Instances

Instances


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What is an IDrive Compute instance?

Instances are virtual machines (VMs) hosted on hardware resources that are managed by IDrive Compute. You can create and customize multiple instances configured with an OS of your choice in a few clicks.

How do I create a virtual instance with IDrive Compute?

To create a new instance,

  1. Sign in to your IDrive Compute account.
  2. Click Create Instance > Virtual Server on the web console.
  3. Select a Region from the drop-down list.
  4. Choose a standard distribution, or select a custom image or application stack image which you want to use for creating an instance.
  5. Choose a plan. You can select shared or dedicated CPU and choose yearly or monthly billing.
  6. Select an authentication method for the instance. You can either set an SSH key or a root password for authentication.
    • SSH-Keys - Select SSH Keys from the list of pre-added keys. To add a new key, click Add an SSH Key. Enter the key name and your existing SSH Public Key details, click Add Key.
    • Password - A root password will be suggested by default. You may use the same password or create a new password.
  7. Enter User Data in cloud-config format. This is optional.
  8. Add the required number of instances and instance names under Finalize and Create.
  9. Activate the following add-ons as required by clicking the corresponding checkbox:
    • Enable Backup - Select this option to enable daily cloud-based image backup for the instance.
    • Private IP - Select this option to get a private IP address for your instance.
  10. Click Create.

On successful creation of a new instance, a message will be displayed and the new instance will be listed in the Instances page. You can now access, use, and manage it.

Note: A temporary authorization on the total monthly base rate of the instances being created will be placed to ensure there are sufficient funds. The actual charges may vary based on usage.

How does a Dedicated CPU Instance differ from a Shared CPU Instance?

In a Dedicated CPU Instance the allotted physical CPU cores are exclusively only for use of that instance unlike a Shared CPU Instance, where you share the virtual CPU cores with other instances.

Other instances cannot schedule processes on the dedicated CPU cores, so there is no waiting time for your instance, making it an ideal choice for CPU-intensive jobs requiring high processing power jobs like:

  • Big data analysis
  • Machine learning
  • Video streaming services
  • Gaming servers
  • Scientific computing

What does the following status for a region mean?

  • Under Maintenance: The region is currently under maintenance and its resources are not available.
  • Upcoming: The region is not currently available. It will be provisioned soon.

Can I preview the specifications of an instance before creation?

Yes, you can review your selections and make modifications before creating an instance under the Instance Summary section. This section displays all the configurations selected by you for the instance.

IPv6 is not configured for my instance. How do I set it?

By default all compute instances will have IPv6 enabled. However, in some of the cases for instances running on Fedora 30, Fedora 31, and Debian 9 distributions, it may not get enabled automatically during their creation.

For such an instance you will have to configure IPv6 manually.

To configure IPv6 manually,

  1. Login to the instance.
  2. Copy the IPv6 address from the console.
  3. Copy the default gateway address from the console.
  4. Execute the following commands depending on the Linux distribution the instance is running on:
For Fedora 30 and Fedora 31
$ sudo  sh -c 'cat << EOF >> /etc/sysconfig/network-scripts/ifcfg-eth0
IPV6ADDR = IP_ADDRESS_FROM_THE_CONSOLE
IPV6INIT = yes
IPV6_DEFAULTGW = GATEWAY_ADDRESS_FROM_THE_CONSOLE
EOF
'

E.g. If we assume that the IP address for your instance as per the selected region is 2600:3004:1200:1100::a1/64 and the default gateway address is 2600:3004:1200:1100::1, the file will look like this:

$ sudo  sh -c 'cat << EOF >> /etc/sysconfig/network-scripts/ifcfg-eth0
IPV6ADDR = 2600:3004:1200:1100::a1/64
IPV6INIT = yes
IPV6_DEFAULTGW = 2600:3004:1200:1100::1
EOF
'

After adding the above-mentioned information to the network configuration file of the instance, run 'ifup eth0'. This will assign an IPv6 address to the instance.

Check 'ip address' to confirm if IPv6 has been assigned to eth0. If it has not been assigned, reboot the instance to apply the changes.

For Debian 9

$ sudo  sh -c 'cat << EOF >>  /etc/network/interfaces.d/50-cloud-init.cfg
iface eth0 inet6 static
address IP_ADDRESS_FROM_THE_CONSOLE
post-up route add -A inet6 default gw GATEWAY_ADDRESS_FROM_THE_CONSOLE || true
pre-down route del -A inet6 default gw GATEWAY_ADDRESS_FROM_THE_CONSOLE || true
EOF
'

E.g. If we assume that the IP address for your instance as per the selected region is 2600:3004:1200:1100::a1/64 and the default gateway address is 2600:3004:1200:1100::1, the file will look like this:

							$ sudo  sh -c 'cat << EOF >> /etc/network/interfaces.d/50-cloud-init.cfg
iface eth0 inet6 static
address 2600:3004:1200:1100::1e4/64
post-up route add -A inet6 default gw 2600:3004:1200:1100::1 || true
pre-down route del -A inet6 default gw 2600:3004:1200:1100::1 || true
EOF
'

After adding the above-mentioned information to the network configuration file of the instance, run sudo systemctl restart networking'. This will assign an IPv6 address to the instance.

Check the 'ip address' to confirm if IPv6 has been assigned to ens3. If it has not been assigned, reboot the instance to apply the changes.

To test the IPv6 configuration, try pinging ping6 google.com from the instance.

If IPv6 is properly configured, you will receive an output similar to this:

This means the instance can now communicate with other sites and servers that have IPv6 enabled.

If you still cannot connect to the instance, check the changes made to the configuration file for errors, then reboot and test again. Raise a support ticket in case of any further issue.

How do I determine the best location to host an Instance?

A region that is closest to you and the end users ensures rapid connectivity and low latency for your instance. You can perform a speed test for the various regions and determine the best location to host an instance.

Can I backup an instance created with my IDrive Compute account?

Yes, you can enable backup for your compute instances to maintain an offsite repository and for new instance creation. Enabling backup will schedule an automatic rotation as per the selected option. It is strongly recommended that you enable backup for your compute instances to recover from any failure.

Note: The compute instance may go into a paused state for a short period of time during the backup operation and will resume automatically. This is to ensure the data integrity of the instance.

How do I enable/schedule backup of an instance?

You can enable backup for an instance either during its creation or choose to enable it anytime later.

To enable backup while creating a new instance, select Enable Backup under Optional Add-ons.

To enable backup for an instance later,

  1. Sign in to your IDrive Compute account.
  2. Click Actions against the instance which you want to backup, select Configure Backup.
  3. Click Enable Daily Backup in the Backups tab to backup the instance on a daily basis. To perform automated backup on a weekly basis, click Enable Weekly Backup.

Note: Backups will be charged additionally at $0.05/GB/month.

How do I disable a scheduled backup?

To disable a scheduled backup,

  1. Sign in to your IDrive Compute account.
  2. Click Actions against the instance for which you want to disable the schedule, select Configure Backup.
  3. Click Disable Daily Backup if you have a daily backup schedule enabled. To disable a weekly backup schedule, click Disable Weekly Backup.

Alternatively, you can click the instance, go to the Backups tab, and disable the backup schedule.

Note: Disabling backup will not delete backups that have already been taken and you can access them from the Backups tab.

Where can I view my instances?

IDrive Compute offers an easy-to-use centralized web console from where you can view, access, and manage all compute instances.

All the instances created with your account can be viewed from the Instances tab. Here you can see the list of all instances, along with their IP address, region, current status, and date of creation.

You can also search for a particular instance and filter the list based on the status type.

What actions can I perform on my instances?

You can perform reboot/restart or turn off the instances, configure backup, configure settings, launch console, resize and delete an instance.

Click Actions and perform the following operations for an instance:

  • Reboot - Reboot/restart the instance to up its performance and keep it running.
  • Power Off - Shutdown the instance forcefully. This operation is similar to powering off a physical machine.
  • Launch Console - Open a virtual console right from your dashboard to access and manage the instance.
  • Resize - Customize the memory, CPU sharing mode (shared CPU/dedicated CPU), and storage configurations of the instance.
  • Clone - Create an exact copy of an existing instance with its entire pre-configured environment and data.
  • Configure Backup - Activate a weekly and daily backup schedule for the instance.
  • Settings - Update the default settings for the instance. From here you can set a new label, create a new root password, or delete the instance.
  • Delete - Permanently delete the instance from your account with all its data.

How do I manage the instances in my account from the web console?

To view the details of a particular instance and perform various operations related to it click the instance. A menu will appear on the screen from where you can do the following:

  • Overview - View bandwidth usage, CPU usage, disk input/output operations, and IP addresses for the instance.
  • Networking - View the SSH access info, IP addresses, and firewall rules for the instance.
  • Backups - Schedule an automated daily or weekly disk image backup for the instance.
  • Snapshots - Capture a real-time image of the instance with all its contents and save it as a snapshot to restore the instance to a specific point in time or create a new instance in future. This section also displays all the snapshots created for the instance.
  • Volumes - Create and attach block storage volumes to the instance to expand its storage capacity.
  • Resize - Customize the memory, CPU sharing mode (shared CPU/dedicated CPU), and storage configurations of the instance.
  • Clone - Create an exact copy of an existing instance with its entire pre-configured environment and data.
  • Rescue - Boot the instance in rescue mode when it is unable to boot in the normal mode because of some technical issue.
  • Rebuild - Recreate the instance with the same or a new image without changing the existing IP address.
  • Activity - View a list of all the recent web-based activities performed for the instance.
  • Settings - Modify the instance settings. You can rename an instance, reset the root password, or permanently delete the instance from your account.

How do I upload a custom image?

You can upload custom images to your account for creating instances.

To upload an image from hard disk,

  1. Sign in to your IDrive Compute account.
  2. Go to the Images tab and click Custom Images.
  3. Click Upload Image. The option to upload an image from the hard disk is selected by default.
  4. Enter the image name.
  5. Click Choose File to browse and select the image.
  6. Select a Region.
  7. Click Upload Image.

To import a custom image via URL,

  1. Sign in to your IDrive Compute account.
  2. Go to the Images tab and click Custom Images.
  3. Click Upload Image.
  4. Select Import via URL.
  5. Enter the URL.
  6. Enter the image name.
  7. Select a Region.
  8. Click Upload Image.

Note:

  • Custom images are billed per month at $0.05/GB.
  • The custom image size cannot be more than 2 TB.

How do I create an instance using a custom image?

You can create an instance using an active custom image. To upload a custom image see here.

To create an instance,

  1. Sign in to your IDrive Compute account.
  2. Go to the Images tab and click Custom Images.
  3. Click Actions against the image which you want to use for creating an instance.
  4. Select Create an instance.
  5. Select a Region from the drop-down list.
  6. The custom image that you are using to create the instance will be selected by default.
  7. Choose a plan. You can select shared or dedicated CPU and choose yearly or monthly billing.
  8. Select an authentication method for the instance. You can either set an SSH key or a root password for authentication.
    • SSH-Keys - Select SSH Keys from the list of pre-added keys. To add a new key, click Add an SSH Key. Enter the key name and your existing SSH Public Key details, click Add Key.
    • Password - A root password will be suggested by default. You may use the same password or create a new password.
  9. Enter User Data in cloud-config format.
  10. Add the required number of instances and instance names under Finalize and Create.
  11. Activate the following add-ons as required by click the corresponding checkbox:
    • Enable Backup - Select this option to enable a cloud-based image backup for the instance.
    • Private IP - Select this option to get a private IP address for your instance.
  12. Click Create.

Note:

  • Custom Image must have sshd installed and configured to run on boot. If sshd is not set up, you will not have SSH access to the instance
  • Cloud-init 0.7.7 or higher should be installed and configured properly on the custom image for ssh keys, root password and user-data injection during creation of an instance.

Can I clone an instance?

Yes, you can clone a compute instance created in a particular region to a different region.

Cloning will create an identical replica of your existing virtual instance with its entire pre-configured environment and data.

To clone an instance,

  1. Sign in to your IDrive Compute account.
  2. Click Actions against the instance which you want to clone, select Clone.
  3. Select a Region from the drop-down list.
  4. Choose a plan. You can select shared or dedicated CPU and choose yearly or monthly billing.
  5. Add the required number of instances and instance names under Finalize and Create.
  6. Click Create. The progress of the cloning operation will be displayed on the screen.

On successful creation of the clone, a message will be displayed and the cloned instance will be listed in the Instances page.

Note: The cloned instance will be created with the same password and SSH Keys (if any) as the original instance.

How do I resize an instance?

To resize an instance,

  1. Sign in to your IDrive Compute account.
  2. Click Actions against the instance you want to resize, select Resize.
  3. Choose a suitable plan.
  4. Click Resize.

Alternatively, you can click on the instance and select Resize from the LHS menu to perform this operation.

Important Points to Note

  • Resizing an instance is an irreversible operation. The disk size of an instance cannot be decreased.
  • It is recommended to take a snapshot of an instance before resizing it.
  • The instance will be shut down during the resize operation.

How do I rescue and unrescue an instance?

To rescue an instance,

  1. Sign in to your IDrive Compute account.
  2. Click the instance you want to rescue.
  3. Select Rescue from the LHS menu.
  4. Choose a standard distribution or select a custom image or application stack image from the Images tab.
  5. Click Rescue.
  6. Click Rescue in the popup.
  7. Login to the rescuing OS and rescued instance disk should be available as an attachment, which can be mounted to perform the rescue operation.

To unrescue an Instance,

  1. Sign in to your IDrive Compute account.
  2. Click Actions against the instance, select Unrescue.
  3. Click Unrescue in the popup.

I am not able to login with the root password after rescuing my instance. Why?

During a rescue operation, the rescuing OS gets the settings of the rescued instance which were configured at the time of instance creation. Therefore, you will have to use the root password of the rescued instance set during its creation to login.

However, the root password can be changed by accessing the instance via SSH Key.

How do I rebuild an instance?

To rebuild an Instance,

  1. Sign in to your IDrive Compute account
  2. Click the instance you want to rebuild.
  3. Select Rebuild from the LHS menu.
  4. Choose a standard distribution or select a custom image or application stack image from the Images tab in the Rebuild page.
  5. Enter a Root Password.
  6. Select SSH Keys from the list of pre-added keys. To add a new key, click Add SSH Key. Enter the key name and your existing SSH Public Key details, click Add Key.
  7. Click Rebuild.

How do I provide user data to an instance?

User data is arbitrary data that you may provide at the time of creating an instance. The user data will be consumed via Cloud-Init during the first boot of the instance for its configuration. All the Linux distributions supported by IDrive Compute have Cloud-Init service enabled. However, at present only Cloud-config format is supported.

What is a virtual console and how can it be used?

A virtual console is a user interface that provides VNC support through a web browser. It is used to view the console output of an instance. This allows relaying keyboard and mouse activities to and from an instance.

To use a console,

  1. Sign in to your IDrive Compute account.
  2. Click Actions against the instance for which you want to launch the console.
  3. Select Launch Console.
    This opens a virtual console in a new browser tab.
Now you can use it to access and manage the instance.

Can I assign a private IP for my instances?

Yes, you can assign a private IP for your instance during instance creation or choose to assign it anytime later.

To assign a private IPv4 while creating a new instance, select Private IP under Optional Add-ons.

By assigning a private IPv4 address to the instances allows you to enable private communication with other instances (that have private IP) within your account.

Note:
  • If you assign a private IPv4 address to an instance after creation, the instance will be rebooted to complete the operation.
  • In the case of openSUSE instances where a private IPv4 address is assigned after instance creation, users must configure the private network manually.

How do I configure a private IPv4 network for openSUSE instances?

In the case of openSUSE instances where a private IPv4 address is assigned after instance creation, the private network must be configured manually.

Once a private ipv4 address is added, the private network device is eth1 and the public network device is eth0.

To configure a private network on openSUSE instances,

  1. Find the MAC address of the eth1 adapter.
    # ip addr show eth1
  2. Look for the link/ether value of adapter eth1 , as in the example below
    3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff

    The MAC address of eth1 adapter is 00:00:00:00:00:00

  3. Populate /etc/sysconfig/network/ifcfg-eth1 with the following text. Replace <MAC_ADDRESS> with your actual mac address of eth1 adapter.
    		BOOTPROTO=dhcp
    DHCLIENT6_MODE=info
    LLADDR=<MAC_ADDRESS>
    MTU=1450
    STARTMODE=auto
  4. Bring the network interface up
    # ifup eth1

How do I add an SSH Key to my IDrive Compute account?

To add an SSH key,

  1. Sign in to your IDrive Compute account.
  2. Click the SSH Keys tab.
  3. Click Add SSH Key. A slider window will open.
  4. Enter the Key Name.
  5. Enter your existing SSH Public Key details.
  6. Click Add Key.

The added SSH key will be displayed in the SSH Keys tab.

How do I generate a new SSH Key?

To generate a new SSH Key on Linux, MacOS, and Windows, follow these instructions:

Note:

  • You can create a new key pair, if required.
  • Windows users who do not have OpenSSH installed on their computer can install and use PuTTY.
  1. Open a terminal and run the following commands:
    ssh-keygen
  2. You will be prompted to save and name the key.
    a. Generating a public/private rsa key pair

    Enter the file name in which you want to save the key:
    (/Users/USER/.ssh/id_rsa)

    b. Next, you will be asked to create and confirm a passphrase for the key. This step is highly recommended.

    Enter passphrase (Keep it empty if you do not want to enter a passphrase):

    Enter same passphrase again:

    By default two files will be generated, id_rsa and id_rsa.pub.

  3. Copy and paste the contents of the .pub file, typically id_rsa.pub, into the SSH Key content field.
    cat ~ /.ssh/id_rsa.pub

    A new SSH Key will be generated. You can add the key to your IDrive Compute account and use it during new instance creation to log in to the instance securely without requiring a password.

How do I view the details of an SSH Key?

To view the details of an SSH key,

  1. Sign in to your IDrive Compute account.
  2. Go to the SSH Key tab, select the SSH Key whose details you want to see.
  3. Click Actions and select View Details.

How do I delete an SSH Key?

To delete an SSH Key,

  1. Sign in to your IDrive Compute account.
  2. Go to the SSH Keys tab, select the SSH Key you want to delete.
  3. Click Actions and select Delete.
  4. Click Delete in the popup.

What is an IDrive Compute snapshot?

With IDrive Compute’s snapshot feature, you can capture a real-time image of an instance with all its contents, save it, and use it to restore the instance to a specific point in time and create a new instance.

You can take a live snapshot of a running instance. When you take a snapshot of a running instance, you can continue working on it while your snapshot is being taken in the background. A snapshot can also be captured when the instance is offline.

How do I create a snapshot of an instance?

To take a snapshot of an instance,

  1. Sign in to your IDrive Compute account.
  2. Click the instance whose snapshot you want to take.
  3. Click Snapshot from the LHS menu.
  4. Enter a name for the snapshot.
  5. Click Take a live snapshot.

The snapshot will be saved and displayed in the Snapshots page under Images. You can use the snapshot to create an instance. It can also be downloaded on your local computer for future use.

Note: Snapshots will be charged additionally at $0.05/GB/month.

How do I create an instance using a snapshot?

To create an instance using a snapshot,

  1. Sign in to your IDrive Compute account.
  2. Go to the Images tab and click Snapshot.
  3. Click Actions against the snapshot which you want to use for creating an instance.
  4. Select Create an instance.
  5. Select a Region from the drop-down list.
  6. The snapshot that you are using to create the instance will be selected by default.
  7. Choose a plan. You can select shared or dedicated CPU and choose yearly or monthly billing.
  8. Select an authentication method for the instance. You can either set an SSH key or a root password for authentication.
    • SSH-Keys - Select SSH Keys from the list of pre-added keys. To add a new key, click Add an SSH Key. Enter the key name and your existing SSH Public Key details, click Add Key.
    • Password - A root password will be suggested by default. You may use the same password or create a new password.
  9. Enter User Data in cloud-config format.
  10. Add the required number of servers and server name under Finalize and Create.
  11. Activate the following add-ons as required by clicking the corresponding checkbox:
    • Enable Backup - Select this option to enable a cloud-based image backup for the instance.
    • Private IP - Select this option to get a private IP address for your instance.
  12. Click Create.

On successful creation of a new instance, a message will be displayed and the instance will be listed in the Instances page.

What is a firewall?

A firewall is a network-based security that helps to manage and define network access to your instances. IDrive Compute firewalls block unpermitted traffic to your compute instance based on the defined inbound and outbound rules.

While the outbound rules limit egress traffic to the compute instances, the inbound rules filter the ingress traffic at the network level before it reaches your instances.

How do I create a new firewall in my IDrive Compute account?

To create a new firewall,

  1. Sign in to your IDrive Compute account.
  2. Click the Firewalls tab.
  3. Click Create Firewall. A slider window will open.
  4. Select a region from the drop-down menu.
  5. Enter the Firewall Name.
  6. Click Create.

After successful creation of the firewall you can define the required inbound and outbound rules for it.

What types of firewall rules can I configure in my account?

You can configure inbound and outbound firewall rules in IDrive Compute. Inbound firewall rules define the traffic flowing inward from the intended ports and servers to your computer. Outbound firewall rules define the traffic flowing outward from your computer to the ports and servers you intend.

To configure inbound rules for a firewall,

  1. Go to the Firewalls tab.
  2. Click the required firewall.
  3. Click New Rule.
  4. Select a network protocol from the drop-down list.
  5. Click Save.

To configure outbound rules for a firewall,

  1. Click the required firewall from the Firewalls tab.
  2. Click New Rule.
  3. Select a network protocol from the drop-down list.
  4. Click Save.

Once done, apply the configured firewall rules to the required instances. Enter one or multiple instances in the box as required and click Apply to push the rules to them.

How do I attach a firewall to an instance?

To attach a firewall to an instance,

  1. Sign in to your IDrive Compute account.
  2. Go to the Instances tab.
  3. Click the instance to which you want to apply a firewall.

    Note: Multiple firewalls can be attached to an instance.

  4. Click Networking from the LHS menu.
  5. Select the firewalls you want to attach to the instance in the Firewall section.

To attach a firewall to multiple instances,

  1. Sign in to your IDrive Compute account.
  2. Go to the Firewalls tab.
  3. Click Actions against the firewall that you want to attach to an instance and select Edit.
  4. Select the instance to which you want to attach the firewall in the Apply to instances section.

    Note: Multiple instances can be attached to a firewall.

  5. Click Apply.

Can I edit the rules configured for a firewall?

Yes, you can modify the configured inbound and outbound firewall rules.

To edit the rules for a firewall,

  1. Sign in to your IDrive Compute account.
  2. Click the Firewalls tab.
  3. Click Actions against the firewall that you want to attach to an instance and select Edit.
  4. Edit the type, port range, and sources for your configured inbound and outbound firewall rules as per your preference and click Save.
  5. Attach or detach the firewall from an instance by entering or removing the instance under the Apply to instances section and click Apply.

    Note: Multiple instances can be attached to a firewall.

How do I delete a firewall rule?

To delete an inbound or outbound firewall rule,

  1. Sign in to your IDrive Compute account.
  2. Go to the Firewalls tab.
  3. Click the firewall for which you want to delete a rule.
  4. Click the against the firewall rule that you want to delete.
  5. Click Delete in the popup.

How do I edit a firewall name?

To edit a firewall name,

  1. Sign in to your IDrive Compute account.
  2. Click the Firewalls tab.
  3. Click Actions against the firewall that you want to attach to an instance and select Edit.
  4. Click the Edit icon on the top right corner. A slider window will appear.
  5. Enter a new name for the firewall.
  6. Click Save.

What sources can I add in my firewall rule?

When a firewall rule is created, by default ALL IPv4 and ALL IPv6 are added in the source to allow everyone to connect to the instance via the protocol mentioned in the rule. However, you can restrict your rule to allow only certain IP ranges by adding a Classless Inter-Domain Routing (CIDR) in the sources.



Why are the outgoing TCP ports blocked? Is it possible to unblock the ports?

Email abuse has evolved as a significant threat in recent times. Spammers are adopting new methods to leverage vulnerabilities and it is becoming increasingly difficult to stop or block email abuse. We are taking all necessary precautions and as an attempt to reduce email abuse from the IDrive Compute platform, the outgoing TCP ports 25, 465, and 587 are blocked.

The SMTP ports can be opened on-request. Submit a request to our support team stating the reason for opening the port. Our team will verify your request and if they find the reason to be valid, the port will be opened.

How do I delete a firewall from my account?

To delete a firewall,

  1. Sign in to your IDrive Compute account.
  2. Click the Firewalls tab.
  3. Click Actions against the firewall that you want to delete from your account and select Delete.
  4. Click Delete in the popup.

Note: The firewall will be permanently removed from your account.

What is a default firewall and why is it created?

The firewall named 'default_firewall' is a system generated firewall, which gets attached to an instance during its creation. This firewall allows all ingress and egress traffic by default. All operations are allowed on this firewall like any other firewall such as adding and editing rules. However, this firewall cannot be renamed.

If a user deletes this firewall, the system will recreate this firewall whenever a new instance is created in that particular region; otherwise, it gets created during the first instance creation in any particular region.