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全球热头条丨【kvm虚拟化】centos7部署CPU虚拟化

来源:CSDN 时间:2023-02-02 10:11:58

kvm虚拟化


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文章目录

kvm虚拟化一. 虚拟化介绍1. 常见的虚拟化软件2. 介绍2.1 全虚拟化2.2 半虚拟化2.3理论上讲: 3. kvm介绍 二. centos7部署kvm1. 部署1.1 环境1.2 部署前请确保你的CPU虚拟化功能已开启。分为两种情况:1.3 关闭防火墙与SELINUX1.4 kvm安装1.5 配置网卡1.6 启动服务并验证 2. kvm web管理界面安装2.1 安装依赖包2.2 从github上下载webvirtmgr代码2.3 拷贝web网页至指定目录2.4 生成密钥2.5 配置端口转发2.6 配置nginx2.7 设置supervisor2.8 配置nginx用户 3. kvm web界面管理3.1 第一次通过web访问kvm时可能会一直访问不了,一直转圈,而命令行界面一直报错(too many open files)3.2 kvm连接管理3.3 kvm存储管理3.4 通过远程连接软件上传ISO镜像文件至存储目录/var/lib/libvirt/images/3.5 在 web 界面查看ISO镜像是否存在3.6 创建系统安装镜像3.7 kvm网络管理 4. 实例管理1. 实例(虚拟机)创建

一. 虚拟化介绍

1. 常见的虚拟化软件

vmware 面向个人,支持windows,linux,macos

VMware workstationVMware fusion

esxi面向企业,VMware企业版,装到服务器上,有客户端进行管理

kvm面向企业,底层是一个linux操作系统,有一个web界面进行管理

xen 面向桌面化,是一个直接运行在计算机硬件之上的用以替代操作系统的软件层,它能够在计算机硬件上并发的运行多个客户操作系统(Guest OS)。目前Xen支持Linux、NetBSD、FreeBSD、Solaris、 Windows和其他常用的操作系统作为客户操作系统在其管理程序上运行。

citrix 银行

virtualbox 面向个人,亦可面向服务器

hyper-v 微软,只能在Windows server上使用

2. 介绍

虚拟化是云计算的基础。简单的说,虚拟化使得在一台物理的服务器上可以跑多台虚拟机,虚拟机共享物理机的 CPU、内存、IO 硬件资源,但逻辑上虚拟机之间是相互隔离的。

物理机称为宿主机(Host),宿主机上面的虚拟机称为客户机(Guest)。

根据 Hypervisor(程序) 的实现方式和所处的位置,虚拟化又分为两种:

全虚拟化半虚拟化

2.1 全虚拟化

Hypervisor 直接安装在物理机上,多个虚拟机在 Hypervisor 上运行。Hypervisor 实现方式一般是一个特殊定制的 Linux 系统。Xen 和 VMWare 的 ESXi 都属于这个类型

2.2 半虚拟化

物理机上首先安装常规的操作系统,比如 Redhat、Ubuntu 和 Windows。Hypervisor 作为 OS 上的一个程序模块运行,并对管理虚拟机进行管理。KVM、VirtualBox 和 VMWare Workstation 都属于这个类型

2.3理论上讲:

全虚拟化一般对硬件虚拟化功能进行了特别优化,性能上比半虚拟化要高,不需要操作系统,效率上高半虚拟化因为基于普通的操作系统,会比较灵活,比如支持虚拟机嵌套。嵌套意味着可以在KVM虚拟机中再运行KVM,多层虚拟,需要资源足够

3. kvm介绍

kVM 全称是 Kernel-Based Virtual Machine。 KVM 是基于 Linux 内核实现的。kvm是管理虚拟化的软件

KVM有一个内核模块叫 kvm.ko,只用于管理虚拟 CPU 和内存。

IO 的虚拟化,比如存储和网络设备则是由 Linux 内核与Qemu来实现

作为一个 Hypervisor,KVM 本身只关注虚拟机调度和内存管理这两个方面。

IO 外设的任务交给 Linux 内核和 Qemu。

Libvirt 就是 KVM 的管理工具。

Libvirt 除了能管理 KVM 这种 Hypervisor,还能管理 Xen,VirtualBox 等。

Libvirt 包含 3 个东西:后台 daemon 程序 libvirtd(服务)、API 库和命令行工具 virsh

libvirtd是服务程序,接收和处理 API 请求;API 库使得其他人可以开发基于 Libvirt 的高级工具, virt-manager,这是图形化的 KVM 管理工具;virsh 是KVM 命令行工具

二. centos7部署kvm

1. 部署

1.1 环境

系统类型IP

CentOS Linux release 7.9192.168.232.130

1.2 部署前请确保你的CPU虚拟化功能已开启。分为两种情况:

虚拟机要关机设置CPU虚拟化物理机要在BIOS里开启CPU虚拟化

1.3 关闭防火墙与SELINUX

[root@node5 ~]# vim /etc/selinux/config [root@node5 ~]# systemctl disable --now firewalld[root@node5 ~]# getenforce Disabled[root@node5 ~]# yum -y install epel-release已加载插件:fastestmirrorLoading mirror speeds from cached hostfile匹配 epel-release-7-11.noarch 的软件包已经安装。正在检查更新。无须任何处理验证CPU是否支持KVM;如果结果中有vmx(Intel)或svm(AMD)字样,就说明CPU的支持的[root@node5 ~]# egrep -o "vmx|svm" /proc/cpuinfovmxvmxvmxvmx

1.4 kvm安装

[root@node5 ~]# yum -y install qemu-kvm qemu-kvm-tools qemu-img virt-manager libvirt libvirt-python libvirt-client virt-install virt-viewer bridge-utils libguestfs-tools

1.5 配置网卡

因为虚拟机中网络,我们一般都是和公司的其他服务器是同一个网段,所以我们需要把 \KVM服务器的网卡配置成桥接模式。这样的话KVM的虚拟机就可以通过该桥接网卡和公司内部 \其他服务器处于同一网段

[root@node5 ~]# cd /etc/sysconfig/network-scripts/[root@node5 network-scripts]# lsifcfg-ens33    ifdown-Team      ifup-postifcfg-lo       ifdown-TeamPort  ifup-pppifdown         ifdown-tunnel    ifup-routesifdown-bnep    ifup             ifup-sitifdown-eth     ifup-aliases     ifup-Teamifdown-ib      ifup-bnep        ifup-TeamPortifdown-ippp    ifup-eth         ifup-tunnelifdown-ipv6    ifup-ib          ifup-wirelessifdown-isdn    ifup-ippp        init.ipv6-globalifdown-post    ifup-ipv6        network-functionsifdown-ppp     ifup-isdn        network-functions-ipv6ifdown-routes  ifup-plipifdown-sit     ifup-plusb[root@node5 network-scripts]# cp ifcfg-ens33 ifcfg-br0[root@node5 network-scripts]# vim ifcfg-ens33 [root@node5 network-scripts]# cat ifcfg-ens33TYPE=EthernetBOOTPROTO=staticNAME=ens33DEVICE=ens33ONBOOT=yesBRIDGE=br0NM_CONTROLLED=no[root@node5 network-scripts]# vim ifcfg-br0 [root@node5 network-scripts]# cat ifcfg-br0TYPE=BridgeBOOTPROTO=staticNAME=br0DEVICE=br0ONBOOT=yesNM_CONTROLLED=noIPADDR=192.168.232.130NETMASK=255.255.255.0GATEWAY=192.168.232.2DNS1=114.114.114.114重启网络[root@node5 network-scripts]# cd[root@node5 ~]# systemctl restart network[root@node5 ~]# ip a1: lo:mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: ens33:mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000    link/ether 00:0c:29:c6:ab:3e brd ff:ff:ff:ff:ff:ff    inet6 fe80::20c:29ff:fec6:ab3e/64 scope link        valid_lft forever preferred_lft forever3: br0:mtu 1500 qdisc noqueue state UP group default qlen 1000    link/ether 00:0c:29:c6:ab:3e brd ff:ff:ff:ff:ff:ff    inet 192.168.232.130/24 brd 192.168.232.255 scope global br0       valid_lft forever preferred_lft forever    inet6 fe80::20c:29ff:fec6:ab3e/64 scope link        valid_lft forever preferred_lft forever[root@node5 ~]#

1.6 启动服务并验证

[root@node5 ~]# systemctl enable --now libvirtd[root@node5 ~]# lsmod|grep kvmkvm_intel             188740  0 kvm                   637289  1 kvm_intelirqbypass              13503  1 kvm[root@node5 ~]# virsh -c qemu:///system list Id    名称                         状态----------------------------------------------------[root@node5 ~]# [root@node5 ~]# virsh --version4.5.0[root@node5 ~]# virt-install --version1.5.0[root@node5 ~]# [root@node5 ~]# ln -s /usr/libexec/qemu-kvm /usr/bin/qemu-kvm[root@node5 ~]# ll /usr/bin/qemu-kvmlrwxrwxrwx 1 root root 21 8月  19 22:35 /usr/bin/qemu-kvm -> /usr/libexec/qemu-kvm[root@node5 ~]# 查看网桥信息[root@node5 ~]# brctl showbridge name     bridge id               STP enabled     interfacesbr0             8000.000c29c6ab3e       no              ens33virbr0          8000.525400bdf9c5       yes             virbr0-nic[root@node5 ~]# stp:生成树协议

2. kvm web管理界面安装

kvm 的 web 管理界面是由 webvirtmgr 程序提供的

2.1 安装依赖包

[root@node5 ~]# yum -y install git python-pip libvirt-python libxml2-python python-websockify supervisor nginx python-devel

2.2 从github上下载webvirtmgr代码

[root@node5 ~]# cd /usr/local/src/[root@node5 src]# git clone https://github.com/retspen/webvirtmgr.git正克隆到 "webvirtmgr"...remote: Enumerating objects: 5614, done.remote: Total 5614 (delta 0), reused 0 (delta 0), pack-reused 5614接收对象中: 100% (5614/5614), 2.97 MiB | 828.00 KiB/s, done.处理 delta 中: 100% (3606/3606), done.[root@node5 src]# lswebvirtmgr[root@node5 src]#安装webvirtmgr[root@node5 src]# cd webvirtmgr/[root@node5 webvirtmgr]# lsconf                  images       networks          setup.pyconsole               instance     README.rst        storagescreate                interfaces   requirements.txt  templatesdeploy                locale       secrets           Vagrantfiledev-requirements.txt  manage.py    serverlog         vrtManagerhostdetail            MANIFEST.in  servers           webvirtmgr[root@node5 webvirtmgr]# cat requirements.txt django==1.5.5gunicorn==19.5.0# Utility Requirements# for SECURE_KEY generationlockfile>=0.9# Uncoment for support ldap#django-auth-ldap==1.2.0[root@node5 webvirtmgr]# pip2 install -r requirements.txt Collecting django==1.5.5 (from -r requirements.txt (line 1))  Downloading https://files.pythonhosted.org/packages/38/49/93511c5d3367b6b21fc2995a0e53399721afc15e4cd6eb57be879ae13ad4/Django-1.5.5.tar.gz (8.1MB)    100% |████████████████████████████████| 8.1MB 14kB/s Collecting gunicorn==19.5.0 (from -r requirements.txt (line 2))  Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by "ReadTimeoutError("HTTPSConnectionPool(host="pypi.org", port=443): Read timed out. (read timeout=15)",)": /simple/gunicorn/  Downloading https://files.pythonhosted.org/packages/f9/4e/f4076a1a57fc1e75edc0828db365cfa9005f9f6b4a51b489ae39a91eb4be/gunicorn-19.5.0-py2.py3-none-any.whl (113kB)    100% |████████████████████████████████| 122kB 30kB/s Collecting lockfile>=0.9 (from -r requirements.txt (line 5))  Downloading https://files.pythonhosted.org/packages/c8/22/9460e311f340cb62d26a38c419b1381b8593b0bb6b5d1f056938b086d362/lockfile-0.12.2-py2.py3-none-any.whlInstalling collected packages: django, gunicorn, lockfile  Running setup.py install for django ... doneSuccessfully installed django-1.5.5 gunicorn-19.5.0 lockfile-0.12.2You are using pip version 8.1.2, however version 22.2.2 is available.You should consider upgrading via the "pip install --upgrade pip" command.[root@node5 webvirtmgr]# 检查sqlite3是否安装[root@node5 webvirtmgr]# pythonPython 2.7.5 (default, Jun 28 2022, 15:30:04) [GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux2Type "help", "copyright", "credits" or "license" for more information.>>> import sqlite3>>> exit()[root@node5 webvirtmgr]# 初始化帐号信息[root@node5 webvirtmgr]# pwd/usr/local/src/webvirtmgr[root@node5 webvirtmgr]# python manage.py syncdbWARNING:root:No local_settings file found.Creating tables ...Creating table auth_permissionCreating table auth_group_permissionsCreating table auth_groupCreating table auth_user_groupsCreating table auth_user_user_permissionsCreating table auth_userCreating table django_content_typeCreating table django_sessionCreating table django_siteCreating table servers_computeCreating table instance_instanceCreating table create_flavorYou just installed Django"s auth system, which means you don"t have any superusers defined.Would you like to create one now? (yes/no): yes//问你是否创建超级管理员帐号Username (leave blank to use "root"): Email address: 1@2.com //设置超级管理员邮箱Password: admin//设置超级管理员密码Password (again): //再次输入超级管理员密码Superuser created successfully.Installing custom SQL ...Installing indexes ...Installed 6 object(s) from 1 fixture(s)[root@node5 webvirtmgr]#

2.3 拷贝web网页至指定目录

[root@node5 webvirtmgr]# mkdir /var/www[root@node5 webvirtmgr]# cp -a /usr/local/src/webvirtmgr /var/www/[root@node5 webvirtmgr]# chown -R nginx.nginx /var/www/webvirtmgr/[root@node5 webvirtmgr]# ll /var/www总用量 4drwxr-xr-x 20 nginx nginx 4096 8月  20 10:01 webvirtmgr[root@node5 webvirtmgr]#

2.4 生成密钥

[root@node5 ~]# ssh-keygen -t rsaGenerating public/private rsa key pair.Enter file in which to save the key (/root/.ssh/id_rsa): Created directory "/root/.ssh".Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa.Your public key has been saved in /root/.ssh/id_rsa.pub.The key fingerprint is:SHA256:MWr33xMiXMGi/wJJqWDpmxm+v46FLfqokE5JfiKkTNQ root@node5The key"s randomart image is:+---[RSA 2048]----+|           .     ||  .       . o    || . E .  oo . .   ||.   +  .+o  .    || + o .ooS+ .     ||B.. o+..o.+ . .  ||=* oo=o  ..o . . ||= oo=+    .....  ||.oo.+++.   .. .. |+----[SHA256]-----+[root@node5 ~]# 由于这里webvirtmgr和kvm服务部署在同一台机器,所以这里本地信任。如果kvm部署在其他机器,那么这个是它的ip[root@node5 ~]# ssh-copy-id 192.168.232.130/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"The authenticity of host "192.168.232.130 (192.168.232.130)" can"t be established.ECDSA key fingerprint is SHA256:yI7Vw6dzG3BFR36FymKEbCEWMvFYxbAGF8uB5x8LlXc.ECDSA key fingerprint is MD5:17:9d:66:e9:d1:80:f4:c8:42:ba:78:db:03:d3:87:18.Are you sure you want to continue connecting (yes/no)? yes/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keysroot@192.168.232.130"s password: Number of key(s) added: 1Now try logging into the machine, with:   "ssh "192.168.232.130""and check to make sure that only the key(s) you wanted were added.[root@node5 ~]# ssh 192.168.232.130Last login: Sat Aug 20 10:12:30 2022 from node5[root@node5 ~]# exit登出Connection to 192.168.232.130 closed.[root@node5 ~]#

2.5 配置端口转发

[root@node5 ~]# ssh-copy-id 192.168.232.130[root@node5 ~]# ssh 192.168.232.130 -L localhost:8000:localhost:8000 -L localhost:6080:localhost:60Last login: Sat Aug 20 10:13:24 2022 from node5[root@node5 ~]# ss -antlState       Recv-Q Send-Q Local Address:Port               Peer Address:Port              LISTEN      0      128     *:111                 *:*                  LISTEN      0      5      192.168.122.1:53                  *:*                  LISTEN      0      128     *:22                  *:*                  LISTEN      0      100    127.0.0.1:25                  *:*                  LISTEN      0      128    127.0.0.1:6080                *:*                  LISTEN      0      128    127.0.0.1:8000                *:*                  LISTEN      0      128      [::]:111                  [::]:*                  LISTEN      0      128      [::]:22                   [::]:*                  LISTEN      0      100     [::1]:25                   [::]:*                  LISTEN      0      128     [::1]:6080                 [::]:*                  LISTEN      0      128     [::1]:8000                 [::]:*                  [root@node5 ~]#

2.6 配置nginx

[root@node5 ~]# vim /etc/nginx/nginx.conf[root@node5 ~]# cat /etc/nginx/nginx.confuser nginx;worker_processes auto;error_log /var/log/nginx/error.log;pid /run/nginx.pid;include /usr/share/nginx/modules/*.conf;events {    worker_connections 1024;}http {    log_format  main  "$remote_addr - $remote_user [$time_local] "$request" "                      "$status $body_bytes_sent "$http_referer" "                      ""$http_user_agent" "$http_x_forwarded_for"";    access_log  /var/log/nginx/access.log  main;    sendfile            on;    tcp_nopush          on;    tcp_nodelay         on;    keepalive_timeout   65;    types_hash_max_size 2048;    include             /etc/nginx/mime.types;    default_type        application/octet-stream;    include /etc/nginx/conf.d/*.conf;    server {        listen       80;        server_name  localhost;        include /etc/nginx/default.d/*.conf;        location / {            root html;            index index.html index.htm;        }        error_page 404 /404.html;            location = /40x.html {        }        error_page 500 502 503 504 /50x.html;            location = /50x.html {        }    }}[root@node5 ~]# [root@node5 ~]# vim /etc/nginx/conf.d/webvirtmgr.conf[root@node5 ~]# cat /etc/nginx/conf.d/webvirtmgr.confserver {    listen 80 default_server;    server_name $hostname;    #access_log /var/log/nginx/webvirtmgr_access_log;    location /static/ {        root /var/www/webvirtmgr/webvirtmgr;        expires max;    }    location / {        proxy_pass http://127.0.0.1:8000;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-for $proxy_add_x_forwarded_for;        proxy_set_header Host $host:$server_port;        proxy_set_header X-Forwarded-Proto $remote_addr;        proxy_connect_timeout 600;        proxy_read_timeout 600;        proxy_send_timeout 600;        client_max_body_size 1024M;    }}[root@node5 ~]# 确保bind绑定的是本机的8000端口[root@node5 ~]# vim /var/www/webvirtmgr/conf/gunicorn.conf.pybind = "0.0.0.0:8000"backlog = 2048重启nginx[root@node5 ~]# systemctl enable --now nginxCreated symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.[root@node5 ~]# [root@node5 ~]# systemctl restart nginx

2.7 设置supervisor

[root@node5 ~]# vim /etc/supervisord.conf在最后加入以下内容[program:webvirtmgr]command=/usr/bin/python2 /var/www/webvirtmgr/manage.py run_gunicorn -c /var/www/webvirtmgr/conf/gunicorn.conf.pydirectory=/var/www/webvirtmgrautostart=trueautorestart=truelogfile=/var/log/supervisor/webvirtmgr.loglog_stderr=trueuser=nginx[program:webvirtmgr-console]command=/usr/bin/python2 /var/www/webvirtmgr/console/webvirtmgr-consoledirectory=/var/www/webvirtmgrautostart=trueautorestart=truestdout_logfile=/var/log/supervisor/webvirtmgr-console.logredirect_stderr=trueuser=nginx启动supervisor并设置开机自启[root@node5 ~]# systemctl enable --now supervisordCreated symlink from /etc/systemd/system/multi-user.target.wants/supervisord.service to /usr/lib/systemd/system/supervisord.service.

2.8 配置nginx用户

[root@node5 ~]# su - nginx -s /bin/bash-bash-4.2$ ssh-keygen -t rsaGenerating public/private rsa key pair.Enter file in which to save the key (/var/lib/nginx/.ssh/id_rsa): Created directory "/var/lib/nginx/.ssh".Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /var/lib/nginx/.ssh/id_rsa.Your public key has been saved in /var/lib/nginx/.ssh/id_rsa.pub.The key fingerprint is:SHA256:jcPXGJ7PGc+mQMzIvmE2xZk2QVA+VvwooTc8k5DNTAQ nginx@node5The key"s randomart image is:+---[RSA 2048]----+|        E@=..    ||        oo=..    ||         +*o o   ||       o.XOX. .  ||        S.^=o    ||       . * + =   ||        * . + +  ||       o + . o   ||        .   .    |+----[SHA256]-----+-bash-4.2$ -bash-4.2$ touch ~/.ssh/config && echo -e "StrictHostKeyChecking=no\nUserKnownHostsFile=/dev/null" >> ~/.ssh/config-bash-4.2$ chmod 0600 ~/.ssh/config-bash-4.2$ cat ~/.ssh/configStrictHostKeyChecking=no  //不验证主机身份UserKnownHostsFile=/dev/null-bash-4.2$ ssh-copy-id root@192.168.232.130/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/var/lib/nginx/.ssh/id_rsa.pub"/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keysWarning: Permanently added "192.168.232.130" (ECDSA) to the list of known hosts.root@192.168.232.130"s password: Number of key(s) added: 1Now try logging into the machine, with:   "ssh "root@192.168.232.130""and check to make sure that only the key(s) you wanted were added.-bash-4.2$ exitlogout[root@node5 ~]#     [root@node5 ~]# vim /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla[root@node5 ~]# cat /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla    [Remote libvirt SSH access]Identity=unix-user:rootAction=org.libvirt.unix.manageResultAny=yesResultInactive=yesResultActive=yes    [root@node5 ~]# systemctl restart nginx libvirtd[root@node5 ~]# ll /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla-rw-r--r-- 1 root root 133 8月  20 10:34 /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla[root@node5 ~]#

3. kvm web界面管理

访问出现too many open files

3.1 第一次通过web访问kvm时可能会一直访问不了,一直转圈,而命令行界面一直报错(too many open files)

需要对nginx进行配置

[root@node5 ~]# vim /etc/nginx/nginx.conf....此处省略N行user nginx;worker_processes auto;error_log /var/log/nginx/error.log;pid /run/nginx.pid;worker_rlimit_nofile 655350;    //添加此行配置# Load dynamic modules. See /usr/share/nginx/README.dynamic.....此处省略N行[root@node5 ~]# systemctl restart nginx

对系统参数进行设置

[root@node5 ~]# vim /etc/security/limits.conf[root@node5 ~]# tail -3 /etc/security/limits.conf# End of file* soft nofile 655350* hard nofile 655350[root@node5 ~]#

再次访问

3.2 kvm连接管理

创建SSH连接:

3.3 kvm存储管理

创建存储进入存储:

3.4 通过远程连接软件上传ISO镜像文件至存储目录/var/lib/libvirt/images/

[root@node5 ~]# cd /var/lib/libvirt/images/[root@node5 images]# ls[root@node5 images]# lsCentOS-Stream-8-x86_64-20220223-dvd1.iso[root@node5 images]#

3.5 在 web 界面查看ISO镜像是否存在

3.6 创建系统安装镜像

添加镜像 查看

3.7 kvm网络管理

添加桥接网络

4. 实例管理

1. 实例(虚拟机)创建

创建虚拟机 定制虚拟机 创建虚拟机 虚拟机插入光盘设置在 web 上访问虚拟机的密码启动虚拟机

安装虚拟机

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