Help Center/ Cloud Bastion Host/ FAQs/ Troubleshooting/ SSO O&M Faults/ Message "1251-Client does not support authentication protocol requested by server" Reported While Managing MySQL Database Through Host Operation
Updated on 2024-09-24 GMT+08:00
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Message "1251-Client does not support authentication protocol requested by server" Reported While Managing MySQL Database Through Host Operation

Symptoms

The message "1251-Client does not support authentication protocol requested by server" was reported while managing MySQL databases through host operation in a bastion host.

Possible Causes

The IP address of the bastion host may be restricted.

Solution

Log in to the database and run the following command to check whether the host value of the corresponding user restricts the IP address of the bastion host. If yes, remove the restriction. 
select * from user

You can log in to the bastion host and choose System > System Config > Network to check the IP address of the bastion host, or log in to the cloud console and check the IP address of the corresponding bastion host instance.

Parent topic: SSO O&M Faults