前言：由于安全扫描，漏洞问题需进行升级，实际这是个无底洞
环境
- CentOS 7
- MySQL 5.7.27 --> MySQL 5.7.34
采用的是 in-place 方式升级
MySQL升级
1.检查XA事务
# XA检查是否有值
mysql> XA RECOVER;
Empty set (0.00 sec)
# 若有值，则需要 COMMIT 或 ROLLBACK xid
mysql> XA COMMIT xid;
或
mysql> XA ROLLBACK xid;
2.完全关闭MySQL
mysql> SET GLOBAL innodb_fast_shutdown=0;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
[root@BDGatewayT ~]# service mysqld stop
Shutting down MySQL.... SUCCESS!
3.升级前备份数据文件
cd /app
cp -rp mysql_data/ mysql_data_20210623
4.升级 MySQL 二进制安装或软件包
cd /usr/local
lrwxrwxrwx. 1 root root 46 Nov 12 2019 mysql -> /usr/local/mysql-5.7.27-linux-glibc2.12-x86_64 -- 原来的软链
drwxr-xr-x. 9 root mysql 129 Nov 12 2019 mysql-5.7.27-linux-glibc2.12-x86_64
drwxr-xr-x 9 root root 129 Jun 24 14:58 mysql-5.7.34-linux-glibc2.12-x86_64
-rw-r--r-- 1 root root 665389778 Mar 26 14:43 mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz
-- 删除软链
rm -rf mysql
-- 重建软链
ln -s mysql-5.7.34-linux-glibc2.12-x86_64 mysql
lrwxrwxrwx 1 root root 35 Jun 24 15:16 mysql -> mysql-5.7.34-linux-glibc2.12-x86_64 -- 新的软链，链接到了 5.7.34 版本
drwxr-xr-x. 9 root mysql 129 Nov 12 2019 mysql-5.7.27-linux-glibc2.12-x86_64
drwxr-xr-x 9 root root 129 Jun 24 14:58 mysql-5.7.34-linux-glibc2.12-x86_64
-rw-r--r-- 1 root root 665389778 Mar 26 14:43 mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz
5.启动MySQL
service mysqld start
6.执行inplace升级
cd /usr/local/mysql/bin/
# mysql_upgrade -uroot -p
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
Found outdated sys schema version 1.5.1.
Upgrading the sys schema.
Checking databases.
gateway.g_api_dtl OK
gateway.g_api_group OK
gateway.g_app_authorization OK
gateway.g_app_dtl OK
gateway.g_gateway_ins OK
gateway.g_gray_release OK
gateway.g_secret_key OK
gateway.g_stream_controler OK
gateway.ms_account OK
gateway.ms_account_role_relation OK
gateway.ms_resource OK
gateway.ms_role OK
gateway.ms_role_resource_relation OK
gateway.ms_route OK
gateway.ms_variable OK
sys.sys_config OK
Upgrade process completed successfully.
Checking if update is needed.
7.关闭并重新启动
关闭并重新启动 MySQL 服务器以确保对系统表所做的任何更改生效
# service mysqld restart
Shutting down MySQL.... SUCCESS!
Starting MySQL.. SUCCESS!
一键升级脚本
需要修改配置文件中对应的信息，且脚本放在同一目录下
[root@initnode101 ~]# clear
[root@initnode101 ~]# cat upgrading_mysql_config.txt
# MySQL 所在的bin路径
mysql_bin_path=/usr/local/mysql/bin
# MySQL的root的密码
mysql_user_root=root
mysql_root_password=123456
# 新版本的二进制文件路径
mysql_new_version=/tmp/mysql-5.7.34-linux-glibc2.12-x86_64.tar.gz
# MySQL安装路径
mysql_base_local=/usr/local/
[root@initnode101 ~]# cat upgrading_mysql.sh
:<<!
描述：用于inplace升级MySQL小版本
脚本流程：
1.加载环境变量
2.验证变量
3.连接MySQL，设置慢关机
4.关闭MySQL
5.替换为新版的MySQL
6.升级
7.再次重启
!
#!/bin/bash
set -e
# ------------- 加载配置文件 --------------------------
## 已存在相同的环境变量，不进行加载
if [[ "$mysql_bin_path" = "" ]] && [[ "$mysql_root_password" = "" ]] && [[ "$mysql_new_version" = "" ]];then
echo "加载配置信息到环境变量"
source ./upgrading_mysql_config.txt
else
echo "[Error] 已存在相同的被使用的变量，请检查！"
exit 1
fi
# ---------------- 校验变量信息 ----------------------
## 判断所传路径或文件是否存在
if [ ! -d "$mysql_bin_path" ];then
echo "[Error] mysql_bin_path 路径不存在..."
exit 1
fi
if [ ! -d "$mysql_base_local" ];then
echo "[Error] mysql_base_local 路径不存在..."
exit 1
fi
if [ ! -f "$mysql_new_version" ];then
echo "[Error] mysql_new_version 文件不存在..."
exit 1
fi
# ------------ 配置免密 --------------
mysql_login(){
cat > /tmp/up.password << EOF
[client]
user=$mysql_user_root
password=$mysql_root_password
EOF
}
del_file(){
if [ -f /tmp/up.password ];then
rm -rf /tmp/up.password
fi
}
# 配置免密
mysql_login
# ---------- 查看XA事务 --------------------
## 查看XA事务
echo "查看XA事务..."
xa_count=`"$mysql_bin_path"/mysql --defaults-extra-file=/tmp/up.password -e"XA RECOVER"|grep -v "[Warning] Using a password"|wc -l`
if [[ "$xa_count" -gt 0 ]];then
echo "[Error] 存在未关闭XA事务，请确认！"
del_file
exit 1
fi
# ---------- 设置 innodb_fast_shutdown 参数 --------------------
echo "设置 innodb_fast_shutdown = 1 参数"
## 使用慢速关机，InnoDB在关机前执行完全清除和更改缓冲区合并，确保在版本之间的文件格式差异的情况下充分准备数据文件。
"$mysql_bin_path"/mysql --defaults-extra-file=/tmp/up.password -e"set global innodb_fast_shutdown = 0"
# 获取数据文件路径
base_dir=`"$mysql_bin_path"/mysql --defaults-extra-file=/tmp/up.password -e"show variables like 'datadir'"|grep datadir|awk -F ' ' '{print $2}'`
if [ $base_dir = '' ];then
echo "[Error] 数据文件路径有误！mysql 参数 basedir 没有获得对应的值。"
del_file
exit 1
fi
if [ ! -d "$base_dir" ];then
echo "[Error] MySQL 数据文件路径[$base_dir]不存在，请确认！"
del_file
exit 1
fi
# --------------- 关闭MySQL ------------------------------------
echo "关闭MySQL..."
"$mysql_bin_path"/mysqladmin --defaults-extra-file=/tmp/up.password shutdown
# ------------ 解压新版的MySQL到指定路径 -----------------------------
## 获取解压后的文件名称
tar_name=`echo ${mysql_new_version/\/tmp\//''}`
untar_name=`echo ${tar_name/".tar.gz"/''}`
echo $untar_name
echo $mysql_base_local$untar_name
# 解压新版本MySQL
if [ ! -d "$mysql_base_local$untar_name" ];then
echo "解压MySQL新版本文件..."
tar zxvf "$mysql_new_version" -C "$mysql_base_local"
else
echo "[Warning] 已存在被解压文件..."
fi
# ----------- 升级前备份下原数据文件 ----------------------
## 是否进行备份原数据文件[拷贝原data文件为bak]
while true
do
echo "是否需要将原数据文件 $base_dir 进行备份，备份前请先确认磁盘容量是否足够。请输入 [Y/N]"
read chooise
case $chooise in
Y | y)
echo "开始备份，请等待..."
cp -rp $base_dir ${base_dir%/*}.bak.`date '+%Y%m%d%H%M%S'`
echo "备份完成，备份文件名为 ${base_dir%/*}.bak.日期"
break
;;
N | n)
echo "跳过备份操作..."
break
;;
*)
echo "请输入正确的值！"
;;
esac
done
# ----------- 替换软链为新版的MySQL -----------------------
## 删除旧软链
cd $mysql_base_local
if [ -L mysql ];then
echo "删除旧软链..."
rm -rf mysql
else
echo "[Error] 不存在软链 mysql"
del_file
exit 1
fi
## 重建软链
echo "重建软链到新版本..."
ln -s $untar_name mysql
# 启动数据库
echo "启动数据库..."
service mysqld start
echo "进行inplace升级..."
"$mysql_bin_path"/mysql_upgrade --defaults-extra-file=/tmp/up.password
echo "升级完成需要再次重启下..."
service mysqld restart
# 清楚免密配置文件
del_file
