---
# System prepended metadata

title: Qemu - Install Guide
tags: [VM, ' qemu']

---

---
title: Qemu - Install Guide
tags: VM, qemu
---

# QEMU-KVM - How to install and create a VM

1. Download and build QEMU source code
    ```bash=1
    wget http://download.qemu-project.org/qemu-2.8.0.tar.xz
    tar xvJf qemu-2.8.0.tar.xz
    cd qemu-2.8.0
    ./configure --target-list=x86_64-softmmu \
    --python=/bin/python2.7 \
    --prefix=${TARGET_DIR}
    make -j 4
    make install
    ```
    - `${TARGET_DIR}` is your absolute path you want to install your Qemu to, e.g. */home/demouser/qemu-bin*
2. Create the image format supported by QEMU
    ```bash=1
    mkdir project
    cd project
    ${TARGET_DIR}/bin/qemu-img  create -f raw ubuntu.img 15G
    ```
    - ubuntu.img is the image file name
    - 15G is the size of the image file
3. Install ubuntu-16.04 server on VM
    1. Prepare to boot the kernel
        ```bash=1
        ${TARGET_DIR}/bin/qemu-system-x86_64 \
        --enable-kvm -drive format=raw,file=ubuntu.img,if=virtio \
        -m 2048 -net nic,model=virtio -net user \
        -rtc base=localtime,clock=host \
        -cdrom /home/share/ubuntu/ubuntu.iso -kernel /home/share/ubuntu/vmlinuz \
        -nographic -append console=ttyS0 \
        -initrd /home/share/ubuntu/initrd.gz
        ```
        Command illustration:
        - -m : memory size
        - -net : network interface setting
        - -cdrom : ubuntu-16.04 image
        - -kernel vmlinuz : a compresses linux kernel from vmlinux
        - -nographic -append console=ttyS0 : Redirect standard output to host machine
    2. Install ubuntu 16.04
        ![](http://i.imgur.com/YK3GsQB.png)
        ![](http://i.imgur.com/j18mlBK.png)
        ![](http://i.imgur.com/wXdomGt.png)
        ![](http://i.imgur.com/FxkkNAI.png)
        ![](http://i.imgur.com/9SWbhQO.png)
        ![](http://i.imgur.com/B1tffTm.png)
        ![](http://i.imgur.com/DEldblx.png)
         input "your studentID"-0
        ![](http://i.imgur.com/3e9v0bm.png)
        ![](http://i.imgur.com/7yBgdJY.png)
        ![](http://i.imgur.com/3a0r3e6.png)
        ![](http://i.imgur.com/qmgwUla.png)
        ![](http://i.imgur.com/ZO7IORO.png)
        ![](http://i.imgur.com/sIrZjVE.png)
        ![](http://i.imgur.com/DKhapsf.png)
        ![](http://i.imgur.com/TCjwTii.png)
        ![](http://i.imgur.com/BuK2nYB.png)
        ![](http://i.imgur.com/tWZ8ag2.png)
        ![](http://i.imgur.com/n1dawBI.png)
        ![](http://i.imgur.com/xsIBrQi.png)
        ![](http://i.imgur.com/hVdFNkY.png)
        ![](http://i.imgur.com/vZwqszA.png)
        ![](http://i.imgur.com/nU0ortr.png)
        ![](http://i.imgur.com/9AQrN49.png)
        ![](http://i.imgur.com/Cl0hojm.png)
        ![](http://i.imgur.com/z0xHbuQ.png)
        ![](http://i.imgur.com/drcCWGh.png)
        ![](http://i.imgur.com/AuCTBIn.png)
        ![](http://i.imgur.com/e7IVfr0.png)
        
    3. **Terminate QEMU**
        1. Open a new session on terminal and login your account
        2. **Kill QEMU**
            ```bash=1
            killall qemu-system-x86_64
            ```
4. Exexute the virtual machine:
    ```bash=1
    ${TARGET_DIR}/bin/qemu-system-x86_64 \
    --enable-kvm -drive format=raw,file=image_file,if=virtio \
    -m 2048 -net nic,model=virtio -net user \
    -rtc base=localtime,clock=host \
    -curses
    ```
    - You will find out your VM is blocked in this step ...
    ![](https://i.imgur.com/OObsJvm.png)
    - Two ways to solve this issue:
        1. Switch to QEMU monitor console in the current terminal 
            - Press `alt` + `2` or `esc` + `2` to switch to QEMU console, type `sendkey ctrl-alt-f1`, and then press `enter`
                ![](https://i.imgur.com/2Hgx5Jn.png)
            - Press `alt` + `1` or `esc + 1` to switch back to screen
                ![](http://i.imgur.com/6JzDtyr.png)
        2. Access the QEMU monitor console via Telnet 
            - Add the telnet option (`-monitor telnet:127.0.0.1:5566,server,nowait`) when launching the VM:
           ```bash=1
            ${TARGET_DIR}/bin/qemu-system-x86_64 \
            --enable-kvm -drive format=raw,file=ubuntu.img,if=virtio \
            -m 2048 -net nic,model=virtio -net user \
            -rtc base=localtime,clock=host \
            -curses \
            -monitor telnet:127.0.0.1:5566,server,nowait
            ```
            - Open a new session on terminal and type:
                - $ `telnet 127.0.0.1 5566`
            - Enter the QEMU monitor and input:
                - (qemu) `sendkey ctrl-alt-f1`
            - Switch to the original session and log in to your account