Notes from running CentOS 7 in QEMU on Mac

qemu

# Install qemu
brew install qemu

# Create disk image for root file system
qemu-img create -f qcow2 centos-7.qcow2 10G

# Run with ISO image mounted as cdrom for installing
qemu-system-x86_64 \
  -m 2048 \
  -vga virtio \
  -usb \
  -device usb-tablet \
  -enable-kvm \
  -cdrom CentOS-7-x86_64-Minimal-2003.iso \
  -drive file=centos-7.qcow2,if=virtio \
  -machine accel=hvf \
  -cpu host

# Run configured instance
qemu-system-x86_64 \
  -m 2048 \
  -vga virtio \
  -usb \
  -device usb-tablet \
  -enable-kvm \
  -drive file=centos-7.qcow2,if=virtio \
  -machine accel=hvf \
  -cpu host


# Configure network in CentOS 7
# https://phoenixnap.com/kb/configure-centos-network-settings
vi /etc/sysconfig/network-scripts/ifcfg-ens3
`ONBOOT="yes"`
`DNS1=1.1.1.1`
`DNS2=8.8.8.8`

qstart

#!/usr/bin/env bash
# Create raw image: qemu-img create -f qcow2 centos-7.qcow2 25G
# Download Centos 7: curl -sSLO http://mirrors.oit.uci.edu/centos/7.8.2003/isos/x86_64/CentOS-7-x86_64-Minimal-2003.iso

shopt -s extglob

cd ~/QEMU

msg="starting qemu..."
OPT_SNAPSHOT="-snapshot"

for arg in $*; do
    if [ ${arg} == "--dry-run" -o ${arg} == "-n" ]; then
	ACTION="echo"
    fi
    if [ ${arg} == "--update" -o ${arg} == "-u" ]; then
	echo -n "warning: starting in update mode, continue [y/n]: "
	read input
	case "${input}" in
	    [Yy]) ;;
	    [Nn]*|'') exit 0;;
	    *) echo "error: Invalid response, Please try again." && exit -1;;
	esac

	msg="${msg}\nwarning: Starting in update mode!"
	OPT_SNAPSHOT=""
    fi
done

OPTS="${OPT_SNAPSHOT} $*"

echo -e ${msg}
set -x
${ACTION} qemu-system-x86_64 \
  -m 2048 \
  -vga virtio \
  -usb \
  -device usb-tablet \
  -enable-kvm \
  -cdrom CentOS-7-x86_64-Minimal-2003.iso \
  -drive file=centos-7.qcow2,if=virtio \
  -machine accel=hvf \
  -cpu host \
  -display cocoa,show-cursor=on \
  ${OPTS}