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Re: [Xen-API] Connect to XCP/Ubuntu12.04 with Xencenter

Thanks for the advice.

Turns out that Dom0 network works again after I remove the eth0 section in 
/etc/network/interfaces. So now xenbr0 is manually configured while eth0 is 

Next thing will be to try and connect using XenCenter and carry on 
configuration from there.
By the way, during the shutdown process, there is this error message saying 
that a different tool stack (xapi) have been selected. Not sure if this will 
affect the XenCenter connection or if it's a known bug.

On May 20, 2012, at 5:58 PM, Wannes De Smet wrote:

> On 14 May 2012, at 08:54, Sum Thai Wong wrote:
>> I have followed this tutorial to setup the XCP toolstack (Project Kronos) on 
>> a Ubuntu 12.04 LTS minimal server (installed using mini.iso)
>> http://wiki.xen.org/wiki/XAPI_on_Ubuntu
>> For network bridging, I have chosen to use the openvswitch mode. After 
>> installation, two bridges were automatically created(xenbr0 and xenbr1) as I 
>> have two ethernet interfaces (eth0 and eth1). Using the command "xe 
>> pif-param-list uuid=….", I checked that the first pif was designated as the 
>> management interface.
> Does /etc/xcp/inventory exist and contain MANAGEMENT_INTERFACE='xenbr0'? If 
> not, see [1].
>> This interface has a static IP, gateway but no DNS. The second pif was 
>> unconfigured. I had intended to connect with XenCenter to continue the setup 
>> steps to create the storage repository(SR) but the connection could not be 
>> created although I can ping the Xen host. The host firewall has been turned 
>> off.
>> Hence I have the following questions:
>> 1. Is it necessary to create the SR before I can connect with XenCenter?
> No.
>> 2. I can't access the network (internal and external) from Dom0 via the 
>> management interface. Is this by design? Do I have to setup the second 
>> interface for Dom0 to gain network connectivity?
> Have you configured eth0 with xe pif-reconfigure-ip [2] ? Doing it manually 
> (e.g. in /etc/network/interfaces) won't do, as it's xcp-networkd who 
> configures networking after boot. Leave nothing but the loopback interface 
> config in the interfaces file.
> Secondly, could you verify whether xenbr0 has an IP address and eth0 does 
> not? If eth0 is active, perform 'ifconfig eth0' to remove its IP 
> address. If xenbr0 does not have an IP address, restart xcp-networkd and 
> xcp-xapi, that should help.
>> 3. What user should I use to connect with XenCenter? I have tried using 
>> root, but is this the same account as the system root? In this case, neither 
>> my root password or null password work.
> root will do fine.
>> Thanks in advance for your help.
> Protip ®: You won't be able to start VM's just yet because 
> /etc/xen/scripts/qemu-ifup is not written for using Open vSwitch. Replace the 
> last line with 'ovs-vsctl add-port $2 $1' and have a go.
> Wannes
> [1] 
> http://wiki.xen.org/wiki/XCP_toolstack_on_a_Debian-based_distribution#Setup_the_xensource-inventory_file
> [2] 
> http://wiki.xen.org/wiki/XCP_toolstack_on_a_Debian-based_distribution#Setup_the_network.2Finterfaces_file
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