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datadog-operator's Introduction

Datadog Operator

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Overview

The Datadog Operator aims to provide a new way of deploying the Datadog Agent on Kubernetes. Once deployed, the Datadog Operator provides:

  • Agent configuration validation that limits configuration mistakes.
  • Orchestration of creating/updating Datadog Agent resources.
  • Reporting of Agent configuration status in its Kubernetes CRD resource.
  • Optionally, use of an advanced DaemonSet deployment by leveraging the ExtendedDaemonSet.
  • Many other features to come :).

The Datadog Operator is RedHat certified and available on operatorhub.io.

Datadog Operator vs. Helm chart

You can also use official Datadog Helm chart or a DaemonSet to install the Datadog Agent on Kubernetes. However, using the Datadog Operator offers the following advantages:

  • The Operator has built-in defaults based on Datadog best practices.
  • Operator configuration is more flexible for future enhancements.
  • As a Kubernetes Operator, the Datadog Operator is treated as a first-class resource by the Kubernetes API.
  • Unlike the Helm chart, the Operator is included in the Kubernetes reconciliation loop.

Datadog fully supports using a DaemonSet to deploy the Agent, but manual DaemonSet configuration leaves significant room for error. Therefore, using a DaemonSet is not highly recommended.

Getting started

See the Getting Started dedicated documentation to learn how to deploy the Datadog operator and your first Agent, and Configuration to see examples, a list of all configuration keys, and default values.

Migrating from 0.8.x to 1.0.0

Operator 1.0.0 contains several changes users need to be aware of:

  • DatadogAgent CRD has two versions, v1alpha1 and v2alpha1. They are used as a stored version by Operator 0.8.x and 1.0.0 respectively. See this Kubernetes documentation page for more details about CRD versioning.
  • v1alpha1 and v2alpha1 are not backward or forward compatible. The Datadog Operator 1.0.0 implements a Conversion Webhook to migrate, though it only supports migrating from v1alpha1 to v2alpha1.
  • With the Conversion Webhook enabled, users can run 1.0.0 but continue applying a v1alpha1 manifest. However, they won't be able to retrieve the DatadogAgent manifest as a v1alpha1 object (see the previous item).
  • The Conversion Webhook requires a cert manager. See the migration guide in the public or helm chart documentation for more details.
  • 0.8.x managed PodDisruptionBudget for Cluster Agent and Cluster Checks Worker deployments. 1.0.0 doesn't, however this is on our roadmap.

Default Enabled Features

  • Cluster Agent
  • Admission Controller
  • Cluster Checks
  • Kubernetes Event Collection
  • Kubernetes State Core Check
  • Live Container Collection
  • Orchestrator Explorer
  • UnixDomainSocket transport for DogStatsD (and APM if enabled)
  • Process Discovery

Functionalities

The Datadog operator also allows you to:

How to contribute

See the How to Contribute page.

Release

Release process documentation is available here.

datadog-operator's People

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