How to make reserved/backup vps ?

Posted October 30, 2015 2.6k views
Configuration Management

Hai all, i want to ask…
I am manage 1 domain with much subdomain, and my problems is my main vps often to going down.
It’s possible if i have second vps so if my main vps down my second vps automatic replace. So my domain still up allways online.
If this possible how to make this ? any tutorial can i read for it ?

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by Justin Ellingwood
Keepalived is a service that can monitor servers or processes in order to implement high availability on your infrastructure. In this guide, we will use the `keepalived` daemon to monitor two web servers. The secondary server will take over the web traffic if the primary server experiences issues by automatically claiming ownership of a shared Floating IP address using the DigitalOcean API.