Agent Checks Agent checks are commonly used to confirm that the agent is running and also to determine the version of the agent.   Nagios Plugins - NRPE Nagios Plugins are usually executed via NRPE on the remote system. Command: ./check_nrpe -H 10... Read More

CPU Usage Checks The examples in this KB article focus on CPU usage. If you are interested in Load checks please refer to the Load Checks KB article. The CPU Used - Percentage section of this KB article is the only one that contains check commands. Â... Read More

Disk Performance Checks Disk Performance checks allow you to monitor the input / output (IO) performance of the physical disks in your system. A physical disk is the block level device, depending on the agent and operating system (OS) you can monitor... Read More

Disk Space Checks Disk space checks vary depending on the following factors: Disk Free Space - Percentage Disk Free Space - Specific Value Disk Used Space - Percentage Disk Used Space - Specific Value The sections below provide examples of how to... Read More

File And Folder Checks File and Folder checks can help identify the following: File Count Files Size File Or Folder Exists File Modified Advanced NSClient++ Notes The sections below provide examples of how to perform these checks using different... Read More

Health Checks Health checks allow you to query different aspects of your system to be alerted of potential issues. A good example is checking the SMART attributes of a hard drive.   Permissions Some of these checks require elevated permissions, more... Read More

Load Checks A definition of load is required. Resource: Linux Manual Page - getloadavg(3) The getloadavg() function returns the number of processes in the system run queue averaged over various periods of time. Up to nelem samples are retrieved and... Read More

Log Checks Log checks allow you to query log files or Windows Event logs. Checking log files can be a system intensive process, especially if you have a large log file that is being checked every five minutes. A better solution is to send the log... Read More

Memory Checks Memory checks vary depending on the following factors: Memory Free - Percentage Memory Free - Specific Value Memory Used - Percentage Memory Used - Specific Value It is common for memory checks to be a combination of physical memory +... Read More

Network Interface Checks These checks are for the network interface cards (NIC) on the remote computer. Depending on your Operating System (OS) the NIC will be named differently, here are some examples: CentOS 6 = eth0 CentOS 7 = ens32 Windows =... Read More

Operating System Checks Operating System checks are used to provide information about the operating system the agent is running on.   Nagios Plugins - NRPE Nagios Plugins does not provide an operating system check. NCPA NPCA includes a system... Read More

Performance Counter Checks Performance Counter checks are specifically for the Windows operating system. A detailed explanation of performance counters can be found in the following KB article: What Is A Performance Counter The sections below provide... Read More

Printer Checks Printer checks allow you to query the status of printers and their supplies.   Nagios Plugins In you have a HP printer with a Jet Direct card then Nagios Plugins includes a check_hpjd plugin that can provide statistics on the printer... Read More

Process Checks Process checks can help identify the following: Process is running Process is NOT running Multiple separate processes Total running processes Process Resources The sections below provide examples of how to perform these checks using... Read More

Scheduled Task Checks Scheduled Task checks allow you to query the status of Windows Tasks.   Nagios Plugins Nagios Plugins does not include a way to check scheduled tasks. NCPA NPCA does not include a way to check scheduled tasks. NSClient++... Read More

Service or Daemon Checks Service or Daemon checks are system processes that run in the background, usually configured to start when the system boots. There are several different use cases covered in this KB article: Service - Started Service -... Read More

Uptime Checks Uptime checks can alert you to when a system has rebooted (or has not). The performance data returned can also help identify trends with systems that may be having issues. The sections below provide examples of how to perform these... Read More