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How-To: Configure IPSentry for redundant monitoring.
IPSentry provides the built in capability of being remotely monitored by another installation of IPSentry to make sure that the application is running.
The logic used behind this is quite simple.
IPSentry installed on two machines (Master & Secondary)
The Master will be the the installation that performs monitoring of your network devices.
The Secondary will simply monitor the Master to make sure it is functioning.
In the simplest terms, you will be turning on a feature and creating a device entry within the IPSentry machine list to cross-monitor the two applications.
In order to accomplish this, you must first install IPSentry on two different machines that are accessible to each other over TCP/IP on the port numbers defined using the below procedures (we will use port 6767 as an example).
The following steps will apply to configuration on both IPSentry systems.
Enabling the feature.
From the IPSentry active display console,
select Options from the Edit menu.
On the Remote Access tab under System
Settings, make sure that Respond on Local Port is checked.
Set the port # field to 6767
Press OK to save the changes.
IPSentry must be restarted for this change
to become active since IPSentry opens the port for listening upon startup.
Utilizing the feature
From the IPSentry active display console,
select Options from the Edit menu.
Click on the Server/Machine Monitoring tab.
Click ADD to being adding a new device to
monitor.
Under --TYPE--, select Network
Set the following fields:
Name: {unique descriptive name}
Desc: {meaningful description - IPSentry Backup / Master}
IP Address: The address of the other IPSentry machine.
Port: 6767
Data To Send: ^
Data To Recv: IPSentry
Timeout: 10
The remainder of the fields and alert options will be up to you.
Now, when the IPSentry cycle checks this device and it fails, you will be notified via the alert options you have specified for this device. If IPSentry is not running or either IPSentry monitoring system is down, you will be aware that your network is not being monitored and that you should take action to correct the problem.
Note: We recommend setting the "First After" alert schedule value to '2' since IPSentry could possibly be in the middle of an activity that may not allow it to respond within the time frame specified in step 5 above.
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