I recently installed a couple SSL certificates on a few domains, and generally they work, but whenever I switch IP addresses I get an ERR_CONNECTION_CLOSED error. If I refresh a few times, it will switch to SSL_VERSION_INTERFERENCE for one refresh, then work the next time, and all following loads until I change IPs again. This makes me believe it's some kind of caching error, but I'm not exactly sure where to look.
We are currently running Apache 2.2.15 (Nothing related in the error logs) on two servers behind an HTTPS load balancers. The LetsEncrypt certificates were generated on one server, and rsync'd to the other. I have two certificates per domain (with and without www., and a corresponding VirtualHost for each)
UPDATE: It appears that only one server attached to the load balancer was closing the connections. I removed that server from the balancer for the time being and all connections are being accepted. However the server denying the connections is the one that the certificates were generated on, not the one that got rsync'd to.