Threshold: Number of failed checks to wait before any action is taken.Check Interval: How frequently to check the selected services (the time between tests of the selected services).*.Round Robin (RR) IP: Only applies to Round Robin hosts.Current IP: The current IP address of the monitored host.This allows you to be alerted, for example, if your mail server application crashes despite the web server continuing to work and the server being reachable by ping.įor a list of host monitoring nodes easyDNS uses for tests, please refer to the Host Monitoring & Failover section of your easyDNS account for the latest IPs for firewall whitelisting. Our monitoring service performs a proper connection attempt based on the selected protocol. If none of the checkboxes are selected, this means no monitoring has been enabled for the host.Įach selected checkbox defines one of the services that we will monitor for you on that host/server. NOTE: The NOTIFY AND FAILOVER option will allow the user to specify an IP address whereas the NOTIFY AND REDIRECT option will allow for a URL.Ĭhecking off one of the services to be monitored enables the monitoring of that host. Once the IP addresses are in place, you can take the following steps to enable monitoring and/or failover: To enable Host Monitoring & Failover for your domain, you’ll first need to make sure you have A, AAAA (IPv6), DYN, or URL forwarding records specified because it will be the associated IP addresses that can be monitored. If you’ve provided an IP for a backup server, we’ll switch the DNS for it automatically, so downtime is minimized. If a service you’ve specified goes down, we’ll alert you immediately. Our Host Monitoring & Failover service provides a simple interface to monitor your server for continuity of web (HTTP/HTTPS), mail (SMTP), FTP, PING, and SSH/SFTP servers. NOTE: Due to DNS caching, DNS failover is not intended to be a zero-downtime solution, but using a low TTL (Time To Live) value (such as 60 seconds), can reduce downtime to a minimum.įor applications requiring high availability, it’s important to be notified as soon as there’s a problem detected and to automatically make DNS updates to remove a problematic server.
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