规划的目录中，本人这里将其上传到了/home/software/mysql57。然后进行如下的操作：

[root@hadoop mysql57]# tar -xvf mysql-5.7.29-1.el6.x86_64.rpm-bundle.tar
mysql-community-libs-compat-5.7.29-1.el6.x86_64.rpm
mysql-community-common-5.7.29-1.el6.x86_64.rpm
mysql-community-devel-5.7.29-1.el6.x86_64.rpm
mysql-community-server-5.7.29-1.el6.x86_64.rpm
mysql-community-client-5.7.29-1.el6.x86_64.rpm
mysql-community-libs-5.7.29-1.el6.x86_64.rpm
mysql-community-test-5.7.29-1.el6.x86_64.rpm
mysql-community-embedded-5.7.29-1.el6.x86_64.rpm
mysql-community-embedded-devel-5.7.29-1.el6.x86_64.rpm

必选文件：

mysql-community-libs-5.7.29-1.el6.x86_64.rpm
mysql-community-common-5.7.29-1.el6.x86_64.rpm
mysql-community-server-5.7.29-1.el6.x86_64.rpm
mysql-community-client-5.7.29-1.el6.x86_64.rpm

其他为可选文件。

问题：

[root@hadoop mysql57]# tar -zxvf mysql-5.7.29-1.el6.x86_64.rpm-bundle.tar 

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now

将命令中的z选项去掉即可。有习惯带z的这个包不需要加z。

2.4安装依赖

解压完成之后，我们可以使用命令试探一下，如下：

[root@hadoop mysql57]# rpm -Uvh mysql-community-*.rpm
warning: mysql-community-client-5.7.29-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
	perl(JSON) is needed by mysql-community-test-5.7.29-1.el6.x86_64
	perl(Time::HiRes) is needed by mysql-community-test-5.7.29-1.el6.x86_64

缺少依赖。

使用如下命令，安装依赖

[root@hadoop mysql57]# yum -y install perl-JSON
[root@hadoop mysql57]# yum -y install perl-Time-HiRes

安装好依赖之后即可开始正式安装了。

3升级安装MYSQL

3.1升级安装

使用如下命令进行安装升级：

[root@hadoop mysql57]# rpm -Uvh mysql-community-*.rpm
warning: mysql-community-client-5.7.29-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                ########################################### [100%]
   1:mysql-community-common ########################################## [ 11%]
   2:mysql-community-libs   ########################################### [ 22%]
   3:mysql-community-client ########################################### [ 33%]
   4:mysql-community-server ########################################### [ 44%]
   5:mysql-community-devel  ########################################### [ 56%]
   6:mysql-community-embedde########################################## [ 67%]

其中server以下的是可选的，server包含server以上是必装的，这里我将所有的都进行了安装，不用去管安装顺序了，rpm自动给你进行了安装。如果需要分开安装，就按照上面列出的顺序去安装即可。

3.2目录

rpm安装mysql 默认安装目录信息如下：

数据库文件默认在：cd /usr/share/mysql
配置文件默认在：/etc/my.cnf
数据库目录：/var/lib/mysql/
相关命令：/usr/bin(mysqladmin、mysqldump等命令)(*mysql的一种安全启动方式：/usr/bin/mysqld_safe –user=root &)
启动脚本：/etc/rc.d/init.d/（启动脚本文件mysql的目录）

3.3启动

使用如下命令启动：

[root@hadoop mysql57]# service mysqld restart
停止 mysqld：                                              [确定]
MySQL Daemon failed to start.
正在启动 mysqld：                                          [失败]

注意：以上启动命令与MySQL5.6的已经不同了。

失败了，查看日志，日志目录为：/var/log/mysqld.log

2020-06-05T01:32:11.127912Z 0 [ERROR] Could not generate RSA private key required for X509 certificate.
2020-06-05T01:32:11.127938Z 0 [ERROR] Aborting

最主要的错误就是这两句，搞的我头晕目眩，整了好久才解决。在官网上有这么个介绍：

If you want to deploy the server with automatic support for secure connections, use the mysql_ssl_rsa_setup utility to create default SSL and RSA files:

bin/mysql_ssl_rsa_setup

For more information, see Section 4.4.5, “mysql_ssl_rsa_setup — Create SSL/RSA Files”.

官方网址：https://dev.mysql.com/doc/refman/5.7/en/data-directory-initialization.html

执行上面的命令即可解决问题，这个问题是X509，网上有一些重新创建公钥私钥文件的解决方法，本人测试过，针对这个问题是不管用的。

[root@hadoop mysql57]# mysql_ssl_rsa_setup
Generating a 2048 bit RSA private key
......................+++
........................+++
writing new private key to 'ca-key.pem'
-----
Generating a 2048 bit RSA private key
.........+++
.................................+++
writing new private key to 'server-key.pem'
-----
Generating a 2048 bit RSA private key
........................................................................................................................................+++
..................................+++
writing new private key to 'client-key.pem'
-----
[root@hadoop mysql57]# service mysqld restart
停止 mysqld：                                              [确定]
正在启动 mysqld：                                          [确定]

如上，再进行启动，就没有问题了。

登录看一下效果，登录的时候使用的还是原来的MySQL 5.6的账号和密码，用户和用户组也不用重新创建：

[root@hadoop mysql57]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.29 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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> status;
--------------
mysql  Ver 14.14 Distrib 5.7.29, for Linux (x86_64) using  EditLine wrapper

Connection id:		3
Current database:
Current user:		root@localhost
SSL:			Not in use
Current pager:		stdout
Using outfile:		''
Using delimiter:	;
Server version:		5.7.29 MySQL Community Server (GPL)
Protocol version:	10
Connection:		Localhost via UNIX socket
Server characterset:	latin1
Db     characterset:	latin1
Client characterset:	utf8
Conn.  characterset:	utf8
UNIX socket:		/var/lib/mysql/mysql.sock
Uptime:			1 min 26 sec

Threads: 1  Questions: 5  Slow queries: 0  Opens: 67  Flush tables: 1  Open tables: 60  Queries per second avg: 0.058
--------------

mysql>

3.4配置文件

MySQL5.7的配置文件在/etc/my.cnf，注意这个目录和MySQL 5.6的目录不同了，MySQL5.6的目录是/usr/my.cnf。

将之前备份的配置文件内容中的字符集拷贝过来即可。

[root@hadoop ~]# vim /etc/my.cnf
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
character_set_server=utf8
#以下为默认配置，以上为添加的默认字符编码集
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

保存退出之后，重新启动服务。

[root@hadoop ~]# service mysqld restart
停止 mysqld：                                              [确定]
正在启动 mysqld：                                          [确定]
[root@hadoop ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.29 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, 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> status; #查看状态
--------------
mysql  Ver 14.14 Distrib 5.7.29, for Linux (x86_64) using  EditLine wrapper

Connection id:		3
Current database:
Current user:		root@localhost
SSL:			Not in use
Current pager:		stdout
Using outfile:		''
Using delimiter:	;
Server version:		5.7.29 MySQL Community Server (GPL)
Protocol version:	10
Connection:		Localhost via UNIX socket
Server characterset:	utf8
Db     characterset:	utf8
Client characterset:	utf8
Conn.  characterset:	utf8
UNIX socket:		/var/lib/mysql/mysql.sock
Uptime:			20 sec

Threads: 1  Questions: 5  Slow queries: 0  Opens: 67  Flush tables: 1  Open tables: 60  Queries per second avg: 0.250
--------------

mysql>

3.5检查升级MYSQL表

此时升级之后的MySQL表是可以正常使用了，但是马上查看一下日志文件，会发现，如下这么多的错误：

2020-06-05T01:58:16.537443Z 0 [ERROR] Incorrect definition of table performance_schema.events_waits_current: expected column 'NESTING_EVENT_TYPE' at position 15 to have type enum('TRANSACTION','STATEMENT','STAGE','WAIT', found type enum('STATEMENT','STAGE','WAIT').
2020-06-05T01:58:16.537487Z 0 [ERROR] Incorrect definition of table performance_schema.events_waits_history: expected column 'NESTING_EVENT_TYPE' at position 15 to have type enum('TRANSACTION','STATEMENT','STAGE','WAIT', found type enum('STATEMENT','STAGE','WAIT').
2020-06-05T01:58:16.537526Z 0 [ERROR] Incorrect definition of table performance_schema.events_waits_history_long: expected column 'NESTING_EVENT_TYPE' at position 15 to have type enum('TRANSACTION','STATEMENT','STAGE','WAIT', found type enum('STATEMENT','STAGE','WAIT').
2020-06-05T01:58:16.537659Z 0 [ERROR] Incorrect definition of table performance_schema.events_waits_summary_by_user_by_event_name: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.537697Z 0 [ERROR] Incorrect definition of table performance_schema.events_waits_summary_by_account_by_event_name: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.538045Z 0 [ERROR] Column count of performance_schema.setup_actors is wrong. Expected 5, found 3. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538166Z 0 [ERROR] Incorrect definition of table performance_schema.setup_objects: expected column 'OBJECT_TYPE' at position 0 to have type enum('EVENT','FUNCTION','PROCEDURE','TABLE','TRIGGER', found type enum('TABLE').
2020-06-05T01:58:16.538387Z 0 [ERROR] Column count of performance_schema.table_lock_waits_summary_by_table is wrong. Expected 68, found 73. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538421Z 0 [ERROR] Column count of performance_schema.threads is wrong. Expected 17, found 14. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538454Z 0 [ERROR] Column count of performance_schema.events_stages_current is wrong. Expected 12, found 10. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538485Z 0 [ERROR] Column count of performance_schema.events_stages_history is wrong. Expected 12, found 10. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538519Z 0 [ERROR] Column count of performance_schema.events_stages_history_long is wrong. Expected 12, found 10. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538584Z 0 [ERROR] Incorrect definition of table performance_schema.events_stages_summary_by_account_by_event_name: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.538619Z 0 [ERROR] Incorrect definition of table performance_schema.events_stages_summary_by_user_by_event_name: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.538736Z 0 [ERROR] Column count of performance_schema.events_statements_current is wrong. Expected 41, found 40. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538788Z 0 [ERROR] Column count of performance_schema.events_statements_history is wrong. Expected 41, found 40. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538840Z 0 [ERROR] Column count of performance_schema.events_statements_history_long is wrong. Expected 41, found 40. Created with MySQL 50629, now running 50729. Please use mysql_upgrade to fix this error.
2020-06-05T01:58:16.538918Z 0 [ERROR] Incorrect definition of table performance_schema.events_statements_summary_by_account_by_event_name: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.538985Z 0 [ERROR] Incorrect definition of table performance_schema.events_statements_summary_by_user_by_event_name: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.539153Z 0 [ERROR] Native table 'performance_schema'.'events_statements_summary_by_program' has the wrong structure
2020-06-05T01:58:16.539171Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_current' has the wrong structure
2020-06-05T01:58:16.539185Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_history' has the wrong structure
2020-06-05T01:58:16.539199Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_history_long' has the wrong structure
2020-06-05T01:58:16.539216Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_summary_by_thread_by_event_name' has the wrong structure
2020-06-05T01:58:16.539231Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_summary_by_account_by_event_name' has the wrong structure
2020-06-05T01:58:16.539247Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_summary_by_user_by_event_name' has the wrong structure
2020-06-05T01:58:16.539262Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_summary_by_host_by_event_name' has the wrong structure
2020-06-05T01:58:16.539277Z 0 [ERROR] Native table 'performance_schema'.'events_transactions_summary_global_by_event_name' has the wrong structure
2020-06-05T01:58:16.539311Z 0 [ERROR] Incorrect definition of table performance_schema.users: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.539343Z 0 [ERROR] Incorrect definition of table performance_schema.accounts: expected column 'USER' at position 0 to have type char(32), found type char(16).
2020-06-05T01:58:16.539546Z 0 [ERROR] Native table 'performance_schema'.'memory_summary_global_by_event_name' has the wrong structure
2020-06-05T01:58:16.539563Z 0 [ERROR] Native table 'performance_schema'.'memory_summary_by_account_by_event_name' has the wrong structure
2020-06-05T01:58:16.539578Z 0 [ERROR] Native table 'performance_schema'.'memory_summary_by_host_by_event_name' has the wrong structure
2020-06-05T01:58:16.539594Z 0 [ERROR] Native table 'performance_schema'.'memory_summary_by_thread_by_event_name' has the wrong structure
2020-06-05T01:58:16.539609Z 0 [ERROR] Native table 'performance_schema'.'memory_summary_by_user_by_event_name' has the wrong structure
2020-06-05T01:58:16.539623Z 0 [ERROR] Native table 'performance_schema'.'table_handles' has the wrong structure
2020-06-05T01:58:16.539637Z 0 [ERROR] Native table 'performance_schema'.'metadata_locks' has the wrong structure
2020-06-05T01:58:16.539651Z 0 [ERROR] Native table 'performance_schema'.'replication_connection_configuration' has the wrong structure
2020-06-05T01:58:16.539665Z 0 [ERROR] Native table 'performance_schema'.'replication_group_members' has the wrong structure
2020-06-05T01:58:16.539679Z 0 [ERROR] Native table 'performance_schema'.'replication_connection_status' has the wrong structure
2020-06-05T01:58:16.539699Z 0 [ERROR] Native table 'performance_schema'.'replication_applier_configuration' has the wrong structure
2020-06-05T01:58:16.539713Z 0 [ERROR] Native table 'performance_schema'.'replication_applier_status' has the wrong structure
2020-06-05T01:58:16.539728Z 0 [ERROR] Native table 'performance_schema'.'replication_applier_status_by_coordinator' has the wrong structure
2020-06-05T01:58:16.539743Z 0 [ERROR] Native table 'performance_schema'.'replication_applier_status_by_worker' has the wrong structure
2020-06-05T01:58:16.539757Z 0 [ERROR] Native table 'performance_schema'.'replication_group_member_stats' has the wrong structure
2020-06-05T01:58:16.539771Z 0 [ERROR] Native table 'performance_schema'.'prepared_statements_instances' has the wrong structure
2020-06-05T01:58:16.539785Z 0 [ERROR] Native table 'performance_schema'.'user_variables_by_thread' has the wrong structure
2020-06-05T01:58:16.539798Z 0 [ERROR] Native table 'performance_schema'.'status_by_account' has the wrong structure
2020-06-05T01:58:16.539811Z 0 [ERROR] Native table 'performance_schema'.'status_by_host' has the wrong structure
2020-06-05T01:58:16.539825Z 0 [ERROR] Native table 'performance_schema'.'status_by_thread' has the wrong structure
2020-06-05T01:58:16.539838Z 0 [ERROR] Native table 'performance_schema'.'status_by_user' has the wrong structure
2020-06-05T01:58:16.539851Z 0 [ERROR] Native table 'performance_schema'.'global_status' has the wrong structure
2020-06-05T01:58:16.539864Z 0 [ERROR] Native table 'performance_schema'.'session_status' has the wrong structure
2020-06-05T01:58:16.539878Z 0 [ERROR] Native table 'performance_schema'.'variables_by_thread' has the wrong structure
2020-06-05T01:58:16.539892Z 0 [ERROR] Native table 'performance_schema'.'global_variables' has the wrong structure
2020-06-05T01:58:16.539906Z 0 [ERROR] Native table 'performance_schema'.'session_variables' has the wrong structure
2020-06-05T01:58:16.539962Z 0 [ERROR] Incorrect definition of table mysql.db: expected column 'User' at position 2 to have type char(32), found type char(16).
2020-06-05T01:58:16.539974Z 0 [ERROR] mysql.user has no `Event_priv` column at position 28
2020-06-05T01:58:16.540096Z 0 [ERROR] Event Scheduler: An error occurred when initializing system tables. Disabling the Event Scheduler.

使用如下命令，更新系统表文件即可解决：

[root@hadoop ~]# mysql_upgrade -p #检查命令
Enter password:
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.
hive.BUCKETING_COLS                                OK
hive.CDS                                           OK
hive.COLUMNS_V2                                    OK
hive.DATABASE_PARAMS                               OK
hive.DBS                                           OK
hive.DB_PRIVS                                      OK
hive.FUNCS                                         OK
hive.FUNC_RU                                       OK
hive.GLOBAL_PRIVS                                  OK
hive.PARTITIONS                                    OK
hive.PARTITION_KEYS                                OK
hive.PARTITION_KEY_VALS                            OK
hive.PARTITION_PARAMS                              OK
hive.PART_COL_STATS                                OK
hive.ROLES                                         OK
hive.SDS                                           OK
hive.SD_PARAMS                                     OK
hive.SEQUENCE_TABLE                                OK
hive.SERDES                                        OK
hive.SERDE_PARAMS                                  OK
hive.SKEWED_COL_NAMES                              OK
hive.SKEWED_COL_VALUE_LOC_MAP                      OK
hive.SKEWED_STRING_LIST                            OK
hive.SKEWED_STRING_LIST_VALUES                     OK
hive.SKEWED_VALUES                                 OK
hive.SORT_COLS                                     OK
hive.TABLE_PARAMS                                  OK
hive.TAB_COL_STATS                                 OK
hive.TBLS                                          OK
hive.VERSION                                       OK
sys.sys_config                                     OK
Upgrade process completed successfully.
Checking if update is needed.
[root@hadoop ~]# service mysqld restart
停止 mysqld：                                              [确定]
正在启动 mysqld：                                          [确定]
[root@hadoop ~]#

启动完成，再次查看日志文件，这时没有了任何错误。以上的错误是因为版本升级，系统文件不兼容导致的，只要升级一下这些文件即可，MySQL也提供了这个命令来升级这些文件。

每次升级MySQL时，都应执行 mysql_upgrade，以查找与已升级的MySQL服务器不兼容的情况：