Server monitoring

Luna Node Dynamic includes server uptime monitoring. From the panel, you can create various types of checks including HTTP OK, SSL expiration, and ICMP ping. Then, create contacts through e-mail, web hook, SMS, or phone call (note that SMS/voice notifications are charged at the Twilio rate, rounded up to the nearest cent). And finally associate your checks with a subset of contacts.

Select Monitoring in the sidebar to manage your server monitoring.

Checks

The following checks are supported. The instructions should be self-explanatory, open a ticket if you encounter issues.

• HTTP page contains substring (http_contains): GET the target URL, and ensure that the page contents includes a given string.
• HTTP status OK (http_ok): GET the target URL and confirm status code is 200 OK.
• HTTP status code check (http_status): GET the target URL and confirm status code matches the given expected value.
• SSL expiration check (ssl_expire): connect via SSL and ensure certificate isn't going to expire soon.
• Ping (ping): do three ICMP pings to target and confirm that we get at least one ping back.
• TCP connection test (tcp_connect): connect to given host and port with timeout.

Contacts

You can add contacts with e-mail, web hook, SMS, or phone call.

For web hook contacts, enter the target URL, and the system will perform a POST request on the URL with the check details in the POST fields.

Alerts

Alerts is simply an association between a check and a contact. These are created by selecting a check after you create some from the Checks list, and then selecting a contact from dropdown and hitting Associate button.

The web hook alert will perform a POST request on the configured URL with these parameters (which will be form encoded):

• check_id: the ID of the check whose status changed
• name: check name
• type: check type
• data: check parameters
• status: either "online" or "offline", depending on whether the check came up or went down
• message: a description of the reason for the status change

Monitoring locations

Servers are monitored from these IP addresses:

• 164.90.140.121 / 2604:a880:800:10::a73:1 (New York)
• 161.35.81.251 / 2a03:b0c0:2:d0::ed8:f001 (Amsterdam)
• 24.199.97.144 / 2604:a880:4:1d0::73e:6000 (San Francisco)
• 46.101.19.128 / 2a03:b0c0:1:d0::1091:d001 (London)