28.2 Monitoring Services on Target Nodes

This section guides you through the tasks involved in using the Monitoring Services facility.

From the console, you can monitor critical nodes on the network and manage potential connectivity problems before they affect the network. You define the services to test on the selected nodes, then view the test results and other data for each listed target. To perform the testing, complete the following general steps:

  1. Define the targets to be monitored.

    See Defining the Targets for Monitoring Services for information about specifying the services on the target nodes.

  2. On a per-node basis or on multiple nodes, change the test interval or timeout value.

    These tests use default values for the test interval between two successive tests on the target and to determine the time duration that the remote ping server waits to receive the response from the target node. You can change these values for the test.

    See Changing the Test Options for a Node for information about editing the test options.

  3. View the test results.

    The nodes are monitored continuously, at the defined test interval for the node. Depending on the Monitoring Services test that you choose, the corresponding test results are displayed.

    See Displaying Test Results Data for information about test results data.

28.2.1 Defining the Targets for Monitoring Services

Monitoring Services requires that you specify the targets for the tests. You can choose from the following test options:

NOTE:You can monitor approximately 50 critical services simultaneously on the servers. Monitoring more than 50 services may overload the server memory and result in performance degradation.

Test the Services on the Target Node One Time Only

If you suspect a problem with a node in the network, you can ping the node once for monitoring services. When you select the target node for testing the services and specify the IP or IPX address, this address will determine the service that will be tested at the node. For example, if you enter the IPX address, the default IPX service is tested on the target node.

The results of the test will display the status of the target node and details of the round trip delay in the Ping window.

To test the services on a node once:

  1. In Novell ConsoleOne, right-click the selected node, then click Ping.

  2. Enter the ping target details.

  3. Click OK.

Continuously Monitor the Services on the Target Nodes

To specify the services for continuous monitoring, add the targets and choose the services on the node and other options. The target node will be added to the list of targets in the Connectivity Test Results window and the test results data will be displayed. Monitoring of services continues until you close this window.

To define the targets for testing services on the node:

  1. In Novell ConsoleOne, click Action, then select Connectivity Test.

  2. Click Add.

  3. Specify the details for the target nodes in the Add Ping Target dialog box.

    Refer to Adding Services for Monitoring for more information about adding services.

  4. Click OK.

The target node will be added to the list of targets in the Connectivity Test Results window.

Continuously Poll the Services of the Target Nodes on a Segment Until the Test Is Disabled

For polling the services on the nodes of a segment, select the nodes on a segment with the list of services you want to test. Enable the test in the Monitor Tab Services window and view the results of the test in the Polling view.

If you do not disable the test, polling of the services continues after you close the console.

To define the services on the nodes for polling:

  1. In Novell ConsoleOne, right-click the node of a segment then click Properties, and then click the Monitor Services tab.

    The List of Segment dialog box displays the different addresses of the same node on different segments if the node is connected to more than one segment. Click the node on the segment that you want to add.

  2. Specify the details for the target nodes in the Monitor Services Tab window.

    Refer to Adding Services for Monitoring for more information about adding services.

  3. Click OK.

28.2.2 Displaying Test Results Data

After defining the services for testing on the target node, you can view the results from the console.

Depending on the test you choose, the test results are displayed in the corresponding window.

If you choose to test the services on the node one time only, the test results will be displayed in the Ping Status window of the Ping window. This target will not be tested in the Connectivity Test Results window.

If you choose to continuously monitor the services, the test continues until you close the window. You can view the results in the Connectivity Test window.

If you choose to continuously poll the services until you disable the test, you can view the test results in the Polling view.

The following test data is available when you monitor the services on the target nodes:

Ping Target: Name or address (IP or IPX) of the network device for which services are being tested.

Service: Monitored services that are being tested on the target.

Port: Port number that the service uses.

Status of the Target: Up Status means that the service is available on the node and can be reached from the remote ping server. Down Status means that the service is down and cannot be reached from the server.

RoundTrip Delay: Time interval (in milliseconds) between the instant the remote ping server sends the test packet to the target and the instant the response is received from the target.

Packets Sent: Number of packets sent from the remote ping server to the target node.

Packets Received: Number of packets received by the remote ping server from the target node.

Packets Lost: Number and percentage of packets lost during the testing of the target node.

Interval: Displays the test interval value, in seconds. This value determines the time duration between two successive tests on the target.

Timeout: Displays the timeout value, in milliseconds. This value determines the time duration that the remote ping server waits to receive the response from the target node.

To view the Connectivity Test Results window:

  1. Click File > Action > Connectivity Test from the Console.

    If you select one or more target nodes from the right pane of the console, the list of nodes that you want to test for connectivity will be shown in the Connectivity Test Results window.

To view the results of the polling:

  1. From the console, click a segment, then View > Polling. The result would also appear at the atlas level. Select any atlas, click View > Polling. You can use this option to view the status of all the nodes that you have added using the Monitor Services tab.

NOTE:To delete a target node from the list, from the Polling view, click the target node, then click Delete.

28.2.3 Changing the Test Options for a Node

You can modify the test options, such as the test interval and timeout options, that you set earlier on an individual node or on multiple nodes. To modify multiple nodes, click more than one node from the Connectivity Test Results window; the test options apply to all selected target nodes.

To view the Connectivity Test Results window:

  1. Click the target row from the Connectivity Test Results window, then click the Edit button.

  2. Enter values for the Ping Interval and Timeout.

  3. Click OK.

If you want to roll back to the default setting, click Apply Defaults.

28.2.4 Adding Services for Monitoring

Monitoring Services lets you test services on the nodes. If you need to test any TCP-based service that is not listed in the default services list, you add the details of the service when you are adding the targets.

You specify the name of the service in the Add Service dialog box. Ensure that the service name you add is a unique name. Also, you must specify the port number for the service.

You can add the details of the service under the following circumstances:

The services that you add are stored in a file on the server.