Provided by: dtc-xen_0.5.15-1_all bug


       dtc_reinstall_os - reinstall an operating system in a VM


       dtc_reinstall_os   [   -v   ]   [   OPTIONS   ]  -vpsid  <ID>  -ram  <RAM  size  MB>  -nic
       <ip>[,<netmask>[,<broadcast>]]  -pass  <root-password>  -os   <operating-system>   [   -gw
       <default-gateway> ] [ -dns <dns1-ip>[,<dns2-ip>] ]


       dtc-reinstall_os  This shell script is a part of the dtc-xen package that is to be used by
       the dtc panel to manage a Xen VPS server.

       dtc_reinstall_os will bootstrap an operating system for you, so you can later use it in  a
       virtual  machine  (a  VM),  otherwise called a virtual private server (a VPS). This script
       will be called by dtc-xen when you order it to install a VPS through the  SOAP  server  of
       dtc-xen.  You  can  as  well  use it directly on the shell if you don't have a DTC control
       panel server already setup.

       Additional configuration files

              When  doing  it's  setup,   dtc_reinstall_os   will   copy   the   file   /etc/dtc-
              xen/authorized_keys2     into    the    VPS's    /root/.ssh/authorized_keys2    and
              /root/.ssh/authorized_key, so the administrator has access to the VPS  without  the
              need  of  shutting  it  down.  So  it's  a good idea to copy your shh public key in
              /etc/dtc-xen/authorized_keys2. dtc_reinstall_os will  also  copy  /etc/dtc-xen/motd
              into  the  /etc/motd of the VPS (and /etc/motd.tail if a Debian operating system is
              installed), and /etc/dtc-xen/bashrc into the /root/.bashrc.

              Another very important configuration file is /etc/dtc-xen/dtc-xen.conf,  that  will
              hold the configuration for both this script, and the SOAP server of dtc-xen itself.


       Parameters and options conventions

              All  parameters  described here are mandatory. dtc_reinstall_os will exit if one of
              the parameters is  missing  from  both  the  configuration  file  /etc/dtc-xen/dtc-
              xen.conf and the command line. If a parameter is on both the configuration file and
              the command line, then the command line has priority.  The  parameters  not  marked
              like  [  this  ]  are  not  mandatory in the command line, if and only if, they are
              defined in the configuration file. If a parameter is defined in  the  configuration
              file,  then  it can be omitted from the command line.  The parameters defined above
              -like <this> are mandatory. Options are always defined with a  double  minus  sign,
              while mandatory parameters have only a single minus sign.

              All  the  parameters  defined in this section (eg: PARAMETERS) are the mandatory on
              the command line.

       -vpsid <ID>

              ID has to be a number between 01 and 99.  Each  time  a  new  VPS  is  created,  an
              associated  user  xen<ID>  will  be  created  on  the  system,  using /usr/bin/dtc-
              xen_userconsole so your users can login into  the  system.  When  they  login,  "xm
              console  xen<ID>"  will  in  fact  be  their shell, so they can access the physical
              console of the VPS using ssh.

       -ram <RAM size MB>

              This is the amount of memory in mega bytes that you want to have setup in  the  Xen
              startup file for this virtual machine.

       -nic <ip>[,<netmask>[,<broadcast>]]

              This  parameter  defines the network configuration of the virtual machine, together
              with the -gw option (see below). There can be as many -nic parameter as  you  need.
              If  there  is  more  than  one,  then  dtc_reinstall_os  will  setup a physical NIC
              configuration, and as many eth0:X virtual alias as needed to match  the  number  of
              -nic parameters on the command line.

              If the <netmask> or <broadcast> parameter is missing, then the values will be taken
              from /etc/dtc-xen/dtc-xen.conf. It is mandatory to have at least  the  netmask  and
              broadcast  defined  in  either the command line or in the configuration file. These
              variables are called NETMASK and BROADCAST in /etc/dtc-xen/dtc-xen.conf. Note  that
              each  IP address will be added to the Xen startup configuration file of the virtual
              machine, so that you can use the anti-spoof facility of the  Xen  firewall  (highly
              recommended,  if  you  are reselling VPS). See Xen documentation on how to activate
              the anti-spoof feature of xend, but in short, you should use something  like  this:
              (network-script   'network-bridge   antispoof=yes')  while  network-bridge  can  be
              replaced by  the  network  scheme  that  you  need.  DTC-Xen  will  NOT  touch  the
              /etc/xen/xend-config.sxp  file, it's up to you to customize it to your needs before
              using dtc-xen.

       -gw <gateway>

              You can then specify lvm or loopback. Currently the only value the script  compares
              to is lvm (or anything else), but this might change in the future. If omitted, then
              lvm loopback is used.

       [ -dns <dns1-ip>[,<dns2-ip>] ]

              This defines the default DNS to be setup in /etc/resolv.conf in the VPS  that  will
              be  setup.  If  not  present, then dtc-xen will use the file in /etc/resolv.conf of
              your dom0 to find the DNS to use.

       -pass <PASSWORD>

              This is the root password you wish to have setup inside the VPS. Not all  operating
              system  setup  will  support  it,  but  it's  still a mandatory parameter.  If this
              parameter is not used, then the VPS will be setup without a  root  password,  which
              is, as opposed to many people think, very fine. The user will just need to log into
              his VPS and setup the root password using the passwd utility.

       -os <unix-distribution>

              This parameter that can be debian, centos, or netbsd for a default  setup  of  dtc-
              xen.  It  can also be set to any of the folder names present in /usr/share/dtc-xen-
              os, so that dtc-xen  will  use  the  setup  script  of  the  dtc-xen-os  module  to
              initialize a partition.

              This  parameter  can  also be the name of any folder present in /usr/share/dtc-xen-
              app. These are appliances that will be installed automatically at the first boot of
              the  VPS.  They depend on the support of the unix distribution that is supported by
              dtc-xen, or any of the dtc-xen-os module installed in the system.


       If you don't set these options, then they may have to be set in /etc/dtc-xen/dtc-xen.conf.
       Some options can be omitted completely.


              Without   -v,   dtc_reinstall_os   normally  outputs  everything  in  /var/lib/dtc-
              xen/mnt/XX.stderr and /var/lib/dtc-xen/mnt/XX.stdout (or wherever you have set  the
              vps  mountpoint to be), to keep a log of the installation. With -v, the redirection
              of standard output and error is not done.

       --vnc-pass <VNCPASS>

              VNC password for the physical console of your HVM VPS. See the Xen documentation if
              you  don't  know what is HVM or full virtualization.  If this parameter is omitted,
              then the VPS will be  setup  to  NOT  use  the  VNC  server  (recommended  when  in

       --boot-iso <file.iso>

              Name  of  the  ISO file stored in /var/lib/dtc-xen/ttyssh_home/xenXX/ folder so the
              VPS can be set to boot on it. If this parameter is omitted, then the VPS will  boot
              on  the  hard drive. Note that your users would, in a normal scheme, upload the ISO
              file using FTP and the ssh physical console password they have set using  DTC.  The
              list  of  uploaded  ISO files will then be presented in the user interface. Because
              these ISO files can be sometimes big, it is advised to protect your /var filesystem
              by  using a dedicated partition for /var/lib/dtc-xen/ttyssh_home, in order to avoid
              that your users fill up the /var space with ISO files.


              Full path to the init ram disk image to setup in the startup configuration file for
              this  VPS. This parameter is normally to be defined in /etc/dtc-xen/dtc-xen.conf as
              it should normally not be changed often.


              Full path to the kernel boot image to setup in the startup configuration  file  for
              this  VPS. This parameter is normally to be defined in /etc/dtc-xen/dtc-xen.conf as
              it should normally not be changed often.


              Kernel release number that will be used when setting-up this VPS. To be  used  only
              if  you  are  using the --initrd and --kernel options, and if the release number is
              different from the one of your dom0. This will be used to run a depmod -a  <kernel-
              release-number> in the VPS partition.


              Full  path  to the kernel modules to be used when copying the kernel modules in the


       .I Example1:

              dtc_reinstall_os       -v       -vpsid        01        -ram        512        -nic
    ,,   -pass   MyRootPass   -os   debian   -gw

       This will setup the VM called xen01, build it's startup file in /etc/xen/xen01 with a  vif
       containing  ip=  and 512 MB of RAM, setting-up a debian operating system with
       the  /etc/network/interfaces  using  as  IP,   as   netmask, as broadcast, as gateway, and as DNS.

       .I Example2:

              dtc_reinstall_os  -vpsid  02  -ram  1024  -nic  -nic  -gw
     -pass MyRootPass -os kde-nx-server-3.3.0

       This will setup the VM called xen02, build it's startup file in /etc/xen/xen02 with a  vif
       containing  ip=  and and 1 GB of RAM, setting-up a debian operating
       system with the /etc/network/interfaces using as IP  for  eth0,  and  eth0:1
       with  The gateway will be used for eth0, the broadcast, network,
       and netmask addresses will be used from the default in /etc/dtc-xen/dtc-xen.conf (as  they
       are  omitted  here,  it's  mandatory  that  this config file has been edited to match your
       network and in order to use dtc_reinstall_os this way). The dom0 /etc/resolv.conf will  be
       used to set the VPS's /etc/resolv.conf.


       dtc_setup_vps_disk(8), dtc_kill_vps_disk(8)


       This documentation describes dtc_reinstall_os version 0.3.15.

       See for updates.