Chapter 9. Monitoring project and application metrics using the Developer perspective

Procedure

1. Go to Observe to see the Dashboard, Metrics, Alerts, and Events for your project.

2. Optional: Use the Dashboard tab to see graphs depicting the following application metrics:

   • CPU usage
   • Memory usage
   • Bandwidth consumption
   • Network-related information such as the rate of transmitted and received packets and the rate of dropped packets.

   In the Dashboard tab, you can access the Kubernetes compute resources dashboards.

   Note

   In the Dashboard list, the Kubernetes / Compute Resources / Namespace (Pods) dashboard is selected by default.

   Use the following options to see further details:

   • Select a dashboard from the Dashboard list to see the filtered metrics. All dashboards produce additional sub-menus when selected, except Kubernetes / Compute Resources / Namespace (Pods).
   • Select an option from the Time Range list to determine the time frame for the data being captured.
   • Set a custom time range by selecting Custom time range from the Time Range list. You can input or select the From and To dates and times. Click Save to save the custom time range.
   • Select an option from the Refresh Interval list to determine the time period after which the data is refreshed.
   • Hover your cursor over the graphs to see specific details for your pod.
   • Click Inspect located in the upper-right corner of every graph to see any particular graph details. The graph details appear in the Metrics tab.

3. Optional: Use the Metrics tab to query for the required project metric.

   Figure 9.1. Monitoring metrics

   
   1. In the Select Query list, select an option to filter the required details for your project. The filtered metrics for all the application pods in your project are displayed in the graph. The pods in your project are also listed below.
   2. From the list of pods, clear the colored square boxes to remove the metrics for specific pods to further filter your query result.
   3. Click Show PromQL to see the Prometheus query. You can further modify this query with the help of prompts to customize the query and filter the metrics you want to see for that namespace.
   4. Use the drop-down list to set a time range for the data being displayed. You can click Reset Zoom to reset it to the default time range.
   5. Optional: In the Select Query list, select Custom Query to create a custom Prometheus query and filter relevant metrics.

4. Optional: Use the Alerts tab to do the following tasks:

   • See the rules that trigger alerts for the applications in your project.
   • Identify the alerts firing in the project.
   • Silence such alerts if required.

   Figure 9.2. Monitoring alerts

   

   Use the following options to see further details:

   • Use the Filter list to filter the alerts by their Alert State and Severity.
   • Click on an alert to go to the details page for that alert. In the Alerts Details page, you can click View Metrics to see the metrics for the alert.
   • Use the Notifications toggle adjoining an alert rule to silence all the alerts for that rule, and then select the duration for which the alerts will be silenced from the Silence for list. You must have the permissions to edit alerts to see the Notifications toggle.
   • Use the Options menu adjoining an alert rule to see the details of the alerting rule.

5. Optional: Use the Events tab to see the events for your project.

   Figure 9.3. Monitoring events

   

   You can filter the displayed events using the following options:

   • In the Resources list, select a resource to see events for that resource.
   • In the All Types list, select a type of event to see events relevant to that type.
   • Search for specific events using the Filter events by names or messages field.

1. In the Topology view, click the workload to see the workload details in the right panel.

2. Click the Observe tab to see the critical and warning alerts for the application; graphs for metrics, such as CPU, memory, and bandwidth usage; and all the events for the application.

   Note

   Only critical and warning alerts in the Firing state are displayed in the Topology view. Alerts in the Silenced, Pending and Not Firing states are not displayed.

   Figure 9.4. Monitoring application metrics

   
   1. Click the alert listed in the right panel to see the alert details in the Alert Details page.
   2. Click any of the charts to go to the Metrics tab to see the detailed metrics for the application.
   3. Click View monitoring dashboard to see the monitoring dashboard for that application.

Procedure

1. For a general overview of the image vulnerabilities, on the navigation panel of the Developer perspective, click Project to see the project dashboard.
2. Click Image Vulnerabilities in the Status section. The window that opens displays details such as Vulnerable Container Images and Fixable Container Images.

3. For a detailed vulnerabilities overview, click the Vulnerabilities tab on the project dashboard.

   1. To get more detail about an image, click its name.
   2. View the default graph with all types of vulnerabilities in the Details tab.
   3. Optional: Click the toggle button to view a specific type of vulnerability. For example, click App dependency to see vulnerabilities specific to application dependency.
   4. Optional: You can filter the list of vulnerabilities based on their Severity and Type or sort them by Severity, Package, Type, Source, Current Version, and Fixed in Version.

   5. Click a Vulnerability to get its associated details:

      • Base image vulnerabilities display information from a Red Hat Security Advisory (RHSA).
      • App dependency vulnerabilities display information from the Snyk security application.