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Foglight for Container Management 6.3.0 - User Guide

Table of Contents

Understanding Foglight for Container Management

About Foglight for Container Management Architecture Sizing Your Monitored Environment

Foglight Management Server Requirements Kubernetes Agent Requirements Docker Swarm Agent Requirements

Getting Started

Kubernetes Agent Docker Swarm Agent

Creating and Activating Agent

Creating and Activating a Kubernetes Agent Creating and Activating a Docker Swarm Agent

Configuring data collection interval

Using Foglight for Container Management

Monitoring Kubernetes Clusters

Kubernetes Clusters Summary view

Monitoring Kubernetes Nodes

Kubernetes Nodes Summary view

Monitoring Kubernetes Workloads

Kubernetes Workloads Summary view

Monitoring Kubernetes Pods

Kubernetes Pods Summary view

Monitoring Kubernetes Other Components

Configurations Storage Load Balancer

Alarms Capacity Management Cost Optimizer

Settings

Monitoring Docker Containers

Docker Container Summary view

Monitoring Docker Hosts

Docker Host Summary view

Monitoring Docker Swarm Clusters

Docker Swarm Cluster Summary view

Monitoring Docker Swarm Services

Docker Swarm Service Summary view

Kubernetes analytics

Heatmap analytics Scatter Plot analytics

Docker Swarm analytics

Heatmap analytics Scatter Plot analytics

Domains and Object Groups

Domains Object Groups

Kubernetes metrics

Workloads metrics Container metrics Node metrics

Docker Swarm metrics

Container metrics

Health Check Usage

Health Check Usage

Modifying alarms and threshold values Customization

Kubernetes Docker Swarm

Health Check

Docker Container Status

This rule detects abnormal Container health status and fires alarm for different severity abnormal health status.

DockerContainer

Conditions and Severities


Conditions	Severity	Action
Container that is already stopped for abnormal reason.	Critical	Send email to Docker Swarm Administrator

Docker Container Status - Paused

This rule detects abnormal long-time paused Container and fires alarm for different severity abnormal health status.

DockerContainer

Conditions and Severities


Conditions	Severity	Action
Container paused for two continuous data submission periods.	Warning	None

Docker Service Status

This rule detects abnormal Docker Swarm Service health status and fires alarm for different severity abnormal health status.

Conditions and Severities


Conditions	Severity	Action
Missing some of the replicated task running for this service.	Critical	Send email to Docker Swarm Administrator

Docker Task Status

This rule detects abnormal Docker Swarm Task health status and fires alarm for different severity abnormal health status.

Conditions and Severities


Conditions	Severity	Action
Task that is in failed, orphaned or remove status.	Critical	Send email to Docker Swarm Administrator

Docker Task Status -- pending

This rule detects abnormal long-time pending Docker Swarm Task and fires alarm for different severity abnormal health status.

Conditions and Severities


Conditions	Severity	Action
Task that is in pending status for two continuous data submission periods.	Warning	None

Usage

Docker Swarm Container CPU Utilization

This rule detects abnormal CPU Utilization for Docker Swarm Containers, and fire alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities. This rule only works for those Containers that configures CPU limit.

DockerContainerCPU

Conditions and Severities


Conditions	Severity	Threshold (Registry Variable)*	Action
Container whose usage is about to reach the limit, the ration is above the value configured in fatal Threshold.	Fatal	Docker:ContainerCpuUtilizationFatal	Send email to Kubernetes Administrator
Pods whose usage is about to reach the limit, the ration is above the value configured in critical Threshold.	Critical	Docker:ContainerCpuUtilizationCritical	None
Pods whose usage is about to reach the limit, the ration is above the value configured in warning Threshold.	Warning	Docker:ContainerCpuUtilizationWarning	None

*Note: the unit is percentage.

Docker Swarm Container Memory Utilization

This rule detects abnormal Memory Utilization for Docker Swarm Containers, and fire alarm on different severities. It is disabled by default. You can customize it and enable it based on your different requirements. For more details about customization, refer to Customization . You can also change value of the registry variables or use your own value to change the threshold of each severities. This rule only works for those Containers that configures Memory limit.

DockerContainerMemory

Conditions and Severities


Conditions	Severity	Threshold (Registry Variable)*	Action
Container whose usage is about to reach the limit, the ration is above the value configured in fatal Threshold.	Fatal	Docker:ContainerMemoryUtilizationFatal	Send email to Kubernetes Administrator
Pods whose usage is about to reach the limit, the ration is above the value configured in critical Threshold.	Critical	Docker:ContainerMemoryUtilizationCritical	None
Pods whose usage is about to reach the limit, the ration is above the value configured in warning Threshold.	Warning	Docker:ContainerMemoryUtilizationWarning	None

*Note: the unit is percentage.

Modifying alarms and threshold values

Modifying alarms and threshold values


	IMPORTANT: Avoid editing rules in the Administration > Rules & Notifications > Rule Management dashboard. Default rules may be modified during regular software updates and your edits will be lost. Always use the Alarm Templates dashboard.

You can and should modify the thresholds associated with alarms to better suit your environment. If you find that alarms are firing for conditions that you consider to be acceptable, you can change the threshold values that trigger the alarm. You can also enable or disable severity levels to better suit your environment.

When a rule has severity levels, a Threshold section appears in the Alarm Settings tab showing the severity levels and bounds by agent. Many rules, such as Baseline rules, do not have severity levels and thresholds.

When editing thresholds, ensure that the new values make sense in context with the other threshold values. For most metrics, threshold values are set so that Warning < Critical < Fatal. However, in metrics where normal performance has a higher value, the threshold values are reversed: Warning > Critical > Fatal.

To change alarm status and threshold values:


	IMPORTANT: The procedure below is a summary. Refer to Viewing, Creating, and Managing Alarm Templates in the Foglight 6.0 User Guide for more information on editing alarm templates for more information on working with alarm templates.

1

In the Navigation panel, click Alarm Templates.

2

If you have previously configured an alarm template, select that template.

Otherwise, click the Factory Template to view the default rules. Duplicate the factory template to make an editable copy, selecting the appropriate domains.

3

Click the appropriate domain tab.

4

Scroll or search to find the alarm rule you want to edit. Click the rule to select it.

Edit the rules using the procedure described in Viewing, Creating, and Managing Alarm Templates in the Foglight 6.0 User Guide

Customization

To customize a rule, Rule Scope and Condition will be used frequently.

To access Rule Scope and Condition, do the following:

1

Under Dashboards, click Administration > Rules & Notifications > Rules, then click on the rule and select View and Edit.

2

Click Rule Editor on the Rule Detail popup dialog box. Then click Continue on the Confirm Edit Rule popup dialog box.

3

On the Rule Editor dashboard, Rule Scope can be located on the Rule Definition tab and Condition can be located on the Condition & Actions tab.

Figure 56. Rule Scope

Figure 57. Condition

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