Method and system for remote terminal access through application of communication module during boot

1 . A remote access method executed by at least one processor of a computer apparatus, the method comprising:

acquiring a virtual machine image and installing the virtual machine image on a computer apparatus, the virtual machine image including a remote access function to be temporarily executed during booting of a virtual machine, the remote access function including a function for executing a secure shell (SSH) for the virtual machine image;

generating the virtual machine using the virtual machine image, the virtual machine image including a script for the remote access function;

executing the remote access function included in the virtual machine image after the booting of the virtual machine starts;

detecting an error during the booting of the virtual machine;

creating guide information in response to occurrence of the error during the booting of the virtual machine, wherein the guide information includes an access scheme to the remote access function to guide an owner to remotely access the virtual machine and outputting the guide information, and after remotely accessing the virtual machine, enabling the owner to directly verify and handle the error during booting of the virtual machine using the SSH for the virtual machine;

receiving a preset key from the owner of the virtual machine indicating that the error is handled; and

completing booting of the virtual machine, after handling the error, by applying an encryption setting using the preset key.

2 . The remote access method of claim 1 , wherein the remote access function includes a function for accessing a secure shell (SSH) of the virtual machine by applying an access control list (ACL) of an SSH-based public key registration scheme.

3 . The remote access method of claim 2 , wherein the owner is guided through the access scheme to the SSH of the virtual machine.

4 . The remote access method of claim 1 , further comprising: receiving at least one of a preset key and passphrase from the owner of the virtual machine using a key request function of the virtual machine.

5 . The remote access method of claim 1 , further comprising:

requesting a key management service in response to non-occurrence of the error during booting of the virtual machine, wherein the key management service manages a key of the owner of the virtual machine for the key of the owner; and

completing booting of the virtual machine by applying an encryption setting using the key of the owner of the virtual machine provided from the key management service.

6 . The remote access method of claim 5 , wherein the key management service is configured to verify resources of the virtual machine and to provide the key of the owner of the virtual machine.

7 . A non-transitory computer-readable recording medium storing instructions that, when executed by a processor, cause the processor to perform the remote access method of claim 1 .

8 . A computer apparatus comprising:

at least one processor configured to execute computer-readable instructions, wherein the at least one processor is configured to:

acquire a virtual machine image and install the virtual machine image on a computer apparatus, the virtual machine image including a remote access function to be temporarily executed during booting of a virtual machine, the remote access function including a function for executing a secure shell (SSH) for the virtual machine image;

generate the virtual machine using the virtual machine image, the virtual machine image including a script for the remote access function;

execute the remote access function included in the virtual machine image after the booting of the virtual machine starts;

detect an error during the booting of the virtual machine;

create guide information in response to occurrence of the error during the booting of the virtual machine, wherein the guide information includes an access scheme to the remote access function to guide an owner to remotely access the virtual machine and outputting the guide information, and after remotely accessing the virtual machine, enabling the owner to directly verify and handle the error during booting of the virtual machine, using the SSH for the virtual machine;

receive a preset key from the owner of the virtual machine indicating that the error is handled; and

complete booting of the virtual machine, after handling the error, by applying an encryption setting using the preset key.

9 . The computer apparatus of claim 8 , wherein the remote access function includes a function for accessing a secure shell (SSH) of the virtual machine by applying an access control list (ACL) of an SSH-based public key registration scheme.

10 . The computer apparatus of claim 9 , wherein the at least one processor is further configured to guide the owner through the access scheme to the SSH of the virtual machine.

11 . The computer apparatus of claim 8 , wherein the at least one processor is further configured to receive at least one of a preset key and passphrase from the owner of the virtual machine using a key request function of the virtual machine.

12 . The computer apparatus of claim 8 , wherein the at least one processor is further configured to,

request a key from a key management service in response to non-occurrence of the error during booting of the virtual machine, wherein the key management service manages a key of the owner of the virtual machine for the key of the owner, and

complete booting of the virtual machine by applying an encryption setting using the key of the owner of the virtual machine provided from the key management service.