Not everything has a web page. A ping monitor tells you when a server stops answering. A port monitor tells you when a service, such as a database or a mail server, stops accepting connections.
Add a ping or port monitor
- Open Uptime and select Add monitor.
- Select Ping or Port, then Continue.
- Enter the host: a name, such as
db.example.com, or a public IP address. For an IP address in a project without a website, also enter your website. The monitor is listed under it. - For a port monitor, enter the port, or select a common one, such as PostgreSQL 5432 or Mail 587.
- Select Check now. DataDad checks the host from the probe host and shows the answer.
- Select Continue, then choose who gets alerts.
How the checks work
- Ping sends three pings. The monitor is up when any of them comes back. The response time is the average round trip.
- Port opens a TCP connection. The monitor is up when the port accepts it. The response time is the time to connect.
- Each attempt has 5 seconds. A failed attempt is tried again after 2 seconds, and the monitor is down only when both fail.
Allow our checks through your firewall
Ping and port checks come from one address: 46.225.155.127. If your firewall only lets known addresses in, allow this address for ICMP echo (ping) or for the port you monitor.
Limits
- Private and internal addresses, such as
10.0.0.1or192.168.1.1, cannot be checked. - Ports 25 and 465 cannot be checked. For a mail server, check port 587.