Книга: Windows Server 2012 R2 Storage, Security, & Networking Pocket Consultant

Monitoring a DNS server

Monitoring a DNS server

Windows Server 2012 R2 has built-in functionality for monitoring a DNS server. Monitoring is useful to ensure that DNS resolution is configured properly.

You can configure monitoring to occur manually or automatically by following these steps:

1. In the DNS Manager console, press and hold or right-click the server you want to configure, and then tap or click Properties.

2. Tap or click the Monitoring tab, shown in Figure 9-12. You can perform two types of tests. To test DNS resolution on the current server, select the A Simple Query Against This DNS Server check box. To test DNS resolution in the domain, select the A Recursive Query To Other DNS Servers check box.

FIGURE 9-12 Configure a DNS server for manual or automatic monitoring on the Monitoring tab.

3. You can perform a manual test by tapping or clicking Test Now. You can schedule the server for automatic monitoring by selecting th e Perform Automatic Testing At The Following Interval check box and then setting a time interval in seconds, minutes, or hours.

4. The Test Results panel shows the results of testing. You’ll receive a date and time stamp indicating when the test was performed and a result, such as Pass or Fail. Although a single failure might be the result of a temporary outage, multiple failures typically indicate a DNS resolution problem.

NOTE If all recursive query tests fail, the advanced server option Disable Recursion might be selected. Tap or click the Advanced tab and check the server options.

REAL WORLD If you’re actively troubleshooting a DNS problem, you might want to configure testing to occur every 10–15 seconds. This interval will provide a rapid succession of test results. If you’re monitoring DNS for problems as part of your daily administrative duties, you’ll want a longer time interval, such as two or three hours.

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