Figure 18-13: The DNS service log, viewed in the Logs pane of the Server app.
Troubleshooting by Using the Logs Pane
The Logs pane of the Server app gives you access to several dozen log files kept by the services in OS X Server. Log files act like a black box, recording what is going on all the time. Log files list software events and the time and date they occurred. Log files can catalog events, or list requests. Some log files list only errors, while others record all events.
Figure 18-13 shows the Logs pane of the Server app displaying a DNS service log. You choose which log to view in the pop-up menu in the lower left, which displays almost three dozen log files, arranged by service (such as calendar, contacts, and DNS). Some services have several log files. For example, Mail Server has seven logs for the various protocols it uses and security monitoring it performs. The system also has its own log.
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