需求背景

有个产品需求，需要在一台linux上装多个虚拟机，然后每个虚拟机单独部署一个产品，然后需要虚拟机的一个产品去控制宿主机中安装虚拟机的状态

注意： 如果虚拟机中装的产品去连宿主机的Libvirt服务，那么虚拟机一定要装 libvirt 安装命令： yum install -y libvirt

Libvirt官网

1，虚拟机安装

博客

virsh 版本 4.5.0

2，宿主机Libvirt配置

2.1 libvirtd文件配置

开启 这两项配置
LIBVIRTD_CONFIG=/etc/libvirt/libvirtd.conf
LIBVIRTD_ARGS=“–listen”

vi /etc/sysconfig/libvirtd

2.2 配置 libvirtd.conf文件

vi  /etc/libvirt/libvirtd.conf

修改内容如下

listen_tls = 0
listen_tcp = 1
tcp_port = "16509"
listen_addr = "0.0.0.0"
auth_tcp = "none"

2.3 重启libvirtd服务

systemctl restart libvirtd

3，Java代码

3.1 pom引入jar包

     org.libvirtlibvirt0.5.1net.java.dev.jnajna5.12.1

3.2 代码

获取虚拟机列表，重启，强制关机，挂起，恢复，详情，关机，注销等虚拟机操作

 @GetMapping("/test")@ApiOperation("/test")public String test(@RequestParam String url) throws Exception {try {Connect connect = new Connect(url, true);System.out.println(connect.getHostName());System.out.println("dddd" + connect.getFreeMemory());} catch (LibvirtException e) {System.out.println("exception caught:" + e);System.out.println(e.getError());return e.getError().getMessage();}return "";}@GetMapping("/domains")@ApiOperation("/domains")private List listDomain(@RequestParam String url) throws LibvirtException {Map map = new HashMap();Connect connect = new Connect(url, true);int[] idsOfDomain = connect.listDomains();map.put("listDomains", idsOfDomain);List lists = new ArrayList();for (int id : idsOfDomain) {HostDo hostDo = new HostDo();Domain domain = connect.domainLookupByID(id);hostDo.setId(id);hostDo.setName(domain.getName());hostDo.setStatus(domain.getInfo().state);hostDo.setType(domain.getOSType());hostDo.setMemTotal(domain.getJobInfo().getMemTotal());lists.add(hostDo);}String[] namesOfDefinedDomain = connect.listDefinedDomains();for (String name : namesOfDefinedDomain) {
//            Domain domain = connect.domainLookupByName(name);HostDo hostDo = new HostDo();
//            hostDo.setId(id);hostDo.setName(name);hostDo.setStatus(DomainInfo.DomainState.VIR_DOMAIN_SHUTDOWN);
//            hostDo.setType(domain.getOSType());
//            hostDo.setMemTotal(domain.getJobInfo().getMemTotal());lists.add(hostDo);}return lists;}@GetMapping("/listDemo")@ApiOperation("/listDemo")private List listDemo(@RequestParam String url) throws LibvirtException {Connect connect = new Connect(url, true);List lists = new ArrayList();String[] namesOfDefinedDomain = connect.listDefinedDomains();for (String name : namesOfDefinedDomain) {Domain domain = connect.domainLookupByName(name);HostDo hostDo = new HostDo();hostDo.setId(domain.getID());hostDo.setName(name);hostDo.setStatus(DomainInfo.DomainState.VIR_DOMAIN_SHUTDOWN);hostDo.setType(domain.getOSType());hostDo.setMemTotal(domain.getJobInfo().getMemTotal());lists.add(hostDo);}return lists;}@GetMapping("/detail")@ApiOperation("详情")private Domain detail(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);return connect.domainLookupByName(name);}@GetMapping("/shutdown")@ApiOperation("正常关机")private Domain shutdown(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.shutdown();domain = connect.domainLookupByName(name);return domain;}@GetMapping("/reboot")@ApiOperation("重启")private Domain reboot(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.reboot(0);domain = connect.domainLookupByName(name);return domain;}@GetMapping("/delete")@ApiOperation("注销")private Domain delete(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.destroy();domain.undefine();return domain;}@GetMapping("/forceShutDown")@ApiOperation("强制关机")private Domain forceShutDown(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.destroy();System.out.println(domain.isActive());domain = connect.domainLookupByName(name);return domain;}@GetMapping("/start")@ApiOperation("启动")private Domain start(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.create();System.out.println(domain.isActive());return domain;}@GetMapping("/resume")@ApiOperation("恢复")private Domain resume(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.resume();System.out.println(domain.isActive());return domain;}@GetMapping("/suspend")@ApiOperation("挂起")private Domain suspend(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);domain.suspend();System.out.println(domain.isActive());return domain;}

快照备份

  @GetMapping("/snapshotCurrent")@ApiOperation("生成当前快照")private Domain snapshotCurrent(@RequestParam String url, @RequestParam String name,@RequestParam String snap) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);String snapshotXML = snap;domain.snapshotCreateXML(snapshotXML);System.out.println(domain.isActive());return domain;}@GetMapping("/snapshot-list")@ApiOperation("快照列表")private String[] snapshotListNames(@RequestParam String url, @RequestParam String name) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);String[] snapArray = domain.snapshotListNames();return snapArray;}@GetMapping("/snapshotLookupByName")@ApiOperation("快照详情")private DomainSnapshot snapshotLookupByName(@RequestParam String url, @RequestParam String name, @RequestParam String snapName) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);DomainSnapshot domainSnapshot = domain.snapshotLookupByName(snapName);return domainSnapshot;}@GetMapping("/snapshotNum")@ApiOperation("快照数量")private int snapshotNum(@RequestParam String url, @RequestParam String name, @RequestParam String snapName) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);int i = domain.hasCurrentSnapshot();return i;}@GetMapping("/revertToSnapshot")@ApiOperation("恢复快照")private int revertToSnapshot(@RequestParam String url, @RequestParam String name, @RequestParam String snapName) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);DomainSnapshot domainSnapshot = domain.snapshotLookupByName(snapName);int i = domain.revertToSnapshot(domainSnapshot);return i;}@GetMapping("/snapshot-delete")@ApiOperation("删除快照")private int snapDelete(@RequestParam String url, @RequestParam String name, @RequestParam String snapName) throws LibvirtException {Connect connect = new Connect(url, false);Domain domain = connect.domainLookupByName(name);DomainSnapshot domainSnapshot = domain.snapshotLookupByName(snapName);int delete = domainSnapshot.delete(0);return delete;}

3，调试

qemu+tcp://10.50.1.60:16511/system

未完待续。。。后面会补充克隆等虚拟机操作