If you are seeing very slow installation time or timeouts connecting to install.mediacp.net this can be caused by various networking isuses or poor disk performance. Our installation utility will timeout if no new lines are being written for 7.5 minutes, so if the installation is still running it won't be stuck just very slow. You can check the logs in /root/mediacp_install/ to see that new lines are being written.
Disk Performance
If the installation is taking a very long time, your disk may be hitting performance issues. You can test this by completing the steps in the following knowledgebase article: Poor Disk Performance - Silence on tracks, Slow Installation, Panel Slowdown
IPV6
Our installation utility should work over IPV6 however some servers still have isues when using IPV6 despite defaulting to it. If you are seeing slowdown or timeouts with IPV6 addresses your server may be having issues connecting to our installation domain over IPV6.
You can confirm this is the case by running wget restricted to IPV4 to see if it works successfully:
wget --inet4-only http://install.mediacp.net
In these cases, you can contact your server provider or simply disable IPV6 using a guide such as this: RHEL 8 / CentOS 8 enable/disable IPv6