Installing Kasm is very easy if you have a server or vm with anufe specks you are going to need 2+ cores 4+gb of ram and a swap file with 1+gb for every user that you plan to have logged in.
after you get the server os installed you will need to make the the swap file
sudo fallocate -l 4g /mnt/4GiB.swap
sudo chmod 600 /mnt/4GiB.swap
sudo mkswap /mnt/4GiB.swap
sudo swapon /mnt/4GiB.swap
now that you have the sawp file made it is time to install Kasm
cd /tmp
curl -O https://kasm-static-content.s3.amazonaws.com/kasm_release_1.12.0.d4fd8a.tar.gz
tar -xf kasm_release_1.12.0.d4fd8a.tar.gz
sudo bash kasm_release/install.sh
when you log into the web browser you are going to need to use https not http