fail to open MySQL connection: [CDC:ErrMySQLConnectionError]Error 1298: Unknown or incorrect time zone: 'Asia/Shanghai'

2. Troubleshooting

# Login tidb and check the time zone
show variables like '%time_zone%';
+------------------+---------------+
| Variable_name    | Value         |
+------------------+---------------+
| system_time_zone | Asia/Shanghai |
| time_zone        | SYSTEM        |
+------------------+---------------+
# login mysql and check the time zone
show variables like '%time_zone%';
+------------------+--------+
| Variable_name    | Value  |
+------------------+--------+
| system_time_zone | CST    |
| time_zone        | SYSTEM |
+------------------+--------+

It can be found that the time zone of the upstream tidb is North America/USA, while the time zone of the downstream MySQL is CST

3. Solution

Method 1: load the time zone

mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root mysql -p

Method 2: write sink to upstream and downstream time zones

cdc cli changefeed create --sink-uri="mysql://user:password@mysql_ip:mysql_port/?time-zone=CST" --pd=http://pd_ip:pd_port