Hi Team, Could you pleas help us with below questions.
Thanks, -Vladimir On May 16, 2011, at 8:50 PM, "Alex Lyakas" <[email protected]> wrote: > I am trying to achieve a two-node nova installation using FlatDHCP network > manager. On node-A, I have two network interfaces: eth0 is connected to > public network, while eth1 is unconfigured (just as the administration manual > recommends). I start all nova services on node-A. I see that a br100 bridge > is created, eth1 is added to that bridge, and the bridge receives an IP > address within the project network (which is a part of a fixed range). When I > spawn instances on node-A, everything works fine: the instance receives an IP > address within the project network, I can ssh into it from within node-A. I > can also assign a floating IP within my public network to the instance. Then > I am able to ssh into the instance from anywhere. > > On node-B, I have only the nova-compute running. Node-B has also eth0 and > eth1 interfaces. Similar to node-A, eth0 has a public address and eth1 is > unconfigured. Whenever I spawn an instance on node-B, I see that br100 is > also created on node-B, and eth1 is added to it. However, I am unable to ssh > into the instance. I am able to connect to the instance via VNC. Then I see > that it has not received an IP address (the instance image is configured to > use DHCP). I understand that the instance should receive an address from > nova-network via DHCP. > > My questions are: > How the br100 bridge on node-B should connect to br100 on Node-A? Should > nova-network connect them somehow, or do I need to do something manually? > I assume that if br100s were connected on both nodes, things would have > worked, but perhaps I am wrong. > Looking at the code of FlatDHCPManager, I see that in setup_compute_network() > method, ensure_bridge() is called without the ‘net_attrs’ parameter, and > so the following code is not executed: > if net_attrs: > # NOTE(vish): The ip for dnsmasq has to be the first address on the > # bridge for it to respond to reqests properly > suffix = net_attrs['cidr'].rpartition('/')[2] > out, err = _execute('sudo', 'ip', 'addr', 'add', > "%s/%s" % > (net_attrs['gateway'], suffix), > 'brd', > net_attrs['broadcast'], > 'dev', > bridge, > check_exit_code=False) > > while on the node-A with nova-network, this code is executed, and an entry > added to the routing table. I tried to do this code manually on node-B, but > still I am unable to ssh into the instance. >
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