The DNS Statistics widget on the Dashboard provides member-specific statistics or zone-specific statistics. The widget displays the totals for each type of DNS response as well as a line graph that tracks the responses per second.
You can add a DNS Statistics widget to your Dashboard for the appliance acting as a Grid member. To configure the DNS Statistics widget, click the Configure icon and do the following:

• Click Select Member. In the Member Selector dialog box, choose the DNS Cache Acceleration Grid member to display statistics for all its zones.

The widget displays only the option that you selected on your subsequent logins. When you click Select Member, the widget displays the Select Member option only, when you log in again.

• Graph Configuration: Select which DNS messages you want to track in the Responses per Second graph.

  • Success: The number of successful queries.

  • NXDOMAIN: The number of queries for domain names that did not exist in the database.

  • Referral: The number of queries that became referrals. 

  • NXRRSET: The number of queries for domain names that did not have the requested records.

  • Failure: The number of queries that failed due to reasons other than nonexistent domain names or records in a domain.

  • Recursion: The number of recursive queries for which the name server sent queries to other name servers.

The widget displays the following information on three tabs:

• DNS Responses tab: Displays a pie chart and the total number of each type of message. If you enable DNS Cache Acceleration service on an appliance and if the appliance is active, then the data throughput from this service is displayed in this tab.

• Responses per Second tab: Displays a line graph that tracks the DNS responses received per second, within an hour. The displayed time is based on the time zone specified in the User Profile. If you enable the auto-detect time zone option in NIOS and Grid Manager cannot determine the browser time zone, the time is displayed in UTC format. You can mouse over the graph to display the coordinates of any point in the graph. If you enable the DNS Cache Acceleration service on Grid member that supports it, the data throughput from DNS Cache Acceleration service is displayed on this tab.

• Cache Hit Ratio tab: Displays a bar chart showing the cumulative cache hit ratio performance for the Grid DNS member. The widget measures BIND traffic cache hits, and combines with results from caching when the Grid member is a DNS Cache Acceleration appliance, or another caching server. The cache hit ratio (measured in percentage) is the total number of cache hits divided by the total number of cache lookups. The higher the ratio, the more effective the cache is at improving query performance. 

Reports for DNS Cache Acceleration Appliances

The DNS Cache Acceleration appliances display a list of predefined reports that you have selected when you set up your Grid or member reporting properties. You can modify user-defined reports, but you cannot modify or delete predefined reports or the search criteria of predefined reports.
To view all available reports, from the Reporting tab, select the Reports tab. The supported reports for DNS Cache Acceleration appliances are listed in the table. For information about how to create and manage user-defined reports, see the NIOS Documentation at docs.infoblox.com.