Building clusters with UmVirt Linux From Scratch

Configuring Memtest PXE-boot over TFTP

PXE-server configuration

TFTPd-hpa

Enable and start tftpd-hpa service

 systemctl enable tftpd-hpa
 systemctl start tftpd-hpa

Memtest application image

Download memtest.0 file from https://boot.ipxe.org/ and put it in /srv/tftp directory.

TFTP check

Download memtest.0 file from local tftpd server:
```
curl -o memtest.0 tftp://127.0.0.1/memtest.0
```

Kea

open kea-dhcp4.conf.

add "boot-file-name": "memtest.0" on "XClient_iPXE" object:

{
  "name": "XClient_iPXE",
  "test": "substring(option[77].hex,0,4) == 'iPXE'",
  "boot-file-name": "memtest.0"
}

add "next-server": "192.168.180.254" on "subnet4":

"subnet4": [
            {
              "id": 1001,   // Each subnet requires a unique numeric id
              "subnet": "192.168.180.0/24",
              "pools": [ { "pool": "192.168.180.100 - 192.168.180.200" } ],
              "next-server": "192.168.180.254"
]

Restart Kea dhcp4 server
```
systemctl restart kea-dhcp4-server
```

Compute unit test launch

Run compute unit. On PXE boot attempt memtest shold be loaded.