弄一个网站,微商水印相机做网站,中国最新军事动态视频,seo怎么快速提高排名kvm虚拟化 1. 虚拟化介绍
虚拟化是云计算的基础。简单的说#xff0c;虚拟化使得在一台物理的服务器上可以跑多台虚拟机#xff0c;虚拟机共享物理机的 CPU、内存、IO 硬件资源#xff0c;但逻辑上虚拟机之间是相互隔离的。
物理机我们一般称为宿主机#xff08;Host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。
物理机我们一般称为宿主机Host宿主机上面的虚拟机称为客户机Guest。
那么 Host 是如何将自己的硬件资源虚拟化并提供给 Guest 使用的呢 这个主要是通过一个叫做 Hypervisor 的程序实现的。
根据 Hypervisor 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
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
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
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 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。
2. kvm介绍
kVM 全称是 Kernel-Based Virtual Machine。也就是说 KVM 是基于 Linux 内核实现的。 KVM有一个内核模块叫 kvm.ko只用于管理虚拟 CPU 和内存。
那 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 HypervisorKVM 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。
大家在网上看 KVM 相关文章的时候肯定经常会看到 Libvirt 这个东西。
Libvirt 就是 KVM 的管理工具。
其实Libvirt 除了能管理 KVM 这种 Hypervisor还能管理 XenVirtualBox 等。
Libvirt 包含 3 个东西后台 daemon 程序 libvirtd、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 的高级工具比如 virt-manager这是个图形化的 KVM 管理工具virsh 是我们经常要用的 KVM 命令行工具
3. kvm部署
环境说明
系统类型IP统信uso192.168.159.148
3.1 kvm安装
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
关闭防火墙与SELINUX
[rootcjy ~]# systemctl disable --now firewalld
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[rootcjy ~]# getenforce
Disabled[rootkvm ~]# yum -y install vim wget net-tools unzip zip gcc gcc-c
安装过程略.....验证CPU是否支持KVM如果结果中有vmxIntel或svm(AMD)字样就说明CPU的支持的
[rootcjy ~]# egrep -o vmx|svm /proc/cpuinfo
vmx
vmx
vmx
vmxkvm安装
[rootkvm ~]# yum -y install qemu-kvm qemu-img virt-manager libvirt libvirt-python libvirt-client virt-install virt-viewer bridge-utils libguestfs-tools
安装过程略......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
此处我的网卡是ens33所以用br0来桥接ens33网卡
[rootcjy ~]# cd /etc/sysconfig/network-scripts/
[rootcjy network-scripts]# ls
ifcfg-ens33
[rootcjy network-scripts]# cp ifcfg-ens33 ifcfg-br0
[rootcjy network-scripts]# vim ifcfg-br0
[rootcjy network-scripts]# cat ifcfg-br0
TYPEBridge
BOOTPROTOstatic
NAMEbr0
DEVICEbr0
ONBOOTyes
IPADDR192.168.159.148
NETMASK255.255.255.0
GATEWAY192.168.159.2
DNS1114.114.114.114
[rootcjy network-scripts]# ls
ifcfg-br0 ifcfg-ens33
[rootcjy network-scripts]# vim ifcfg-ens33
[rootcjy network-scripts]# cat ifcfg-ens33
TYPEEthernet
BOOTPROTOnone
NAMEens33
DEVICEens33
ONBOOTyes
BRIDGEbr0重启网络
[rootcjy ~]# systemctl restart NetworkManager
[rootcjy ~]# ip a
1: lo: LOOPBACK,UP,LOWER_UP mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc fq_codel state UP group default qlen 1000link/ether 00:0c:29:b2:5e:a1 brd ff:ff:ff:ff:ff:ffinet 192.168.159.148/24 brd 192.168.159.255 scope global dynamic noprefixroute ens33valid_lft 1657sec preferred_lft 1657secinet6 fe80::eaae:23f9:fc13:fe82/64 scope link noprefixroute valid_lft forever preferred_lft forever
3: br0: NO-CARRIER,BROADCAST,MULTICAST,UP mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether ae:2e:12:c4:43:d2 brd ff:ff:ff:ff:ff:ffinet 192.168.159.148/24 brd 192.168.159.255 scope global noprefixroute br0valid_lft forever preferred_lft forever下载ifdown去刷新网卡
[rootlocalhost ~]# yum provides *bin/ifdown
[rootlocalhost ~]# ifdouwn ens33;ifup ens33启动服务
[rootcjy ~]# systemctl enable --now libvirtd
Created symlink /etc/systemd/system/multi-user.target.wants/libvirtd.service → /usr/lib/systemd/system/libvirtd.service.
Created symlink /etc/systemd/system/sockets.target.wants/virtlockd.socket → /usr/lib/systemd/system/virtlockd.socket.
Created symlink /etc/systemd/system/sockets.target.wants/libvirtd.socket → /usr/lib/systemd/system/libvirtd.socket.
Created symlink /etc/systemd/system/sockets.target.wants/libvirtd-ro.socket → /usr/lib/systemd/system/libvirtd-ro.socket.验证安装结果
[rootcjy ~]# lsmod|grep kvm
kvm_intel 241664 0
kvm 774144 1 kvm_intel
irqbypass 20480 1 kvm测试并验证安装结果
[rootcjy ~]# virsh -c qemu:///system listId 名称 状态
-------------------[rootcjy ~]# virsh --version
8.0.0
[rootcjy ~]# virt-install --version
4.1.0
[rootcjy ~]# ln -s /usr/libexec/qemu-kvm /usr/bin/
[rootcjy ~]# which qemu-kvm
/usr/bin/qemu-kvm查看网桥信息
[rootcjy ~]# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.000c29b25ea1 no ens33
virbr0 8000.525400705702 yes
3.2 kvm web管理界面安装
kvm 的 web 管理界面是由 webvirtmgr 程序提供的。
安装依赖包
没有的需要去pkg.org里面找
[rootkvm ~]# yum -y install git python2-pip libvirt-python libxml2-python python-websockify supervisor nginx python2-devel从github上下载webvirtmgr代码
[rootcjy ~]# cd /usr/local/src/
[rootcjy src]# ls
[rootcjy 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 | 170.00 KiB/s, 完成.
处理 delta 中: 100% (3606/3606), 完成.
[rootcjy src]# ls
webvirtmgr
[rootcjy src]# cd webvirtmgr/
[rootcjy webvirtmgr]# ls
conf dev-requirements.txt interfaces networks serverlog templates
console hostdetail locale README.rst servers Vagrantfile
create images manage.py requirements.txt setup.py vrtManager
deploy instance MANIFEST.in secrets storages webvirtmgr安装webvirtmgr
[rootcjy webvirtmgr]# git clone https://github.com/retspen/webvirtmgr.git
[rootcjy webvirtmgr]# pip2 install -r requirements.txt
WARNING: Running pip install with root privileges is generally not a good idea. Try pip2 install --user instead.
Collecting django1.5.5 (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 136kB/s
Collecting gunicorn19.5.0 (from -r requirements.txt (line 2))Downloading https://files.pythonhosted.org/packages/f9/4e/f4076a1a57fc1e75edc0828db365cfa9005f9f6b4a51b489ae39a91eb4be/gunicorn-19.5.0-py2.py3-none-any.whl (113kB)100% |████████████████████████████████| 122kB 3.2MB/s
Collecting lockfile0.9 (from -r requirements.txt (line 5))Downloading https://files.pythonhosted.org/packages/c8/22/9460e311f340cb62d26a38c419b1381b8593b0bb6b5d1f056938b086d362/lockfile-0.12.2-py2.py3-none-any.whl
Installing collected packages: django, gunicorn, lockfileRunning setup.py install for django ... done
Successfully installed django-1.5.5 gunicorn-19.5.0 lockfile-0.12.2检查sqlite3是否安装
[rootcjy webvirtmgr]# python2
Python 2.7.18 (default, Jul 5 2023, 16:00:44)
[GCC 8.5.0 20210514 (UnionTech 8.5.0-10.0.3)] on linux2
Type help, copyright, credits or license for more information.import sqlite3exit()初始化帐号信息
[rootcjy webvirtmgr]# ls
conf dev-requirements.txt interfaces networks serverlog templates
console hostdetail locale README.rst servers Vagrantfile
create images manage.py requirements.txt setup.py vrtManager
deploy instance MANIFEST.in secrets storages webvirtmgr
[rootcjy webvirtmgr]# python2 manage.py syncdb
WARNING:root:No local_settings file found.
Creating tables ...
Creating table auth_permission
Creating table auth_group_permissions
Creating table auth_group
Creating table auth_user_groups
Creating table auth_user_user_permissions
Creating table auth_user
Creating table django_content_type
Creating table django_session
Creating table django_site
Creating table servers_compute
Creating table instance_instance
Creating table create_flavorYou just installed Djangos auth system, which means you dont 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): admin 指定超级管理员帐号用户名默认留空为root
Email address: 12.com 设置超级管理员邮箱
Password: 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)拷贝web网页至指定目录
[rootcjy webvirtmgr]# mkdir -p /var/www
[rootcjy webvirtmgr]# cd ..
[rootcjy src]# ls
webvirtmgr
[rootcjy src]# pwd
/usr/local/src
[rootcjy src]# cp -a /usr/local/src/webvirtmgr /var/www/
[rootcjy src]# ll /var/www/
总用量 4
drwxr-xr-x 20 root root 4096 12月 18 17:34 webvirtmgr
[rootcjy src]# chown -R nginx.nginx /var/www/webvirtmgr/
[rootcjy src]# ll /var/www/
总用量 4
drwxr-xr-x 20 nginx nginx 4096 12月 18 17:34 webvirtmgr生成密钥
[rootcjy ~]# ssh-keygen -t rsa
Generating 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:
SHA256:9Dlg9j5T/dpwcgRvDd1Z5wbreO2DUDfZuG65FLdsZA rootcjy
The keys randomart image is:
---[RSA 3072]----
| |
| |
| . o. |
| o E.*|
| S o *^|
| . o o.#O|
| .o*.*|
| o.o |
| ..o|
----[SHA256]-----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
[rootcjy ~]# ssh-copy-id root192.168.159.148
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: /root/.ssh/id_rsa.pub
The authenticity of host 192.168.159.148 (192.168.159.148) cant be established.
ECDSA key fingerprint is SHA256:b1SnazMwrEXGaRCuAg1GzSrIZiInVn0mYPH2dm4Y/Y.
Are you sure you want to continue connecting (yes/no/[fingerprint])? 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 keys
UOS Server 20 1060a
root192.168.159.148s password: Number of key(s) added: 1Now try logging into the machine, with: ssh root192.168.159.148
and check to make sure that only the key(s) you wanted were added.配置端口转发
[rootcjy ~]# ssh 192.168.159.148 -L localhost:8000:localhost:8000 -L localhost:6080:localhost:60
UOS Server 20 1060a
Welcome to UOS Server 20Last login: Mon Dec 18 17:39:11 2023 from 192.168.159.148
Welcome to 4.19.0-91.82.152.uelc20.x86_64[rootcjy ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:111 0.0.0.0:*
LISTEN 0 32 192.168.122.1:53 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 5 127.0.0.1:631 0.0.0.0:*
LISTEN 0 128 127.0.0.1:6080 0.0.0.0:*
LISTEN 0 128 127.0.0.1:8000 0.0.0.0:*
LISTEN 0 128 [::]:111 [::]:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 5 [::1]:631 [::]:*
LISTEN 0 128 [::1]:6080 [::]:*
LISTEN 0 128 [::1]:8000 [::]:* 配置nginx
[rootcjy ~]# cd /etc/nginx/
[rootcjy nginx]# ls
conf.d fastcgi_params.default nginx.conf uwsgi_params.default
default.d koi-utf nginx.conf.default win-utf
fastcgi.conf koi-win scgi_params
fastcgi.conf.default mime.types scgi_params.default
fastcgi_params mime.types.default uwsgi_params
[rootcjy nginx]# mv nginx.conf /opt/
[rootcjy nginx]# vim nginx.conf
[rootcjy nginx]# vim /etc/nginx/conf.d/webvirtmgr.conf
[rootcjy nginx]# cat nginx.conf
user 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 {}}
}
[rootcjy nginx]# cat /etc/nginx/conf.d/webvirtmgr.conf
server {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;}
}确保bind绑定的是本机的8000端口
[rootcjy ~]# vim /var/www/webvirtmgr/conf/gunicorn.conf.py
.....此处省略N行
bind 0.0.0.0:8000 确保此处绑定的是本机的8000端口这个在nginx配置中定义了被代理的端口
backlog 2048
.....此处省略N行重启nginx
[rootcjy nginx]# systemctl enable --now nginx
Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service → /usr/lib/systemd/system/nginx.service.
[rootcjy nginx]# systemctl status nginx
● nginx.service - The nginx HTTP and reverse proxy serverLoaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)Active: active (running) since Mon 2023-12-18 17:59:28 CST; 13s agoProcess: 10101 ExecStartPre/usr/bin/rm -f /run/nginx.pid (codeexited, status0/SUCCESS)Process: 10103 ExecStartPre/usr/sbin/nginx -t (codeexited, status0/SUCCESS)Process: 10106 ExecStart/usr/sbin/nginx (codeexited, status0/SUCCESS)Main PID: 10107 (nginx)Tasks: 5Memory: 9.3MCGroup: /system.slice/nginx.service├─10107 nginx: master process /usr/sbin/nginx├─10108 nginx: worker process├─10109 nginx: worker process├─10110 nginx: worker process└─10111 nginx: worker process12月 18 17:59:28 cjy systemd[1]: Starting The nginx HTTP and reverse proxy server...
12月 18 17:59:28 cjy nginx[10103]: nginx: the configuration file /etc/nginx/nginx.conf syn
12月 18 17:59:28 cjy nginx[10103]: nginx: configuration file /etc/nginx/nginx.conf test is
12月 18 17:59:28 cjy systemd[1]: Started The nginx HTTP and reverse proxy server.设置supervisor
[rootcjy ~]# vim /etc/supervisord.conf
.....此处省略上面的内容在文件最后加上以下内容
[program:webvirtmgr]
command/usr/bin/python2 /var/www/webvirtmgr/manage.py run_gunicorn -c /var/www/webvirtmgr/conf/gunicorn.conf.py
directory/var/www/webvirtmgr
autostarttrue
autorestarttrue
logfile/var/log/supervisor/webvirtmgr.log
log_stderrtrue
usernginx[program:webvirtmgr-console]
command/usr/bin/python2 /var/www/webvirtmgr/console/webvirtmgr-console
directory/var/www/webvirtmgr
autostarttrue
autorestarttrue
stdout_logfile/var/log/supervisor/webvirtmgr-console.log
redirect_stderrtrue
usernginx启动supervisor并设置开机自启
[rootcjy nginx]# vim /etc/supervisord.conf
[rootcjy nginx]# systemctl enable --now supervisord
Created symlink /etc/systemd/system/multi-user.target.wants/supervisord.service → /usr/lib/systemd/system/supervisord.service.
[rootcjy nginx]# systemctl status supervisord
● supervisord.service - Process Monitoring and Control DaemonLoaded: loaded (/usr/lib/systemd/system/supervisord.service; enabled; vendor preset: diActive: active (running) since Mon 2023-12-18 18:01:38 CST; 15s agoProcess: 10155 ExecStart/usr/bin/supervisord -c /etc/supervisord.conf (codeexited, staMain PID: 10158 (supervisord)Tasks: 2Memory: 37.3MCGroup: /system.slice/supervisord.service├─10158 /usr/libexec/platform-python /usr/bin/supervisord -c /etc/supervisord.c└─10176 /usr/bin/python2 /var/www/webvirtmgr/manage.py run_gunicorn -c /var/www12月 18 18:01:38 cjy systemd[1]: Starting Process Monitoring and Control Daemon...
12月 18 18:01:38 cjy systemd[1]: Started Process Monitoring and Control Daemon.
[rootcjy nginx]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:111 0.0.0.0:*
LISTEN 0 511 0.0.0.0:80 0.0.0.0:*
LISTEN 0 32 192.168.122.1:53 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 5 127.0.0.1:631 0.0.0.0:*
LISTEN 0 128 127.0.0.1:6080 0.0.0.0:*
LISTEN 0 128 127.0.0.1:8000 0.0.0.0:*
LISTEN 0 128 [::]:111 [::]:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 5 [::1]:631 [::]:*
LISTEN 0 128 [::1]:6080 [::]:*
LISTEN 0 128 [::1]:8000 [::]:* 配置nginx用户
[rootcjy ~]# su - nginx -s /bin/bash
Welcome to 4.19.0-91.82.152.uelc20.x86_64[nginxcjy ~]$ pwd
/var/lib/nginx
[nginxcjy ~]$ ssh-keygen -t rsa
Generating 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:DvI7BZ3oIPOeF/CqfHElFZi6pVBmVXKPb7vqQP7kYM nginxcjy
The keys randomart image is:
---[RSA 3072]----
| oo. |
| . . |
| . |
| o o..o . |
| .S . |
| oo. o |
| ..oEo |
| . ..o.. . . |
| oo.... .o |
----[SHA256]-----[nginxcjy ~]$ touch ~/.ssh/config echo -e StrictHostKeyCheckingno\nUserKnownHostsFile/dev/null ~/.ssh/config
[nginxcjy ~]$ cat ~/.ssh/config
StrictHostKeyCheckingno
UserKnownHostsFile/dev/null
[nginxcjy ~]$ chmod 600 ~/.ssh/config
[nginxcjy ~]$ ll ~/.ssh/config
-rw------- 1 nginx nginx 54 12月 18 18:04 /var/lib/nginx/.ssh/config
[nginxcjy ~]$ ssh-copy-id root192.168.159.148
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: /var/lib/nginx/.ssh/id_rsa.pub
/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 keys
Warning: Permanently added 192.168.159.148 (ECDSA) to the list of known hosts.
UOS Server 20 1060a
root192.168.159.148s password: Number of key(s) added: 1Now try logging into the machine, with: ssh root192.168.159.148
and check to make sure that only the key(s) you wanted were added.[nginxcjy ~]$ ssh root192.168.159.148
Warning: Permanently added 192.168.159.148 (ECDSA) to the list of known hosts.
UOS Server 20 1060a
Welcome to UOS Server 20Last login: Mon Dec 18 17:41:29 2023 from 192.168.159.148
Welcome to 4.19.0-91.82.152.uelc20.x86_64[rootcjy ~]# exit
注销
Connection to 192.168.159.148 closed.[rootcjy ~]# vim /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
[Remote libvirt SSH access]
Identityunix-user:root
Actionorg.libvirt.unix.manage
ResultAnyyes
ResultInactiveyes
ResultActiveyes[rootcjy ~]# ll /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
-rw-r--r-- 1 root root 133 12月 18 18:08 /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla[rootcjy ~]# systemctl restart nginx
[rootcjy ~]# systemctl restart libvirtd3.3 kvm web界面管理
通过ip地址在浏览器上访问kvm例如我这里就是http://192.168.159.148
3.3.1 kvm连接管理
创建SSH连接 3.3.2 kvm存储管理
创建存储
添加镜像 创建一个网卡 创建一台虚拟机
连接完镜像后开机然后安装
再另一台虚拟机上创建一台vm
然后在平台上连接到创建vm 通过远程连接软件上传ISO镜像文件至存储目录/var/lib/libvirt/images/
[rootkvm ~]# cd /var/lib/libvirt/images/
[rootkvm images]# ls
[rootkvm images]#Upload SCP
CentOS-7-x86_64-DVD-1804.iso (4263.00 MB, 8:45 min 8.12 MB/sec)[rootkvm images]# ls
CentOS-7-x86_64-DVD-1804.iso4.故障案例
4.1 案例1
web界面配置完成后可能会出现以下错误界面 解决方法是安装novnc并通过novnc_server启动一个vnc
[rootlocalhost ~]# ll /etc/rc.local
lrwxrwxrwx. 1 root root 13 Aug 6 2018 /etc/rc.local - rc.d/rc.local
[rootlocalhost ~]# ll /etc/rc.d/rc.local
-rw-r--r-- 1 root root 513 Mar 11 22:35 /etc/rc.d/rc.local
[rootlocalhost ~]# chmod x /etc/rc.d/rc.local
[rootlocalhost ~]# ll /etc/rc.d/rc.local
-rwxr-xr-x 1 root root 513 Mar 11 22:35 /etc/rc.d/rc.local[rootlocalhost ~]# vim /etc/rc.d/rc.local
......此处省略N行
# that this script will be executed during boot.touch /var/lock/subsys/local
nohup novnc_server 172.16.12.128:5920 [rootlocalhost ~]# . /etc/rc.d/rc.local做完以上操作后再次访问即可正常访问
4.2 案例2
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)
此时需要对nginx进行配置
[rootlocalhost ~]# 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[rootlocalhost ~]# systemctl restart nginx然后对系统参数进行设置
[rootlocalhost ~]# vim /etc/security/limits.conf
....此处省略N行
# End of file
* soft nofile 655350
* hard nofile 655350到此问题即可解决
