Citrix Xen Server/ Install Xen Server Tools

XenCenter

First, mount the tools storage in XenCenter on the VM.
Enter the following commands.

CentOS7 console example:

[root@xenserver]# cd /mnt
[root@xenserver]# ls
[root@xenserver]# mkdir xs-tools
[root@xenserver]# mount /dev/cdrom /mnt/xs-tools/
mount: block device /dev/xvdd is write-protected, mounting read-only
[root@xenserver]# cd /mnt/xs-tools/Linux/
[root@xenserver]# bash install.sh

If your operating sysem is windows, here is the reference.