Can a URL be monitored without specifying a device?
Yes. A URL can be monitored without specifying a device using a Web Application Response Time (WebART) check.
-
-
When using WMI, do I have to give administrator privileges to the user account?
Not strictly speaking. It’s highly recommended when monitoring Windows servers to use a service account for the purposes of WMI management. While a Domain Administrator account is the easiest to use, it is possible to use a non-administrator user account by following the steps on our page Limiting WMI Permissions.
-
How do I use WMI management through a firewall?
OmniCenter monitors Windows using the WMI protocol, and sometimes SNMP on very old versions. The ports that will need to be opened across the firewall are the same as those required for any WMI access to Windows, namely TCP/135 and all high ports (1024-65535), unless you have modified the Windows…
-
When monitoring Windows services I get a “WMI: Generic failure” or “ERROR: Login to remote object” message. What’s wrong?
The error messages “ERROR: Login to remote object” or “ACCESS_DENIED” can occur when attempting to monitor Windows services using WMI or WBEM (in the Windows environment, these terms are used interchangeably). If you have ruled out the possibility that a username or password was not entered properly, there are two…
-
How do I monitor a cluster of Windows Servers?
This is confusing, because it is not a very straightforward situation. First lets get a high-level overview of how the clusters work. Usually there are two or more physical servers. Each running the cluster service and logically, if not physically, grouped together. Each server has its own network identity and…
-
Why does the last reboot time for a device listed in OmniCenter show a different time than the device itself does?
OmniCenter measures the last reboot time for a system by collecting data from the system.sysUptime MIB in MIB-2. This is an industry standard and widely supported method. The variable collected is defined as “The time (in hundredths of a second) since the network management portion of the system was last…
-
Does OmniCenter’s Looking Glass feature support non-Cisco network devices?
Yes. Any manufacturer with a working SSH or telnet interface is already supported, although there are no prebuilt commands for them. The Looking Glass Administration page (Administration → Tools → Looking Glass) allows you to add custom commands for any vendor. If the device type doesn’t appear in the list,…
-
Why is there a notification delay after an alarm recovers?
The alarms cleared icon shown in the incident view. OmniCenter 9 changed the behavior of some alarm notifications when it introduced the new incident management system. Now, when an alarm is no longer critical, rather than immediately returning to an OK state (and sending the related notifications), it enters what’s…
-
What is the best way to monitor a redundant firewall cluster?
See our page on Virtual IP Monitoring.
-
OmniCenter says my Cisco device configuration is not saved, but it is. What’s happening?
In certain cases, Cisco configurations may show as “Changed but not saved!” even though they have been saved, or not changed in a long time. This is caused by a quirk in the way Cisco counts time. OmniCenter uses SNMP to check configuration “save status” on Cisco devices. Cisco limits…