The Opsview Monitor agent runs directly on the monitored host and allows Opsview Monitor to run plugins on the host. It then passes the results back to the monitoring system. The advantage of the agent is that it has local access to many of the machine's resources and does not rely on exposed services or APIs. The Opsview Monitor agent is available for Windows and Linux systems. You can find a list of supported operating systems and download them.
Agentless checks run Opsview Monitor plugins on the Opsview Monitor system, which then query the host without the need for additional software to be installed on said host. These are normally designed for services that are available remotely like applications with an API, or technologies like Windows WMI or SNMP.
SNMP is most common on Network devices but is also available on other systems. Opsview Monitor is able to query SNMP devices with SNMP polls and accept SNMP traps, where the device then sends the SNMP data directly to Opsview Monitor.
Opsview comes with some pre-built SNMP Service Checks but can quickly and easily monitor many SNMP enabled devices by accepting a MIB file. This allows you to run an SNMP Walk to find all of the available data. Information on setting up SNMP traps can be found here.
Opsview's Business Service Monitoring (BSM) allows you to create groupings of hosts and services like Hashtags but take it further. BSM allows you to alert on the health of a service, rather than an individual Service Check. For example, if you have a database and a replica set up, the database service can still be considered OK if one of them fails, but CRITICAL if they both fail.
BSM allows you to easily see the overall status of your high-level services, giving a much broader view of your overall service status rather than just viewing individual host status. You can see the status of Business Services in the dedicated BSM view or using dashlets within the dashboards. Just like Hashtags, Business Service Monitoring can be used in the reporting module to generate reports. Since BSM understands the system dependencies and relationships, real SLA reports can be generated, no need for manual calculations.
Upgrades and Miscellaneous