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Ubuntu

Overview

Overview

Ubuntu

• NTT Com provides Ubuntu Official Image Template available on Bare Metal Server and Virtual Server.

Server / dedicated hypervisor that can use Ubuntu

• When using Ubuntu with a server / dedicated hypervisor, there are two methods to bring the OS image for customers using an official image template.

• The method for using Ubuntu with each server / dedicated hypervisor is as follows.

OS Use Case	Server/Dedicated Hypervisor
	Baremetal Server	Virtual Server	vSphere ESXi	Hyper-V
Official Image Template	Y	Y	N	N
Private (BYOL) Image Template	Y	Y	Y	Y

Deployment Patterns

• Detailed usage form when using Ubuntu with server / dedicated hypervisor is as follows.

<Deployment Patterns>

Server/Dedicated Hypervisor	Use	Host OS	Guest OS	Official Image Template	BYOL	Deployment Pattern	Availability
Baremetal Server	Host OS	Ubuntu		●			Y
					●		Y
	Guest OS	Optional Hyper Visor	Ubuntu	●			N
					●		Y
Virtual Server	Guest OS	Virtual Server Platform	Ubuntu	●			Y
					●		Y
vSphere ESXi	Guest OS	vSphere ESXi	Ubuntu	●			N
					●		Y
Hyper-V	Guest OS	Windows Server(Hyper-V)	Ubuntu	●			N
					●		Y

Features

• On Demand customers can apply Ubuntu Official Image Template on Bare Metal Server and Virtual Server via Customer Portal or API.

• No Charge is required for Official Image Template

  Regardless of the server the customer uses, both initial and monthly charges are free.

  ※ The server itself (bare metal server, virtual server) to be used will be generated separately.

Available Functions

List of Functions

• Following is the list of Functions offered with Ubuntu Official Image Template:

Function	Details
Initial Username	OS Username is set default of this menu.
Initial Username Password Settings	Initial login password for OS username differs depending upon what Server Customers are utilizing.
Locale Settings	Timezone / Language / Character code / Locale / Keyboard Layout are set default of this menu.
Security Settings	OS security setting (UFW / AppArmor) is set by the prescribed value in this menu.
SSH Settings	Configuration of sshd conf on OS differs for each server/Dedicated Hypervisor.
Other Settings	Customers can set OS initial status, additional package, repository, Ipv6, NTP Server, DNS Server, and default gateway respectively.

OS installation, deletion, rebuild, replication, and such functions will be described in respective Server / Dedicated Hypervisor Service Descriptions. Please refer to them for the details.

*As for the functions offered by Ubuntu itself, please refer to the following website. https://www.ubuntulinux.jp/

Descriptions of Functions

Initial Username Settings

• NTT Com sets the following as initial user name and initial user’s authority.

Item	Server
	Baremetal Server	Virtual Server
Username	ubuntu	ubuntu
Permission	Sudo	Sudo

*When executing with root authority,execute sudo or privilege promotion by su.

Initial User Password Settings

• Customers can set following passwords of Server to be created:

Item	Server
Menu	Baremetal Server	Virtual Server
Details	Customers can set optional values via Customer Portal / API. If there is no entry, random value will be applied.	Initial login password is as follows: ubuntu ubuntu

Locale Settings

• Time zone (UTC), locale, and keyboard layout are set as follows:

Item	Server
	Baremetal Server	Virtual Server
Time Zone Settings	UTC	UTC
Locale Settings	en_US.UTF-8	en_US.UTF-8
Keyboard Layout Settings	English key arrangement (105)	English key arrangement (105)

Security Settings

• UFW and AppArmor settings are as follows:

Item	Server
	Baremetal Server	Virtual Server
UFW	N/A	N/A
AppArmor	Disable	Disable

SSH Settings

• The configuration of sshd conf are set as follows:

Item	Server
	Baremetal Server	Virtual Server
Port	22	22
Protocol	2	2
Password Authentication	Y	N
PubkeyAuthentication	Y	Y
HostbasedAuthentication	N	N

• If a server is created, customers can use the created SSH key pair and the SSH key pair that customer already had. Per 1 tenant there is an upper limit of 120 key pair.

• Following is the methods for create/delete/register key pairs:

Item	Methodology
Create Key Pairs	Customer Portal / API ・Keyname (String) ・SSH public key generated by RSA or DSA.
Delete Key Pairs	Customer Portal / API ・Keyname (String)
Record Key Pairs	Customer Portal /API ・Keyname (String)

Note

If the virtual server is used without changing the initial password, and implemented the SSH connection by the key pair,

After changing the login password, the session will be cut once.

If the SSH connection is implemented again, it will be available. Please be careful.

Other Settings

• Following is the installation status and initial settings of OS:

Category	Item	Server
		Baremetal Server	Virtual Server
Initial Status	Type of Server	Minimal Installation	Minimal Installation
	Additional PKG	Common Open SSH Server(meta group) ・ In the case of Ubuntu 16.04 Cloud-init 0.7.8 ・ In the case of Ubuntu 18.04 chrony Cloud-init 18.2-27 net-tools	Common ・ In the case of Ubuntu 16.04 Open SSH Server(meta group) Cloud-init 0.7.8 ・ In the case of Ubuntu 18.04 Open SSH Server(meta group) acpid Cloud-init 18.2-27 net-tools ntp ・ In the case of Ubuntu 20.04 acpid chrony Cloud-init 20.2-45 net-tools
Initial Setting	Repository	etc/apt/sources.list	etc/apt/sources.list
	IPv6	Enable	Enable
	Default Gateway	Values configured in Logical Network will be set. If left vacant, no value will be set.	Values configured in Logical Network will be set. If left vacant, no value will be set.
	DNS	Values configured in Logical Network will be set. If left vacant, no value will be set.	Values configured in Logical Network will be set. If left vacant, no value will be set.
	NTP	Values configured in Logical Network will be set. If left vacant, 169.254.127.1 will be set. Slew mode is set in chrony.conf.	Values configured in Logical Network will be set. If left vacant, 169.254.127.1 will be set. ・ In the case of Ubuntu 16.04/18.04 In ntpd.conf, the slew mode setting is made. ・ In the case of Ubuntu 20.04 Slew mode is set in chrony.conf.
	Linux EDCA (Error Detection And Correction) driver	After setting up a file in the following directory, it will be set to be unload. etc/modprobe.d/blacklist-edac.conf	ー

Official Image Template

Official Image Template

• Following is the Ubuntu Official Image Template to be provided for Customers:

Official Image Template	OS Version	Language	Server/Dedicated Hypervisor
			Baremetal Server	Virtual Server	vSphere ESXi	Hyper-V
Ubuntu 16.04.1	Ubuntu 16.04.1	EN	Y	Y	N	N
Ubuntu 18.04.1	Ubuntu 18.04.1	EN	Y	Y	N	N
Ubuntu 20.04.1	Ubuntu 20.04.1	EN	N	Y (*)	N	N

*Due to kernel major version of Ubuntu 20.04.1 is updated,vulnerability countermeasures are improved.However,this change cause that some performance may be lower than that of the previous version of OS depending on the use case.

Subscriptions Method

• New Subscriptions

  Please specify following Image at server creation.

Server
Baremetal Server	Virtual Server
Ubuntu-16.04.1_64_baremetal-server_01	Ubuntu-16.04.1_64_virtual-server_02
Ubuntu-18.04.1_64_baremetal-server_01	Ubuntu-18.04.1_64_virtual-server_02
N/A	Ubuntu-20.04.1_64_virtual-server_02

• Termination

  Customers can delete the subscription when they delete Baremetal Server/Virtual Server created with Ubuntu Official Image Template.

Terms and Conditions of Use

Conditions for Usage with Other Services

• Customers are required to request for subscriptions in combination with any of the two: Baremetal Server / Virtual Server.

• In the event that Customers utilize NTP Server that is provided in this service, they will essentially be required to obtain the Common Function Gateway. If Customers would like to request such, they are suggested that they request for subscription.

• In order for Customers to access to set Repository, Customers are required to have a separate contract for Internet Connectivity Menu Services.

Minimum Use Period

• This service does not require Minimum Use Period.

Pricing

Initial Fee

• This menu does not require initial fee.

Monthly Fee

• This menu does not require monthly fee. *However, the Customers’ concurrent Baremetal Server / Virtual Server Subscriptions separately require to be billed.

Quality of Service

Support Coverage

Supported Official Image Templates:

• Support for the Official Image Templates correspond to the following Baremetal Server and / or Virtual Server that is created by Official Image template:

server/
Baremetal Server	Virtual Server
Ubuntu-14.04.1_64_baremetal-server_01	Ubuntu-14.04.1_64_virtual-server_02
Ubuntu-16.04.1_64_baremetal-server_01	Ubuntu-16.04.1_64_virtual-server_02
Ubuntu-18.04.1_64_baremetal-server_01	Ubuntu-18.04.1_64_virtual-server_02
N/A	Ubuntu-20.04.1_64_virtual-server_02

Support Method

• As for the support coverage of Official Image Template concerning free OS including Ubuntu, please refer to OS Service Description.

Operations

Monitoring Coverage

• This menu’s Monitoring Coverage corresponds to SLA regulations based upon the standard Enterprise Cloud 2.0.

SLA

• This menu’s SLA corresponds to SLA regulations based upon the standard Enterprise Cloud 2.0.

Data Center Providing This Menu

• Available data centers are as follows. (As of November 2021)

Region	Server/Dedicated Hypervisor
	Baremetal Server	Virtual Server
JP1	Y	Y
JP2	Y	Y
JP4	Y	Y
JP5	Y	Y
JP6	Y	Y
US1	Y	Y
UK1	Y	Y
DE1	Y	Y
SG1	Y	Y
HK1	Y	Y

Restrictions

All

• There is no particular restriction for this menu.

• Please refer to following Service Description Document if Customers would like to see the restrictions of overall OS menus.

Backup

• File backup / file restoration provided in this backup menu,

  For the OS to be backed up / restored by the system, please refer to the backup service manual.

  https://ecl.ntt.com/documents/service-descriptions/backup/backup.html

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