First, you want to log into the Constellix control panel through the Sonar application. If you are already logged into another Constellix application, use the menu button in the top left corner to switch to the Sonar application.
From the dashboard, click “Add Check” and choose the kind of check you want to create. There are three different kinds of checks you can create: web, TCP, and DNS. In this example, we will create a web check to monitor the IP addresses of our web servers.
Name: Make sure you use a really specific name for your checks. For example, if we want to create a check for a web server in Europe, we might want to name it EU Web Server. This comes in handy later when you start applying checks to your DNS records.
Host: Specify the endpoint for your check. An endpoint can be an IP address or FQDN (Fully Qualified Domain Name).
You’ll notice there are a lot of options when you configure a check. We’ll break them down for you quickly.
Interval: Choose how often you want our monitoring nodes to check the status of your endpoint. Keep in mind, if you choose a shorter time, the more costly it will be. Also consider that the more monitoring locations you choose will reduce the interval time if you choose the “Once per Site” or “Once per Region” interval policies. Since we are running checks from multiple locations each interval, the interval period is actually reduced to Interval/Monitoring Locations and can be as short as a fraction of a second.
If you are worried about cost, try out our pricing calculator.
Interval Policy: You can choose Simultaneous (all locations each check) or Once per Site. What these mean is how many locations will be checks at each monitoring interval.
Verification Policy: If you choose more than one monitoring location, you can choose how a system is determined to be “unavailable”.
If one location is chosen and is down then the check will be considered down. If multiple, then next closest location is checked. If both are down, then down.
Half or more of the locations have detected the endpoint as down.
Choose the expiration of the notification report. This report is included with email alerts when a check is down and shows a detailed traceroute and recent downtime for the check.
When you are done, make sure you test the check by clicking the Test Check button and a monitoring location from the dropdown menu.
Save your check.