feat: KVM虚拟化管理平台初始版本
This commit is contained in:
admin
@@ -0,0 +1,207 @@
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"""资源监控路由"""
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from fastapi import APIRouter, HTTPException
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from app.libvirt_conn import libvirt_conn
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import libvirt
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import time
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import threading
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router = APIRouter()
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# 简易内存缓存
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_stats_cache = {}
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_cache_lock = threading.Lock()
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@router.get("/overview")
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async def monitor_overview():
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"""宿主机总览监控"""
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conn = libvirt_conn.conn
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# 宿主机信息
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host_info = conn.getInfo()
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hostname = conn.getHostname()
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# CPU 使用率（通过 node info）
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cpu_stats = conn.getCPUStats(-1, 0) # 全局 CPU 统计
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cpu_total = cpu_stats.get("user", 0) + cpu_stats.get("system", 0) + cpu_stats.get("idle", 0)
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cpu_used = cpu_stats.get("user", 0) + cpu_stats.get("system", 0)
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cpu_percent = round(cpu_used / cpu_total * 100, 1) if cpu_total > 0 else 0
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# 内存
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memory_total_kb = host_info[1]
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# 获取可用内存
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try:
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with open("/proc/meminfo", "r") as f:
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meminfo = {}
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for line in f:
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parts = line.split()
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if len(parts) >= 2:
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meminfo[parts[0].rstrip(":")] = int(parts[1])
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mem_total_mb = meminfo.get("MemTotal", 0) // 1024
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mem_available_mb = meminfo.get("MemAvailable", 0) // 1024
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mem_used_mb = mem_total_mb - mem_available_mb
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mem_percent = round(mem_used_mb / mem_total_mb * 100, 1) if mem_total_mb > 0 else 0
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except Exception:
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mem_total_mb = memory_total_kb // 1024
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mem_used_mb = 0
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mem_available_mb = mem_total_mb
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mem_percent = 0
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# 虚拟机统计
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domains = conn.listAllDomains(0)
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running = sum(1 for d in domains if d.isActive())
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stopped = len(domains) - running
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return {
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"hostname": hostname,
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"cpu": {
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"cores": host_info[2],
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"speed_mhz": host_info[3],
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"usage_percent": cpu_percent,
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},
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"memory": {
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"total_mb": mem_total_mb,
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"used_mb": mem_used_mb,
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"available_mb": mem_available_mb,
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"usage_percent": mem_percent,
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},
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"vms": {
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"total": len(domains),
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"running": running,
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"stopped": stopped,
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},
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}
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@router.get("/vm/{name}")
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async def monitor_vm(name: str):
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"""获取虚拟机实时监控数据"""
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conn = libvirt_conn.conn
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try:
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dom = conn.lookupByName(name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
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if not dom.isActive():
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return {"name": name, "state": "stopped", "cpu_percent": 0, "memory": {}}
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# CPU 百分比
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cpu_percent = _get_vm_cpu_percent(dom)
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# 内存
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mem_stats = {}
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try:
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raw = dom.memoryStats()
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mem_stats = {
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"rss_mb": raw.get("rss", 0) // 1024 if "rss" in raw else 0,
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"actual_mb": raw.get("actual", 0) // 1024 if "actual" in raw else 0,
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"available_mb": raw.get("available", 0) // 1024 if "available" in raw else 0,
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"usage_percent": round(
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raw.get("rss", 0) / raw.get("actual", 1) * 100, 1
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) if "rss" in raw and "actual" in raw else 0,
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}
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except Exception:
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pass
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# 磁盘IO
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disk_stats = _get_vm_disk_stats(dom)
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# 网络IO
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net_stats = _get_vm_net_stats(dom)
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return {
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"name": name,
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"state": "running",
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"cpu_percent": cpu_percent,
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"memory": mem_stats,
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"disk": disk_stats,
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"network": net_stats,
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}
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def _get_vm_cpu_percent(dom) -> float:
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"""计算虚拟机 CPU 使用率"""
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cache_key = f"cpu_{dom.name()}"
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try:
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# 第一次采样
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info1 = dom.info()
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cpu_time1 = info1[2]
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t1 = time.time()
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# 从缓存获取上一次数据
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with _cache_lock:
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prev = _stats_cache.get(cache_key)
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if prev:
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cpu_time0, t0 = prev
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elapsed = t1 - t0
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cpu_diff = cpu_time1 - cpu_time0
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# CPU时间单位是纳秒
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cpu_percent = round((cpu_diff / 1e9) / elapsed * 100, 1)
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cpu_percent = min(cpu_percent, 100.0)
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else:
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cpu_percent = 0.0
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# 更新缓存
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with _cache_lock:
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_stats_cache[cache_key] = (cpu_time1, t1)
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return cpu_percent
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except Exception:
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return 0.0
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def _get_vm_disk_stats(dom) -> list:
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"""获取虚拟机磁盘IO"""
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from lxml import etree
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stats = []
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try:
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xml = etree.fromstring(dom.XMLDesc(0).encode())
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for disk in xml.findall(".//disk[@device='disk']"):
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target = disk.find("target")
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if target is not None:
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dev = target.get("dev", "")
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try:
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s = dom.blockStats(dev)
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stats.append({
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"dev": dev,
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"read_bytes": s[1],
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"write_bytes": s[3],
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"read_requests": s[0],
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"write_requests": s[2],
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})
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except Exception:
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pass
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except Exception:
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pass
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return stats
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def _get_vm_net_stats(dom) -> list:
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"""获取虚拟机网络IO"""
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from lxml import etree
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stats = []
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try:
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xml = etree.fromstring(dom.XMLDesc(0).encode())
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for iface in xml.findall(".//interface"):
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target = iface.find("target")
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if target is not None:
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dev = target.get("dev", "")
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try:
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s = dom.interfaceStats(dev)
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stats.append({
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"dev": dev,
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"rx_bytes": s[0],
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"tx_bytes": s[4],
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"rx_packets": s[1],
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"tx_packets": s[5],
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"rx_errors": s[2],
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"tx_errors": s[6],
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})
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except Exception:
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pass
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except Exception:
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pass
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return stats
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@@ -0,0 +1,175 @@
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"""网络管理路由"""
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from fastapi import APIRouter, HTTPException
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from pydantic import BaseModel, Field
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from typing import Optional, List
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from lxml import etree
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from app.libvirt_conn import libvirt_conn
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import libvirt
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router = APIRouter()
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class NetworkCreate(BaseModel):
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name: str = Field(..., description="网络名称")
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mode: str = Field("nat", description="模式: nat/bridge/isolated")
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subnet: str = Field("192.168.100.0/24", description="子网")
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bridge: Optional[str] = Field(None, description="桥接网卡名(mode=bridge时必填)")
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dhcp_start: Optional[str] = Field(None, description="DHCP起始IP")
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dhcp_end: Optional[str] = Field(None, description="DHCP结束IP")
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@router.get("/list")
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async def list_networks():
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"""列出所有网络"""
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conn = libvirt_conn.conn
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networks = conn.listAllNetworks(0)
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result = []
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for net in networks:
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xml = etree.fromstring(net.XMLDesc(0).encode())
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# 解析网络信息
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forward = xml.find("forward")
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mode = forward.get("mode", "isolated") if forward is not None else "isolated"
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ip_elem = xml.find("ip")
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address = ip_elem.get("address", "") if ip_elem is not None else ""
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netmask = ip_elem.get("netmask", "") if ip_elem is not None else ""
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bridge = xml.find("bridge")
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bridge_name = bridge.get("name", "") if bridge is not None else ""
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# DHCP范围
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dhcp_range = None
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dhcp = xml.find(".//dhcp")
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if dhcp is not None:
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r = dhcp.find("range")
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if r is not None:
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dhcp_range = {
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"start": r.get("start", ""),
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"end": r.get("end", ""),
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}
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# 活跃租约
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leases = []
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try:
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for lease in net.DHCPLeases():
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leases.append({
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"ip": lease.get("ipaddr", ""),
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"mac": lease.get("mac", ""),
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"hostname": lease.get("hostname", ""),
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"expiry": lease.get("expirytime", 0),
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})
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except Exception:
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pass
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result.append({
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"name": net.name(),
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"active": net.isActive() == 1,
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"persistent": net.isPersistent() == 1,
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"autostart": net.autostart() == 1,
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"mode": mode,
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"address": address,
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"netmask": netmask,
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"bridge": bridge_name,
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"dhcp": dhcp_range,
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"leases": leases,
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})
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return {"networks": result, "total": len(result)}
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@router.get("/detail/{name}")
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async def get_network(name: str):
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"""获取网络详情"""
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conn = libvirt_conn.conn
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try:
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net = conn.networkLookupByName(name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail=f"网络 '{name}' 不存在")
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xml_str = net.XMLDesc(0)
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return {"name": name, "xml": xml_str, "active": net.isActive() == 1}
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@router.post("/create")
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async def create_network(net: NetworkCreate):
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"""创建网络"""
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if net.mode == "bridge" and not net.bridge:
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raise HTTPException(status_code=400, detail="桥接模式必须指定桥接网卡")
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if net.mode == "bridge":
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xml = f"""<network>
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<name>{net.name}</name>
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<forward mode='bridge'/>
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<bridge name='{net.bridge}'/>
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</network>"""
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else:
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# NAT或隔离模式
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import ipaddress
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network = ipaddress.ip_network(net.subnet, strict=False)
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gateway = str(network.network_address + 1)
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dhcp_xml = ""
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if net.mode == "nat":
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start = net.dhcp_start or str(network.network_address + 2)
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end = net.dhcp_end or str(network.network_address + 254)
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dhcp_xml = f"""
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<dhcp>
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<range start='{start}' end='{end}'/>
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</dhcp>"""
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forward_xml = f"<forward mode='{net.mode}'/>" if net.mode == "nat" else ""
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netmask = str(network.netmask)
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xml = f"""<network>
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<name>{net.name}</name>
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{forward_xml}
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<bridge name='virbr-{net.name[:8]}' stp='on' delay='0'/>
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<ip address='{gateway}' netmask='{netmask}'>{dhcp_xml}
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</ip>
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</network>"""
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with libvirt_conn.get_rw() as rw_conn:
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try:
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n = rw_conn.networkDefineXML(xml)
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n.setAutostart(1)
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n.create()
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return {"message": f"网络 '{net.name}' 创建成功"}
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except libvirt.libvirtError as e:
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raise HTTPException(status_code=500, detail=f"创建网络失败: {str(e)}")
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@router.delete("/delete/{name}")
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async def delete_network(name: str):
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"""删除网络"""
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with libvirt_conn.get_rw() as rw_conn:
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try:
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net = rw_conn.networkLookupByName(name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail=f"网络 '{name}' 不存在")
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if net.isActive():
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net.destroy()
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net.undefine()
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return {"message": f"网络 '{name}' 已删除"}
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@router.post("/action/{name}")
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async def network_action(name: str, action: str):
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"""网络操作: start/stop"""
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with libvirt_conn.get_rw() as rw_conn:
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try:
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net = rw_conn.networkLookupByName(name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail=f"网络 '{name}' 不存在")
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try:
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if action == "start":
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net.create()
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elif action == "stop":
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net.destroy()
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else:
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raise HTTPException(status_code=400, detail=f"不支持的操作: {action}")
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return {"message": f"网络 '{name}' {action} 成功"}
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except libvirt.libvirtError as e:
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raise HTTPException(status_code=500, detail=f"操作失败: {str(e)}")
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@@ -0,0 +1,114 @@
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"""快照管理路由"""
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from fastapi import APIRouter, HTTPException
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from pydantic import BaseModel, Field
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from typing import Optional
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from lxml import etree
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from app.libvirt_conn import libvirt_conn
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import libvirt
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router = APIRouter()
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class SnapshotCreate(BaseModel):
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name: str = Field(..., description="快照名称")
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description: Optional[str] = Field(None, description="快照描述")
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@router.get("/list/{vm_name}")
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async def list_snapshots(vm_name: str):
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"""列出虚拟机的所有快照"""
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conn = libvirt_conn.conn
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try:
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dom = conn.lookupByName(vm_name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail=f"虚拟机 '{vm_name}' 不存在")
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snapshots = []
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try:
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for snap in dom.listAllSnapshots(0):
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xml = etree.fromstring(snap.getXMLDesc().encode())
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desc = xml.find("description")
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state = xml.find("state")
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creation = xml.find("creationTime")
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snapshots.append({
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"name": snap.getName(),
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"state": state.text if state is not None else "",
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"description": desc.text if desc is not None else "",
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"creation_time": int(creation.text) if creation is not None else 0,
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"is_current": snap.isCurrent() == 1,
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})
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except libvirt.libvirtError:
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pass # 没有快照
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return {"vm": vm_name, "snapshots": snapshots, "total": len(snapshots)}
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@router.post("/create/{vm_name}")
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async def create_snapshot(vm_name: str, snap: SnapshotCreate):
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"""创建快照"""
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with libvirt_conn.get_rw() as rw_conn:
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try:
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dom = rw_conn.lookupByName(vm_name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail=f"虚拟机 '{vm_name}' 不存在")
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desc_xml = f"<description>{snap.description}</description>" if snap.description else ""
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xml = f"""<domainsnapshot>
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<name>{snap.name}</name>
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{desc_xml}
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</domainsnapshot>"""
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try:
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dom.snapshotCreateXML(xml, 0)
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return {"message": f"快照 '{snap.name}' 创建成功"}
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except libvirt.libvirtError as e:
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raise HTTPException(status_code=500, detail=f"创建快照失败: {str(e)}")
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@router.post("/revert/{vm_name}/{snap_name}")
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async def revert_snapshot(vm_name: str, snap_name: str):
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"""恢复快照"""
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with libvirt_conn.get_rw() as rw_conn:
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try:
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dom = rw_conn.lookupByName(vm_name)
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snap = dom.snapshotLookupByName(snap_name)
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except libvirt.libvirtError:
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raise HTTPException(status_code=404, detail="虚拟机或快照不存在")
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try:
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dom.revertToSnapshot(snap)
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return {"message": f"已恢复到快照 '{snap_name}'"}
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except libvirt.libvirtError as e:
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raise HTTPException(status_code=500, detail=f"恢复快照失败: {str(e)}")
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|
||||
@router.delete("/delete/{vm_name}/{snap_name}")
|
||||
async def delete_snapshot(vm_name: str, snap_name: str):
|
||||
"""删除快照"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
dom = rw_conn.lookupByName(vm_name)
|
||||
snap = dom.snapshotLookupByName(snap_name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail="虚拟机或快照不存在")
|
||||
|
||||
try:
|
||||
snap.delete(0)
|
||||
return {"message": f"快照 '{snap_name}' 已删除"}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"删除快照失败: {str(e)}")
|
||||
|
||||
|
||||
@router.get("/detail/{vm_name}/{snap_name}")
|
||||
async def get_snapshot_detail(vm_name: str, snap_name: str):
|
||||
"""获取快照详情"""
|
||||
conn = libvirt_conn.conn
|
||||
try:
|
||||
dom = conn.lookupByName(vm_name)
|
||||
snap = dom.snapshotLookupByName(snap_name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail="虚拟机或快照不存在")
|
||||
|
||||
return {"name": snap_name, "vm": vm_name, "xml": snap.getXMLDesc()}
|
||||
@@ -0,0 +1,180 @@
|
||||
"""存储池管理路由"""
|
||||
from fastapi import APIRouter, HTTPException
|
||||
from pydantic import BaseModel, Field
|
||||
from typing import Optional
|
||||
from lxml import etree
|
||||
import os
|
||||
|
||||
from app.libvirt_conn import libvirt_conn
|
||||
import libvirt
|
||||
|
||||
router = APIRouter()
|
||||
|
||||
|
||||
class PoolCreate(BaseModel):
|
||||
name: str = Field(..., description="存储池名称")
|
||||
path: str = Field(..., description="存储池路径")
|
||||
type: str = Field("dir", description="存储池类型: dir/fs/logical")
|
||||
|
||||
|
||||
class VolCreate(BaseModel):
|
||||
name: str = Field(..., description="卷名称")
|
||||
capacity_gb: int = Field(20, description="容量(GB)")
|
||||
format: str = Field("qcow2", description="格式: qcow2/raw")
|
||||
|
||||
|
||||
@router.get("/pools")
|
||||
async def list_pools():
|
||||
"""列出所有存储池"""
|
||||
conn = libvirt_conn.conn
|
||||
pools = conn.listAllStoragePools(0)
|
||||
result = []
|
||||
for pool in pools:
|
||||
info = pool.info()
|
||||
xml = etree.fromstring(pool.XMLDesc(0).encode())
|
||||
target = xml.find(".//target/path")
|
||||
result.append({
|
||||
"name": pool.name(),
|
||||
"state": ["inactive", "building", "running", "degraded", "inaccessible"][info[0]] if info[0] < 5 else "unknown",
|
||||
"capacity_gb": round(info[1] / (1024**3), 2),
|
||||
"allocation_gb": round(info[2] / (1024**3), 2),
|
||||
"available_gb": round(info[3] / (1024**3), 2),
|
||||
"path": target.text if target is not None else "",
|
||||
"autostart": pool.autostart() == 1,
|
||||
"persistent": pool.isPersistent() == 1,
|
||||
})
|
||||
return {"pools": result, "total": len(result)}
|
||||
|
||||
|
||||
@router.get("/pool/{name}")
|
||||
async def get_pool(name: str):
|
||||
"""获取存储池详情"""
|
||||
conn = libvirt_conn.conn
|
||||
try:
|
||||
pool = conn.storagePoolLookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"存储池 '{name}' 不存在")
|
||||
|
||||
info = pool.info()
|
||||
xml = etree.fromstring(pool.XMLDesc(0).encode())
|
||||
|
||||
# 获取卷列表
|
||||
volumes = []
|
||||
try:
|
||||
for vol_name in pool.listVolumes():
|
||||
vol = pool.storageVolLookupByName(vol_name)
|
||||
vol_info = vol.info()
|
||||
volumes.append({
|
||||
"name": vol_name,
|
||||
"path": vol.path(),
|
||||
"type": vol_info[0],
|
||||
"capacity_gb": round(vol_info[1] / (1024**3), 2),
|
||||
"allocation_gb": round(vol_info[2] / (1024**3), 2),
|
||||
})
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
target = xml.find(".//target/path")
|
||||
return {
|
||||
"name": pool.name(),
|
||||
"state": ["inactive", "building", "running", "degraded", "inaccessible"][info[0]] if info[0] < 5 else "unknown",
|
||||
"capacity_gb": round(info[1] / (1024**3), 2),
|
||||
"allocation_gb": round(info[2] / (1024**3), 2),
|
||||
"available_gb": round(info[3] / (1024**3), 2),
|
||||
"path": target.text if target is not None else "",
|
||||
"autostart": pool.autostart() == 1,
|
||||
"volumes": volumes,
|
||||
"volume_count": len(volumes),
|
||||
}
|
||||
|
||||
|
||||
@router.post("/pool/create")
|
||||
async def create_pool(pool: PoolCreate):
|
||||
"""创建存储池"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
xml = f"""<pool type='{pool.type}'>
|
||||
<name>{pool.name}</name>
|
||||
<target>
|
||||
<path>{pool.path}</path>
|
||||
</target>
|
||||
</pool>"""
|
||||
try:
|
||||
os.makedirs(pool.path, exist_ok=True)
|
||||
p = rw_conn.storagePoolDefineXML(xml, 0)
|
||||
p.setAutostart(1)
|
||||
p.create(0)
|
||||
return {"message": f"存储池 '{pool.name}' 创建成功"}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"创建存储池失败: {str(e)}")
|
||||
|
||||
|
||||
@router.delete("/pool/{name}")
|
||||
async def delete_pool(name: str):
|
||||
"""删除存储池"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
pool = rw_conn.storagePoolLookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"存储池 '{name}' 不存在")
|
||||
|
||||
if pool.info()[0] == libvirt.VIR_STORAGE_POOL_RUNNING:
|
||||
pool.destroy()
|
||||
|
||||
pool.undefine()
|
||||
return {"message": f"存储池 '{name}' 已删除"}
|
||||
|
||||
|
||||
@router.post("/pool/{name}/volume")
|
||||
async def create_volume(name: str, vol: VolCreate):
|
||||
"""在存储池中创建卷"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
pool = rw_conn.storagePoolLookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"存储池 '{name}' 不存在")
|
||||
|
||||
vol_xml = f"""<volume>
|
||||
<name>{vol.name}</name>
|
||||
<capacity unit='GiB'>{vol.capacity_gb}</capacity>
|
||||
<allocation unit='GiB'>1</allocation>
|
||||
<target>
|
||||
<format type='{vol.format}'/>
|
||||
</target>
|
||||
</volume>"""
|
||||
try:
|
||||
pool.createXML(vol_xml, 0)
|
||||
return {"message": f"卷 '{vol.name}' 创建成功"}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"创建卷失败: {str(e)}")
|
||||
|
||||
|
||||
@router.delete("/pool/{pool_name}/volume/{vol_name}")
|
||||
async def delete_volume(pool_name: str, vol_name: str):
|
||||
"""删除卷"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
pool = rw_conn.storagePoolLookupByName(pool_name)
|
||||
vol = pool.storageVolLookupByName(vol_name)
|
||||
vol.delete(0)
|
||||
return {"message": f"卷 '{vol_name}' 已删除"}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"删除卷失败: {str(e)}")
|
||||
|
||||
|
||||
@router.get("/isos")
|
||||
async def list_isos():
|
||||
"""列出可用的ISO镜像"""
|
||||
iso_dirs = ["/var/lib/libvirt/iso", "/isos", "/mnt/isos"]
|
||||
isos = []
|
||||
for d in iso_dirs:
|
||||
if os.path.isdir(d):
|
||||
for f in os.listdir(d):
|
||||
if f.lower().endswith(".iso"):
|
||||
fp = os.path.join(d, f)
|
||||
size = os.path.getsize(fp)
|
||||
isos.append({
|
||||
"name": f,
|
||||
"path": fp,
|
||||
"size_gb": round(size / (1024**3), 2),
|
||||
})
|
||||
return {"isos": isos, "total": len(isos)}
|
||||
@@ -0,0 +1,387 @@
|
||||
"""虚拟机管理路由"""
|
||||
from fastapi import APIRouter, HTTPException
|
||||
from pydantic import BaseModel, Field
|
||||
from typing import Optional, List
|
||||
from lxml import etree
|
||||
import os
|
||||
|
||||
from app.libvirt_conn import libvirt_conn
|
||||
from app.utils import parse_vm_info, generate_vm_xml
|
||||
import libvirt
|
||||
|
||||
router = APIRouter()
|
||||
|
||||
|
||||
# ===== 请求模型 =====
|
||||
|
||||
class VMCreate(BaseModel):
|
||||
name: str = Field(..., description="虚拟机名称")
|
||||
memory_mb: int = Field(2048, description="内存大小(MB)")
|
||||
vcpus: int = Field(2, description="CPU核心数")
|
||||
disk_gb: int = Field(20, description="磁盘大小(GB)")
|
||||
pool_name: str = Field("default", description="存储池名称")
|
||||
iso_path: Optional[str] = Field(None, description="ISO安装镜像路径")
|
||||
network: str = Field("default", description="网络名称")
|
||||
description: Optional[str] = Field(None, description="描述")
|
||||
|
||||
|
||||
class VMAction(BaseModel):
|
||||
action: str = Field(..., description="操作: start/stop/restart/pause/resume/force_stop")
|
||||
|
||||
|
||||
class VMClone(BaseModel):
|
||||
new_name: str = Field(..., description="新虚拟机名称")
|
||||
|
||||
|
||||
# ===== API =====
|
||||
|
||||
@router.get("/list")
|
||||
async def list_vms():
|
||||
"""获取所有虚拟机列表"""
|
||||
conn = libvirt_conn.conn
|
||||
domains = conn.listAllDomains(0)
|
||||
vms = []
|
||||
for dom in domains:
|
||||
try:
|
||||
vm_info = parse_vm_info(dom)
|
||||
vms.append(vm_info)
|
||||
except Exception as e:
|
||||
vms.append({
|
||||
"name": dom.name(),
|
||||
"uuid": dom.UUIDString(),
|
||||
"state": "error",
|
||||
"error": str(e),
|
||||
})
|
||||
return {"vms": vms, "total": len(vms)}
|
||||
|
||||
|
||||
@router.get("/detail/{name}")
|
||||
async def get_vm_detail(name: str):
|
||||
"""获取虚拟机详情"""
|
||||
conn = libvirt_conn.conn
|
||||
try:
|
||||
dom = conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
info = parse_vm_info(dom)
|
||||
|
||||
# 运行中的虚拟机获取更多动态信息
|
||||
if info["state"] == "running":
|
||||
try:
|
||||
# CPU 时间
|
||||
_, _, cpu_time, _ = dom.info()
|
||||
info["cpu_time_ns"] = cpu_time
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
# 内存使用
|
||||
try:
|
||||
mem_stats = dom.memoryStats()
|
||||
info["memory_stats"] = mem_stats
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
# 块设备统计
|
||||
try:
|
||||
block_stats = []
|
||||
for disk in info.get("disks", []):
|
||||
if disk.get("dev"):
|
||||
stats = dom.blockStats(disk["dev"])
|
||||
block_stats.append({
|
||||
"dev": disk["dev"],
|
||||
"read_bytes": stats[1],
|
||||
"write_bytes": stats[3],
|
||||
"read_requests": stats[0],
|
||||
"write_requests": stats[2],
|
||||
})
|
||||
info["block_stats"] = block_stats
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
# 网络统计
|
||||
try:
|
||||
net_stats = []
|
||||
for i, iface in enumerate(info.get("interfaces", [])):
|
||||
if iface.get("mac"):
|
||||
stats = dom.interfaceStats(iface["mac"])
|
||||
net_stats.append({
|
||||
"mac": iface["mac"],
|
||||
"rx_bytes": stats[0],
|
||||
"tx_bytes": stats[4],
|
||||
"rx_packets": stats[1],
|
||||
"tx_packets": stats[5],
|
||||
})
|
||||
info["net_stats"] = net_stats
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
return info
|
||||
|
||||
|
||||
@router.post("/create")
|
||||
async def create_vm(vm: VMCreate):
|
||||
"""创建虚拟机"""
|
||||
conn = libvirt_conn.conn
|
||||
|
||||
# 检查名称是否已存在
|
||||
try:
|
||||
conn.lookupByName(vm.name)
|
||||
raise HTTPException(status_code=400, detail=f"虚拟机 '{vm.name}' 已存在")
|
||||
except libvirt.libvirtError:
|
||||
pass # 不存在，继续创建
|
||||
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
# 确定磁盘路径
|
||||
pool = rw_conn.storagePoolLookupByName(vm.pool_name)
|
||||
pool_info = pool.info()
|
||||
pool_xml = etree.fromstring(pool.XMLDesc(0).encode())
|
||||
target = pool_xml.find(".//target/path")
|
||||
pool_path = target.text if target is not None else "/var/lib/libvirt/images"
|
||||
|
||||
disk_path = os.path.join(pool_path, f"{vm.name}.qcow2")
|
||||
|
||||
# 创建 qcow2 磁盘
|
||||
# 创建卷的 XML
|
||||
vol_xml = f"""<volume>
|
||||
<name>{vm.name}.qcow2</name>
|
||||
<capacity unit='GiB'>{vm.disk_gb}</capacity>
|
||||
<allocation unit='GiB'>1</allocation>
|
||||
<target>
|
||||
<format type='qcow2'/>
|
||||
<permissions>
|
||||
<mode>0644</mode>
|
||||
</permissions>
|
||||
</target>
|
||||
</volume>"""
|
||||
pool.createXML(vol_xml, 0)
|
||||
|
||||
# 生成虚拟机XML
|
||||
vm_xml = generate_vm_xml(
|
||||
name=vm.name,
|
||||
memory_mb=vm.memory_mb,
|
||||
vcpus=vm.vcpus,
|
||||
disk_path=disk_path,
|
||||
disk_size_gb=vm.disk_gb,
|
||||
iso_path=vm.iso_path,
|
||||
network=vm.network,
|
||||
)
|
||||
|
||||
# 定义并启动
|
||||
dom = rw_conn.defineXML(vm_xml)
|
||||
dom.create()
|
||||
|
||||
return {"message": f"虚拟机 '{vm.name}' 创建成功", "name": vm.name}
|
||||
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"创建虚拟机失败: {str(e)}")
|
||||
|
||||
|
||||
@router.post("/action/{name}")
|
||||
async def vm_action(name: str, action: VMAction):
|
||||
"""虚拟机操作"""
|
||||
conn = libvirt_conn.conn
|
||||
try:
|
||||
dom = conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
rw_dom = rw_conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
act = action.action
|
||||
try:
|
||||
if act == "start":
|
||||
rw_dom.create()
|
||||
msg = f"虚拟机 '{name}' 已启动"
|
||||
elif act == "stop":
|
||||
rw_dom.shutdown()
|
||||
msg = f"虚拟机 '{name}' 正在关闭"
|
||||
elif act == "force_stop":
|
||||
rw_dom.destroy()
|
||||
msg = f"虚拟机 '{name}' 已强制关闭"
|
||||
elif act == "restart":
|
||||
rw_dom.reboot(libvirt.VIR_DOMAIN_REBOOT_DEFAULT)
|
||||
msg = f"虚拟机 '{name}' 正在重启"
|
||||
elif act == "pause":
|
||||
rw_dom.suspend()
|
||||
msg = f"虚拟机 '{name}' 已暂停"
|
||||
elif act == "resume":
|
||||
rw_dom.resume()
|
||||
msg = f"虚拟机 '{name}' 已恢复"
|
||||
else:
|
||||
raise HTTPException(status_code=400, detail=f"不支持的操作: {act}")
|
||||
return {"message": msg}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"操作失败: {str(e)}")
|
||||
|
||||
|
||||
@router.delete("/delete/{name}")
|
||||
async def delete_vm(name: str, force: bool = False):
|
||||
"""删除虚拟机"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
dom = rw_conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
state, _ = dom.info()[0:2]
|
||||
if state == libvirt.VIR_DOMAIN_RUNNING:
|
||||
if force:
|
||||
dom.destroy()
|
||||
else:
|
||||
raise HTTPException(
|
||||
status_code=400,
|
||||
detail=f"虚拟机 '{name}' 正在运行，请先关闭或使用 force=true"
|
||||
)
|
||||
|
||||
# 获取磁盘路径
|
||||
xml_desc = dom.XMLDesc(0)
|
||||
tree = etree.fromstring(xml_desc.encode())
|
||||
disk_files = []
|
||||
for disk in tree.findall(".//disk[@device='disk']/source"):
|
||||
f = disk.get("file")
|
||||
if f:
|
||||
disk_files.append(f)
|
||||
|
||||
# 取消定义
|
||||
dom.undefine()
|
||||
|
||||
# 删除磁盘文件
|
||||
for f in disk_files:
|
||||
try:
|
||||
os.remove(f)
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
return {"message": f"虚拟机 '{name}' 已删除", "removed_disks": disk_files}
|
||||
|
||||
|
||||
@router.post("/clone/{name}")
|
||||
async def clone_vm(name: str, clone: VMClone):
|
||||
"""克隆虚拟机"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
dom = rw_conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
# 检查新名称是否已存在
|
||||
try:
|
||||
rw_conn.lookupByName(clone.new_name)
|
||||
raise HTTPException(status_code=400, detail=f"虚拟机 '{clone.new_name}' 已存在")
|
||||
except libvirt.libvirtError:
|
||||
pass
|
||||
|
||||
try:
|
||||
# 获取源虚拟机 XML
|
||||
xml_desc = dom.XMLDesc(libvirt.VIR_DOMAIN_XML_SECURE)
|
||||
tree = etree.fromstring(xml_desc.encode())
|
||||
|
||||
# 修改名称
|
||||
tree.find("name").text = clone.new_name
|
||||
|
||||
# 修改 UUID（删除让libvirt自动生成）
|
||||
uuid_elem = tree.find("uuid")
|
||||
if uuid_elem is not None:
|
||||
tree.remove(uuid_elem)
|
||||
|
||||
# 修改磁盘路径
|
||||
import uuid as uuid_mod
|
||||
new_uuid = str(uuid_mod.uuid4())[:8]
|
||||
for disk in tree.findall(".//disk[@device='disk']"):
|
||||
source = disk.find("source")
|
||||
if source is not None:
|
||||
old_path = source.get("file", "")
|
||||
new_path = old_path.replace(f"{name}.qcow2", f"{clone.new_name}.qcow2")
|
||||
source.set("file", new_path)
|
||||
|
||||
# 修改 MAC 地址
|
||||
for mac in tree.findall(".//interface/mac"):
|
||||
import random
|
||||
mac_addr = "52:54:00:%02x:%02x:%02x" % (
|
||||
random.randint(0, 255),
|
||||
random.randint(0, 255),
|
||||
random.randint(0, 255),
|
||||
)
|
||||
mac.set("address", mac_addr)
|
||||
|
||||
# 复制磁盘
|
||||
old_disk_path = ""
|
||||
new_disk_path = ""
|
||||
for disk in tree.findall(".//disk[@device='disk']/source"):
|
||||
old_disk_path = disk.get("file", "")
|
||||
new_disk_path = old_disk_path.replace(f"{name}.qcow2", f"{clone.new_name}.qcow2")
|
||||
|
||||
if old_disk_path and os.path.exists(old_disk_path):
|
||||
import subprocess
|
||||
subprocess.run(
|
||||
["qemu-img", "create", "-f", "qcow2", "-b", old_disk_path, "-F", "qcow2", new_disk_path],
|
||||
check=True,
|
||||
capture_output=True,
|
||||
)
|
||||
|
||||
# 定义新虚拟机
|
||||
new_xml = etree.tostring(tree, encoding="unicode")
|
||||
rw_conn.defineXML(new_xml)
|
||||
|
||||
return {"message": f"虚拟机 '{name}' 已克隆为 '{clone.new_name}'"}
|
||||
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"克隆失败: {str(e)}")
|
||||
|
||||
|
||||
@router.get("/xml/{name}")
|
||||
async def get_vm_xml(name: str):
|
||||
"""获取虚拟机 XML 配置"""
|
||||
conn = libvirt_conn.conn
|
||||
try:
|
||||
dom = conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
return {"name": name, "xml": dom.XMLDesc(libvirt.VIR_DOMAIN_XML_SECURE)}
|
||||
|
||||
|
||||
@router.put("/xml/{name}")
|
||||
async def update_vm_xml(name: str, xml: dict):
|
||||
"""更新虚拟机 XML 配置"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
dom = rw_conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
xml_str = xml.get("xml", "")
|
||||
if not xml_str:
|
||||
raise HTTPException(status_code=400, detail="XML不能为空")
|
||||
|
||||
try:
|
||||
rw_conn.defineXML(xml_str)
|
||||
return {"message": f"虚拟机 '{name}' 配置已更新"}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"更新失败: {str(e)}")
|
||||
|
||||
|
||||
@router.post("/migrate/{name}")
|
||||
async def migrate_vm(name: str, dest_uri: str, live: bool = True):
|
||||
"""迁移虚拟机"""
|
||||
with libvirt_conn.get_rw() as rw_conn:
|
||||
try:
|
||||
dom = rw_conn.lookupByName(name)
|
||||
except libvirt.libvirtError:
|
||||
raise HTTPException(status_code=404, detail=f"虚拟机 '{name}' 不存在")
|
||||
|
||||
flags = libvirt.VIR_MIGRATE_LIVE if live else 0
|
||||
flags |= libvirt.VIR_MIGRATE_PERSIST_DEST
|
||||
|
||||
try:
|
||||
dest_conn = libvirt.open(dest_uri)
|
||||
dom.migrate(dest_conn, flags, None, None, 0)
|
||||
return {"message": f"虚拟机 '{name}' 已迁移到 {dest_uri}"}
|
||||
except libvirt.libvirtError as e:
|
||||
raise HTTPException(status_code=500, detail=f"迁移失败: {str(e)}")
|
||||
Reference in New Issue
Block a user