Dynatrace automatically detects infrastructure-related performance anomalies such as high CPU saturation and memory outages. This page describes how to configure host anomaly detection, including problem and event thresholds, that will be useful if:
In Dynatrace, go to Anomaly detection for the level you are configuring.
Host group and select the host group you want to configure.
The Host group property is not displayed when the selected host doesn't belong to any host group.
<group name> link, where <group name> is the name of the host group that you want to configure.Go to Settings > Anomaly detection > Infrastructure > Hosts.
Use these settings to configure detection sensitivity and enable alerting for your hosts.
Detect host or monitoring connection lost problems—Turn this on to detect host or monitoring connection lost problems.
Detect CPU saturation on host—Turn this on to detect CPU saturation on the host.
Detection mode for CPU saturation—Whether to detect host CPU saturation based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
OneAgent version 1.261+ Detect High System Load on host—Turn this on to detect high system load on the host. This alert is only available for AIX hosts.
Detection mode for High System Load—Whether to detect host high system load based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Detect high memory usage on host—Turn this on to detect high memory usage on the host.
Detection mode for high memory usage—Whether to detect host high memory usage based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Configure the detection mode for high memory usage and alerting:
Detect high GC activity—Turn this on to detect high garbage collector activity.
Detection mode for high GC activity—Whether to detect high garbage collector activity based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Configure the detection mode for garbage collector activity and alerting:
Detect Java out of memory problem—Turn this on to detect Java out-of-memory exceptions.
Detection mode for Java out of memory problem—Whether to detect Java out-of-memory exceptions based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Configure the detection mode for Java out-of-memory problems and alerting:
Detect Java out of threads problem—Turn this on to detect Java out-of-threads exceptions.
Detection mode for Java out of threads problem—Whether to detect Java out-of-threads exceptions based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Detect high number of dropped packets—Turn this on to detect a high number of dropped packets.
Detection mode for high number of dropped packets—Whether to detect a high number of dropped packets based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Configure the detection mode for a high number of dropped packets and alerting:
Alert if the dropped packet percentage with total packets rate is higher than the defined thresholds.
Detect high number of network errors—Turn this on to detect a high number of network errors.
Detection mode for high number of network errors—Whether to detect a high number of network errors based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Alert if the error packet percentage with total packets rate is higher than the defined thresholds.
Detect high network utilization—Turn this on to detect high network utilization.
Detection mode for high network utilization—Whether to detect high network utilization based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Detect TCP connectivity problems for process—Turn this on to detect TCP connectivity problems.
Detection mode for TCP connectivity problems—Whether to detect TCP connectivity problems based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Alert if the new connection failure percentage and the number of failed connections are higher than the defined thresholds.
Detect high retransmission rate—Turn this on to detect a high retransmission rate. The setting is turned off by default.
Detection mode for high retransmission rate—Whether to detect a high retransmission rate based on automatic or custom settings.
If you select Based on custom settings, additional related settings are displayed:
Alert if the retransmission rate is higher than the specified threshold and the number of retransmitted packets is higher than the defined threshold for the defined amount of samples
You can set the alerting/dealerting event thresholds for the anomaly detection settings.
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The event thresholds are not available for the Detect host or monitoring connection lost problems and Detect high retransmission rate settings.
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