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Open Stack Installation on a 3 node VM with single network
One of the most common problem faced by user while setting up a 3 node open stack installtion is unavailability of 3 different types of network as listed in the open stack documentation. The document suggests to have 3 networks namely management network, instance tunnel network and external network. While setting up open stack on your laptop or desktop it is not possible to have 3 NIC cards which could provide 3 types of network as listed. In the following sections I will provide some tips to achieve the same while running in on your laptop or desktop.
I have used Ubuntu 14.04 with 8 GB RAM for that. My physical router distributes IP with the following CIDR 10.0.0.0/24. Install Virtual Box and fork out 3 VM's with Bridge Network and promiscious mode set as "Allow All". Here is how the VM configuration would look like
VM1
- HostName - openstackcontroller
- RAM - 1 GB
- HDD - 8 GB
- CPU - 1
- Network Adapter - 1 nos
VM2
- HostName - openstacknetwork
- RAM - 512 MB
- HDD - 8 GB
- CPU - 1
- Network Adapter - 3 nos
VM3
- HostName - openstackcompute
- RAM - 4 GB
- HDD - 8 GB
- CPU - 1
- Network Adapter - 2 nos
Once your VM is up and running setup static IP addresses for all the adapter in each of the VM except eth2 in openstacknetwork host. Here is how you can go about it
Openstackcontroller node
Modify /etc/network/interfaces as follows: auto lo iface lo inet loopback
auto eth0 iface eth0 inet static address 10.0.0.100 network 10.0.0.0 netmask 255.255.255.0 broadcast 10.0.0.255 gateway 10.0.0.1
Openstacknetwork node auto lo iface lo inet loopback
auto eth0 iface eth0 inet static address 10.0.0.103 network 10.0.0.0 netmask 255.255.255.0 broadcast 10.0.0.255 gateway 10.0.0.1
auto eth1 iface eth1 inet static address 10.0.0.104 netmask 255.255.255.0
auto eth2 iface eth2 inet manual up ip link set dev $IFACE up down ip link set dev $IFACE down