This test scans the VDI logs for messages of configured patterns, and reports the count of errors/warnings that were recently logged in the files.

This page depicts the default parameters that need to be configured for the OraVdiAlertLogTest.

• The TEST PERIOD list box helps the user to decide how often this test needs to be executed. 

• Specify the path to the log file to be monitored in the LOGFILE text box. For eg., /user/john/new_john.log. Multiple log file paths can be provided as a comma-separated list - eg., /user/john/critical_egurkha.log,/tmp/log/major.log.

  Also, instead of a specific log file path, the path to the directory containing log files can be provided - eg., /user/logs. This ensures that eG Enterprise monitors the most recent log files in the specified directory. Specific log file name patterns can also be specified. For example, to monitor the latest log files with names containing the strings ‘dblogs’ and ‘applogs’, the parameter specification can be, /tmp/db/*dblogs*,/tmp/app/*applogs*. Here, ‘*’ indicates leading/trailing characters (as the case may be). In this case, the eG agent first enumerates all the log files in the specified path that match the given pattern, and then picks only the latest log file from the result set for monitoring.

  Your LOGFILE specification can also be of the following format: Name@logfilepath_or_pattern. Here, Name represents the display name of the path being configured. Accordingly, the parameter specification for the ‘dblogs’ and ‘applogs’ example discussed above can be: dblogs@/tmp/db/*dblogs*,applogs@/tmp/app/*applogs*. In this case, the display names ‘dblogs’ and ‘applogs’ will alone be displayed as descriptors of this test.

  Every time this test is executed, the eG agent verifies the following:

  • Whether any changes have occurred in the size and/or timestamp of the log files that were monitoring during the last measurement period;
  • Whether any new log files (that match the LOGFILE specification) have been newly added since the last measurement period;

  If a few lines have been added to a log file that was monitored previously, then the eG agent monitors the additions to that log file, and then proceeds to monitor newer log files (if any). If an older log file has been overwritten, then, the eG agent monitors this log file completely, and then proceeds to monitor the newer log files (if any).

• Enter the specific patterns of alerts to be monitored in the SEARCHPATTERN text box. The pattern should be in the following format: <PatternName>:<Pattern>, where <PatternName> is the pattern name that will be displayed in the monitor interface and <Pattern> is an expression of the form - *expr* or expr or *expr or expr*, etc. A leading ‘*’ signifies any number of leading characters, while a trailing ‘*’ signifies any number of trailing characters.

  For example, say you specify ORA:ORA-* in the SEARCHPATTERN text box. This indicates that “ORA” is the pattern name to be displayed in the monitor interface. “ORA-*” indicates that the test will monitor only those lines in the alert log which start with the term “ORA-”. Similarly, if your pattern specification reads: offline:*offline, then it means that the pattern name is offline and that the test will monitor those lines in the alert log which end with the term offline.

• The DD FREQUENCY refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD FREQUENCY.

• Once the necessary values have been provided, clicking on the UPDATE button will register the changes made.

When changing default configurations of tests, the values with "$" indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to "xyz" and $port will be changed to "80" when configuring a test.