Klever

• --flavor argument of the klever-deploy-openstack script is replaced by --vcpus , --ram and --disk arguments
• default values for these arguments are: vcpus = 8 cores, ram = vcpus * 4 (if vcpus = 8, then ram = 32GB) and disk = 200GB
• Klever instances almost always use 200GB disks , so you can leave this argument at its default value
• RAM is calculated automatically based on VCPUs number, so unless you require some specific flavor - you should also leave this argument as is
• so, the only argument, that will be realistically used: --vcpus , or amount of virtual CPU cores in the instance

Usage examples:

Create new instance with 16 cores, 64GB of RAM and 200GB disk:

klever-deploy-openstack --name "klever-10767" --vcpus 16 create instance

This is also equivalent to:

klever-deploy-openstack --name "klever-10767" --vcpus 16 --ram 64 --disk 200 create instance

Created instance can be resized by specifying new flavor (this will migrate instance to new host, so be sure that there are no running jobs):

klever-deploy-openstack --name "klever-10767" --vcpus 2 resize instance

If OpenStack doesn't contain flavor with required parameters (for example, there is no flavor with 4 VCPUs, 16GB of RAM and 200GB of disk space), then klever-deploy-openstack script will terminate, but print available flavors for you.

I tested resizing and everything seems to work well, so, I merged the branch to master in 80d486505. When #10768 will be solved, we will be able to create and use OpenStack instances very reliably and efficiently.