Configuring System Monitor
- 04 Apr 2022
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Configuring System Monitor
- Updated on 04 Apr 2022
- 4 Minutes to read
- Contributors
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Article Summary
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System Monitor allows for the monitoring, logging and alerting of system resources (CPU, Memory, Disk Usage) and Network statistics. This feature can be enabled or disabled and set to operate in either Debug or Normal mode.
Three Probes can be configured when System Monitor is enabled:
- System Probe is used to measure and report on CPU and memory usage as well as number of top level processes.
- Disk Probe is used to measure and report on disk usage.
- Network Probe is used to report statistics (packets sent/received, bytes sent/received) about currently active network devices. The Network Probe can only be used in Debug mode and does not have any threshold limits.
To enable the System Monitor and configure Probes
Access the page Debug ▶System Monitor.
The System Monitor General Settings page opens.Select the Enable check box to enable System Monitor.
Select the Mode and Output type.
In normal mode, logs of levels greater than or equal to "NOTICE" will display the probe parameters for which thresholds have been exceeded at the provided interval. In debug mode, logs of level "DEBUG" will display all probe parameters at every interval, whether thresholds have been exceeded or not.
Note: When configuring the System Monitor to be in Debug mode, the user needs to set the Syslog level to "DEBUG" (System ▶Agent ▶Syslog). If configuring the System Monitor to be in Normal mode, the user can set the Syslog level to either "NOTICE", "INFO" or "DEBUG". This ensures the System Monitor is able to successfully report the logs to Syslog.
Choose the Probe you want to enable by selecting the corresponding check box.
You can enable the System Probe, the Disk Probe and the Network Probe (which can only be used in Debug mode).Configure the Probe parameters then click Apply.
For more information on specific parameters, refer to the following table.
System Monitor (Debug ▶System Monitor)
General Settings
| Parameter | Description |
|---|---|
| Enable | Enable or disable the System Monitor feature. Default is Disable. |
| Mode | Configure the working mode: Debug or Normal. Default is Debug. |
| Output type | The only output type currently supported is syslog. |
System Probe
| Parameter | Description |
|---|---|
| Enable System Probe | Default is Enable. |
| Interval (in seconds) | Interval at which the probe will collect data. The range is 1– 60; the default is 10. |
| Critical CPU threshold (%) | The threshold for CPU load at which a critical alarm will be raised in normal mode. The range is 1–99; the default is 90. |
| Warning CPU threshold (%) | The threshold for CPU load at which a warning alarm will be raised in normal mode. The range is 1–99; the default is 70. |
| Critical Memory threshold (%) | The threshold for memory usage at which a critical alarm will be raised in normal mode. The range is 1–99; the default is 90. |
| Warning Memory threshold (%) | The threshold in percentage for memory usage at which a warning alarm will be raised in normal mode. The range is 1–99; the default is 70. |
| Number of top processes | The number of processes that are reported to the output interface. The range is 1–10; the default is 4. |
| Sort by | The criteria to sort the processes: Mem or CPU. The default is CPU. |
Disk Probe
| Parameter | Description |
|---|---|
| Enable Disk Probe | Default is Enable. |
| Interval (in seconds) | Interval at which the probe will collect data. The range is 1– 60; the default is 10. |
| Critical Usage threshold (%) | The threshold for disk space usage for which a critical alarm will be raised in normal mode. The range is 1–99; the default is 90. |
| Warning Usage threshold (%) | The threshold for disk space usage for which a warning alarm will be raised in normal mode. The range is 1–99; the default is 70. |
Network Probe
| Parameter | Description |
|---|---|
| Enable Network Probe | Default is Enable. |
| Interval (in seconds) | Interval at which the probe will collect data. The range is 1–60; the default is 10. |
Output information (Syslog)
The following example shows the values that are reported in the Syslog for the all three probes (Network, Disk and System).
Jan 2 07:07:36 G274-0469 sysmon[609]: NETWORK: frames[547,320] bytes[434479,31084]
Jan 2 07:07:36 G274-0469 sysmon[609]: DISK: /tmp 2.9% |/etc/accedian 10.5%
|/etc/accedian/history 0.0%
Jan 2 07:07:36 G274-0469 sysmon[609]: SYSTEM: MEM[77,45,8,0] loadavg[36,27,25] CPU
[68.0,22.7] webs[52.0*,0.8] portd[3.0,1.9] sysmond[2.0,0.3] eventd[1.0,0.3]
The information reported for the Network Probe represents:
NETWORK: frames [packets sent on all interfaces in current interval, packets received on all interfaces in current interval] bytes [sent on all interfaces in current interval, received on all interfaces in current interval].
The information reported for the Disk Probe represents:
DISK: disk1_name used in % | disk2_name used in % | disk3_name used in %.
The information reported for the System Probe represents:
SYSTEM: MEM [usage in MB, free in MB, cache in MB, free swap in MB] loadavg [utilization in 1m, utilization in 5m, utilization in 15m] CPU [cpu usage in this interval, use usage lifetime] process1 [% cpu*, RES memory in MB] process2 [% cpu, RES memory in MB] process3 [% cpu, RES memory in MB].
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