Lesson 7

Dates: 3/5/2014
Start-up and Run Levels. Scheduled jobs (at, cron)
Linux for Engineering and IT Applications


Exercise: VM setup for startup scripts

  • Clone kvm1 to a new NFS server VM host, run01, by executing the command below: 
    virsh shutdown kvm1
virt-clone --connect=qemu:///system -o kvm1 -n run01 -f /home/hostadm/KVM/run01.img
  • Check if the new VM is in the list, start it, then login to its console: 
    virsh list --all
virsh start run01
virsh console run01
  • Fix the host name and the MAC address:
    remove line with "127.0.0.1 kvm1" in /etc/hosts file, then
    replace kvm1 with run01 in /etc/hostname file, 
    cp /dev/null /etc/udev/rules.d/70-persistent-net.rules
  • Fix the upstart script for ttyS0 to allow console at run level 1 as follows: edit file /etc/init/ttyS0.conf to include '1' in the list of the run levels, [12345] and [!12345]. The configuration file now should look as follows: 
    # ttyS0 - getty
#

start on stopped rc RUNLEVEL=[12345]
stop on runlevel [!12345]

respawn
exec /sbin/getty -L 115200 ttyS0 xterm

    Reboot the VM: 
    reboot
    After reboot, the new VM should come up with the correct host name and the MAC address.

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