This is the Configure Server window for Chronograf, the InfluxDB dashboard:

Chronograf accepts inbound connections from any appropriately configured client. It is configured by default to allow all connections without authentication, so entries here will limit connections to only those clients running on the machine on which Chronograf is running.
The computer name or IP address of the computer running Chronograf and the DataHub program.
The port that has been opened to accept incoming Chronograf client connections.

Chronograf connects to Influx DB using the URL, user name, and password specified here.
Kapacitor is a data processing engine for InfluxDB that can used for streaming analytics and anomaly detection.

The URL, user name, and password for Kapacitor can be entered or edited here.

The name of the Chronograf database file. The string
{config} will be replaced with the DataHub
configuration folder, and {install} with the DataHub
installation folder
Specify the severity level of messages that Chronograf should write to its log file.