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Managing your cloud resources with OpenStack: Difference between revisions
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Managing your cloud resources with OpenStack (view source)
Revision as of 16:58, 24 August 2018
, 6 years agoAdded section on resizing VMs
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(Added section on resizing VMs) |
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{{Command|qemu-img convert -f qcow2 vdisk.qcow2 -O vmdk vdisk.vmdk}} | {{Command|qemu-img convert -f qcow2 vdisk.qcow2 -O vmdk vdisk.vmdk}} | ||
Then you can create a new virtual machine and attach the vmdk image to it (see [http://techathlon.com/how-to-run-a-vmdk-file-in-oracle-virtualbox/ how to run a vmdk file in virtualbox] for detailed instructions on this). | Then you can create a new virtual machine and attach the vmdk image to it (see [http://techathlon.com/how-to-run-a-vmdk-file-in-oracle-virtualbox/ how to run a vmdk file in virtualbox] for detailed instructions on this). | ||
=Resizing VMs= | |||
It is possible to resize a VM by changing its flavor. However, there are some things to be aware of when choosing to resize a VM which depends on whether you have a "p" flavor or a "c" flavor VM (see [[Virtual machine flavors]]). Resizing a VM may involve some risk as it is similar to deleting and recreating your VM with a new flavor, if in doubt contact cloud [[technical support]]. | |||
==c flavors== | |||
"c" flavors often have extra ephemeral drives, which will be resized when you choose a new "c" flavor. These ephemeral drives can not become smaller, and as such "c" flavor VMs can only be resized to flavors with equal or larger ephemeral drives. After the resize however, you will not immediately see a larger ephemeral drive within your VM (e.g. the [https://en.wikipedia.org/wiki/Df_(Unix) <code>df -h</code>] command will not show the size increase). To see this extra space you will need to resize your file system (see the [https://linux.die.net/man/8/resize2fs <code>resize2fs</code>] command). However, filesystem resizes should be treated with caution and can take considerable time if the partitions are large. Before resizing a filesystem it is recommend to create backups of its contents (see [[backing up your VM]]). | |||
==p flavors== | |||
Unlike "c" flavors, "p" flavors do not typically have extra ephemeral drives associated with them, so they can be resized to larger and smaller flavors. | |||
=Linux VM User Management= <!--T:28--> | =Linux VM User Management= <!--T:28--> | ||