Using your house's mains is a better idea, but if that's not possible for whatever reason, you might want to look at using a fail-over DNS record rather than a VPS running haproxy. It's not a standard feature of DNS, but some DNS providers including Amazon's Route 53 offer it. https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dn...
It will route to your solar setup while it's responding to it's healthchecks, otherwise to the failover.
Also, depending on how much traffic your blog gets, you might be able to do away with the failover and front it with a CDN. Cloudflare's free tier will probably be enough. If you get too little traffic, you wont maintain a hot cache and it just won't work.
It will route to your solar setup while it's responding to it's healthchecks, otherwise to the failover.
Also, depending on how much traffic your blog gets, you might be able to do away with the failover and front it with a CDN. Cloudflare's free tier will probably be enough. If you get too little traffic, you wont maintain a hot cache and it just won't work.