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4.14 How to configure Hostname Detection

There are cases where detecting or resolving the hostname of the received log messages is important. By default, scribbler can detect the hostname using the operating system’s default DNS configuration.

However, that can be overridden and customized as per customer needs.

Procedure​

  1. In the navigation pane, go to Configuration > Log Processing

    Image Description

  2. Enable – Resolve Hostnames a. Enables the host name detection using the operating system default DNS and hosts file configuration. b. This is the default setting.

  3. Enable - Use Custom DNS a. Enables custom DNS servers to perform reverse DNS lookup to get the hostnames. This overrides the operating system configured DNS servers. b. Multiple DNS server IP addresses can be provided as comma separated values. c. DNS entries are cached locally for performance reasons. Any newly added mapping in the DNS server will take minimum of 15 minutes to get reflected in scribbler.

  4. Enable – Custom Hostname Prefix Processing a. When enabled, and if the system is unable to detect the hostname for an IP, it adds a prefix to the ip address. b. Will be handy when a default station / project / office name to be added when there is no mapping or DNS resolve happened for the specific IP address.

  5. Enable – Custom Hostname Mapping a. When enabled and custom IP hostname mappings provided. The system will check this configuration first before performing any name resolution. b. The IP addresses should be unique c. The hostname should be a valid hostname or a FQDN