{"id":30267,"date":"2025-04-20T18:25:55","date_gmt":"2025-04-20T10:25:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/30267.html"},"modified":"2025-04-20T18:25:55","modified_gmt":"2025-04-20T10:25:55","slug":"kvm%e8%99%9a%e6%8b%9f%e6%9c%ba%e8%bf%81%e7%a7%bb","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/30267.html","title":{"rendered":"KVM\u865a\u62df\u673a\u8fc1\u79fb"},"content":{"rendered":"<h4>KVM\u865a\u62df\u673a\u8fc1\u79fb<\/h4>\n<ul>\n<li>\n<p>KVM\u865a\u62df\u673a\u8fc1\u79fb&#xff0c;\u662f\u5c06\u67d0\u4e00\u865a\u62df\u673a\u4e0a\u7684\u73af\u5883\u548c\u8f6f\u4ef6\u5b8c\u5168\u590d\u5236\u5230\u53e6\u4e00\u53f0\u7269\u7406\u673a\u4e0a\u7ee7\u7eed\u8fd0\u884c\u3002KVM\u865a\u62df\u673a\u8fc1\u79fb\u53ef\u4ee5\u4f18\u5316\u7cfb\u7edf\u8d1f\u8f7d\u3001\u91cd\u65b0\u89c4\u5212KVM\u865a\u62df\u673a\u5e03\u5c40\u5e76\u7b80\u5316KVM\u865a\u62df\u673a\u7684\u7ba1\u7406\u7ef4\u62a4\u5de5\u4f5c\u3002<\/p>\n<\/li>\n<li>\n<p>KVM\u865a\u62df\u673a\u8fc1\u79fb\u7684\u4e3b\u8981\u5e94\u7528\u573a\u666f\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<ul>\n<li>\n<p>\u5f53\u4e00\u53f0KVM\u5bbf\u4e3b\u673a\u7684\u8d1f\u8f7d\u6bd4\u8f83\u9ad8\u65f6&#xff0c;\u53ef\u5c06\u6e90KVM\u5bbf\u4e3b\u673a\u4e0a\u7684\u90e8\u5206\u865a\u62df\u673a\u8fc1\u79fb\u5230\u8d1f\u8f7d\u8f83\u4f4e\u7684KVM\u5bbf\u4e3b\u673a\u4e2d&#xff0c;\u4ee5\u4fdd\u8bc1\u670d\u52a1\u8d28\u91cf\u3002<\/p>\n<\/li>\n<li>\n<p>\\\\\u901a\u8fc7KVM\u865a\u62df\u673a\u8fc1\u79fb\u5c06\u591a\u53f0\u8d1f\u8f7d\u8f83\u4f4e\u7684KVM\u5bbf\u4e3b\u673a\u4e0a\u7684KVM\u865a\u62df\u673a\u96c6\u4e2d\u8fc1\u79fb\u5230\u67d0\u4e00\u53f0KVM\u5bbf\u4e3b\u673a\u4e0a&#xff0c;\u4ece\u800c\u8fbe\u5230\u8282\u7ea6\u8d44\u6e90\u7684\u76ee\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u5347\u7ea7KVM\u5bbf\u4e3b\u673a\u786c\u4ef6\u8bbe\u5907\u65f6&#xff0c;\u53ef\u4ee5\u5c06KVM\u5bbf\u4e3b\u673a\u4e0a\u8fd0\u884c\u7684KVM\u865a\u62df\u673a\u8fc1\u79fb\u5230\u5176\u4ed6KVM\u5bbf\u4e3b\u673a\u4e0a&#xff0c;\u4ee5\u89e3\u51b3\u5bf9\u786c\u4ef6\u7684\u4f9d\u8d56&#xff0c;\u4ece\u800c\u5b9e\u73b0\u4e1a\u52a1\u4e0d\u4e2d\u65ad\u60c5\u51b5\u4e0b\u5bf9\u7269\u7406\u786c\u4ef6\u8bbe\u5907\u7684\u5347\u7ea7\u3002<\/p>\n<\/li>\n<li>\n<p>\u8de8\u5730\u57df\u8fc1\u79fb&#xff0c;\u5b9e\u73b0KVM\u865a\u62df\u673a\u7684\u8fdc\u7a0b\u8fc1\u79fb\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8fc1\u79fb\u65b9\u5f0f\u53ef\u5206\u4e3a\u4e24\u79cd\u5982\u4e0b\u6240\u793a&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u9759\u6001\u8fc1\u79fb&#xff08;Offline Migration&#xff09;<\/p>\n<p>\u5bf9\u4e8e\u9759\u6001\u8fc1\u79fb&#xff0c;\u4f60\u53ef\u4ee5\u5728\u5bbf\u4e3b\u673a\u4e0a\u4fdd\u5b58\u4e00\u4e2a\u5b8c\u6574\u7684\u5ba2\u6237\u673a\u955c\u50cf\u5feb\u7167&#xff0c;\u7136\u540e\u5728\u5bbf\u4e3b\u673a\u4e2d\u5173\u95ed\u6216\u8005\u6682\u505c\u8be5\u5ba2\u6237\u673a&#xff0c;\u7136\u540e\u5c06\u8be5\u5ba2\u6237\u673a\u7684\u955c\u50cf\u6587\u4ef6\u590d\u5236\u5230\u53e6\u4e00\u53f0\u5bbf\u4e3b\u673a\u4e2d&#xff0c;\u4f7f\u7528\u5728\u6e90\u4e3b\u673a\u4e2d\u542f\u52a8\u8be5\u5ba2\u6237\u673a\u65f6\u7684\u547d\u4ee4\u6765\u542f\u52a8\u590d\u5236\u8fc7\u6765\u7684\u955c\u50cf\u3002<\/p>\n<\/li>\n<li>\n<p>\u52a8\u6001\u8fc1\u79fb&#xff08;Live Migration&#xff09;&#xff08;Online Migration&#xff09;<\/p>\n<p>\u52a8\u6001\u8fc1\u79fb\u662f\u4fdd\u8bc1KVM\u865a\u62df\u673a\u4e0a\u8fd0\u884c\u7684\u5e94\u7528\u6b63\u5e38\u63d0\u4f9b\u670d\u52a1\u7684\u540c\u65f6&#xff0c;\u8ba9KVM\u865a\u62df\u673a\u5728\u4e0d\u540c\u7684KVM\u5bbf\u4e3b\u673a\u4e4b\u95f4\u8fdb\u884c\u8fc1\u79fb\u3002\u52a8\u6001\u8fc1\u79fb\u7684\u8fc7\u7a0b\u4ec5\u6709\u975e\u5e38\u77ed\u6682\u7684\u505c\u673a\u65f6\u95f4&#xff0c;\u751a\u81f3\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1&#xff0c;\u540c\u65f6KVM\u865a\u62df\u673a\u4e0a\u5df2\u7ecf\u6253\u5f00\u7684\u5e94\u7528\u8fde\u63a5\u4e0d\u4f1a\u65ad\u5f00&#xff0c;\u4f9d\u7136\u4fdd\u6301\u4e0d\u53d8\u3002KVM\u7684\u52a8\u6001\u8fc1\u79fb\u6709\u4e24\u79cd\u65b9\u5f0f&#xff1a;\u4e00\u79cd\u662f\u57fa\u4e8e\u5171\u4eab\u5b58\u50a8\u7684\u52a8\u6001\u8fc1\u79fb&#xff0c;\u53e6\u4e00\u79cd\u662f\u57fa\u4e8e\u6570\u636e\u5757\u7684\u52a8\u6001\u8fc1\u79fb\u3002<\/p>\n<ul>\n<li>\u57fa\u4e8e\u5171\u4eab\u5b58\u50a8\u7684\u52a8\u6001\u8fc1\u79fb<\/li>\n<li>\u57fa\u4e8e\u6570\u636e\u5757\u7684\u52a8\u6001\u8fc1\u79fb<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5>\u5229\u7528VNC\u5b89\u88c5KVM\u865a\u62df\u673a<\/h5>\n<p><span class=\"token comment\">#\u4f7f\u7528virt-install \u547d\u4ee4\u5b89\u88c5\u865a\u62df\u673a\u5e76\u8bbe\u7f6eVNC Viewer\u8fde\u63a5\u7aef\u53e3<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl stop firewalld<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl disable firewalld<\/span><br \/>\n<span class=\"token comment\">#\u521b\u5efa\u78c1\u76d8\u6587\u4ef6\u76ee\u5f55<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm1 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir -p \/data_kvm\/store<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-install -n test01 -r 1024 &#8211;vcpus&#061;1 &#8211;disk path&#061;\/data_kvm\/store\/test01.qcow2,size&#061;10 -w bridge:br0 &#8211;virt-type&#061;kvm &#8211;accelerate &#8211;autostart -c \/opt\/CentOS-7-x86_64-DVD-2009.iso &#8211;vnc &#8211;vncport&#061;5901 &#8211;vnclisten&#061;0.0.0.0<\/span><\/p>\n<ul>\n<li>-n&#xff1a;\u6307\u5b9a\u865a\u62df\u673a\u7684\u540d\u5b57\u3002<\/li>\n<li>-r&#xff1a;\u6307\u5b9a\u5185\u5b58\u5927\u5c0f\u3002<\/li>\n<li>\u2013vcpu&#xff1a;\u6307\u5b9a\u865a\u62df CPU \u4e2a\u6570\u3002<\/li>\n<li>\u2013disk&#xff1a;\u6307\u5b9a\u78c1\u76d8\u6587\u4ef6\u653e\u7f6e\u4f4d\u7f6e\u53ca\u5927\u5c0f\u3002<\/li>\n<li>-w&#xff1a;\u5236\u5b9a\u6240\u4f7f\u7528\u7684\u7f51\u6865\u3002<\/li>\n<li>\u2013autostart&#xff1a;\u8bbe\u7f6e\u865a\u62df\u673a\u5728\u5bbf\u4e3b\u673a\u5f00\u673a\u65f6\u542f\u52a8\u3002<\/li>\n<li>-c&#xff1a;\u6307\u5b9a\u955c\u50cf\u6587\u4ef6\u3002<\/li>\n<li>\u2013vncport&#xff1a;\u901a\u8fc7 vnc viewer \u8fde\u63a5\u7684\u7aef\u53e3\u3002<\/li>\n<li>\u2013vnclisten&#xff1a;\u901a\u8fc7 vnc<\/li>\n<li>\u2013accelerate&#xff1a;\u5f53\u5b89\u88c5qemu\u5ba2\u6237\u673a\u65f6&#xff0c;\u5982\u679c\u652f\u6301\u53ef\u7528kvm\u6216kqemu\u5185\u6838\u52a0\u901f\u80fd\u529b&#xff0c;KVM\u52a0\u901f\u5668<\/li>\n<\/ul>\n<h6>\u6253\u5f00VNC Viewer<\/h6>\n<p>\u200b \u65b0\u5efa\u4e00\u4e2a\u8fde\u63a5\u4ee5\u5b89\u88c5\u865a\u62df\u673a <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250420102554-6804cbb252b6f.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><span class=\"token comment\">#\u67e5\u770b\u662f\u5426\u5b89\u88c5\u6210\u529f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token comment\">#\u542f\u52a8\u865a\u62df\u673a<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test01<\/span><br \/>\n<span class=\"token comment\">#\u518d\u6b21\u8fde\u63a5test01\u865a\u62df\u673a&#xff0c;\u5e76\u767b\u5f55\u7cfb\u7edf<\/span><\/p>\n<h4>\u9759\u6001\u8fc1\u79fb<\/h4>\n<ul>\n<li>\u9759\u6001\u8fc1\u79fb\u9700\u8981\u5728\u865a\u62df\u673a\u5173\u95ed\u7684\u60c5\u51b5\u4e0b\u6267\u884c<\/li>\n<\/ul>\n<p><span class=\"token comment\">#\u67e5\u770btest01\u865a\u62df\u673a\u5f53\u524d\u72b6\u6001\u2018<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token comment\">#\u5982\u679c\u4e3a\u5f00\u542f\u72b6\u6001\u5219\u5173\u95ed<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh shutdown test01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all <\/span><br \/>\n<span class=\"token comment\">#\u5bfc\u51fa\u865a\u62df\u673a test01 \u7684 xml \u914d\u7f6e\u6587\u4ef6<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh dumpxml test01 &gt; test01.xml <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls<\/span><br \/>\n<span class=\"token comment\">#\u5b9a\u4f4d\u865a\u62df\u673a test01 \u7684\u78c1\u76d8\u6587\u4ef6<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh domblklist test01<\/span><br \/>\n<span class=\"token comment\">#\u62f7\u8d1d\u914d\u7f6e\u6587\u4ef6\u4e0e\u78c1\u76d8\u6587\u4ef6\u5230\u8fc1\u79fb\u4e3b\u673a\u4e0a \u5148\u5728\u8fc1\u79fb\u4e3b\u673a\u4e0a\u521b\u5efa\u76ee\u5f55<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm2 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir -p \/data_kvm\/store<\/span><br \/>\n<span class=\"token comment\">#\u5c06kvm01\u62f7\u8d1d\u5230kvm02\u4e0a<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># scp test01.xml 192.168.10.105:\/etc\/libvirt\/qemu\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># scp \/data_kvm\/store\/test01.qcow2 192.168.10.105:\/data_kvm\/store\/<\/span><\/p>\n<ul>\n<li>\n<p>\u5728kvm02\u4e0a\u914d\u7f6e\u548c\u542f\u52a8\u76ee\u6807\u865a\u62df\u673a<\/p>\n<p> <span class=\"token comment\">#\u67e5\u770b\u88ab\u8fc1\u79fb\u8fc7\u6765\u7684\u914d\u7f6e\u6587\u4ef6\u548c\u78c1\u76d8\u6587\u4ef6 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls -l \/etc\/libvirt\/qemu<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls -l \/data_kvm\/store\/<\/span><br \/>\n<span class=\"token comment\">#\u91cd\u65b0\u5b9a\u4e49\u865a\u62df\u673a test01 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh define \/etc\/libvirt\/qemu\/test01.xml <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token comment\">#\u542f\u52a8\u865a\u62df\u673a test01 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token comment\">#\u6253\u5f00\u865a\u62df\u673a\u7ba1\u7406\u5668&#xff0c;\u67e5\u770b\u865a\u62df\u673a\u7684\u8fd0\u884c<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-manager<\/span>\n <\/li>\n<\/ul>\n<h4>\u52a8\u6001\u8fc1\u79fb<\/h4>\n<ul>\n<li>\n<h6>\u57fa\u4e8e\u5171\u4eab\u5b58\u50a8\u7684\u52a8\u6001\u8fc1\u79fb<\/h6>\n<p>\u914d\u7f6eNFS\u5171\u4eab\u5b58\u50a8<\/p>\n<\/li>\n<\/ul>\n<p><span class=\"token comment\">#\u6253\u5f00\u65b0\u7684\u670d\u52a1\u5668\u914d\u7f6eNFS\u670d\u52a1<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;localhost ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl stop firewalld<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;localhost ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># setenforce 0<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;localhost ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># hostnamectl set-hostname kvmnfs<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;localhost ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># bash<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># yum -y install nfs-utils<\/span><br \/>\n<span class=\"token comment\">#\u914d\u7f6e\u5171\u4eab\u76ee\u5f55 \u521b\u5efa\u5171\u4eab\u76ee\u5f55<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir \/data <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># chown -R 777 \/data\/<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vim \/etc\/exports<\/span><br \/>\n\/data <span class=\"token number\">192.168<\/span>.10.0\/24<span class=\"token punctuation\">(<\/span>rw,sync,no_root_squash<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\">#\u542f\u52a8\u5e76\u68c0\u67e5 NFS \u670d\u52a1<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl start nfs <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl start rpcbind <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvmnfs ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># showmount -e localhost<\/span><\/p>\n<p>\u6302\u8f7dNFS\u76ee\u5f55<\/p>\n<p><span class=\"token comment\">#\u4e3b\u673a kvm01\u548ckvm02\u4e0a\u521b\u5efa kgc \u76ee\u5f55<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir \/data_kvm\/kgc<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir \/data_kvm\/kgc<\/span><br \/>\n<span class=\"token comment\">#\u6302\u8f7d\u5171\u4eab\u76ee\u5f55<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount -t nfs 192.168.10.101:\/data \/data_kvm\/kgc <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mount -t nfs 192.168.10.101:\/data \/data_kvm\/kgc <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># df<\/span><br \/>\n<span class=\"token comment\">#\u8bbe\u7f6e\u81ea\u52a8\u6302\u8f7d <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vim \/etc\/fstab<\/span><br \/>\n<span class=\"token number\">192.168<\/span>.10.101:\/data \/data_kvm\/kgc nfs defaults <span class=\"token number\">0<\/span> <span class=\"token number\">0<\/span>\u3001<\/p>\n<p>\u901a\u8fc7\u73b0\u6709\u7684\u78c1\u76d8\u6587\u4ef6\u751f\u6210\u865a\u62df\u673a<\/p>\n<p><span class=\"token comment\">#\u62f7\u8d1dqcow2\u78c1\u76d8\u6587\u4ef6<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># cp \/opt\/CentOS-7-x86_64-GenericCloud-2009.qcow2 \/data_kvm\/store\/test02.qcow2<\/span><br \/>\n<span class=\"token comment\">#\u90e8\u7f72\u865a\u62df\u673a \u8bbe\u7f6eroot\u7528\u6237\u5bc6\u7801<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-customize -a \/data_kvm\/kgc\/test02.qcow2 &#8211;root-password password:aptech<\/span><br \/>\n<span class=\"token comment\">#\u5b89\u88c5\u8be2\u4ef7<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-install <\/span><br \/>\n<span class=\"token parameter variable\">&#8211;name<\/span><span class=\"token operator\">&#061;<\/span>test02 <span class=\"token parameter variable\">-r<\/span> <span class=\"token number\">1024<\/span> <span class=\"token parameter variable\">&#8211;vcpus<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span> <span class=\"token parameter variable\">&#8211;disk<\/span> <span class=\"token assign-left variable\">device<\/span><span class=\"token operator\">&#061;<\/span>disk,bus<span class=\"token operator\">&#061;<\/span>virtio,path<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;\/data_kvm\/kgc\/test02.qcow2&#039;<\/span>,size<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10<\/span> <span class=\"token punctuation\">\\\\<\/span>-w bridge:br0 &#8211;virt-type<span class=\"token operator\">&#061;<\/span>kvm <span class=\"token parameter variable\">&#8211;boot<\/span> hd<\/p>\n<p>\u52a8\u6001\u8fc1\u79fb<\/p>\n<p><span class=\"token comment\">#\u67e5\u770b kvm01 \u548c kvm02\u4e3b\u673a\u4e0a\u865a\u62df\u673a\u7684\u8fd0\u884c\u72b6\u6001 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token comment\">#\u66f4\u6539kvm01\u6587\u4ef6<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh shutdown test02 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh edit test02<\/span><br \/>\n<span class=\"token comment\">#\u627e\u5230&lt;driver name&#061;&#039;qemu&#039; type&#061;&#039;qcow2&#039;\/&gt; \u8be5\u884c<\/span><br \/>\n<span class=\"token comment\">#\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9<\/span><br \/>\n<span class=\"token assign-left variable\">cache<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#039;none&#039;<\/span><br \/>\n<span class=\"token comment\">#\u542f\u52a8test02<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test02 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token comment\">#\u8fc1\u79fb\u865a\u62df\u5230kvm02<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh migrate &#8211;live &#8211;verbose test02 qemu&#043;ssh:\/\/192.168.10.105\/system tcp:\/\/192.168.10.105<\/span><br \/>\nmigrate &#xff1a;\u8fc1\u79fb<br \/>\n<span class=\"token parameter variable\">&#8211;verbose<\/span> &#xff1a;\u663e\u793a\u8fc1\u79fb\u7684\u8fdb\u5ea6<br \/>\n&#8211;live&#xff1a;\u5b9e\u65f6\u8fc1\u79fb<br \/>\n<span class=\"token comment\">#\u521b\u5efa\u865a\u62df\u673a test02 \u914d\u7f6e\u6587\u4ef6 <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ls -l \/etc\/libvirt\/qemu<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh dumpxml test02 &gt; \/etc\/libvirt\/qemu\/test02.xml <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># cd \/etc\/libvirt\/qemu\/ <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 qemu<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># ll<\/span><br \/>\n<span class=\"token comment\">#\u5b9a\u4e49\u865a\u62df\u673a test02 \u914d\u7f6e\u6587\u4ef6<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 qemu<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh define \/etc\/libvirt\/qemu\/test02.xml<\/span><\/p>\n<ul>\n<li>\n<h6>\u57fa\u4e8e\u6570\u636e\u5757\u7684\u52a8\u6001\u8fc1\u79fb<\/h6>\n<p>\u5728kvm01\u548ckvm02\u4e0a\u5b89\u88c5\u4f9d\u8d56\u5305&#xff0c;\u9700\u8981\u4f7f\u7528\u963f\u91cc\u7684yum\u6e90<\/p>\n<\/li>\n<\/ul>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># yum -y install centos-release-qemu-ev <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vim \/etc\/yum.repos.d\/CentOS-QEMU-EV.repo<\/span><br \/>\n<span class=\"token comment\">#\u66f4\u6539\u4ee5\u4e0b\u5185\u5bb9\u4f7f\u7528\u56fd\u5185\u7684\u6e90<\/span><br \/>\n<span class=\"token assign-left variable\">mirrorlist<\/span><span class=\"token operator\">&#061;<\/span>http:\/\/mirrorlist.centos.org\/?release<span class=\"token operator\">&#061;<\/span><span class=\"token variable\">$releasever<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token assign-left variable\">arch<\/span><span class=\"token operator\">&#061;<\/span><span class=\"token variable\">$basearch<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token assign-left variable\">repo<\/span><span class=\"token operator\">&#061;<\/span>virt-kvm-common<br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># yum -y install qemu-kvm-ev<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># reboot<\/span><\/p>\n<p>\u200b \u8fc1\u79fb\u524d\u51c6\u5907\u5de5\u4f5c<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vim \/etc\/hosts<\/span><br \/>\n<span class=\"token number\">192.168<\/span>.10.201 kvm01<br \/>\n<span class=\"token number\">192.168<\/span>.10.202 kvm02<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh shutdown test01<\/span><\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-clone -o test01 -n test03 -f \/data_kvm\/store\/test03.qcow2 <\/span><\/p>\n<p>\u200b kvm02 \u4e0a\u7684\u64cd\u4f5c<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># vim \/etc\/hosts<\/span><br \/>\n<span class=\"token number\">192.168<\/span>.10.201 kvm01<br \/>\n<span class=\"token number\">192.168<\/span>.10.202 kvm02<br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 store<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh pool-list &#8211;all<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># mkdir -p \/data_kvm\/store<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 store<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># qemu-img create -f qcow2 \/data_kvm\/store\/test03.qcow2 10G<\/span><\/p>\n<p>\u200b \u5728kvm01\u4e3b\u673a\u4e0a\u6267\u884c\u8fc1\u79fb\u64cd\u4f5c<\/p>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test03<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh migrate test03 qemu&#043;ssh:\/\/192.168.10.202\/system &#8211;live &#8211;persistent &#8211;undefinesource &#8211;copy-storage-all &#8211;verbose<\/span><br \/>\n<span class=\"token parameter variable\">&#8211;persistent<\/span> &#xff1a;\u5c06\u57df\u4fdd\u7559\u4e3a\u76ee\u6807\u4e3b\u673a\u7269\u7406\u673a\u5668\u7684\u6301\u4e45\u6027\u72b6\u6001<br \/>\n&#8211;undefinesource&#xff1a;\u5220\u9664\u6e90\u4e3b\u673a\u7269\u7406\u673a\u5668\u4e0a\u7684\u5ba2\u6237\u673a\u865a\u62df\u673a<br \/>\n&#8211;copy-storage-all &#xff1a;\u4f7f\u7528\u5168\u78c1\u76d8\u590d\u5236\u7684\u975e\u5171\u4eab\u5b58\u50a8\u8fdb\u884c\u8fc1\u79fb<br \/>\n<span class=\"token comment\">#\u9a8c\u8bc1\u662f\u5426\u8fc1\u79fb\u6210\u529f<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm01 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh list &#8211;all<\/span><\/p>\n<h3>KVM\u670d\u52a1<\/h3>\n<h4>KSM\u670d\u52a1\u4ecb\u7ecd<\/h4>\n<ul>\n<li>Linux\u5185\u6838\u7279\u6027\u79f0\u4e3aKernel Shared Memory&#xff08;\u57fa\u4e8e\u5185\u6838\u7684\u5171\u4eab\u5185\u5b58&#xff09;\u6216Kernel Samepage Merging\u3002<\/li>\n<li>KSMD\u4f5c\u4e3a\u5b88\u62a4\u8fdb\u7a0b&#xff0c;\u80fd\u591f\u5408\u5e76\u5185\u5b58\u9875\u9762\u6765\u589e\u52a0\u5e76\u53d1\u865a\u62df\u673a\u7684\u6570\u91cf\u3002KSM \u9002\u7528\u4e8e\u5bbf\u4e3b\u673a\u8fc7\u8f7d\u7684\u60c5\u51b5\u4e0b\u3002<\/li>\n<li>KSM \u901a\u8fc7\u51cf\u5c11\u6bcf\u4e2a\u865a\u62df\u673a\u5b9e\u9645\u5360\u7528\u7684\u5185\u5b58\u6570&#xff0c;\u53ef\u4ee5\u8ba9\u591a\u4e2a\u865a\u62df\u673a\u5206\u914d\u7684\u5185\u5b58\u6570\u91cf\u4e4b\u548c\u5927\u4e8e\u7269\u7406\u5185\u5b58\u6570\u91cf\u3002<\/li>\n<li>\u800c\u5bf9\u4e8e\u76f8\u540c\u7c7b\u578b\u7684\u865a\u62df\u673a&#xff0c;\u5728\u7269\u7406\u5185\u5b58\u91cf\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b&#xff0c;\u53ef\u4ee5\u5728\u4e00\u4e2a\u5bbf\u4e3b\u673a\u4e2d\u521b\u5efa\u66f4\u591a\u865a\u62df\u673a&#xff0c;\u4ece\u800c\u63d0\u9ad8\u865a\u62df\u5316\u90e8\u7f72\u7684\u5bc6\u5ea6&#xff0c;\u540c\u65f6\u4e5f\u53ef\u4ee5\u63d0\u9ad8\u7269\u7406\u8d44\u6e90\u7684\u5229\u7528\u6548\u7387\u3002<\/li>\n<\/ul>\n<h6>\u68c0\u67e5\u5f53\u524d Linux \u7cfb\u7edf\u662f\u5426\u652f\u6301 KSM<\/h6>\n<p><span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># egrep -i ksm \/boot\/config-3.10.0-1160.el7.x86_64 <\/span><br \/>\n<span class=\"token comment\">#\u770b\u5230\u8be5\u884c\u5219\u652f\u6301<\/span><br \/>\n<span class=\"token assign-left variable\">CONFIG_KSM<\/span><span class=\"token operator\">&#061;<\/span>y<\/p>\n<h6>\u914d\u7f6eKSM\u5185\u5b58\u4f18\u5316<\/h6>\n<p><span class=\"token comment\">#\u5148\u5c06\u865a\u62df\u673atest01\u514b\u9686\u51fa\u4e09\u4efd  \u514b\u9686\u524d\u5148\u5173\u95ed<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-clone -o test01 -n test02 -f \/data_kvm\/store\/test02.qcow2<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-clone -o test01 -n test03 -f \/data_kvm\/store\/test03.qcow2<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virt-clone -o test01 -n test04 -f \/data_kvm\/store\/test04.qcow2<\/span><br \/>\n<span class=\"token comment\">#\u5f00\u542f\u6240\u6709\u7684\u865a\u62df\u673a<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test01<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test02<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test03<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># virsh start test04<\/span><br \/>\n<span class=\"token comment\">#\u67e5\u770bLinux\u5bbf\u4e3b\u673a\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># free<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl start ksm <\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># systemctl start ksmtuned<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># echo 1 &gt; \/sys\/kernel\/mm\/ksm\/run<\/span><br \/>\n<span class=\"token comment\">#\u518d\u6b21\u67e5\u770bLinux\u5bbf\u4e3b\u673a\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>root&#064;kvm02 ~<span class=\"token punctuation\">]<\/span><span class=\"token comment\"># free<\/span><\/p>\n<p>tart test03 [root&#064;kvm02 ~]# virsh start test04 #\u67e5\u770bLinux\u5bbf\u4e3b\u673a\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5 [root&#064;kvm02 ~]# free [root&#064;kvm02 ~]# systemctl start ksm [root&#064;kvm02 ~]# systemctl start ksmtuned [root&#064;kvm02 ~]# echo 1 &gt; \/sys\/kernel\/mm\/ksm\/run #\u518d\u6b21\u67e5\u770bLinux\u5bbf\u4e3b\u673a\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5 [root&#064;kvm02 ~]# free<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.3k\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf11\u6b21\u3002Linux\u5185\u6838\u7279\u6027\u79f0\u4e3aKernel Shared Memory\uff08\u57fa\u4e8e\u5185\u6838\u7684\u5171\u4eab\u5185\u5b58\uff09\u6216Kernel Samepage 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