SshMonitor

The SshMonitor tests the availability of an SSH service. During the poll, it attempts to connect on the specified port. If the connection request is successful, then the service is considered up. Optionally, the banner line the node provides may be parsed and compared against a pattern before the service is considered up.

SshMonitor vs. MinaSshMonitor

The SshMonitor only tests that the SSH port is accepting connections. The MinaSshMonitor also tests connecting and authenticating to a node via SSH.

Monitor facts

Class Name

org.opennms.netmgt.poller.monitors.SshMonitor

Configuration and Use

Table 1. Optional monitor-specific parameters for the SshMonitor
Parameter	Description	Default
banner	Regular expression to be matched against the service’s banner.	n/a
client-banner	The client banner that Meridian uses to identify itself to the node.	SSH-1.99-OpenNMS_1.5
match	Regular expression to match against the service’s banner. Deprecated, please use the banner parameter instead. Note that this parameter does take precedence over the banner parameter.	n/a
port	TCP port to which SSH connection is tried.	22
retry	Number of attempts to establish the SSH connection.	0

This monitor implements the Common Configuration Parameters.

Examples

Example uses CentOS/RHEL path name. For Debian/Ubuntu, use /var/lib/opennms/rrd/response.

Note that you must include the monitor section for each service in your definition.

<service name="SSH" interval="300000" user-defined="false" status="on">
  <parameter key="retry" value="1"/>
  <parameter key="banner" value="SSH"/>
  <parameter key="client-banner" value="OpenNMS poller"/>
  <parameter key="timeout" value="5000"/>
  <parameter key="rrd-repository" value="/opt/opennms/share/rrd/response"/>
  <parameter key="rrd-base-name" value="ssh"/>
  <parameter key="ds-name" value="ssh"/>
</service>

<monitor service="SSH" class-name="org.opennms.netmgt.poller.monitors.SshMonitor"/>