故障描述:
web启动虚拟机报错:TASK ERROR: KVM virtualisation configured, but not available. Either disable in VM configuration or enable in BIOS.
ssh启动报错:No ‘get’ handler defined for ‘/nodes/pve/qemu/101/current’

总结两个原因:
1、实体物理机未开启虚拟化功能
2、vmware这种虚拟化软件未开启虚拟化功能
可以先参考下这个文档:https://forum.proxmox.com/threads/task-error-kvm-virtualisation-configured-but-not-available-either-disable-in-vm-configuration-or.54142/