2.4.3. Core OS¶
2.4.3.1. About This Menu¶
Overview¶
This menu provides the Official Image Template of Core OS, which is compliant with Baremetal Server and Dedicated Hypervisor.
Core OS-Compliant Server / Dedicated Hypervisor¶
When Customers utilize Core OS with Server / Dedicated Hypervisor, following two ways are available: 1. To utilize Official Image Template; 2. To bring their own OS image
Following is how Customers utilize Core OS with Server / Dedicated Hypervisor respectively.
OS Use Case |
Server/Dedicated Hypervisor |
|||
---|---|---|---|---|
Baremetal Server |
Virtual Server |
vSphere ESXi | Hyper-V | |
Official Image Template |
Y | N | N | N |
Private (BYOL) Image Template |
Y | Y | Y | Y |
Deployment Patterns¶
The deployment patterns of Ubutu for each Server / Dedicated Hypervisor are as follows,
<Deployment Patterns>
Server/Solution Package |
Use |
Host OS |
Guest OS |
Official Image Template |
BYOL |
Deployment Pattern |
Availability |
---|---|---|---|---|---|---|---|
Baremetal Server |
Host OS |
Core OS |
ー | ● | Y | ||
● | Y | ||||||
Guest OS |
Optional Hyper Visor |
Core OS |
● | N | |||
● | Y | ||||||
Virtual Server |
Guest OS |
Virtual Server Platform |
Core OS |
● | N | ||
● | Y | ||||||
vSphere ESXi | Guest OS |
vSphere ESXi | Core OS |
● | N | ||
● | Y | ||||||
Hyper-V | Guest OS |
Windows Server(Hyper-V) | Core OS |
● | N | ||
● | Y |
Features¶
On-Demand Customers can request for Core OS Template with their subscriptions of Baremetal Server or Virtual Server via Customer Portal / API.
- Free of Charge for Official Image TemplateRegardless of the server the customer uses, both initial and monthly charges are free.*However, Servers (Baremetal Server, Virtual Server etc.) are charged separately.
2.4.3.2. Available Functions¶
Official Image Template¶
Following is the Core OS 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 | |||
CoreOS-835.9.0 |
CoreOS-835.9.0 |
EN | Y | N | N | N |
List of Functions¶
Following is the list of functions offered with Core OS Official Image Template:
Function |
Overview |
Initial Username |
OS Username is set default of this menu. |
Initial Username and Password Settings |
Initial login password for the OS username differs depending on the servers. |
Locale Settings |
Timezone / Language / Character code / Locale / Keyboard sequence are set default. |
Security Settings |
Security settings of OS (iptables/SELinux) are set default. |
SSH Settings |
The sshd.conf settings of OS differ depending on the servers or solution packeage. |
Other Settings |
Customers can set OS initial status, additional package, repository, Ipv6, NTP, DNS, and default gateway respectively. |
Descriptions of Functions¶
Initial Account Settings¶
Initial username and initial user permission are set as follows:
Items |
Server |
---|---|
Baremetal Server |
|
Username |
core |
Permission |
Sudo |
Note
If Customers would like to operate with root permission, please use sudo or get permission with su command.
Initial User Password Settings¶
Customers can set following passwords of Server to be created:
Items |
Server |
---|---|
Menu |
Baremetal Server |
Details |
Customers can set optional values via Customer Portal / API.
If there is no entry, random value will be applied.
|
Locale Settings¶
Time zone (UTC), locale, and keyboard layout are set as follows:
Items |
Server |
---|---|
Baremetal Server |
|
Time Zone Settings |
UTC |
Locale Settings |
en_US.UTF-8 |
Keyboard Layout Settings |
English Key Layout (101/104) |
SSH Settings¶
The configuration of sshd conf are set as follows:
Items |
Server |
---|---|
Baremetal Server |
|
Port | 22 |
Protocol | 2 |
Password Authentication | Y |
Public keyAuthentication | Y |
HostbasedAuthentication | N |
When Customers create Baremetal Server, they can create SSH key pairs, as well as they can utilize their existing ones. Maximum number of key pair per Tenent is 120.
Following is the methods for create/delete/register key pairs:
Items |
Methodology |
Create Key Pairs |
Customer Portal / API
|
Delete Key Pairs |
Customer Portal / API
|
Record Key Pairs |
Customer Portal / API
|
Other Settings¶
Following is the installation status and initial settings of OS:
Category |
Item |
Server |
---|---|---|
Baremetal Server |
||
Initial Status |
Type of Server |
Minimal Installation |
Initial Setting |
Repository |
etc/apt/sources.list |
IPv6 | Enable | |
Default Gateway |
Values configured in Logical Network will be set. If left vacant, no value 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.
If left vacant, no value will be set.
|
|
NTP | Values configured in Logical Network will be set. If left vacant, no value will be set.
If left vacant, 169.254.127.1 will be set.
|
2.4.3.3. Menu¶
Official Image Template (Reprise)¶
Following is the Core OS 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 | |||
CoreOS-835.9.0 |
CoreOS-835.9.0 |
EN | Y | N | N | N |
Subscriptions Method¶
- New SubscriptionCustomer needs to designate following image template when they create servers.
Server |
---|
Baremetal Server |
CoreOS-835.9.0_64_baremetal-server_01 |
- TerminationCustomers can delete the subscription when they delete Baremetal Server created with Core OS official image template.
2.4.3.4. Terms and Conditions¶
Conditions for Usage with Other Services¶
Customers are required to subscribe Baremetal Server in combination with this menu.
- In the event that Customers utilize NTP Server that is provided in this menu, they will essentially be required to obtain the Common Functions Gateways.If Customers would like to request such, they are suggested that they request for subscription.
Minimum Use Period¶
This service does not require Minimum Use Period.
2.4.3.5. Pricing¶
2.4.3.6. Quality of Service¶
Support Coverage¶
Supported Official Image Templates:¶
Support for this menu corresponds to the following Baremetal Server that is created by following official image template:
Server |
---|
Baremetal Server |
CoreOS-835.9.0_64_baremetal-server_01 |
Support Method¶
Please refer to OS Service Description as for the support coverage of Official Image Template including free OS such as Core OS.
Operations¶
Monitoring Coverage¶
The SLA of this menu is based on the standardized SLA for Enterprise Cloud 2.0
SLA¶
The SLA of this menu is based on the standardized SLA for Enterprise Cloud 2.0
2.4.3.7. Restrictions¶
There is no OS-specific restrictions Core OS requires Customers especially with this menu.
Please refer to following Service Description Document if Customers would like to see the restrictions of overall OS menus.