XCP-ng prepare PXE installation

#!/bin/bash
TFTP_SERVER="root@192.168.10.1"
ISO_URL=https://updates.xcp-ng.org/isos/8.1/xcp-ng-8.1.0-prefinal2.iso
# ISO_URL=https://updates.xcp-ng.org/isos/8.0/xcp-ng-8.0.0.iso
ISO_FILE_NAME=$(basename ${ISO_URL})

# get xcp-ng image
[ ! -f ${ISO_FILE_NAME}  ] && wget ${ISO_URL}

# mount
[ ! -d isomount  ] && mkdir isomount
[ ! mountpoint isomount ] && umount isomount
sudo mount -o loop ${ISO_FILE_NAME} isomount

# deploy files to tftp
# tftpboot
# ├── efi
#     └── xenserver
#         ├── bootx64.efi
#         ├── install.img
#         ├── vmlinuz
#         └── xen.gz
if ssh ${TFTP_SERVER} "test -e /tftpboot/xen.gz"; then
    remote_sha25sum=$(ssh ${TFTP_SERVER} sha256sum /tftpboot/xen.gz| cut -d" " -f1)
    local_sha256sum=$(sha256sum isomount/boot/xen.gz| cut -d" " -f1)
    if [ "$remote_sha25sum" != "$local_sha256sum" ]; then
        scp isomount/boot/xen.gz ${TFTP_SERVER}:/tftpboot
    fi
fi

if ssh ${TFTP_SERVER} "test -e /tftpboot/vmlinuz"; then
    remote_sha25sum=$(ssh ${TFTP_SERVER} sha256sum /tftpboot/vmlinuz| cut -d" " -f1)
    local_sha256sum=$(sha256sum isomount/boot/vmlinuz| cut -d" " -f1)
    if [ "$remote_sha25sum" != "$local_sha256sum" ]; then
        scp isomount/boot/vmlinuz ${TFTP_SERVER}:/tftpboot
    fi
fi

if ssh ${TFTP_SERVER} "test -e /tftpboot/install.img"; then
    remote_sha25sum=$(ssh ${TFTP_SERVER} sha256sum /tftpboot/install.img| cut -d" " -f1)
    local_sha256sum=$(sha256sum isomount/install.img| cut -d" " -f1)
    if [ "$remote_sha25sum" != "$local_sha256sum" ]; then
        scp isomount/install.img ${TFTP_SERVER}:/tftpboot
    fi
fi

# prepare bootx64.efi
grub-mkstandalone -d /usr/lib/grub/x86_64-efi/ -O x86_64-efi --fonts=“unicode” -o bootx64.efi boot/grub/grub.cfg

scp bootx64.efi ${TFTP_SERVER}:/tftpboot

# sudo umount isomount
# rm -rf bootx64.efi``