运维kvm-阿里云

运维工程师面试题总结-虚拟化技术与KVM企业级应用14

1. 为什么要用虚拟化充分利用物理资源，提供冗余性、向云计算演进的必要基础。2. CPU虚拟化CPU的虚拟化本质上是时间分片。这里我们用的是KVM来虚拟的。流程如下： QEMU调用ioctl进入内核，内核读取VMCS，（这里先解释下VMCS，VMCS是异常处理的关键结构，里面存储了客户机ÿ...

【运维】KVM 虚拟机迁移

静态迁移：：也叫做常规迁移、离线迁移（Offline Migration）。就是在虚拟机关机或暂停的情况下从一台物理机迁移到另一台物理机。因为虚拟机的文件系统建立在虚拟机镜像上面，所以在虚拟机关机的情况下，只需要简单的迁移虚拟机镜像和相应的配置文件到另外一台物理主机上；如果需要保存虚拟机迁移之前的状...

存储的降本增效与运维

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企业运维训练营之云上监控运维最佳实践课程

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企业运维训练营之大数据EMR原理与实践

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【运维】KVM virsh命令

virsh分别有两种模式，命令模式和交互模式，输入virsh进入交互模式，在virsh后跟命令参数即命令模式一、虚拟机管理1.list 列出虚拟机--all列出所有状态虚拟机 2.start启动虚拟机start启动虚拟机--console进入控制台 3.shutdown/dest...

【运维】KVM virt-install命令

virt-install命令既可以交互运行，也可以以自动的方式创建与部署虚拟机系统使用virt-install --help或者man virt-install查找参数帮助文档运行命令最少需要指定名称、内存、磁盘、安装方法重要参数有以下：1...

【运维】KVM qemu-img命令

KVM虚拟机默认使用RAW格式的img镜像文件，性能最好速度最快。但是不支持新的磁盘功能使用QCOW2格式，支持镜像，zlib磁盘压缩，AES加密等功能命令qemu-img info 查看镜像格式 qemu-img create 创建镜像文件...

【运维】KVM qemu-kvm命令

qemu-kvm和virt命令相比，qemu-kvm更加接近底层系统。安装qemu-kvm,因为红帽希望大家使用他们推崇的libvirt。基于libvirt的工具如virt-manager和virt-install 提供了非常便捷的虚拟机管理接口，但他们事实上经二次开发后又封装了qemu-...

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更新时间 2024-03-03 11:12:42

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