[Xen-users] missing vif-script in /etc/xen/xend-config.sxp file

[amina elbekkali <aelbekkali@xxxxxxxxx>]

when i create a virtual machine an error message appear at the begining of the installation:

You appear to have a missing vif-script, or network-script, in the

 Xen configuration file /etc/xen/xend-config.sxp.

 

 Please fix this and restart Xend, or your guests will not be able

 to use any networking!

i'm using the bridge configuration, and here the content of the  file  /etc/xen/xend-config.sxp "the too lines ;(vif-script vif-bridge) ; (network-script network-bridge) are decommented :

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# -*- sh -*-

#

# Xend configuration file.

#

# This example configuration is appropriate for an installation that 

# utilizes a bridged network configuration. Access to xend via http

# is disabled.  

# Commented out entries show the default for that entry, unless otherwise

# specified.

#(logfile /var/log/xen/xend.log)

#(loglevel DEBUG)

# The Xen-API server configuration.  (Please note that this server is

# available as an UNSUPPORTED PREVIEW in Xen 3.0.4, and should not be relied

# upon).

#

# This value configures the ports, interfaces, and access controls for the

# Xen-API server.  Each entry in the list starts with either unix, a port

# number, or an address:port pair.  If this is "unix", then a UDP socket is

# opened, and this entry applies to that.  If it is a port, then Xend will

# listen on all interfaces on that TCP port, and if it is an address:port

# pair, then Xend will listen on the specified port, using the interface with

# the specified address.

#

# The subsequent string configures the user-based access control for the

# listener in question.  This can be one of "none" or "pam", indicating either

# that users should be allowed access unconditionally, or that the local

# Pluggable Authentication Modules configuration should be used.  If this

# string is missing or empty, then "pam" is used.

#

# The final string gives the host-based access control for that listener. If

# this is missing or empty, then all connections are accepted.  Otherwise,

# this should be a space-separated sequence of regular expressions; any host

# with a fully-qualified domain name or an IP address that matches one of

# these regular expressions will be accepted.

#

# Example: listen on TCP port 9363 on all interfaces, accepting connections

# only from machines in example.com or localhost, and allow access through

# the unix domain socket unconditionally:

#

#   (xen-api-server ((9363 pam '^localhost$ example\\.com$')

#                    (unix none)))

#

# Optionally, the TCP Xen-API server can use SSL by specifying the private

# key and certificate location:

#

#                    (9367 pam '' /etc/xen/xen-api.key /etc/xen/xen-api.crt)

#

# Default:

#   (xen-api-server ((unix)))

#(xend-http-server no)

#(xend-unix-server no)

#(xend-tcp-xmlrpc-server no)

#(xend-unix-xmlrpc-server yes)

#(xend-relocation-server no)

#(xend-unix-path /var/lib/xend/xend-socket)

# Address and port xend should use for the legacy TCP XMLRPC interface, 

# if xen-tcp-xmlrpc-server is set.

#(xen-tcp-xmlrpc-server-address 'localhost')

#(xen-tcp-xmlrpc-server-port 8006)

# SSL key and certificate to use for the legacy TCP XMLRPC interface.

# Setting these will mean that this port serves only SSL connections as

# opposed to plaintext ones.

#(xend-tcp-xmlrpc-server-ssl-key-file  /etc/xen/xmlrpc.key)

#(xend-tcp-xmlrpc-server-ssl-cert-file /etc/xen/xmlrpc.crt)

# Port xend should use for the HTTP interface, if xend-http-server is set.

#(xend-port            8000)

# Port xend should use for the relocation interface, if xend-relocation-server

# is set.

#(xend-relocation-port 8002)

# Address xend should listen on for HTTP connections, if xend-http-server is

# set.

# Specifying 'localhost' prevents remote connections.

# Specifying the empty string '' (the default) allows all connections.

#(xend-address '')

#(xend-address localhost)

# Address xend should listen on for relocation-socket connections, if

# xend-relocation-server is set.

# Meaning and default as for xend-address above.

#(xend-relocation-address '')

# The hosts allowed to talk to the relocation port.  If this is empty (the

# default), then all connections are allowed (assuming that the connection

# arrives on a port and interface on which we are listening; see

# xend-relocation-port and xend-relocation-address above).  Otherwise, this

# should be a space-separated sequence of regular expressions.  Any host with

# a fully-qualified domain name or an IP address that matches one of these

# regular expressions will be accepted.

#

# For example:

#  (xend-relocation-hosts-allow '^localhost$ ^.*\\.example\\.org$')

#

#(xend-relocation-hosts-allow '')

# The limit (in kilobytes) on the size of the console buffer

#(console-limit 1024)

##

# To bridge network traffic, like this:

#

# dom0: ----------------- bridge -> real eth0 -> the network

#                            |

# domU: fake eth0 -> vifN.0 -+

#

# use

#

 (network-script network-bridge)

# Your default ethernet device is used as the outgoing interface, by default. 

# To use a different one (e.g. eth1) use

#

# (network-script 'network-bridge netdev=eth1')

#

# The bridge is named xenbr0, by default.  To rename the bridge, use

#

# (network-script 'network-bridge bridge=<name>')

#

# It is possible to use the network-bridge script in more complicated

# scenarios, such as having two outgoing interfaces, with two bridges, and

# two fake interfaces per guest domain.  To do things like this, write

# yourself a wrapper script, and call network-bridge from it, as appropriate.

#

#(network-script network-dummy)

# The script used to control virtual interfaces.  This can be overridden on a

# per-vif basis when creating a domain or a configuring a new vif.  The

# vif-bridge script is designed for use with the network-bridge script, or

# similar configurations.

#

# If you have overridden the bridge name using

# (network-script 'network-bridge bridge=<name>') then you may wish to do the

# same here.  The bridge name can also be set when creating a domain or

# configuring a new vif, but a value specified here would act as a default.

#

# If you are using only one bridge, the vif-bridge script will discover that,

# so there is no need to specify it explicitly.

#

(vif-script vif-bridge)

## Use the following if network traffic is routed, as an alternative to the

# settings for bridged networking given above.

#(network-script network-route)

#(vif-script     vif-route)

## Use the following if network traffic is routed with NAT, as an alternative

# to the settings for bridged networking given above.

#(network-script network-nat)

#(vif-script     vif-nat)

# Dom0 will balloon out when needed to free memory for domU.

# dom0-min-mem is the lowest memory level (in MB) dom0 will get down to.

# If dom0-min-mem=0, dom0 will never balloon out.

(dom0-min-mem 196)

# In SMP system, dom0 will use dom0-cpus # of CPUS

# If dom0-cpus = 0, dom0 will take all cpus available

(dom0-cpus 0)

# Whether to enable core-dumps when domains crash.

#(enable-dump no)

# The tool used for initiating virtual TPM migration

#(external-migration-tool '')

# The interface for VNC servers to listen on. Defaults

# to 127.0.0.1  To restore old 'listen everywhere' behaviour

# set this to 0.0.0.0

#(vnc-listen '127.0.0.1')

# The default password for VNC console on HVM domain.

# Empty string is no authentication.

(vncpasswd '')

# The VNC server can be told to negotiate a TLS session

# to encryption all traffic, and provide x509 cert to

# clients enalbing them to verify server identity. The

# GTK-VNC widget, virt-viewer, virt-manager and VeNCrypt

# all support the VNC extension for TLS used in QEMU. The

# TightVNC/RealVNC/UltraVNC clients do not.

#

# To enable this create x509 certificates / keys in the

# directory /etc/xen/vnc

#

#  ca-cert.pem       - The CA certificate

#  server-cert.pem   - The Server certificate signed by the CA

#  server-key.pem    - The server private key

#

# and then uncomment this next line

# (vnc-tls 1)

# The certificate dir can be pointed elsewhere..

#

# (vnc-x509-cert-dir /etc/xen/vnc)

# The server can be told to request & validate an x509

# certificate from the client. Only clients with a cert

# signed by the trusted CA will be able to connect. This

# is more secure the password auth alone. Passwd auth can

# used at the same time if desired. To enable client cert

# checking uncomment this:

#

# (vnc-x509-verify 1)

# The default keymap to use for the VM's virtual keyboard

# when not specififed in VM's configuration

#(keymap 'en-us')

# Script to run when the label of a resource has changed.

#(resource-label-change-script '')

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Could anyone help?

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