Create hosts with CROC Cloud hostprovider

To create a host, go to the Hosts page and click Create host.

Add a host via ADCM
Add a host via ADCM

In the opened window:

  1. Select the CROC Cloud hostprovider in the Hostprovider field. Notice that hostproviders are displayed with the names that you have assigned to them.

  2. Enter a host name in the Name field.

  3. Click Create.

Describe a new host
Describe a new host
CAUTION
  • When creating hosts for the ADH and ADPS products, you should define an FQDN in the Name field (e.g. test.ru-central1.internal).

  • For the ADS and ADS Control products, FQDNs are required if the ADPS product is used.

  • For the ADQM product, FQDNs are required if Kerberos authentication is used.

  • ADB starting with the 6.23.3.44 version supports both FQDN and short host names. For the previous ADB versions, it is not recommended to use FQDNs (as FQDNs cause errors during the Expand action and a workaround is needed).

  • In other cases, both short host names and FQDNs are allowed in the Name field.

After the host is created, click the host name in the Name column to configure the host.

Switch to configuring a host
Switch to configuring a host

In the opened window, select the Primary configuration tab, fill in parameters listed below, and click Save. Some parameters are available when the Show advanced toggle button is enabled.

Host settings
Host settings
Host configuration parameters
Parameter name Description Default value

Connection address

An IP address of the virtual machine for connecting via SSH

 — 

Secondary NIC IP address

An IP address of the second network interface of the virtual machine

 — 

Port

The SSH port

22

Username

A username that is used for SSH connection

root

Ansible become

Determines whether to grant root rights to this user

true

SSH args

Additional SSH connection parameters

-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null

Additional users groups

All users created on the host Init action will be added to the specified groups when initializing the virtual machine. These groups must exist in the virtual machine image

 — 

Login

The user that is created for a virtual machine

 — 

Public SSH key

A public SSH key

 — 

Cloud-init timeout

Timeout for cloud-init to finish running tasks, in seconds

300

Assign public ip

Set this checkbox checked if you need to use a public IP address

false

Assign secondary NIC

Set this checkbox checked if you need to assign an additional network interface to the virtual machine in the specified subnet

false

Assign internal ip

Specifies an internal IP address assigned to the instance

 — 

ADCM control connection address type

Specifies whether a private or public address ADCM should use to connect to the virtual machine

private

Init script

An initialization script

 — 

Image family

A family of operating systems based on which virtual machines will be created. The newest image from the specified family will be used

CentOS 7.5

Flavor

The virtual machine configuration that determines the characteristics of its resources: the number and type of CPU, the amount of RAM, and other virtual machine parameters

m5.2small

Disk type

A type of disk (volume). The following values are possible:

Standard (HDD)

Disk size

Maximum amount of data that a volume can hold

50

Additional disks (JSON)

Parameters of additional disks in JSON format. For example:

[{ "name": "disk1", "type": "st2", "size": 32 }, { "name": "disk2", "type": "gp2", "size": 32 }]

The volume must be a multiple of 8, not less than 16Gb for st2 and not less than 32Gb for gp2

 — 

Security Group IDs

Sets default Security Group ID value for the created virtual machine. If Security Group IDs in the hostprovider settings and Security Group IDs in the settings specified when creating a virtual machine are set simultaneously, the last one has higher priority

 — 

Labels

Sets default label values for the created virtual machine. If Labels in the hostprovider settings and Labels in the settings specified when creating a virtual machine are set simultaneously, the last one has higher priority

 — 

After you set all required settings, run the host Init action.

Run the Init action
Run the "Init" action

To organize access to a host for the default CROC system user — ec2-user, create a key with the ec2-user name on the Virtual machines → SSH keys page of the CROC console before creating a host. When creating a host, ADCM makes a request to the CROC cloud, and if a key with the ec2-user name exists, it will copy its public part to the virtual machine settings.

The SSH keys page with the ec2-user key in the CROC Cloud console
The "SSH keys" page with the "ec2-user" key in the CROC Cloud console
The SSH keys page with the ec2-user key in the CROC Cloud console
The "SSH keys" page with the "ec2-user" key in the CROC Cloud console
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