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_cluster-monitoring.html.md.erb
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<% if vars.product_version == "COMMENTED" %>
<%# WARNING!!!! %>
<%# DO NOT ADD READBILITY LINE WRAPPING TO THIS CONTENT THE LONG LINES MUSt REMAIN TO CORRECTLY FORMAT THE FOLLOWING SECTION'S MARKDOWN CONTENT %>
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<% end %>
In **In-Cluster Monitoring**, you can configure one or more observability
components and integrations that run in Kubernetes clusters and capture logs
and metrics about your workloads.
For more information, see
[Monitoring Workers and Workloads](in-cluster-monitoring.html).
To configure in-cluster monitoring:
* To configure Wavefront, see [Wavefront](#wavefront).
<% if current_page.data.iaas == "vSphere" || current_page.data.iaas == "vSphere-NSX-T" %>
* To configure cAdvisor, see
[VMware vRealize Operations Management Pack for Container Monitoring](#realize).
<% else %>
* To configure cAdvisor, see [cAdvisor](#realize).
<% end %>
* To configure sink resources, see:
* [Metric Sink Resources](#metric-sinks)
* [Log Sink Resources](#log-sinks)
You can enable both log and metric sink resources or only one of them.
####<a id='wavefront'></a> Wavefront
You can monitor Kubernetes clusters and pods metrics externally using the integration with <a href="https://docs.wavefront.com">Wavefront by VMware</a>.
> **Note** Wavefront integration in TKGI has been deprecated.
**Prerequisites**
Before you configure Wavefront integration, you must have an active Wavefront account and access to a Wavefront instance. You provide your Wavefront access token during configuration.
For additional information, see the [Wavefront documentation](https://docs.wavefront.com/integrations_tkgi.html).
To use Wavefront with Windows worker-based clusters, developers must install Wavefront to their clusters manually, using Helm.
**Procedure**
To enable and configure Wavefront monitoring:
1. In the Tanzu Kubernetes Grid Integrated Edition tile, select **In-Cluster Monitoring**.
1. Under **Wavefront Integration**, select **Yes**.
1. Under **Wavefront URL**, enter the URL of your Wavefront subscription. For example:
```console
https://try.wavefront.com/api
```
1. Under **Wavefront Access Token**, enter the API token for your Wavefront subscription.
1. (Optional) For installations that require a proxy server for outbound Internet access, enable access by entering values for **HTTP Proxy Host**, **HTTP Proxy Port**, **Proxy username**, and **Proxy password**.
1. Click **Save**.
The Tanzu Kubernetes Grid Integrated Edition tile does not validate your Wavefront configuration settings. To verify your setup, look for cluster and pod metrics in Wavefront.
<% if current_page.data.iaas == "vSphere" || current_page.data.iaas == "vSphere-NSX-T" %>
####<a id='realize'></a> VMware vRealize Operations Management Pack for Container Monitoring
You can monitor Tanzu Kubernetes Grid Integrated Edition Kubernetes clusters with VMware vRealize Operations Management Pack for Container Monitoring.
To integrate Tanzu Kubernetes Grid Integrated Edition with VMware vRealize Operations Management Pack for Container Monitoring, you must deploy a container running [cAdvisor](https://github.com/google/cadvisor) in your TKGI deployment.
cAdvisor is an open source tool that provides monitoring and statistics for Kubernetes clusters.
To deploy a cAdvisor container:
1. Select **In-Cluster Monitoring**.
1. Under **Deploy cAdvisor**, select **Yes**.
1. Click **Save**.
For more information about integrating this type of monitoring with TKGI, see the [VMware vRealize Operations Management Pack for Container Monitoring User Guide](https://techdocs.broadcom.com/us/en/vmware-cis/aria/aria-operations-for-integrations/2-2/vrealize--operations-management-pack--for-pack-for-kubernetes-2-2/getting-started-with-vmware-aria-operations-management-pack-for-kubernetes.html) and [Release Notes](https://techdocs.broadcom.com/us/en/vmware-cis/aria/aria-operations/8-18/Chunk1503020612.html) in the VMware documentation.
<% else %>
####<a id='realize'></a> cAdvisor
cAdvisor is an open source tool for monitoring, analyzing, and exposing Kubernetes container resource usage and performance statistics.
To deploy a cAdvisor container:
1. Select **In-Cluster Monitoring**.
1. Under **Deploy cAdvisor**, select **Yes**.
1. Click **Save**.
<p class="note"><strong>Note:</strong> For information about configuring cAdvisor to monitor your running Kubernetes containers, see
<a href="https://github.com/google/cadvisor#cadvisor/">cAdvisor</a> in the cAdvisor GitHub repository.
For general information about Kubernetes cluster monitoring, see
<a href="https://kubernetes.io/docs/tasks/debug-application-cluster/resource-usage-monitoring/#resource-metrics-pipeline">Tools for Monitoring Resources</a>
in the Kubernetes documentation.</p>
<% end %>
####<a id='metric-sinks'></a> Metric Sink Resources
You can configure TKGI-provisioned clusters to send Kubernetes node metrics and
pod metrics to metric sinks. For more information about metric sink resources
and what to do after you enable them in the tile, see
[Sink Resources](in-cluster-monitoring.html#sinks) in
_Monitoring Workers and Workloads_.
To enable clusters to send Kubernetes node metrics and pod metrics to metric
sinks:
1. In **In-Cluster Monitoring**, select **Enable Metric Sink Resources**.
If you enable this check box, Tanzu Kubernetes Grid Integrated Edition deploys Telegraf as a
`DaemonSet`, a pod that runs on each worker node in all your Kubernetes clusters.
1. (Optional) To enable Node Exporter to send worker node metrics to metric
sinks of kind `ClusterMetricSink`, select **Enable node exporter on workers**.
If you enable this check box, Tanzu Kubernetes Grid Integrated Edition deploys Node Exporter as
a `DaemonSet`, a pod that runs on each worker node in all your Kubernetes
clusters.
For instructions on how to create a metric sink of kind `ClusterMetricSink`
for Node Exporter metrics, see
[Create a ClusterMetricSink Resource for Node Exporter Metrics](create-sinks.html#node-exporter) in _Creating and Managing Sink Resources_.
1. Click **Save**.
####<a id='log-sinks'></a> Log Sink Resources
You can configure TKGI-provisioned clusters to send Kubernetes API events and
pod logs to log sinks. For more information about log sink resources and what to
do after you enable them in the tile, see
[Sink Resources](in-cluster-monitoring.html#sinks) in
_Monitoring Workers and Workloads_.
To enable clusters to send Kubernetes API events and pod logs to log sinks:
1. Select **Enable Log Sink Resources**. If you enable this check box,
Tanzu Kubernetes Grid Integrated Edition deploys Fluent Bit as a `DaemonSet`, a pod that runs
on each worker node in all your Kubernetes clusters.
1. (Optional) To increase the Fluent Bit Pod memory limit, enter a value greater than 100 in the **Fluent-bit container memory limit(Mi)** field.
1. Click **Save**.