View Health Monitoring Information
A built-in mechanism monitors the health of the Data Aggregator and the Data Collector devices. Self-monitoring monitoring profiles determine the statistics that are discovered and polled for these devices. The discovered statistics are collected automatically.
A built-in mechanism monitors the health of the data aggregator and the data collector devices. Self-monitoring monitoring profiles determine the statistics that are discovered and polled for these devices. The discovered statistics are collected automatically.
Do not change or stop this self-monitoring.
As an administrator, you want to monitor your data aggregator and data collector items so that you can manage their performances proactively and you can perform capacity planning.
In this scenario, you will view the monitoring profiles that are associated with data aggregator and data collector self-monitoring. You will also view the components that are being monitored on the data aggregator device. This information helps you to understand how the health of these items is managed.
You will also create dynamic trend views, where you can view changes that are occurring on data aggregator over time. This information is useful when you are troubleshooting performance issues and performing capacity planning.
To view health monitoring information, follow these steps:
View Metric Families That Are Associated with Self-Monitoring
You can view the metric families that are related to the self-monitoring of the data aggregator and the data collector. You can also view the metrics within these metric families, which are used for polling the devices. This information helps you to gain an understanding of what types of data is collected and at what rates the data is collected. You can then understand how the health of these devices is managed. You will see this information in the view that you will create later in this scenario.
Follow these steps:
- Log in toNetOps Portalas an administrator.
- SelectAdministration, and click a data aggregator data source.TheData Aggregator Adminpages open.
- ClickMonitoring Profilesfrom theMonitoring Configurationmenu.
- Select each "DA Health (<Rate>)" monitoring profile individually and view the corresponding metric families on theMetric Familiestab.To view a description for each metric family, hover over it.
- Make a note of the metric families you see on theMetric Familiestab.
- ClickMetric Familiesfrom theMonitoring Configurationmenu.
- Find and select each metric family individually and view the specific metrics that are collected on theMetricstab.
View Monitored Components on the Data Aggregator
You can view which components are being monitored on the data aggregator. You can also view the polling status on the components. For example, for capacity planning purposes, you can see all of the data collector instances that are being monitored on the data aggregator instance.
Only data collector instances for the tenant that you are administering are displayed. In an enterprise environment, you will likely only use the default tenant workspace, and therefore will see all of the data collector instances.
Follow these steps:
- ClickMonitored Devicesfrom theMonitored Inventorymenu for a data aggregator data source.
- Expand theAll Data Aggregatorsfolder, and then select the data aggregator device.ThePolled Metric Familiestab shows the metric families that are associated with the data aggregator device.TheComponentstable for a given metric family shows the polling status on the discovered components.When new components are discovered on the self-monitoring metric family, the components are monitored automatically. Performing an "Update Metric Family" operation on a self-monitoring metric family will result in no change in the state of monitoring.
Create a Group
As an administrator, you can create a custom group to organize managed devices in
NetOps Portal. In this scenario, you create a group for the data aggregator device. The Data Aggregator device becomes the context for the view you will create in a later step.
Follow these steps:
- Log in toNetOps Portalas a user with the Administrator role.
- Hover overAdministration,Group Settings, and then clickGroups.TheManage Groupsdialog opens.
- To find a location for the new group, expand nodes in the Groups tree. Create the group under the All Groups node in the Groups tree, or within an existing custom or site group. You cannot add groups to system groups, which appear "locked" in the Groups tree.We recommend that you create this group under a node where only you have access rights.
- Right-click the node, and selectAdd Group.TheAdd Groupwindow opens. TheNewtab is selected by default.
- Enter "Data Aggregators" as the name of the group and optionally provide a description.
- SelectCustomfrom theGroup Typelist.
- ClickSave.The new group appears in theGroupstree.
- Select theData Aggregatorsgroup that you created.
- Click theItemstab in the right pane.
- ClickAdd ItemType.TheAdd Itemsdialog opens.The list of items refreshes to show items of the selected type that are available to add to the group. The available items depend on the item type, the data sources that are registered, and the items discovered.To see more pages of items, click the links below the list. Or use the Search field to search for an item in the list.
- Select the [email protected]ip_addressitem, and then clickAdd Items.
- ip_addressIndicates the IP address of the data aggregator device.
- ClickClose.TheAdd Itemsdialog closes. TheItemstab shows the [email protected]ip_addressdevice that you added. Synchronization with data aggregator can take up to 5 minutes to begin.
Create a Dashboard and View Relevant Information
Custom dashboards are useful for displaying data from a particular item or group of items. (
Itemcan be a device, component, or interface.) In this scenario, you want to display self-monitoring data on the data aggregator item. In particular, you want to look at the Polled Item Count metric, the SNMP Poll Failure Count metric, and the SNMP Request Count metric. By looking at this information, you can view any changes that are occurring over time. Use this information when troubleshooting performance issues and when you are performing capacity planning.
Follow these steps:
- Click theDashboardstab.TheAvailable Dashboardspage opens. Each view on the page corresponds to a menu.
- ClickAdd Dashboardnext to the menu where you want the new dashboard to appear.TheAdd Dashboardpage opens.
- Complete the following fields:
- Enter "Data Aggregator Health" in theMenu ItemandTitle fields.Dashboard
- (Optional) Select a layout template for the dashboard.Each layout treats the page as a table with rows and columns for views. The layout buttons indicate the number of views in each column and row on the page.Select your layout before you add the Dynamic Trend View. If you change the layout after you add a view, the views will be removed.
- ExpandDynamic Viewsin the left pane. Select and drag the Dynamic Trend View to the page layout, and drop the view where you want it to appear.
- To create two more Dynamic Trend Views, select the view, and then clickCopytwice.
- Add thePolled Item Countmetric to the first view. Add theSNMP Poll Failure Countmetric to the second view. Add theSNMP Request Countmetric to the third view. To add the metrics to the view, do the following steps:
- Select the Dynamic Trend View, and then clickEdit.
- If it is not already selected, selectDevicefrom theContext Typedrop-down box.
- For the title, enter "Polled Item Count" for the first view, "SNMP Poll Failure Count" for the second view, and "SNMP Request Count" for the third view.
- Keep the default,Multitrend, as the View Type.
- Select theDA Data Collector Polling Statisticsmetric family for each view.It can take a few minutes for the available metric families to synchronize withNetOps Portal. If the self-monitor metric families are not immediately available, wait a few minutes and then try again.
- Select thePolled Item Count - Averagemetric value for the first dynamic trend view. Select theSNMP Poll Failure Count - Totalmetric value for the second view. Select theSNMP Request Count - Totalmetric value for the third view.
- Select theAdd Groupsradio button and then click theAdd/Remove Groupsbutton. Select theData Aggregatorsgroup that you created previously from the list of available groups, and then move it to the list of selected groups. ClickOK.
- View any changes that are occurring over time.For example:
- Polled item count increases when you werenotexpecting it to - Did you unintentionally start monitoring more items?
- Polled item count remains the same, but you see spikes in the SNMP Request Count occasionally - Do you have change detection turned on in one of your monitoring profiles or perhaps scheduled discoveries?
- Polled item count remains the same, but you see changes in the SNMP Poll Failure Count - Perhaps there has been a network outage.
- Polled item count increases and the SNMP Poll Failure Count increases - Perhaps the data collector is overloaded and cannot respond to all of the requests.