UML(UserMode Linux) 사용방법

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게시글147 댓글412 총합559 @leemgs

 

User-mode Linux (UML) allows multiple virtual Linux systems (known as guests) to run as an application within a normal Linux system (known as the host). As each guest is just a normal application running as a process in user space, this approach provides the user with a way of running multiple virtual Linux machines on a single piece of hardware, offering excellent security and safety without affecting the host environment's configuration or stability.

0. Related Website
http://user-mode-linux.sourceforge.net/
http://www.crashcourse.ca/wiki/index.php/User_Mode_Linux_on_Fedora

1. UML Utilities 설치하기
( uml_net, uml_mconsole, uml_switch, tunctl, )

fc6#> echo "p7KeCa" > ~/.uml
fc6#> dmesg | grep mconsole
mconsole (version 2) initialized on /home/rpjday/.uml/p7KeCa/mconsole
                                                     ^^^^^^ there it is again
fc6#> yum install fuse-devel
          (http://fuse.sf.net  : File System in Userspace (FUSE) libraries)
fc6#> w g e t http://user-mode-linux.sourceforge.net/uml_utilities_20070815.tar.bz2
fc6#> bunzip2 uml_utilities_20070815.tar.bz2
fc6#> tar xf uml_utilities_20070815.tar
fc6#> cd tools-20070815/
fc6#> make all
fc6#> make BIN_DIR=/usr/local/bin install
fc6#> ls /usr/local/bin/uml*
/usr/local/bin/uml_mconsole  /usr/local/bin/uml_net    /usr/local/bin/uml_mkcow    
/usr/local/bin/uml_switch       /usr/local/bin/uml_moo  /usr/local/bin/uml_watchdog
/usr/local/bin/uml_mount
fc6#> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

2. UMLKernel 설치하기
fc6#> w g e t http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.tar.bz2
fc6#> unzip2 linux-2.6.24.tar.bz2
fc6#> tar xf linux-2.6.24.tar
fc6#> cd linux-2.6.24
fc6#> make defconfig ARCH=um
fc6#> make menuconfig ARCH=um
fc6#> make mrproper
fc6#> make mrproper ARCH=um
fc6#> make ARCH=um
fc6#> ls -l linux
fc6#> file linux
linux-2.6.24: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped

3. Getting Started
   * HOST-side: 192.168.1.254
   * UML-side: 192.168.1.253
fc6#> w g e t http://user-mode-linux.sourceforge.net/linux-2.6.24-rc7.bz2
fc6#> w g e t http://uml.nagafix.co.uk/FedoraCore5/FedoraCore5-x86-root_fs.bz2
fc6#> bunzip2 linux-2.6.24-rc7.bz2 FedoraCore5-x86-root_fs.bz2
fc6#> chmod 755 ./linux-2.6.24-rc7
fc6#> uml_mconsole p7KeCa config eth0=tuntap,,,192.168.1.254
fc6#> ./linux-2.6.24-rc7 ubda=FedoraCore5-x86-root_fs mem=128M eth0=tuntap,,,192.168.1.254
            Fedora Core release 5 (Bordeaux)
            Kernel 2.6.19-rc7 on an i686
            localhost login: root  (no password)
          [UML]#
          [UML]# halt
          [UML]#  
          [UML]# ifconfig eth0 192.168.1.253 up
          [UML]# ifconfig eth0
          [UML]# route add default gw 192.168.1.254
          [UML]# route
          [UML]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
          [UML]# service network {start,stop,restart,status}
          [UML]# chkconfig --add network
          [UML]# chkconfig --list
          [UML]# df
                     Filesystem           1K-blocks      Used Available Use% Mounted on
                     /dev/ubda              1548144    409196   1060308  28% /
                     tmpfs                   786432         0    786432   0% /tmp
          [UML]# mount
                     /dev/ubda on / type auto (rw)
                     none on /proc type proc (rw)
                     none on /dev/pts type devpts (rw,gid=5,mode=620)
                     tmpfs on /tmp type tmpfs (rw,size=768M)
          [UML]#
          [UML]#
fc6#> ifconfig tap0

fc6#>

4. gdb(or ddd)으로 UML Kernel  Debugging하기
http://user-mode-linux.sourceforge.net/old/UserModeLinux-HOWTO-11.html

fc6#> ddd ./linux-2.6.24-rc7 ubda=FedoraCore5-x86-root_fs mem=128M eth0=tuntap,,,192.168.1.254

* 오픈소스는 Open Innovationa & 윈윈전략을 도모할 지언정 절대 공짜(무료)임을 뜻하지 않는다.치

[ELem참가자]

ELem 참가자

게시글74 댓글719 총합793 @Bardisch

 

ㅤㄲㅑㄲ 이거 쓰면 VM놀이가 더 재밌어지려나 -ㅅ-