mysql 通过客户端执行now()函数，时差为8小时

news2024/9/29 9:36:43

1.场景演示

假设当前北京时间是：2023-02-17 19:31:37。明显执行出来的结果和实际时间晚8小时。
所用Mysql版本为：

解决方式：
需要在my.conf文件中的[mysqld]下添加

default-time-zone=Asia/Shanghai

由于这个mysql8.0是通过 docker 安装的，当时配置文件采用的是挂载的方式。所以不需要进入mysql容器内修改配置。修改挂载文件就行。修改完重启容器会自动同步到mysql容器内。
查看mysql 容器挂载目录：

最右侧的那一列是容器名：此次我们需要修改配置的是名为mysql8.0的mysql容器。

[root@iZ2Aeffpfo87fi4m4dlxo8dZ conf]# docker inspect mysql8.0 | grep Mounts -A 24
        "Mounts": [
            {
                "Type": "bind",
                "Source": "/mysql8.0/conf",
                "Destination": "/etc/mysql",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/mysql8.0/data",
                "Destination": "/var/lib/mysql",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            },
            {
                "Type": "bind",
                "Source": "/mysql8.0/logs",
                "Destination": "/var/log/mysql",
                "Mode": "",
                "RW": true,
                "Propagation": "rprivate"
            }

根据查询可以知道挂载目录在/mysql8.0/conf下

[root@iZ0zafdax87fw9m4dlx78dZ conf]# vim my.cnf

[mysqld]
default-time-zone=Asia/Shanghai #添加这一行
user=mysql
bind-address=0.0.0.0
character-set-server=utf8
default_authentication_plugin=mysql_native_password
secure_file_priv=/var/lib/mysql
expire_logs_days=7
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
max_connections=1000
lower_case_table_names=1
[client]
default-character-set=utf8

[mysql]
default-character-set=utf8