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Boot directly from an HTTP mirror (e.g. http://mirror.rackspace.com/CentOS/7.2.1511/os/x86_64/). Specify the boot parameters: console=hvc0 utf8 nogpt noipv6 ks=https://github.com/grafke/xen-centos-7-kickstart/blob/master/cent70-server.ks Note: you may have to host the kickstart script on your own HTTP server, since occasional issues, possibly SSL-related, have been observed with netboot installers being unable to fetch the raw file through GitHub.
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use install_new_vm.sh to install a new VM from a template
TO-DO:
fix grub crashkernel=auto --> crashkernel=0M-2G:128M,2G-6G:256M