DEM area overview
The DEM area overview displays metric data from all website and URI entities monitored with SolarWinds Observability and information about the synthetic probe servers used to collect that data. To open the DEM area overview, click DEM in the left pane.
Metric data collected from all monitored website and URI entities with SolarWinds Observability is available in the Overview tab. To collect this synthetic monitoring metric data, SolarWinds Observability uses probes to periodically connect to the website and perform tests. Probes from the selected locations connect to your website at the specified interval and test the performance and availability of the website. View information about these probes in the Probes tab.
Overview of monitored websites
Click DEM in the left pane to view metric data collected from all monitored websites and URI entities.
The widgets in the area overview display the following information about all monitored websites and URI entities:
Overall Health
A health score provides real-time insight into the overall health and performance of your monitored entities. The health score is calculated based on anomalies detected for the entity, alerts triggered for the entity's metrics, and the status of the entity. The health score is displayed as a single numerical value that ranges from a Good (70-100) to Moderate (40-69) to Bad (0-39) distinction. To view individual monitored websites and their details in the Entity Explorer, click the widget title or click the vertical ellipsis in the upper-right corner of the widget and select View all websites.
Overall Availability
The success rate of all availability tests executed on the websites.
Active Alerts
An overview of the active alerts triggered by websites, categorized by severity. Active alerts are alerts that have been triggered but not cleared. This includes acknowledged alerts. For more information about the entity's active alerts, click the widget title or click the vertical ellipsis (
) in the upper-right corner of the widget and click View All Active Alerts.
Websites
A color-coded grid view of all monitored websites. A hexagon represents each entity and the color of the hexagon indicates whether the entity's health score is good, moderate, or bad. Hovering over the hexagons displays a pop-up containing the name of the website and its health score. You can sort the view by name or health and ascending or descending order. Click an entity, and then click View Details in the Inspector Panel to access the entity details view.
To view individual monitored websites and their details in the Entity Explorer, click the widget title or click the vertical ellipsis in the upper-right corner of the widget and select View all websites.
Probe servers and associated IP addresses
Click DEM > Probes to view a detailed list of all synthetic probe servers, their location, platform, and IP addresses. Synthetic probes are servers that collect website data from entities within a region, country, or city based on your website data settings. The data received from the probes is processed and contextualized into charts, graphs, and lists, that report the state of a website for each configured entity. This information includes website health, host health, and average response time. The probes are always active and listen for responses from entities within their geographical area. After they collect the website data, they process requests from active listeners.
One of the most common reasons for SolarWinds Observability reporting an outage is not that a site or server is down, but that our servers are being blocked by a firewall or access control list. Your server or site must open access to SolarWinds Observability URLs and IP addresses so SolarWinds Observability functions can complete.
Probe servers are easily identifiable by their location with information detailing their region, country, and city. To copy a probe's IP addresses, hover over the IPv4 column and click Copy. To export a list of all IPv4 addresses, click the vertical ellipsis and the desired export option.