mysql版本升级
1 mysql小版本升级
本文档适用于rpm安装的mysql服务的小版本升级。例如从8.0.30升级至8.0.31。
1.1 确认版本信息
rpm -qa|grep mysql
mysql -V1.2 下载安装包
MySQL :: Download MySQL Community Server
以升级8.0.31为例，下载mysql-8.0.31-1.el7.x86_64.rpm-bundle.tar
1.3 解压
tar -xvf mysql-8.0.31-1.el7.x86_64.rpm-bundle.tar 1.4 逻辑备份数据库
mysqldump -u root -h host -p --all-databases > /data/backdb.sql1.5 停服务
service mysqld stop
systemctl stop mysqld1.5 备份数据库配置文件及数据文件
a、/etc/my.cnf（默认位置） 配置文件 b、/var/lib/mysql（默认位置） 数据文件，具体位置见配置文件
1.7 升级安装
[root@centos7 mysql8.0.31]# rpm -Uvh mysql-community-*
警告：mysql-community-client-8.0.31-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
准备中... ################################# [100%]
正在升级/安装...
1:mysql-community-common-8.0.31-1.e################################# [ 4%]
2:mysql-community-client-plugins-8.################################# [ 9%]
3:mysql-community-libs-8.0.31-1.el7################################# [ 13%]
4:mysql-community-client-8.0.31-1.e################################# [ 17%]
5:mysql-community-icu-data-files-8.################################# [ 22%]
6:mysql-community-server-8.0.31-1.e################################# [ 26%]
7:mysql-community-server-debug-8.0.################################# [ 30%]
8:mysql-community-test-8.0.31-1.el7################################# [ 35%]
9:mysql-community-devel-8.0.31-1.el################################# [ 39%]
10:mysql-community-libs-compat-8.0.3################################# [ 43%]
11:mysql-community-embedded-compat-8################################# [ 48%]
12:mysql-community-debuginfo-8.0.31-################################# [ 52%]
正在清理/删除...
13:mysql-community-devel-8.0.30-1.el################################# [ 57%]
14:mysql-community-debuginfo-8.0.30-################################# [ 61%]
15:mysql-community-server-debug-8.0.################################# [ 65%]
16:mysql-community-server-8.0.30-1.e################################# [ 70%]
17:mysql-community-client-8.0.30-1.e################################# [ 74%]
18:mysql-community-libs-compat-8.0.3################################# [ 78%]
19:mysql-community-libs-8.0.30-1.el7################################# [ 83%]
20:mysql-community-embedded-compat-8################################# [ 87%]
21:mysql-community-common-8.0.30-1.e################################# [ 91%]
22:mysql-community-icu-data-files-8.################################# [ 96%]
23:mysql-community-client-plugins-8.################################# [100%]7、确认新版本信息和数据完整性
[root@centos7 mysql8.0.31]# mysql -V
mysql Ver 8.0.31 for Linux on x86_64 (MySQL Community Server - GPL)
[root@centos7 mysql8.0.31]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 8.0.31 MySQL Community Server - GPL
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
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> 至此，升级完成。
2 mysql5.7升级至8.0（8.0.31）
2.1 下载rpm包和检测升级工具
[root@host mysql8]# ll
总用量 930212
-rw-r--r-- 1 root root 906106880 10月 28 09:52 mysql-8.0.31-1.el7.x86_64.rpm-bundle.tar
-rw-r--r-- 1 root root 46425904 10月 31 09:13 mysql-shell-8.0.31-1.el7.x86_64.rpm2.2 安装mysql-shell,检测数据库
#安装mysql-shell工具
[root@host mysql8]# rpm -ivh mysql-shell-8.0.31-1.el7.x86_64.rpm
警告：mysql-shell-8.0.31-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
准备中... ################################# [100%]
正在升级/安装...
1:mysql-shell-8.0.31-1.el7 ################################# [100%]
#执行升级检测
[root@host mysql8]# mysqlsh [email protected]:3306 -e 'util.checkForServerUpgrade();'
Please provide the password for '[email protected]:3306': *********
Save password for '[email protected]:3306'? [Y]es/[N]o/Ne[v]er (default No): Y
The MySQL server at 127.0.0.1:3306, version 5.7.38 - MySQL Community Server
(GPL), will now be checked for compatibility issues for upgrade to MySQL
8.0.31...
1) Usage of old temporal type
No issues found
2) MySQL 8.0 syntax check for routine-like objects
No issues found
3) Usage of db objects with names conflicting with new reserved keywords
No issues found
4) Usage of utf8mb3 charset
Warning: The following objects use the utf8mb3 character set. It is
recommended to convert them to use utf8mb4 instead, for improved Unicode
support.
More information:
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-utf8mb3.html
ocp_test - schema's default character set: utf8
ocp_test.t1.name - column's default character set: utf8
5) Table names in the mysql schema conflicting with new tables in 8.0
No issues found
6) Partitioned tables using engines with non native partitioning
No issues found
7) Foreign key constraint names longer than 64 characters
No issues found
8) Usage of obsolete MAXDB sql_mode flag
No issues found
9) Usage of obsolete sql_mode flags
Notice: The following DB objects have obsolete options persisted for
sql_mode, which will be cleared during upgrade to 8.0.
More information:
https://dev.mysql.com/doc/refman/8.0/en/mysql-nutshell.html#mysql-nutshell-removals
global system variable sql_mode - defined using obsolete NO_AUTO_CREATE_USER
option
10) ENUM/SET column definitions containing elements longer than 255 characters
No issues found
11) Usage of partitioned tables in shared tablespaces
No issues found
12) Circular directory references in tablespace data file paths
No issues found
13) Usage of removed functions
No issues found
14) Usage of removed GROUP BY ASC/DESC syntax
No issues found
15) Removed system variables for error logging to the system log configuration
To run this check requires full path to MySQL server configuration file to be specified at 'configPath' key of options dictionary
More information:
https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-13.html#mysqld-8-0-13-logging
16) Removed system variables
To run this check requires full path to MySQL server configuration file to be specified at 'configPath' key of options dictionary
More information:
https://dev.mysql.com/doc/refman/8.0/en/added-deprecated-removed.html#optvars-removed
17) System variables with new default values
To run this check requires full path to MySQL server configuration file to be specified at 'configPath' key of options dictionary
More information:
https://mysqlserverteam.com/new-defaults-in-mysql-8-0/
18) Zero Date, Datetime, and Timestamp values
No issues found
19) Schema inconsistencies resulting from file removal or corruption
No issues found
20) Tables recognized by InnoDB that belong to a different engine
No issues found
21) Issues reported by 'check table x for upgrade' command
No issues found
22) New default authentication plugin considerations
Warning: The new default authentication plugin 'caching_sha2_password' offers
more secure password hashing than previously used 'mysql_native_password'
(and consequent improved client connection authentication). However, it also
has compatibility implications that may affect existing MySQL installations.
If your MySQL installation must serve pre-8.0 clients and you encounter
compatibility issues after upgrading, the simplest way to address those
issues is to reconfigure the server to revert to the previous default
authentication plugin (mysql_native_password). For example, use these lines
in the server option file:
[mysqld]
default_authentication_plugin=mysql_native_password
However, the setting should be viewed as temporary, not as a long term or
permanent solution, because it causes new accounts created with the setting
in effect to forego the improved authentication security.
If you are using replication please take time to understand how the
authentication plugin changes may impact you.
More information:
https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password-compatibility-issues
https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html#upgrade-caching-sha2-password-replication
23) Columns which cannot have default values
No issues found
24) Check for invalid table names and schema names used in 5.7
No issues found
Errors: 0
Warnings: 3
Notices: 1
NOTE: No fatal errors were found that would prevent an upgrade, but some potential issues were detected. Please ensure that the reported issues are not significant before upgrading.注意：在以上检测中，检测到error为0就可以正常升级了。
2.3 字符集注意事项
#数据库字符集若是为UTF8则需要指定参数文件字符集，MySQL8.0默认UTF8mb4
vim /etc/my.cnf
[client]
default-character-set=utf8
...
[mysqld]
...
character-set-client-handshake = FALSE
character-set-server = utf8
collation-server = utf8_unicode_ci
init_connect='SET NAMES utf8'
...2.4 备份mysql,关闭MySQL实例
如果数据量不是非常大，建议同时做逻辑和物理备份。
#逻辑备份
[root@host mysql8]# mysqlpump -u root -p --all-databases > all-databases.sql
#物理备份
[root@host mysql8]# cp -r /var/lib/mysql /var/lib/mysql_5.7
[root@host mysql8]# systemctl stop mysqld2.5 卸载5.7rpm包
#检查原rpm包
[root@host mysql8]# rpm -qa |grep mysql -i
zabbix-proxy-mysql-6.2.3-release1.el7.x86_64
mysql-community-libs-compat-5.7.38-1.el7.x86_64
mysql-community-embedded-5.7.38-1.el7.x86_64
mysql-community-client-5.7.38-1.el7.x86_64
mysql-shell-8.0.31-1.el7.x86_64
mysql-community-test-5.7.38-1.el7.x86_64
perl-DBD-MySQL-4.023-6.el7.x86_64
mysql-community-devel-5.7.38-1.el7.x86_64
mysql-community-libs-5.7.38-1.el7.x86_64
mysql-community-embedded-compat-5.7.38-1.el7.x86_64
php-mysql-5.4.16-48.el7.x86_64
mysql-community-embedded-devel-5.7.38-1.el7.x86_64
mysql-community-server-5.7.38-1.el7.x86_64
mysql-community-common-5.7.38-1.el7.x86_64
#通过以上命令，可以检测出原rpm包是以mysql-community开头的所有包
#因涉及到多个依赖关系，在卸载是注意不要卸载依赖关系。使用以下命令，强制卸载且不破坏依赖
[root@host mysql8]# rpm -qa|grep mysql-community | xargs rpm -e --nodeps2.6 安装新版本rpm包
[root@host mysql8]# tar -xvf mysql-8.0.31-1.el7.x86_64.rpm-bundle.tar
#使用yum localinstall可以解决依赖问题
[root@host mysql8]# yum localinstall mysql-community-* -y2.7 启动myql，自动升级
[root@host mysql8]# systemctl start mysqld注意查看日志文件，检查是否升级成功。
2022-10-31T01:39:35.450377Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.31) starting as process 8355
2022-10-31T01:39:35.485825Z 1 [System] [MY-011012] [Server] Starting upgrade of data directory.
2022-10-31T01:39:35.485873Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2022-10-31T01:39:35.869312Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2022-10-31T01:39:36.193512Z 0 [Warning] [MY-013129] [Server] A message intended for a client cannot be sent there as no client-session is attached. Therefore, we're sending the information to the error-log instead: MY-001287 - 'validate password plugin' is deprecated and will be removed in a future release. Please use validate_password component instead
2022-10-31T01:39:36.634381Z 2 [System] [MY-011003] [Server] Finished populating Data Dictionary tables with data.
2022-10-31T01:39:37.090241Z 5 [System] [MY-013381] [Server] Server upgrade from '50700' to '80031' started.
2022-10-31T01:39:40.860985Z 5 [System] [MY-013381] [Server] Server upgrade from '50700' to '80031' completed.
2022-10-31T01:39:40.942099Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2022-10-31T01:39:40.942147Z 0 [System] [MY-013602] [Server] Channel mysql_main configured to support TLS. Encrypted connections are now supported for this channel.
2022-10-31T01:39:40.956032Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.31' socket: '/var/lib/mysql/mysql.sock' port: 3306 MySQL Community Server - GPL.
2022-10-31T01:39:40.956033Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Bind-address: '::' port: 33060, socket: /var/run/mysqld/mysqlx.sock2.8 确认新版本信息和数据完整性
[root@host ~]# mysql -V
mysql Ver 8.0.31 for Linux on x86_64 (MySQL Community Server - GPL)
[root@host ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 8.0.31 MySQL Community Server - GPL
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
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>