Introduction
In this blog post, you’ll learn how to create instances in the Cloud&Heat Technologies Horizon dashboard or via the OpenStack CLI.
Requirements
- The network configuration from Chapter 3 of the blog post should be completed
- If you need custom images, first follow the steps in Chapter 4 of the blog post, to import this
- The configuration of the security groups and the SSH keys, as described in Chapter 5 of the blog post as described, should be completed
Create an instance
You can view your instances under the menu option Compute > Instances.
Creates a new instance using the button Start instance. Please specify at least the instance name and the number of instances.
Continue configuring the image to be selected for the instances. Here, you can choose from the Managed Cloud&Heat images or an imported image.
Select a suitable option from the list.
And select a suitable network from the list.
Then assign the necessary security groups.
And finally, assign your SSH key so that you can use it directly within the instance to authenticate via SSH.
Alternatively, you can also use the OpenStack CLI:
openstack server create \
--flavour M \
--image 'Debian 13' \
--key-name my-ssh-key-name \
--network demo-network \
--security-group default --security-group ssh --security-group ping
myinstance
Assign a floating IP address
Following the steps outlined above, the instance is located on an internal network that is not yet accessible from outside. To make the instance publicly accessible, you can assign a floating IP. You can do this very easily via the drop-down menu in the instance overview.
Your floating IP should now be assigned to your instance. By following the steps outlined in this blog post, you have created an instance that can be accessed from the internet via SSH and PING.
Connection test
If you have followed all the steps as described, your instance should now be accessible via SSH and respond to pings. Try connecting to the instance via SSH and sending a ping to it:
ping
ssh root@
Depending on which option you have chosen, a standard user can also, for example, debian or ubuntu be.
You can find further tutorials on working with OpenStack cloud environments here.
Max Böttcher
