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Instances

In cloud computing, instances refer to virtual machines or containers that run applications or services on cloud infrastructure.

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Written by Djuno Support
Updated over a week ago

Overview

In the context of cloud computing and databases, instances refer to virtual machines or containers that run applications or services on cloud infrastructure. Each instance operates as an independent unit with its own allocated resources, such as CPU, memory, storage, and network capacity. Instances allow users to run applications without managing the underlying physical hardware and can be scaled up or down based on demand. They are commonly used for hosting websites, applications, databases, or performing computational tasks, providing flexibility as users can create, modify, or delete them as needed.

On the Instances page, you can view and manage all your existing instances, along with associated resources like SSH keys, Volumes, and Backups. A dropdown menu offers options for viewing General Information, allowing you to see detailed instance specifications, or to Delete the instance if needed.

Instances

How create instance

In this section you are guided through several steps: allows you to fully customize and manage your instance according to your performance, storage, and location preferences.

  • Select Instance Type: Choose from various instance configurations based on your needs, including options like B3-8, B3-16, B3-32, and more. These instances offer a balance of RAM, CPU (vCores), storage (NVMe or SSD), and network bandwidth, with pricing provided either hourly or monthly, excluding VAT.

  • Choose Location: Select a data center region, such as Beauharnois (BHS5), Frankfurt (DE1), Gravelines (GRA11), London (UK1), or Warsaw (WAW1).

  • Select Image: Choose the operating system for your instance, with options including AlmaLinux, CentOS, Debian, Fedora, and Ubuntu in various versions. You must agree to the supplier's license agreement to use these images.

  • Configure Instance: Set the number of instances (up to your quota), provide an instance name, and optionally add a post-installation script. You can also enable automatic backups for your instance.

  • Select Billing Period: Choose between monthly or hourly billing rates for the instance, and finally, create the instance.

Instance Overview

In the Overview tab, you can access key details about your instance, including its status, region, model, RAM, processor, storage capacity, public bandwidth, pricing information, attached volumes, and the image used for the instance. This overview serves as a comprehensive snapshot of your instance's specifications and current configuration, facilitating effective monitoring and management.

In the Overview, users have the ability to manage volumes associated. Additionally, users can attach volumes to the instance, allowing for increased storage capacity or the use of additional drives, improving the instance's functionality and flexibility.

Instance Actions: you’ll find several actions available for managing your database instance.

  • Rename instance: Change the name of your instance to better reflect its purpose or function.

  • Boot : Start the instance if it is currently powered off.

  • Stop : Power down the instance without deleting it, which saves resources.

  • Reboot in rescue mode : Restart the instance in a special mode that allows for troubleshooting and recovery of the system.

  • Hot reboot (soft) : Reboot the instance without powering it off completely, which minimizes downtime and keeps the system running.

  • Cold reboot (hard) : Completely power off the instance and then restart it, which can be necessary for certain updates or fixes.

  • Reinstall : Reinstall the operating system or software on the instance, which typically resets it to its original state.

  • Exit rescue mode : Exit the rescue mode and return the instance to its normal operational state.

  • Suspend : Temporarily pause the instance, freeing up resources while keeping its state intact.

  • Reactive : Resume a suspended instance and restore it to its operational state.

  • Delete : Permanently remove the instance, including all associated data and configurations.

Networks

In the Network tab, you can find essential networking details related to your instance. This includes the assigned IPv4 address and its corresponding gateway, as well as the IPv6 address and its gateway. Additionally, the tab provides login information, including the SSH command for accessing the instance and the associated SSH key. This section serves as a central hub for managing and reviewing your instance's network configuration and connectivity options.

Images

In the Images tab, you can manage and view the available operating system images for your instance. This section includes an overview of the images and allows you to select and modify the version of the operating system you wish to use. You must accept the supplier's user license agreement. Additionally, there is an option to show unavailable images, providing a comprehensive view of all potential operating system choices for your instance.

Rescale

Instance Backups

In the Backups tab, users are informed that backups are automatic copies of the server's disk. Each server has seven slots for backups, and when all slots are full, the oldest backup will be automatically deleted when a new one is created. It is recommended to power off the server before creating a backup to ensure data consistency on the disks. Enabling backups will incur an additional 20% cost of the server plan per month. The tab also provides options to Run Manual Backups or Enable Automated Backups for the server.

Create manual backups:

In the Manual Backup modal, users are informed that creating a backup will cost €0.01 per month per GB, excluding VAT. During the backup process, the instance will be suspended for a few seconds, and the disk’s read/write performance may be affected until the backup is completed.

Enable Automated backups:

Once the user enables backups, they are informed that backups are now active and will incur a recurring cost of 20% per month based on their current server plan, as outlined in the terms and conditions. Additionally, it is clarified that volumes are not included in these backups, ensuring users understand the scope of what is being backed up.

Once backups are enabled, the option to Disable Automated Backup is displayed, allowing users to turn off automatic backups if needed.

Delete manual backup:

Here users are informed that deleting a backup will result in the permanent loss of all data associated with that backup.

VNC console

The VNC console tab allows you to access the graphical user interface of your virtual machine remotely. Using the VNC (Virtual Network Computing) protocol, you can interact with the desktop environment of your cloud instance as if you were sitting right in front of it. To use the VNC console, you typically need to log in to your instance via SSH first and ensure that a VNC server is running on the machine. The VNC console is especially useful for tasks that require a graphical interface, such as installing software or managing settings that are not easily handled via the command line.

Delete Instance

deleting your instance will stop all current processes associated with that instance and permanently destroy its disk and backups. This action means that any data stored on that instance will be irretrievable once deleted. However, if you have created snapshots of the instance, those snapshots will remain intact and can be used to restore the instance later if necessary.

SSH keys

In the SSH Keys tab, you can manage and create SSH keys for secure instance access, With the option to Create New keys as needed or remove it.

create SSH key:

In the Create SSH Key modal, you can add a new SSH key by providing an SSH key name and the SSH key itself. It is important to note that SSH keys are required for connecting to your service.

Volume

In cloud computing, volumes refer to virtual storage units that can be attached to instances for data storage and management. They provide additional storage capacity beyond what is typically offered by the instance itself. Volumes can be used for various purposes, such as storing application data, backups, or files, and they are often scalable and configurable based on user needs. You can manage your volumes through the Volumes tab.

create volume:

To create a new volume, follow these steps:

  1. Select a Region: Choose from available regions such as Beauharnois, Frankfurt, Gravelines, Roubaix, Strasbourg, London, or Warsaw.

  2. Select Type: Choose the type of volume based on your performance needs:

    • Classic: Offers 250 guaranteed IOPS with a maximum capacity of 4 TB.

    • High-speed-gen2: Provides up to 20,000 IOPS, also with a maximum capacity of 4 TB.

    • High-speed: Offers up to 3,000 IOPS with a maximum capacity of 4 TB.

  3. Volume Capacity: Specify the desired volume capacity. The maximum size depends on your available quota, with a maximum limit of 4,000 GB. You will also see an estimated monthly cost based on your chosen capacity.

  4. Volume Name: Enter a name for your volume to identify it easily.

  5. Validation: Review your selections, including the estimated monthly cost, and then click Create the volume to finalize the process.

This step-by-step process ensures that you can configure your volume according to your storage needs while keeping track of costs and resource availability.

Volume options:

In the Volumes section, each volume comes with a dropdown menu that offers several management options, allowing users to efficiently modify and control their storage resources. These options include editing volume settings, attaching or detaching the volume from instances, and deleting the volume when it is no longer needed. This functionality provides a streamlined way to manage volumes and ensures that users can easily adjust their storage configurations as necessary.

Edit a volume:

Allows you to modify the settings or configuration of the selected volume.

Attach to instance:

Enables you to connect the volume to a specific instance for data access and storage purposes.

Detach from instance:

Disconnects the volume from the currently attached instance, making it available for use with other instances or for other purposes.

Volume Overview

In the Overview tab, you can access essential information about your volume, including its status, region, size, estimated cost, and type. This overview offers a comprehensive snapshot of the volume's attributes, enabling you to monitor its usage and manage associated expenses effectively.

Volume Backups

In the Create Backup modal, you can initiate a backup for your volume to protect against unexpected data loss. The backup will be stored in a different cluster (Object Storage) but within the same location as your volume, ensuring easy access and security.

Create volume backup:

Volume Snapshots

In the Snapshot tab, you can manage and view your existing volume snapshots.

create Volume snapshot:

Delete

In the Delete tab, you can manage the process of removing your volume and associated resources.

Backups

In the Backups tab, you can manage and view your existing backups.

Pricing

to check out flexible pricing see this link

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