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Network Monitor

Overview

Network monitors cover the TCP and HTTP checks available in the Agent. For details on Agent configuration, see the HTTP check or TCP check documentation.

Monitor creation

To create a network monitor in Datadog, use the main navigation: Monitors –> New Monitor –> Network.

Network Status

Pick a check

  • Choose a network check type (ssl, http, or tcp).
  • Choose a specific endpoint or All monitored <TYPE> endpoints.

Pick monitor scope

Select the scope to monitor by choosing host names, tags, or choose All Monitored Hosts. If you need to exclude certain hosts, use the second field to list names or tags.

  • The include field uses AND logic. All listed hostnames and tags must be present on a host for it to be included.
  • The exclude field uses OR logic. Any host with a listed hostname or tag is excluded.

Set alert conditions

In this section, choose between a Check Alert or Cluster Alert:

A check alert tracks consecutive statuses submitted per check grouping and compares it to your thresholds.

Set up the check alert:

  1. Trigger a separate alert for each <GROUP> reporting your check.

    Check grouping is specified either from a list of known groupings or by you. For network monitors, the per-check grouping is explicitly known. For example, the HTTP check is tagged with host, instance, and url.

  2. Trigger the alert after selected consecutive failures: <NUMBER>

    Each check run submits a single status of OK, WARN, or CRITICAL. Choose how many consecutive runs with the CRITICAL status trigger a notification. For example, your HTTP check might have a single blip where the connection fails. If you set this value to > 1, the blip is ignored, but a problem with more than one consecutive failure triggers a notification.

  3. Resolve the alert after selected consecutive successes: <NUMBER>

    Choose how many consecutive runs with the OK status resolve the alert.

A cluster alert calculates the percent of checks in a given status and compares it to your thresholds.

Set up a cluster alert:

  1. Decide whether or not to group your checks according to a tag. Ungrouped calculates the status percentage across all sources. Grouped calculates the status percentage on a per-group basis.

  2. Select the percentage for the alert threshold.

See the metric monitor documentation for information on No data, Auto resolve, and Evaluation delay options.

Notifications

For detailed instructions on the Say what’s happening and Notify your team sections, see the Notifications page.

Network Metric

Create a network metric monitor by following the instructions in the metric monitor documentation. Using the network metric monitor type ensures the monitor can be selected by the network monitor type facet on the Manage Monitors page.

Further Reading