centos cloud image

1. What is CentOS generic cloud?
2. Does CentOS support cloud-init?
3. How do I download qcow2 images?
4. What is qcow2 openstack?
5. What is cloud-init Ubuntu?
6. What is a QCOW2 file?
7. What is cloud init in Azure?
8. What is cloud init?
9. How do I know if cloud INIT is installed?
10. How do I use qcow2 image in vmware?
11. How do I create a Glance image?
12. Is qcow2 compressed?

What is CentOS generic cloud?

We will use the CentOS generic cloud image called “CentOS-7-x86_64-GenericCloud. Create a snapshot so that we can branch from this disk image without affecting the parent. ... We will also use this opportunity to increase the root filesystem from 8G to 10G.

Does CentOS support cloud-init?

CentOS Support For cloud-init Modules. ... cfg file from the cloud-init 0.7. 5 source RPM to the config/cloud. cfg file within the cloud-init-0.7.

How do I download qcow2 images?

How to Upload and Download Cloud Image in OpenStack

1. # openstack image create –disk-format qcow2 –container-format bare –public –file Name-Cloud-Image.qcow2 <Name-of-Image>
2. # openstack image delete <Image-Name-or-Image-ID>
3. # glance image-download –file <Name-of-Cloud-Image> –progress <Image_ID>

What is qcow2 openstack?

In short ISO is an optical disk image file whereas qcow2 is the partition/filesystem where an OS is already installed and can be used as template for spinning instances of the same OS type.

What is cloud-init Ubuntu?

cloud-init is the Ubuntu package that handles early initialization of a cloud instance. It is installed in the official Ubuntu live server images since the release of 18.04, Ubuntu Cloud Images and also in the official Ubuntu images available on EC2.

What is a QCOW2 file?

QCOW2 is a storage format for virtual disks. QCOW stands for QEMU copy-on-write. The QCOW2 format decouples the physical storage layer from the virtual layer by adding a mapping between logical and physical blocks.

What is cloud init in Azure?

cloud-init is a widely used approach to customize a Linux VM as it boots for the first time. You can use cloud-init to install packages and write files, or to configure users and security.

What is cloud init?

Cloud-init is the industry standard multi-distribution method for cross-platform cloud instance initialization. It is supported across all major public cloud providers, provisioning systems for private cloud infrastructure, and bare-metal installations.

How do I know if cloud INIT is installed?

4 Answers. You can check the /var/lib/cloud/data/status. json for cloud-init status. Or if the host is using upstart, add one init process in /etc/init/newprocess.

How do I use qcow2 image in vmware?

Time to attach the correct one. Edit settings for the VM and add a new device -> existing hard disk -> then select the vmdk we converted with vmkfstools above. Make any other changes and you should now be good to go. Remember to install vmware-tools on the VM and possibly remove qemu-guest as well!

How do I create a Glance image?

1. Add the kernel and ramdisk images to the Image service: $ glance image-create --name my-kernel --visibility public \ --disk-format aki --container-format aki < my-image.vmlinuz. ...
2. Add the my-image to the Image service which is going to be the OS that the user is going to run.

Is qcow2 compressed?

Only the qcow2 format supports encryption or compression. qcow2 encryption uses the AES format with secure 128-bit keys. qcow2 compression is read-only, so if a compressed sector is converted from qcow2 format, it is written to the new format as uncompressed data.