MySQL 5.7.25主备架构小版本In-Place升级思

MySQL 5.7.25主备架构小版本In-Place升级思

一、描述 漏扫发现MySQL有低风险漏洞，自己写方案、自己做测试、自己升级。 版本：MySQL 5.7.25 升级到MySQL 5.7.28最新版本。 架构：主从架构

二、升级流程 1、下载最新版数据库软件MySQL 5.7.28 2、上传到指定目录 3、备份数据库软件、数据库数据目录、my.cnf 4、解压缩数据库软件到指定路径 5、关闭备库 6、使用新版软件启动备库，mysqld_safe & 7、登录备库，发现版本已升级，使用mysql_upgrade命令升级系统数据库 8、无报错的话，重启备库。 9、主库按照备库流程走一遍 10、最后确认主备库是否一致

三、部分内容 # mysql_upgrade -uroot -p 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   OK mysql.time_zone_transition_type                    OK mysql.user                                         OK Found outdated sys schema version 1.5.1. Upgrading the sys schema. Checking databases. sys.sys_config                                     OK Upgrade process completed successfully. Checking if update is needed.  mysql> status -------------- mysql  Ver 14.14 Distrib 5.7.28, for linux-glibc2.12 (x86_64) using  EditLine wrapper  Connection id:      2 Current database:    Current user:       root@localhost SSL:            Not in use Current pager:      stdout Using outfile:      '' Using delimiter:    ; Server version:     5.7.28-log MySQL Community Server (GPL) Protocol version:   10 Connection:     Localhost via UNIX socket Server characterset:    utf8mb4 Db     characterset:    utf8mb4 Client characterset:    utf8mb4 Conn.  characterset:    utf8mb4 UNIX socket:        /tmp/mysql.sock Uptime:         27 sec

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