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brctl
In a standard setup, all the Xen VM Guest systems are attached to a virtual network
bridge.
brctl
allows you to determine the connection between the bridge and the
virtual network adapter in the VM Guest system. For example, the output of
brctl
show
may look like the following:
bridge name
bridge id
STP enabled
interfaces
br0
8000.000476f060cc
no
eth0
vif1.0
br1
8000.00001cb5a9e7
no
vlan22
This shows, that there are two virtual bridges defined on the system. One is con-
nected to the physical ethernet device
eth0
, the other one is connected to a vlan
interface
vlan22
.
There is only one guest interface active in this setup,
vif1.0
. This means, that
the guest with id 1 has an ethernet interface
eth0
assigned, that is connected to
br0
in the VM Host Server.
iptables-save
Especially when using masquerade networks, or if several ethernet interfaces are
set up together with a firewall setup, it may be helpful to check the current firewall
rules.
The command
iptables
may be used to check all the different firewall settings.
To list all the rules of a chain, or even of the complete setup, you may use the
commands
iptables-save
or
iptables -S
9.6 Extra Guest Descriptions in Xen
Configuration
With Xen, it is possible to add an extra descriptions to the configuration of each guest.
This may be helpful for example to document the purpose of the guest, or the responsible
person to handle the guest.
The description can be set during the installation of the guest. When running
vm-install
, in the Summary screen you can set the Name of Virtual Machine. The
Administration Tasks
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Содержание LINUX ENTERPRISE 11 SP1 - LINUX AUDIT
Страница 1: ...SUSE Linux Enterprise Desktop www novell com 11 SP1 August 18 2010 Virtualization with Xen ...
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Страница 11: ...Part I Getting Started with Xen ...
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Страница 17: ...Figure 1 2 Desktop Showing Virtual Machine Manager and Virtual Machines Introduction to Xen Virtualization 7 ...
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Страница 41: ...Part II Advanced Configurations ...
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Страница 87: ...Part III Administration and Best Practices ...
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Страница 117: ...Part IV Appendix ...
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