Things are about to get real! Using OpenStack in containers or VMs isnice for kicking the tires, but doesn’t compare to the feeling you getwith hardware.
Prerequisites Linux & Network¶
Minimal Install¶
You need to have a system with a fresh install of Linux. You candownload the MinimalCD forUbuntu releases since DevStack will download & install all theadditional dependencies. The netinstall ISO is available forFedoraandCentOS/RHEL.You may be tempted to use a desktop distro on a laptop, it will probablywork but you may need to tell Network Manager to keep its fingers offthe interface(s) that OpenStack uses for bridging.
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Network Configuration¶
Determine the network configuration on the interface used to integrateyour OpenStack cloud with your existing network. For example, if the IPsgiven out on your network by DHCP are 192.168.1.X - where X is between100 and 200 you will be able to use IPs 201-254 for floating ips.
To make things easier later change your host to use a static IP insteadof DHCP (i.e. 192.168.1.201).
Installation shake and bake¶
Add your user¶
We need to add a user to install DevStack. (if you created a user duringinstall you can skip this step and just give the user sudo privilegesbelow)
Floating Ips Download
Since this user will be making many changes to your system, it will needto have sudo privileges:
Note
On some systems you may need to use
sudovisudo
.From here on you should use the user you created. Logout andlogin as that user:
Download DevStack¶
We’ll grab the latest version of DevStack via https:
Run DevStack¶
Now to configure
stack.sh
. DevStack includes a sample indevstack/samples/local.conf
. Create local.conf
as shown below todo the following:- Set
FLOATING_RANGE
to a range not used on the local network, i.e.192.168.1.224/27. This configures IP addresses ending in 225-254 tobe used as floating IPs. - Set
FIXED_RANGE
to configure the internal address space used by theinstances. - Set the administrative password. This password is used for theadmin and demo accounts set up as OpenStack users.
- Set the MySQL administrative password. The default here is a randomhex string which is inconvenient if you need to look at the databasedirectly for anything.
- Set the RabbitMQ password. Always sunny charlies play.
- Set the service password. This is used by the OpenStack services(Nova, Glance, etc) to authenticate with Keystone.
local.conf
should look something like this:Note
Smw Central Floating Ips
There is a sample
local.conf
fileunder the samples directory in the devstack repository.Run DevStack:
A seemingly endless stream of activity ensues. When complete you willsee a summary of
stack.sh
’s work, including the relevant URLs,accounts and passwords to poke at your shiny new OpenStack.Using OpenStack¶
At this point you should be able to access the dashboard from othercomputers on the local network. In this example that would behttp://192.168.1.201/ for the dashboard (aka Horizon). Launch VMs and ifyou give them floating IPs and security group access those VMs will beaccessible from other machines on your network.