how-to · watch Open this in the console

Check that a name resolves.

Health › checks. Pick DNS name resolves. The agent asks its own resolver. You are still pushing a document, not a script.

Leave the expected address empty when any answer is enough. Fill it when the name must be that one IP.

Pick DNS name resolves

Open the machine, then health › checks. The primitive is DNS name resolves. Hostname is the name this machine should be able to look up. Expected IP is optional. Here fs01.example.local must come back as 10.1.1.20, so a stale hosts entry or a bad DNS server fails the check. Add a disk or ping check is the same editor.

Checks editor with a DNS check for fs01.example.local expected at 10.1.1.20 — Accounts server. fs01.example.local must resolve to 10.1.1.20. Not added yet.

Add to list, then push

Press add to list. The check sits in the document. Push to agent is the next click, and it asks you to confirm. Push replaces the whole document. This shot stops before that, so nothing has been sent. When the name does not resolve, or resolves to a different address, the alert is a check failure.

Checks list with a DNS check named File server name resolves, not yet pushed — File server name resolves is on the list. Push has not been pressed.

Push is a two-step button. The agent must be online to evaluate. You can still add the check while it is offline, and it applies at the next hello. A ping of the same host is Add a disk or ping check. Reaching a port is Check that a share or port answers.