122 lines
5.1 KiB
Markdown
122 lines
5.1 KiB
Markdown
How to create instance snapshot using OpenStack CLI on CloudFerro Cloud[🔗](#how-to-create-instance-snapshot-using-openstack-cli-on-brand-name "Permalink to this headline")
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===========================================================================================================================================================================
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In this article, you will learn how to create instance snapshot on CloudFerro Cloud cloud, using OpenStack CLI.
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Instance snapshots allow you to archive the state of the virtual machine. You can, then, use them for
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> * backup,
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> * migration between clouds
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> * disaster recovery and/or
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> * cloning environments for testing or development.
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We cover both types of storage for instances, *ephemeral* and *persistent*.
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The plan[🔗](#the-plan "Permalink to this headline")
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---------------------------------------------------
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In reality, you will be using the procedures described in this article with the already existing instances.
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However, to get a clear grasp of the process, while following this article you are going to create two new instances, one with *ephemeral* and the other with *persistent* type of storage. Let their names be **instance-which-uses-ephemeral** and **instance-which-uses-volume**. You will create an instance snapshot for each of them.
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If you are only interested in one of these types of instances, you can follow its respective section of this text.
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It goes without saying that after following a section about one type of virtual machine you can clean up the resources you created to, say, save costs.
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Or you can keep them and use them to create an instance out of it using one of articles mentioned in What To Do Next.
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What We Are Going To Cover[🔗](#what-we-are-going-to-cover "Permalink to this headline")
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---------------------------------------------------------------------------------------
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Prerequisites[🔗](#prerequisites "Permalink to this headline")
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-------------------------------------------------------------
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No. 1 **Account**
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You need a CloudFerro Cloud hosting account with access to the Horizon interface: <https://horizon.cloudferro.com>.
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No. 2 **Ephemeral storage vs. persistent storage**
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Please see article [Ephemeral vs Persistent storage option Create New Volume on CloudFerro Cloud](../datavolume/Ephemeral-vs-Persistent-storage-option-Create-New-Volume-on-CloudFerro-Cloud.html.md) to understand the basic difference between ephemeral and persistent types of storage in OpenStack.
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No. 3 **Instance with ephemeral storage**
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You need a virtual machine hosted on CloudFerro Cloud cloud.
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You can create an instance with ephemeral storage by following this article: [How to create a VM using the OpenStack CLI client on CloudFerro Cloud cloud](../cloud/How-to-create-a-VM-using-the-OpenStack-CLI-client-on-CloudFerro-Cloud-cloud.html.md)
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The actual command used to create an instance from that article was
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```
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openstack server create \
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--image Debian-custom-upload \
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--flavor eo1.small \
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--key-name ssh-key \
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--network cloud_00734_1 \
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--network eodata \
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--security-group default \
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--security-group allow_ping_ssh_icmp_rdp \
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Test-Debian
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```
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In the examples in this article, we are using a default image **Ubuntu 22.04 LTS**.
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With ephemeral storage, only one new instance is created.
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No. 4 **Instance with persistent storage**
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When creating an instance with persistent storage, you just add one new option to the above command; the option is **–boot-from-volume** followed by a
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> * space and the
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> * desired size of the new volume in gigabytes.
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Make sure to enter the amount of storage sufficient for your needs.
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You can also look at storage size available with your chosen virtual machine flavor for guidance (**openstack flavor list** command, column **Disk**)
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For instance, if you want your boot volume to have 16 GB, add the following:
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```
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--boot-from-volume 16
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```
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The complete command would, then, look like this:
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```
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openstack server create \
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--image Debian-custom-upload \
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--flavor eo1.small \
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--key-name ssh-key \
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--network cloud_00734_1 \
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--network eodata_00734_1 \
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--security-group default \
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--security-group allow_ping_ssh_icmp_rdp \
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--boot-from-volume 16 \
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Test-Debian
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```
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In the examples in this article, we are using a default image **Ubuntu 22.04 LTS**.
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With persistent storage, one instance and one volume are created:
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> * a special kind of instance (with no ephemeral storage) and
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> * the volume that is attached to that instance.
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The instance will boot from the volume that was attached during the creation of instance.
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Otherwise, an instance can have two or more volumes attached to it, however, only one will serve as its boot drive.
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No. 5 **How to delete resources**
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If you want to learn how to delete instances, snapshots, volumes and other OpenStack objects, please have a look at the following articles:
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/networking/How-to-correctly-delete-all-the-resources-in-the-project-via-OpenStack-commandline-Clients-on-CloudFerro-Cloud.
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[How to create or delete volume snapshot on CloudFerro Cloud](../datavolume/How-to-create-or-delete-volume-snapshot-on-CloudFerro-Cloud.html.md).
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No. 6 **OpenStack CLI client**
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You need to have OpenStack CLI client installed. One of the following articles should help you: |