July 2011
Intermediate to advanced
88 pages
1h 52m
English
Content preview from Deploying OpenStackBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Launching Instances
Now that we have a valid user and virtual disk image, we are ready to launch our first Nova instance. But before we start spinning up instances, we need to make a keypair so that we will be able to log in to the new instance via ssh. To create your keypair, use the euca-add-keypair tool:
# euca-add-keypair ken > ken.pem # chmod 600 ken.pem
Now that we have the key, let’s launch an instance. Launching an instance via the EC2 API requires three arguments: your keypair name (not the filename “ken.pem”, just “ken”), the size (although it will default to “m1.tiny”), and the machine image name (we’ll use our previously uploaded “ami-6683ba18” image):
# euca-run-instances -k ken -t m1.tiny ami-6683ba18 RESERVATION r-1pkchwbm book default INSTANCE i-00000001 ami-6683ba18 scheduling ken (book, None) 0 m1.tiny 2011-07-04T20:28:51Z unknown zone
As you can see from the output from euca-run-instances, our instance has been
launched and it is currently in the 'scheduling' state. If we wait a few minutes and
everything goes well, it should progress to the 'running' state. We can check on its progress
through the EC2 API with the euca-describe-instances command:
# euca-describe-instances RESERVATION r-1pkchwbm book default INSTANCE i-00000001 ami-6683ba18 10.0.0.2 10.0.0.2 running ken (book, nova-controller) 0 m1.tiny 2011-07-04T20:28:51Z nova
We can also use the nova utility
to make the same query through the OpenStack API. With this tool, you are
looking for the 'ACTIVE' status: ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.