Validate hostname when creating a host

[dann1]

Description
It is possible to create a host whose hostname contains whitespaces at the beginning.

root@PC04:~# onehost create ' localhost' -i kvm -v kvm
ID: 2
root@PC04:~# onehost list
  ID NAME                                                                                                                CLUSTER    TVM      ALLOCATED_CPU      ALLOCATED_MEM STAT
   2  localhost                                                                                                          default      0                  -                  - err
   0 localhost                                                                                                           default      6  2150 / 9600 (22%) 28.3G / 128G (22%) on

The call succeeds, however it will lead to errors. The whitespace being next to a regular whitespace makes the error not so obvious.

root@PC04:~# onehost show 2
HOST 2 INFORMATION
ID                    : 2
NAME                  :  localhost
CLUSTER               : default
STATE                 : ERROR
IM_MAD                : kvm
VM_MAD                : kvm
LAST MONITORING TIME  : -

HOST SHARES
RUNNING VMS           : 0
MEMORY
  TOTAL               : 0K
  TOTAL +/- RESERVED  : 0K
  USED (REAL)         : 0K
  USED (ALLOCATED)    : 0K
CPU
  TOTAL               : 0
  TOTAL +/- RESERVED  : 0
  USED (REAL)         :
  USED (ALLOCATED)    : 0

MONITORING INFORMATION
ERROR="Thu Sep  5 03:27:36 2024 : Error monitoring Host  localhost (2): "
IM_MAD="kvm"
RESERVED_CPU=""
RESERVED_MEM=""
VM_MAD="kvm"

WILD VIRTUAL MACHINES

NAME                                                      IMPORT_ID  CPU     MEMORY

VIRTUAL MACHINES

Column 'HOST' not found

The idea is to improve the already existing validation on the API Call.

root@PC04:~# onehost create '' -i kvm -v kvm
[one.host.allocate] Invalid NAME, it cannot be empty

Use case
Prevent errors after a seemingly successful host creation.

Progress Status

• Code committed
• Testing - QA
• Documentation (Release notes - resolved issues, compatibility, known issues)

[aioue]

Creation also accepts underscore which isn't a valid hostname character.