Docker Agent for Docker, containerd, and Podman

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Overview

The Datadog Docker Agent is the containerized version of the host Agent. The Docker Agent supports Docker, containerd, and Podman runtimes. The official Docker image is available on Docker Hub, GCR, and ECR-Public.

Docker Hub is subject to image pull rate limits. If you are not a Docker Hub customer, Datadog recommends that you update your Datadog Agent and Cluster Agent configuration to pull from GCR or ECR. For instructions, see Changing your container registry.

Images are available for 64-bit x86 and Arm v8 architectures.

ECR-PublicGCRDocker Hub
Agent v6+
docker pull public.ecr.aws/datadog/agent
Agent v6+
docker pull gcr.io/datadoghq/agent
Agent v6+
docker pull datadog/agent
Agent v5
docker pull public.ecr.aws/datadog/docker-dd-agent
Agent v5
docker pull gcr.io/datadoghq/docker-dd-agent
Agent v5
docker pull datadog/docker-dd-agent

The CLI commands on this page are for the Docker runtime. Replace docker with nerdctl for the containerd runtime, or podman for the Podman runtime.

Setup

If you haven’t installed the Docker Agent, follow the in-app installation instructions or see below. For supported versions, see the Agent documentation. Use the one-step install command. Replace <YOUR_DATADOG_API_KEY> with your Datadog API key, and <DATADOG_SITE> with .

docker run -d --cgroupns host --pid host --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> gcr.io/datadoghq/agent:7

For ECR-public:

docker run -d --cgroupns host --pid host --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> public.ecr.aws/datadog/agent:7

Note: If you’re using a different registry besides GCR or ECR-public, make sure to update the image.

Note: For some features provided by system-probe, including network monitoring, security agent, and oom_kill check, you must also mount the /etc/os-release file with -v /etc/os-release:/host/etc/os-release:ro. If your Linux distribution does not include an /etc/os-release file, mount the equivalent one provided, for example /etc/redhat-release or /etc/fedora-release.

For Amazon Linux < v2:

docker run -d --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> gcr.io/datadoghq/agent:7

For ECR-public:

docker run -d --cgroupns host --pid host --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> public.ecr.aws/datadog/agent:7

For Amazon Linux v2:

docker run -d --cgroupns host --pid host --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> gcr.io/datadoghq/agent:7

For ECR-public:

docker run -d --cgroupns host --pid host --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> public.ecr.aws/datadog/agent:7

The Datadog Agent is supported in Windows Server 2019 (LTSC) and Windows Server 2022 (LTSC).

docker run -d --name dd-agent -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<API_KEY> -v \\.\pipe\docker_engine:\\.\pipe\docker_engine gcr.io/datadoghq/agent

For ECR-Public:

docker run -d --name dd-agent -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<API_KEY> -v \\.\pipe\docker_engine:\\.\pipe\docker_engine public.ecr.aws/datadog/agent

(Optional) To run an unprivileged installation, add --group-add=<DOCKER_GROUP_ID> to the install command, for example:

docker run -d --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> gcr.io/datadoghq/agent:7 --group-add=<DOCKER_GROUP_ID>

For ECR-Public:

docker run -d --name dd-agent -v /var/run/docker.sock:/var/run/docker.sock:ro -v /proc/:/host/proc/:ro -v /sys/fs/cgroup/:/host/sys/fs/cgroup:ro -e DD_SITE=<DATADOG_SITE> -e DD_API_KEY=<DATADOG_API_KEY> public.ecr.aws/datadog/agent:7 --group-add=<DOCKER_GROUP_ID>

Note: For Docker Compose, see Compose and the Datadog Agent.

Integrations

Once the Agent is up and running, use Datadog’s Autodiscovery feature to collect metrics and logs automatically from your application containers.

Environment variables

The Agent’s main configuration file is datadog.yaml. For the Docker Agent, datadog.yaml configuration options are passed in with environment variables.

Global options

Env VariableDescription
DD_API_KEYYour Datadog API key (required).
DD_ENVSets the global env tag for all data emitted.
DD_HOSTNAMEHostname to use for metrics (if autodetection fails).
DD_HOSTNAME_FILEIn some environments, auto-detection of the hostname is not adequate, and you cannot set the value with environment variables. In these cases, you can use a file on the host to provide an appropriate value. If DD_HOSTNAME is set to a non-empty value, this option is ignored.
DD_TAGSHost tags separated by spaces. For example: key1:value1 key2:value2.
DD_SITEDestination site for your metrics, traces, and logs. Set your Datadog site to: . Defaults to datadoghq.com.
DD_DD_URLOptional setting to override the URL for metric submission.
DD_URL (6.36+/7.36+)Alias for DD_DD_URL. Ignored if DD_DD_URL is already set.
DD_CHECK_RUNNERSThe Agent runs all checks concurrently by default (default value = 4 runners). To run the checks sequentially, set the value to 1. If you need to run a high number of checks (or slow checks), the collector-queue component may fall behind and fail the health check. You can increase the number of runners to run checks in parallel.
DD_APM_ENABLEDEnables trace collection. Defaults to true. For more information about additional trace collection environment variables, see Tracing Docker Applications.
DD_LOGS_CONFIG_EXPECTED_TAGS_DURATIONIn some environments, the initial logs from hosts might not include the correct tags. If you’re missing tags on new hosts in your logs, include this environment variable and set it to "10m".

Proxy settings

Starting with Agent v6.4.0 (and v6.5.0 for the Trace Agent), you can override the Agent proxy settings with the following environment variables:

Env VariableDescription
DD_PROXY_HTTPAn HTTP URL to use as a proxy for http requests.
DD_PROXY_HTTPSAn HTTPS URL to use as a proxy for https requests.
DD_PROXY_NO_PROXYA space-separated list of URLs for which no proxy should be used.

For more information about proxy settings, see the Agent v6 Proxy documentation.

Optional collection Agents

Optional collection Agents are disabled by default for security or performance reasons. Use these environment variables to enable them:

Env VariableDescription
DD_APM_NON_LOCAL_TRAFFICAllow non-local traffic when tracing from other containers.
DD_LOGS_ENABLEDEnable log collection with the Logs Agent.
DD_PROCESS_CONFIG_PROCESS_COLLECTION_ENABLEDEnable live process collection with the Process Agent. The live container view is already enabled by default if the Docker socket is available.

DogStatsD (custom metrics)

Send custom metrics with the StatsD protocol:

Env VariableDescription
DD_DOGSTATSD_NON_LOCAL_TRAFFICListen to DogStatsD packets from other containers (required to send custom metrics).
DD_HISTOGRAM_PERCENTILESThe histogram percentiles to compute (separated by spaces). The default is 0.95.
DD_HISTOGRAM_AGGREGATESThe histogram aggregates to compute (separated by spaces). The default is “max median avg count”.
DD_DOGSTATSD_SOCKETPath to the unix socket to listen to. Must be in a rw mounted volume.
DD_DOGSTATSD_ORIGIN_DETECTIONEnable container detection and tagging for unix socket metrics.
DD_DOGSTATSD_TAGSAdditional tags to append to all metrics, events, and service checks received by this DogStatsD server, for example: "env:golden group:retrievers".
DD_USE_DOGSTATSDEnable or disable sending custom metrics from the DogStatsD library.
Learn more about DogStatsD over Unix Domain Sockets.

Tagging

As a best practice, Datadog recommends using unified service tagging when assigning tags.

Datadog automatically collects common tags from Docker, Kubernetes, ECS, Swarm, Mesos, Nomad, and Rancher. To extract even more tags, use the following options:

Env VariableDescription
DD_CONTAINER_LABELS_AS_TAGSExtract container labels. This env is equivalent to the old DD_DOCKER_LABELS_AS_TAGS env.
DD_CONTAINER_ENV_AS_TAGSExtract container environment variables. This env is equivalent to the old DD_DOCKER_ENV_AS_TAGS env.
DD_COLLECT_EC2_TAGSExtract custom EC2 tags without using the AWS integration.

See the Docker Tag Extraction documentation to learn more.

Using secret files

Integration credentials can be stored in Docker or Kubernetes secrets and used in Autodiscovery templates. For more information, see the Secrets Management documentation.

Ignore containers

Exclude containers from logs collection, metrics collection, and Autodiscovery. Datadog excludes Kubernetes and OpenShift pause containers by default. These allowlists and blocklists apply to Autodiscovery only; traces and DogStatsD are not affected. The value for these environment variables support regular expressions.

Env VariableDescription
DD_CONTAINER_INCLUDEAllowlist of containers to include (separated by spaces). Use .* to include all. For example: "image:image_name_1 image:image_name_2", image:.* When using ImageStreams inside OpenShift environments, use the container name instead of image. For example:“name:container_name_1 name:container_name_2”, name:.*
DD_CONTAINER_EXCLUDEBlocklist of containers to exclude (separated by spaces). Use .* to exclude all. For example: "image:image_name_3 image:image_name_4" (Note: This variable is only honored for Autodiscovery.), image:.*
DD_CONTAINER_INCLUDE_METRICSAllowlist of containers whose metrics you wish to include.
DD_CONTAINER_EXCLUDE_METRICSBlocklist of containers whose metrics you wish to exclude.
DD_CONTAINER_INCLUDE_LOGSAllowlist of containers whose logs you wish to include.
DD_CONTAINER_EXCLUDE_LOGSBlocklist of containers whose logs you wish to exclude.
DD_AC_INCLUDEDeprecated. Allowlist of containers to include (separated by spaces). Use .* to include all. For example: "image:image_name_1 image:image_name_2", image:.*
DD_AC_EXCLUDEDeprecated. Blocklist of containers to exclude (separated by spaces). Use .* to exclude all. For example: "image:image_name_3 image:image_name_4" (Note: This variable is only honored for Autodiscovery.), image:.*

Additional examples are available on the Container Discover Management page.

Note: The kubernetes.containers.running, kubernetes.pods.running, docker.containers.running, .stopped, .running.total and .stopped.total metrics are not affected by these settings. All containers are counted. This does not affect your per-container billing.

Note: When using containerd, it’s possible to ignore containers by namespace using DD_CONTAINERD_NAMESPACES and DD_CONTAINERD_EXCLUDE_NAMESPACES. Both are a space-separated list of namespaces. When DD_CONTAINERD_NAMESPACES is set, the agent reports data for the containers that belong to a namespace present in the list. When DD_CONTAINERD_EXCLUDE_NAMESPACES is set, the agent reports data for all the containers except the ones that belong to a namespace of the list.

Autodiscovery

Env VariableDescription
DD_LISTENERSAutodiscovery listeners to run.
DD_EXTRA_LISTENERSAdditional Autodiscovery listeners to run. They are added in addition to the variables defined in the listeners section of the datadog.yaml configuration file.
DD_CONFIG_PROVIDERSThe providers the Agent should call to collect checks configurations. The default provider is docker. The Docker provider handles templates embedded in container labels.
DD_EXTRA_CONFIG_PROVIDERSAdditional Autodiscovery configuration providers to use. They are added in addition to the variables defined in the config_providers section of the datadog.yaml configuration file.

Misc

Env VariableDescription
DD_PROCESS_AGENT_CONTAINER_SOURCEOverrides container source auto-detection to force a single source. e.g "docker", "ecs_fargate", "kubelet". This is no longer needed since Agent v7.35.0.
DD_HEALTH_PORTSet this to 5555 to expose the Agent health check at port 5555.

Commands

See the Agent Commands guides to discover all the Docker Agent commands.

Data collected

Metrics

By default, the Docker Agent collects metrics with the following core checks. To collect metrics from other technologies, see the Integrations section.

CheckMetrics
ContainerMetrics
CPUSystem
DiskDisk
DockerDocker
File HandleSystem
IOSystem
LoadSystem
MemorySystem
NetworkNetwork
NTPNTP
UptimeSystem

Events

The Docker Agent sends events to Datadog when an Agent is started or restarted.

Service checks

datadog.agent.up:
Returns CRITICAL if the Agent is unable to connect to Datadog, otherwise returns OK.

datadog.agent.check_status:
Returns CRITICAL if an Agent check is unable to send metrics to Datadog, otherwise returns OK.

Uninstall Single Step APM Instrumentation

If you installed the Datadog Docker Agent with Single Step APM Instrumentation, and you want to uninstall the Agent, you need to run additional commands to uninstall APM Instrumentation.

Further Reading