Immediate Preinstallation Failure Due to SSH Permission Disablement of User root

A failure message is displayed immediately after you run the ./ preinstall during the Configuring and Checking the Installation Environment.
Possible Causes:The Secure Shell (SSH) permission of user root may have been disabled for the sake of security on the server where FusionInsight HD is to be installed. The Linux OS allows user root to log in over SSH by default.Procedure:
This section uses one server as an example to show how to rectify the fault. The operations are the same for rectifying this fault on other servers.
1.Use PuTTY to log in to a server where FusionInsight HD is to be installed as user root.
2.Check whether the sshd_config file contains PermitRootLogin no. If the file contains PermitRootLogin no, the SSH permission of user root is disabled:cat /etc/ssh/sshd_config.If yes, go to 3.If no, the configuration failure is not caused by SSH permission disabling. Rectify this fault using other methods.
3.Change PermitRootLogin no contained in the sshd_config file to PermitRootLogin yes to enable the SSH permission of user root:vi /etc/ssh/sshd_config
4.Restart the SSH service:/etc/init.d/sshd restart

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