Hi all, I found UML and found it a good thing. I tried it on my local machine. Everything worked fine. What i did (from Step 3 as root): (Host is on 192.168.1.xxx network)
dd if=/dev/zero of=uml-root-jaunty bs=4096 seek=1M count=1 mkfs.ext3 uml-root-jaunty mount -o loop uml-root-jaunty /mnt/testvm debootstrap jaunty /mnt/testvm http://de.archive.ubuntu.com/ubuntu echo "/dev/ubd0 / ext3 defaults 0 1" > /mnt/testvm/etc/fstab echo "proc /proc proc defaults 0 0" >> /mnt/testvm/etc/fstab echo "127.0.0.1 localhost" > /mnt/testvm/etc/hosts echo "auto lo" > /mnt/testvm/etc/network/interfaces echo "iface lo inet loopback" >> /mnt/testvm/etc/network/interfaces echo "auto eth0" >> /mnt/testvm/etc/network/interfaces echo "iface eth0 inet static" >> /mnt/testvm/etc/network/interfaces echo " address 192.168.1.251" >> /mnt/testvm/etc/network/interfaces echo " netmask 255.255.255.0" >> /mnt/testvm/etc/network/interfaces echo "tty0" >> /mnt/testvm/etc/securetty echo "ttys/0" >> /mnt/testvm/etc/securetty rm /mnt/testvm/etc/event.d/tty2 rm /mnt/testvm/etc/event.d/tty3 rm /mnt/testvm/etc/event.d/tty4 rm /mnt/testvm/etc/event.d/tty5 rm /mnt/testvm/etc/event.d/tty6 I cd to /mnt/testvm/lib/modules and copied /usr/lib/uml/modules/2.6.22-5c5 there. After that, i chrooted into /mnt/testvm, set passwd, left chroot, and started linux ubd0=uml-root-jaunty umid=uml1 eth0=tuntap,,,192.168.1.250 The UML guest started and opened 6 gnome terminals (only one with a login prompt, but that was sufficient). I logged in as root, installed the ssh daemon, and to avoid the now unnecessary terminals, i added next time con0=fd:0,fd:1 con=pts to the start parameters. Everything worked fine. So i promised a friend a virtual server on my dedicated server. It's a machine i have no physical access to. Let's say it's IP is 1.2.3.4. My provider gave me still network addresses 1.2.5.0/255.255.255.248. A traceroute shows that those additional IP are properly routed to my server. It is running an up-to-date ubuntu, and generally working fine. I installed all prerequisites. Now i repeated the above process. Of course, i gave not 192.168.1.251 in the echo command, but 1.2.5.3, what i selected for the guest. I copied the uml-modules and chrooted for setting a password. And i started with linux ubd0=uml-root-jaunty umid=uml1 eth0=tuntap,,,1.2.5.1 ssl=port:9000 (i don't get a terminal at my machine at home, and somehow i need to connect), so that the hosts tap0 has 1.2.5.1 as IP. I get a lot of errors, mostly that mknod could not create a db file /dev/... because no space left on device. The root fs is mounted ro, so i did not expect anything else, and on my local machine it worked. But also i get: * Loading hardware drivers... [42949377.410000] * modprobe tun [42949377.410000] * ifconfig tap0 1.2.5.1 netmask 255.255.255.255 up [42949377.410000] * bash -c echo 1 > /proc/sys/net/ipv4/ip_forward [42949377.410000] * route add -host 1.2.5.3 dev tap0 [42949377.410000] * bash -c echo 1 > /proc/sys/net/ipv4/conf/tap0/proxy_arp [42949377.410000] * arp -Ds 1.2.5.3 eth0 pub [42949377.410000] * arp -Ds 1.2.5.3 eth0 pub [42949377.410000] * route del -host 1.2.5.3 dev tap0 [42949377.410000] * bash -c echo 0 > /proc/sys/net/ipv4/conf/tap0/proxy_arp [42949377.410000] * arp -i eth0 -d 1.2.5.3 pub [42949377.410000] * arp -i eth0 -d 1.2.5.3 pub [42949377.410000] Kein ARP-Eintrag für 1.2.5.3 [42949377.410000] * route add -host 1.2.5.3 dev tap0 [42949377.410000] * bash -c echo 1 > /proc/sys/net/ipv4/conf/tap0/proxy_arp The third line from bottom translates from german to "no ARP-Entry for 1.2.5.3" On the host OS, ifconfig finds tap0 Link encap:Ethernet Hardware Adresse be:fa:2d:92:11:39 inet Adresse:1.2.5.1 Bcast:88.255.255.255 Maske:255.255.255.255 inet6-Adresse: fe80::bcfa:2dff:fe92:1139/64 Gültigkeitsbereich:Verbindung UP BROADCAST RUNNING MULTICAST MTU:1500 Metrik:1 RX packets:6 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 Kollisionen:0 Sendewarteschlangenlänge:500 RX bytes:468 (468.0 B) TX bytes:468 (468.0 B) and route 1.2.5.3 * 255.255.255.255 UH 0 0 0 tap0 But a ping finds its target. And nmap shows all ports, especially 9000, closed. How do i get inside the guest? Also, 1.2.5.3 is not pingable from my home machine. Is there anything else for making routing possible? TIA from an uml newbie QNo -- ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
