Host Monitoring & Failover
Posted by Shaker B. on 11 October 2017 02:10 PM
For 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.
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 minumum.
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. If a service you've specified goes down, we'll alert you immediately. If you've provided an IP for a back-up server, we'll switch the DNS for it automatically, so downtime is minimized.
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. Once the IP addresses are in place, you can take the following steps to enable monitoring and/or failover:
1. Log into your easyDNS account
3. Click on the TOOLS tab
5. Configure your host and click NEXT
NOTE: The cost for HOST MONITORING & FAILOVER is $1.50 per month per monitored host (DNS Pro comes with 1 free host monitoring record and Enterprise comes with 3).
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.
6. Confirm your changes
Checking off one of the services to be monitored enables the monitoring for that host. If none of the check-boxes are selected, this means no monitoring has been enabled for the host.
Each selected checkbox defines one of the services that we will monitor for you on that host/server. Our monitoring service performs a proper connection attempt based on the selected protocol. 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.
Please note that our service levels allow for different CHECK INTERVAL times. These are as follows:
• Host Monitoring / Failover DNS - Available at all service levels, DNS-Pro includes 1 host & Enterprise includes 3 hosts.
1 host - $1.50 / month or $18 / year
5 hosts - $7.50 / month
10 hosts - $15 / month
25 hosts - $37.50 / month
50 hosts - $75 / month
100 hosts - $150 / month