Hello,
Have read nice article about CS and advanced network set-up here:
http://shapeblue.com/cloudstack/understanding-cloudstacks-physical-networking-architecture/,
but have problem with routing.
Let me say I have only 1 NIC with all the trunks 100, 200, 300
configured as in KVM configuration guide
(http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/latest/hypervisor/kvm.html
).
· cloudbr (no tag) top-level bridge for trunks mgmt0, cloudbr0,
cloudbr1.
· mgmt0 (VLAN 100) bridge has 172.17.1.2 adress and is responsible for
hosts network 172.17.1.0/24.
· cloudbr0 (VLAN 200) bridge does not have any IP address and is
responsible for public network (not used if „security group“ is enabled)
· cloudbr1 (VLAN 300) bridge does not have any IP address and is
responsible for guest network 192.168.1.0/24
· cloud0 (no tag) – system bridge that is created by cloudstack-agent
during host registration. Has IP 169.254.0.1 and manages local-link network
169.254.0.0/16. Acts as gateway for 169.254.0.0 network
After setting up cloudstack every system VM gets basically 3 IPs (no problem
with this):
1. link local IP, for example: 169.254.0.10
2. private IP, for example: 172.17.1.105
3. public IP, for example: 192.168.1.5 (gw 192.168.1.1 is defined during CS
installation, but physically does not present anywhere)
There is no problem to communicate within networks 1 and 2, because first one
configures cloudstack itself and host network is configured by switch KVM host
is connected to.
The only question so far: where to configure routing for 3rd network (if it is
possible)? I got error „no route to host“ from SSVM, because default route is
trough 192.168.1.0 network. May be NAT is needed? Can I define private and
public networks from different sub-nets ? Should I configure cloudbr1 IP
manually ? Or there is something else?
Thank you,
Vadim
