You can reset an instance password if you forget the password, need to change the password, or have not set a password.
Log on to the Memcache console.
Locate the target instance, click the instance ID or Manage to enter the Instance Information page.
Click the Change Password button in the upper right corner.
On the Change Password page, enter the old password and the new password and click OK if you want to change the old password.
If you forget your password, click Forgot Password in the Change Password window. Then you can set a new password in the Reset Password window.
The password must consist of 8 to 30 characters, including upper-case letters, lower-case letters, and digits at the same time.