PRTG Manual: SSH SAN System Health Sensor

Metric

Select the metrics that you want to monitor. PRTG creates one sensor for each metric that you select.

Enable check boxes in front of the respective lines to select the items. Use the check box in the table header to select all items or to cancel the selection. In large tables, use the search function in the upper-right corner.

Sensor Name

Enter a name to identify the sensor. By default, PRTG shows this name in the device tree, as well as in alarms, logs, notifications, reports, maps, libraries, and tickets.

If the name contains angle brackets (<>), PRTG replaces them with braces ({}) for security reasons. For more information, see the Knowledge Base: What security features does PRTG include?

Parent Tags

Shows tags that the sensor inherits from its parent device, parent group, and parent probe.

This setting is for your information only. You cannot change it.

Tags

Enter one or more tags. Confirm each tag with the Spacebar key, a comma, or the Enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case-sensitive. Tags are automatically inherited.

It is not possible to enter tags with a leading plus (+) or minus (-) sign, nor tags with parentheses (()) or angle brackets (<>).

For performance reasons, it can take some minutes until you can filter for new tags that you added.

The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:

• sshsansystemhealth
• sshsan
• systemhealth

Priority

Select a priority for the sensor. This setting determines the position of the sensor in lists. The highest priority is at the top of a list. Choose from the lowest priority () to the highest priority ().

Metric

Shows the metric that this sensor monitors.

PRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.

Monitoring Mode

Define how the sensor requests data from the target device:

• Automatic detection: Automatically detect the firmware version and use the appropriate mode. We recommend that you use this option and only explicitly define the firmware date if errors occur.
• Firmware before June 2015: Use the mode that is appropriate for firmware versions before June 2015.
• Firmware as of June 2015: Use the mode that is appropriate for firmware versions as of June 2015.

The required mode depends on the firmware version of the target device. The sensor automatically detects the firmware version and uses the appropriate mode in most cases. If errors occur, explicitly define the firmware version.

We recommend that you use the default value.

Connection Timeout (Sec.)

Define a timeout in seconds for the connection. This is the time that the sensor waits to establish a connection to the host. Keep this value as low as possible. Enter an integer.

This sensor has a fixed timeout of 300 seconds. If you change the value, it does not have an effect on the timeout.

Ensure that the connection timeout is a value that is higher than the shell timeout to avoid potential errors.

Shell Timeout (Sec.)

Define a timeout in seconds for the shell response. This is the time in seconds the sensor waits for the shell to return a response after it has sent its specific command (for example, cat /proc/loadavg). The maximum value is 300 seconds (5 minutes). Enter an integer.

This sensor has a fixed timeout of 300 seconds. If you change the value, it does not have an effect on the timeout.

Ensure that the shell timeout is a value that is lower than the connection timeout to avoid potential errors.

SSH Port

Define which port this sensor uses for the SSH connection:

• Inherit port number from parent device (default): Use the port number as defined in the Credentials for Linux/Solaris/macOS (SSH/WBEM) Systems section of the parent device settings.
• Enter custom port number: Define a custom port number below and do not use the port number from the parent device settings.

Use Port Number

This setting is only visible if you select Enter custom port number above. Enter the port number (between 1 and 65535) that this sensor uses for the SSH connection. Enter an integer.

SSH Engine

Select the SSH engine that you want to use to access data with this SSH sensor. Choose between:

• Inherit from parent device (default): Use the SSH engine that you defined in the parent device settings or higher up in the object hierarchy. If you have not changed the SSH engine, this is the recommended option.
• Default: This is the default SSH engine. It provides the best performance and security. It is set by default in objects that are higher up in the hierarchy, so usually you can keep the Inherit from parent device (default) option.
• Compatibility mode (deprecated): Use this only if the default SSH engine does not work on a target device. The compatibility mode is the SSH engine that PRTG used in previous versions. It is deprecated. We will remove this legacy mode soon, so try to get your SSH sensors to run with the default SSH engine.

We strongly recommend that you use the default SSH engine.

The option you select here overrides the selection of the SSH engine in a higher object: a parent device, group, probe, or root.

Result Handling

Define what PRTG does with the sensor result:

• Discard result: Do not store the sensor result.

• Store result: Store the last sensor result in the \Logs\sensors subfolder of the PRTG data directory on the probe system. The file names are Result of Sensor [ID].txt, Result of Sensor [ID].Data.txt, and Result of Sensor [ID] (SSHv2).txt. This setting is for debugging purposes. PRTG overwrites these files with each scanning interval.

• Store result in case of error: Store the last sensor result only if the sensor shows the Down status.

This option is not available when the sensor runs on the hosted probe of a PRTG Hosted Monitor instance.

In a cluster, PRTG stores the result in the PRTG data directory of the master node.

Primary Channel

Select a channel from the list to define it as the primary channel. In the device tree, the last value of the primary channel is always displayed below the sensor's name. The available options depend on what channels are available for this sensor.

You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab.

Graph Type

Define how different channels are shown for this sensor:

• Show channels independently (default): Show a graph for each channel.
• Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic.
  You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).

Stack Unit

This setting is only visible if you enable Stack channels on top of each other as Graph Type. Select a unit from the list. All channels with this unit are stacked on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Capacitor Cell [#] Voltage [Controller]

The capacitor cell voltage

Capacitor Cell [#] Voltage [Controller] Status

The capacitor cell voltage status

• Up status: Ok
• Warning status: Warning
• Down status: Error, Unavailable, Unknown, Unrecoverable
• Unknown status: Not Installed, Unsupported

Capacitor Pack Voltage [Controller]

The capacitor pack voltage

Capacitor Pack Voltage [Controller] Status

The capacitor pack voltage status

• Up status: Ok
• Warning status: Warning
• Down status: Error, Unavailable, Unknown, Unrecoverable
• Unknown status: Not Installed, Unsupported

Disk Controller Temp [Controller]

The disk controller temperature

Disk Controller Temp [Controller] Status

The disk controller temperature status

• Up status: Ok
• Warning status: Warning
• Down status: Error, Unavailable, Unknown, Unrecoverable
• Unknown status: Not Installed, Unsupported

Downtime

In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status

Overall Unit Status

The overall unit status

• Up status: Ok
• Warning status: Warning
• Down status: Error, Unavailable, Unknown, Unrecoverable
• Unknown status: Not Installed, Unsupported

Memory Controller Temp [Controller]

The memory controller temperature

Memory Controller Temp [Controller] Status

The memory controller temperature status

• Up status: Ok
• Warning status: Warning
• Down status: Error, Unavailable, Unknown, Unrecoverable
• Unknown status: Not Installed, Unsupported

On-Board Temperature [Controller]

The on-board temperature

On-Board Temperature [Controller] Status

The on-board temperature status

• Up status: Ok
• Warning status: Warning
• Down status: Error, Unavailable, Unknown, Unrecoverable
• Unknown status: Not Installed, Unsupported