Cluster Agent Commands and Options
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Cluster Agent commands
The available commands for the Datadog Cluster Agents are:
datadog-cluster-agent status- Gives an overview of the components of the Agent and their health.
datadog-cluster-agent metamap <NODE_NAME>- Queries the local cache of the mapping between the pods living on
NODE_NAME, and the cluster level metadata they are associated with, such as endpoints. Not specifying the NODE_NAME runs the mapper on all the nodes of the cluster. datadog-cluster-agent flare <CASE_ID>- Similarly to the node-based Agent, the Cluster Agent can aggregate the logs and the configurations used and forward an archive to the support team, or be deflated and used locally. Note: this command runs from within the Cluster Agent pod.
Cluster Agent options
The following environment variables are supported:
DD_API_KEY- Your Datadog API key.
DD_HOSTNAME- Hostname to use for the Datadog Cluster Agent.
DD_ENV- Sets the
env tag for data emitted by the Cluster Agent. Recommended only if the Cluster Agent monitors services within a single environment. DD_CLUSTER_AGENT_CMD_PORT- Port for the Datadog Cluster Agent to serve. Defaults to
5005. DD_USE_METADATA_MAPPER- Enables cluster level metadata mapping. Defaults to
true. DD_COLLECT_KUBERNETES_EVENTS- Configures the Agent to collect Kubernetes events. Defaults to
false. DD_LEADER_ELECTION- Activates leader election. Set
DD_COLLECT_KUBERNETES_EVENTS to true to activate this feature. Defaults to false. DD_LEADER_LEASE_DURATION- Used only if leader election is activated. Value in seconds, 60 by default.
DD_CLUSTER_AGENT_AUTH_TOKEN- 32 characters long token that needs to be shared between the node Agent and the Datadog Cluster Agent.
DD_KUBE_RESOURCES_NAMESPACE- Configures the namespace where the Cluster Agent creates the configmaps required for the leader election, event collection (optional), and horizontal pod autoscaling.
DD_CLUSTER_AGENT_KUBERNETES_SERVICE_NAME- Name of the Kubernetes service through which Cluster Agents are exposed. Defaults to
datadog-cluster-agent. DD_KUBERNETES_INFORMERS_RESYNC_PERIOD- Frequency (in seconds) for querying the API server to resync the local cache. The default is 5 minutes, or
300 seconds. DD_KUBERNETES_INFORMERS_RESTCLIENT_TIMEOUT- Timeout (in seconds) of the client communicating with the API server. Defaults to
60 seconds. DD_EXPVAR_PORT- Port for fetching expvar public variables from the Datadog Cluster Agent. Defaults to port
5000. DD_EXTERNAL_METRICS_PROVIDER_BATCH_WINDOW- Time waited (in seconds) to process a batch of metrics from multiple autoscalers. Defaults to
10 seconds. DD_EXTERNAL_METRICS_PROVIDER_MAX_AGE- Maximum age (in seconds) of a datapoint before considering it invalid to be served. Default to
120 seconds. DD_EXTERNAL_METRICS_AGGREGATOR- Aggregator for Datadog metrics. Applies to all autoscalers processed. Choose from
sum/avg/max/min. DD_EXTERNAL_METRICS_PROVIDER_BUCKET_SIZE- Size of the window (in seconds) used to query metrics from Datadog. Defaults to
300 seconds. DD_EXTERNAL_METRICS_LOCAL_COPY_REFRESH_RATE- Rate to resync local cache of processed metrics with the global store. Useful when there are several replicas of the Cluster Agent.
DD_CLUSTER_CHECKS_ENABLED- Enable Cluster Check Autodiscovery. Defaults to
false. DD_EXTRA_CONFIG_PROVIDERS- Additional Autodiscovery configuration providers to use.
DD_EXTRA_LISTENERS- Additional Autodiscovery listeners to run.
DD_CLUSTER_NAME- Cluster name. Added as an instance tag to all cluster check configurations.
DD_CLUSTER_CHECKS_CLUSTER_TAG_NAME- Name of the instance tag set with the
DD_CLUSTER_NAME option. Defaults to cluster_name. DD_CLUSTER_CHECKS_NODE_EXPIRATION_TIMEOUT- Time (in seconds) after which node-based Agents are considered down and removed from the pool. Defaults to
30 seconds. DD_CLUSTER_CHECKS_WARMUP_DURATION- Delay (in seconds) between acquiring leadership and starting the Cluster Checks logic, allowing for all node-based Agents to register first. Default is
30 seconds. DD_CLUSTER_CHECKS_EXTRA_TAGS- Adds extra tags to cluster checks metrics.
DD_PROXY_HTTPS- Sets a proxy server for HTTPS requests.
DD_PROXY_HTTP- Sets a proxy server for HTTP requests.
DD_PROXY_NO_PROXY- Sets a list of hosts that should bypass the proxy. The list is space-separated.
Further Reading
Documentation, liens et articles supplémentaires utiles:
