[libvirt] FW: Bringing up LXC container from virsh command prompt.

Hi Daniel, One more thing is that in my host machine vibr0 inteface is missing. Because of the the 'default' network is in 'inactive' state and if I tried to activate, it's giving the following error: error: Failed to start network default error: internal error '/usr/sbin/dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file= --listen-address 192.168.122.1 --except-interface lo --dhcp-range 192.168.122.2,192.168.122.254' exited with non-zero status 2 and signal 0: dnsmasq: failed to bind listening socket for 192.168.122.1: Address already in use Can you please guide me in this regard? Regards, Srikanth. -----Original Message----- From: Kumar L Srikanth-B22348 Sent: Thursday, March 04, 2010 4:43 PM To: 'Daniel P. Berrange' Cc: libvir-list(a)redhat.com; Reddy B Veera-B22347 Subject: RE: Bringing up LXC container from virsh command prompt. Hi, I want to create eth0 network interface in the container, which is linked to br0 bridge in the host machine. For that, I have created a bridge 'br0' with the IP '172.16.1.10'. Now, I want to create a network interface eth0 in the container with the IP '172.16.1.17'. I created the following network XML for the above requirement. <network> <name>mynetwork</name> <uuid>3e3fce45-4f53-4fa7-bb32-11f34168b82b</uuid> <bridge name="br0" stp="on" delay="5"/> <forward mode="nat" dev="eth0"/> <ip address="172.16.1.17" netmask="255.255.255.0"/> </network> I am able to define the network, but unable to start the network. The following error is coming when I start the network with the following command: #virsh -c lxc:/// net-start mynetwork error: Failed to start network mynetwork error: cannot create bridge 'br0': File exists Can you please guide me to create a network? My network interfaces in the host machine is shown below: br0 Link encap:Ethernet HWaddr 00:50:BF:27:AA:60 inet addr:172.16.1.10 Bcast:172.16.255.255 Mask:255.255.0.0 inet6 addr: fe80::250:bfff:fe27:aa60/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:80728 errors:0 dropped:0 overruns:0 frame:0 TX packets:170078 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:54037401 (51.5 MiB) TX bytes:123567268 (117.8 MiB) eth0 Link encap:Ethernet HWaddr 00:50:BF:27:AA:60 inet6 addr: fe80::250:bfff:fe27:aa60/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:288 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:30108 (29.4 KiB) Interrupt:21 Base address:0x1140 eth1 Link encap:Ethernet HWaddr 00:16:76:4B:91:DC inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) eth2 Link encap:Ethernet HWaddr 00:11:95:FC:8D:62 inet addr:10.232.113.80 Bcast:10.232.113.255 Mask:255.255.254.0 inet6 addr: fe80::211:95ff:fefc:8d62/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:563988 errors:0 dropped:0 overruns:0 frame:0 TX packets:391293 errors:1100 dropped:0 overruns:0 carrier:1100 collisions:188525 txqueuelen:1000 RX bytes:565906426 (539.6 MiB) TX bytes:234291753 (223.4 MiB) Interrupt:22 Base address:0xa000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:23001 errors:0 dropped:0 overruns:0 frame:0 TX packets:23001 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3478027 (3.3 MiB) TX bytes:3478027 (3.3 MiB) Regards, Srikanth. -----Original Message----- From: Daniel P. Berrange [mailto:berrange@redhat.com] Sent: Thursday, March 04, 2010 3:41 PM To: Kumar L Srikanth-B22348 Cc: libvir-list(a)redhat.com; Reddy B Veera-B22347 Subject: Re: Bringing up LXC container from virsh command prompt. On Thu, Mar 04, 2010 at 03:38:43PM +0530, Kumar L Srikanth-B22348 wrote: The lxc-XXX tools are completely unrelated. They have a configuration file where you specify what network interfaces are created. Likewise if you use libvirt you need to specify what network interfaces are to be created. You need to setup $PATH in your container. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|