虛擬化是雲計算的基礎。簡單的說,虛擬化使得在一臺物理的服務器上能夠跑多臺虛擬機,虛擬機共享物理機的 CPU、內存、IO 硬件資源,但邏輯上虛擬機之間是相互隔離的。
物理機咱們通常稱爲宿主機(Host),宿主機上面的虛擬機稱爲客戶機(Guest)。
那麼 Host 是如何將本身的硬件資源虛擬化,並提供給 Guest 使用的呢?
這個主要是經過一個叫作 Hypervisor 的程序實現的。
根據 Hypervisor 的實現方式和所處的位置,虛擬化又分爲兩種:
全虛擬化html
全虛擬化:
Hypervisor 直接安裝在物理機上,多個虛擬機在 Hypervisor 上運行。Hypervisor 實現方式通常是一個特殊定製的 Linux 系統。Xen 和 VMWare 的 ESXi 都屬於這個類型
python
半虛擬化:
物理機上首先安裝常規的操做系統,好比 Redhat、Ubuntu 和 Windows。Hypervisor 做爲 OS 上的一個程序模塊運行,並對管理虛擬機進行管理。KVM、VirtualBox 和 VMWare Workstation 都屬於這個類型
linux
理論上講:
全虛擬化通常對硬件虛擬化功能進行了特別優化,性能上比半虛擬化要高;
半虛擬化由於基於普通的操做系統,會比較靈活,好比支持虛擬機嵌套。嵌套意味着能夠在KVM虛擬機中再運行KVM。nginx
kVM 全稱是 Kernel-Based Virtual Machine。也就是說 KVM 是基於 Linux 內核實現的。
KVM有一個內核模塊叫 kvm.ko,只用於管理虛擬 CPU 和內存。
那 IO 的虛擬化,好比存儲和網絡設備則是由 Linux 內核與Qemu來實現。
做爲一個 Hypervisor,KVM 自己只關注虛擬機調度和內存管理這兩個方面。IO 外設的任務交給 Linux 內核和 Qemu。
你們在網上看 KVM 相關文章的時候確定常常會看到 Libvirt 這個東西。
Libvirt 就是 KVM 的管理工具。
其實,Libvirt 除了能管理 KVM 這種 Hypervisor,還能管理 Xen,VirtualBox 等。
Libvirt 包含 3 個東西:後臺 daemon 程序 libvirtd、API 庫和命令行工具 virshc++
環境說明git
系統類型 | RHEL7 |
---|---|
IP | 192.168.100.100 |
部署前請確保你的CPU虛擬化功能已開啓。分爲兩種狀況:github
虛擬機開啓虛擬化步驟web
//關閉防火牆與SELINUX [root@kvm ~]# systemctl stop firewalld [root@kvm ~]# systemctl disable firewalld Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service. Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service. [root@kvm ~]# setenforce 0 [root@kvm ~]# sed -ri 's/^(SELINUX=).*/\1disabled/g' /etc/selinux/config [root@localhost ~]# reboot //配置網絡源 [root@kvm yum.repos.d]# curl -o /etc/yum.repos.d/CentOS7-Base-163.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo [root@kvm yum.repos.d]# sed -i 's/\$releasever/7/g' /etc/yum.repos.d/CentOS7-Base-163.repo [root@kvm yum.repos.d]# sed -i 's/^enabled=.*/enabled=1/g' /etc/yum.repos.d/CentOS7-Base-163.repo [root@kvm yum.repos.d]# yum -y install epel-release ……下載過程略 //下載工具包 [root@kvm ~]# yum install -y vim wget net-tools unzip zip gcc gcc-c++ ……下載過程略 //驗證CPU是否支持KVM;若是結果中有vmx(Intel)或svm(AMD)字樣,就說明CPU的支持的 [root@kvm ~]# egrep -o 'vmx|svm' /proc/cpuinfo vmx vmx //kvm安裝 [root@kvm ~]# 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 ……下載過程略 //下面操做可作可不作(本身根據狀況而定!!!) //由於虛擬機中網絡,咱們通常都是和公司的其餘服務器是同一個網段,因此咱們須要把 KVM服務器的網卡配置成橋接模式。這樣的話KVM的虛擬機就能夠經過該橋接網卡和公司內部 其餘服務器處於同一網段 //此處個人網卡是ens33,因此用br0來橋接ens33網卡 [root@kvm ~]# cd /etc/sysconfig/network-scripts/ [root@kvm network-scripts]# ls ifcfg-ens33 ifdown-isdn ifup ifup-plip ifup-tunnel ifcfg-lo ifdown-post ifup-aliases ifup-plusb .....此處內容省略 [root@kvm network-scripts]# cp ifcfg-ens33 ifcfg-br0 [root@kvm network-scripts]# cat ifcfg-br0 TYPE=Bridge DEVICE=br0 NM_CONTROLLED=no BOOTPROTO=static NAME=br0 ONBOOT=yes IPADDR=192.168.100.100 NETMASK=255.255.255.0 GATEWAY=192.168.100.2 DNS1=192.168.100.2 [root@kvm network-scripts]# cat ifcfg-ens33 TYPE=Ethernet BOOTPROTO=static NAME=ens33 DEVICE=ens33 ONBOOT=yes BRIDGE=br0 NM_CONTROLLED=no //重啓網絡 [root@kvm ~]# systemctl restart network [root@kvm ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1 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 forever 2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP qlen 1000 link/ether 00:0c:29:0f:a6:60 brd ff:ff:ff:ff:ff:ff inet6 fe80::20c:29ff:fe0f:a660/64 scope link valid_lft forever preferred_lft forever 3: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000 link/ether 00:0c:29:0f:a6:60 brd ff:ff:ff:ff:ff:ff inet 192.168.100.100/24 brd 192.168.100.255 scope global br0 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe0f:a660/64 scope link valid_lft forever preferred_lft forever 4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN qlen 1000 link/ether 52:54:00:3b:2c:6a brd ff:ff:ff:ff:ff:ff inet 192.168.206.1/24 brd 192.168.122.255 scope global virbr0 valid_lft forever preferred_lft forever 5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN qlen 1000 link/ether 52:54:00:3b:2c:6a brd ff:ff:ff:ff:ff:ff //操做今後處開始 //啓動服務 [root@kvm ~]# systemctl start libvirtd [root@kvm ~]# systemctl enable libvirtd //驗證安裝結果 [root@kvm ~]# lsmod|grep kvm kvm_intel 170086 0 kvm 566340 1 kvm_intel irqbypass 13503 1 kvm //測試並驗證安裝結果 [root@kvm ~]# virsh -c qemu:///system list Id Name State ---------------------------------------------------- [root@kvm ~]# virsh --version 4.5.0 [root@kvm ~]# virt-install --version 1.5.0 [root@kvm ~]# ln -s /usr/libexec/qemu-kvm /usr/bin/qemu-kvm [root@kvm ~]# ll /usr/bin/qemu-kvm lrwxrwxrwx 1 root root 21 Oct 18 10:57 /usr/bin/qemu-kvm -> /usr/libexec/qemu-kvm [root@kvm ~]# lsmod |grep kvm kvm_intel 170086 0 kvm 566340 1 kvm_intel irqbypass 13503 1 kvm // 查看網橋信息 [root@kvm ~]# brctl show bridge name bridge id STP enabled interfaces br0 8000.000c294c50b4 no ens33 virbr0 8000.52540060a8ea yes virbr0-nic
設置完成後執行下條命令
[```
root@wan ~]# virt-managersql
會彈出下圖:
若是出現亂碼則將語言改成英文[root@kvm ~]# LANG=endjango
![](https://s4.51cto.com/images/blog/202007/16/2b2ad8dda7afb8fe6de612eba066bd61.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)
# 建立一個新磁盤 [root@kvm ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 19G 0 part ├─rhel-root 253:0 0 17G 0 lvm / └─rhel-swap 253:1 0 2G 0 lvm [SWAP] sdb 8:16 0 20G 0 disk # 分區 所有分爲一個主分區 [root@kvm ~]# fdisk /dev/sdb 歡迎使用 fdisk (util-linux 2.23.2)。 更改將停留在內存中,直到您決定將更改寫入磁盤。 使用寫入命令前請三思。 Device does not contain a recognized partition table 使用磁盤標識符 0x3e429af0 建立新的 DOS 磁盤標籤。 命令(輸入 m 獲取幫助):n Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p): Using default response p 分區號 (1-4,默認 1): 起始 扇區 (2048-41943039,默認爲 2048): 將使用默認值 2048 Last 扇區, +扇區 or +size{K,M,G} (2048-41943039,默認爲 41943039): 將使用默認值 41943039 分區 1 已設置爲 Linux 類型,大小設爲 20 GiB 命令(輸入 m 獲取幫助):w The partition table has been altered! Calling ioctl() to re-read partition table. 正在同步磁盤。 [root@kvm ~]# partprobe # 格式化磁盤 [root@kvm ~]# mkfs.ext4 /dev/sdb1 # 建立掛載點目錄並掛載 [root@kvm ~]# mkdir /storage [root@kvm ~]# blkid |grep sdb1 /dev/sdb1: UUID="f11ae26e-c529-42d1-8f0f-21cd5a062ac4" TYPE="ext4" [root@kvm ~]# echo 'UUID="f11ae26e-c529-42d1-8f0f-21cd5a062ac4" /storage ext4 defaults 0 0' >>/etc/fstab [root@kvm ~]# mount -a [root@kvm ~]# df -Th 文件系統 類型 容量 已用 可用 已用% 掛載點 /dev/mapper/rhel-root xfs 17G 6.0G 12G 36% / devtmpfs devtmpfs 901M 0 901M 0% /dev tmpfs tmpfs 912M 0 912M 0% /dev/shm tmpfs tmpfs 912M 8.7M 903M 1% /run tmpfs tmpfs 912M 0 912M 0% /sys/fs/cgroup /dev/sda1 xfs 1014M 144M 871M 15% /boot tmpfs tmpfs 183M 0 183M 0% /run/user/0 /dev/sdb1 ext4 20G 45M 19G 1% /storage
kvm 的 web 管理界面是由 webvirtmgr 程序提供的。
//安裝依賴包 [root@kvm ~]# yum -y install git python-pip libvirt-python libxml2-python python-websockify supervisor nginx python-devel ……下載過程略 //升級pip [root@kvm ~]# pip install --upgrade pip ……過程略 //從github上下載webvirtmgr代碼 [root@kvm ~]# cd /usr/src/ [root@kvm src]# git clone git://github.com/retspen/webvirtmgr.git Cloning into 'webvirtmgr'... remote: Enumerating objects: 5730, done. remote: Total 5730 (delta 0), reused 0 (delta 0), pack-reused 5730 Receiving objects: 100% (5730/5730), 3.01 MiB | 39.00 KiB/s, done. Resolving deltas: 100% (3688/3688), done. //安裝webvirtmgr [root@kvm src]# cd webvirtmgr/ [root@kvm webvirtmgr]# pip 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) 57% |██████████████████▌ | 4.7MB 38kB/s eta 0:01:28 .....過程略 //檢查sqlite3是否安裝 [root@kvm webvirtmgr]# python Python 2.7.5 (default, May 3 2017, 07:55:04) [GCC 4.8.5 20150623 (Red Hat 4.8.5-14)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import sqlite3 >>> exit() //初始化賬號信息 [root@kvm webvirtmgr]# python 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_flavor You 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 //問你是否建立超級管理員賬號 Username (leave blank to use 'root'): //指定超級管理員賬號用戶名,默認留空爲root Email address: sean1002@126.com //設置超級管理員郵箱 Password: //設置超級管理員密碼 Password (again): //再次輸入超級管理員密碼 Superuser created successfully. Installing custom SQL ... Installing indexes ... Installed 6 object(s) from 1 fixture(s) //拷貝web網頁至指定目錄 [root@kvm ~]# mkdir /var/www [root@kvm ~]# cp -r /usr/local/src/webvirtmgr /var/www/ [root@kvm ~]# chown -R nginx.nginx /var/www/webvirtmgr/ //生成密鑰(下面選擇直接回車) [root@kvm ~]# 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:CQoZtso2M5Uo39lKvjZboncqakQ69iJt5wnjiJKZNhw root@kvm The key's randomart image is: +---[RSA 2048]----+ | o | | ..+. | |..+o . | |o+.o + . . | |+*. = . S | |+E+o . | |+*= + . | |BO+===. | |Oo=**= | +----[SHA256]-----+ //因爲這裏webvirtmgr和kvm服務部署在同一臺機器,因此這裏本地信任。若是kvm部署在其餘機器,那麼這個是它的ip [root@kvm ~]# ssh-copy-id 192.168.206.129 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" The authenticity of host '192.168.206.129 (192.168.206.129)' can't be established. ECDSA key fingerprint is SHA256:UszC1ZeHM7xw/uefVkJoXW6XgRw+Jl51tAXLjFERclE. ECDSA key fingerprint is MD5:b3:f1:02:b8:01:8e:53:a7:87:09:c0:75:24:4c:ad:88. 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 keys root@192.168.206.129's password: //輸入你的root密碼 Number of key(s) added: 1 Now try logging into the machine, with: "ssh '192.168.206.129'" and check to make sure that only the key(s) you wanted were added. //配置端口轉發 [root@kvm ~]# ssh 192.168.206.129 -L localhost:8000:localhost:8000 -L localhost:6080:localhost:60 Last login: Thu Oct 18 08:26:40 2018 from 192.168.160.36 [root@kvm ~]# ss -antl State 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 :::* //配置nginx [root@kvm ~]# vim /etc/nginx/nginx.conf ....... ....... ....... include /etc/nginx/conf.d/*.conf; //改爲下面的內容 server { listen 80; server_name localhost; root /usr/share/nginx/html; # Load configuration files for the default server block. include /etc/nginx/default.d/*.conf; ....... ....... ....... [root@kvm ~]# vim /etc/nginx/conf.d/webvirtmgr.conf //添加如下內容 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; } } //確保bind綁定的是本機的8000端口 [root@kvm ~]# vim /var/www/webvirtmgr/conf/gunicorn.conf.py ...... bind = '0.0.0.0:8000' //確保此處綁定的是本機的8000端口,這個在nginx配置中定義了,被代理的端口 backlog = 2048 ..... ..... //重啓nginx [root@kvm ~]# systemctl restart nginx [root@kvm ~]# ss -antl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 *:111 *:* LISTEN 0 128 *:80 *:* 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 :::* //設置supervisor [root@kvm ~]# vim /etc/supervisord.conf .....此處省略上面的內容,在文件最後加上如下內容 [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 autostart=true autorestart=true logfile=/var/log/supervisor/webvirtmgr.log log_stderr=true user=nginx [program:webvirtmgr-console] command=/usr/bin/python2 /var/www/webvirtmgr/console/webvirtmgr-console directory=/var/www/webvirtmgr autostart=true autorestart=true stdout_logfile=/var/log/supervisor/webvirtmgr-console.log redirect_stderr=true user=nginx //啓動supervisor並設置開機自啓 [root@kvm ~]# systemctl start supervisord [root@kvm ~]# systemctl enable supervisord Created symlink from /etc/systemd/system/multi-user.target.wants/supervisord.service to /usr/lib/systemd/system/supervisord.service. [root@kvm ~]# systemctl status supervisord ● supervisord.service - Process Monitoring and Control Daemon Loaded: loaded (/usr/lib/systemd/system/supervisord.service; enabled; vendor preset: disabled) Active: active (running) since Thu 2018-10-18 11:59:33 CST; 25s ago Main PID: 17918 (supervisord) CGroup: /system.slice/supervisord.service └─17918 /usr/bin/python /usr/bin/supervisord -c /etc/supervisord.conf Oct 18 11:59:33 kvm systemd[1]: Starting Process Monitoring and Control Daemon... Oct 18 11:59:33 kvm systemd[1]: Started Process Monitoring and Control Daemon. [root@kvm webvirtmgr]# ss -antl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 *:111 *:* LISTEN 0 128 *:80 *:* LISTEN 0 5 192.168.122.1:53 *:* LISTEN 0 128 *:22 *:* LISTEN 0 100 127.0.0.1:25 *:* LISTEN 0 128 *:8000 *:* LISTEN 0 100 *:6080 *:* LISTEN 0 128 :::111 :::* LISTEN 0 128 :::22 :::* LISTEN 0 100 ::1:25 :::* // 配置nginx用戶 [root@kvm home]# su - nginx -s /bin/bash -bash-4.2$ 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:rdbmW/YIXxAJBzPsd9q9eKHPjWtSZ5EQC5li3tkczYI nginx@localhost.localdomain The key's randomart image is: +---[RSA 2048]----+ | .=o=.+ | | o.E.=.o | | o.o *.+ .| | o.o.+.o | | S ...+ ..| | o ..o.+| | o + o.+oo| | . o =.*o+.| | o.oo*+.| +----[SHA256]-----+ -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$ ssh-copy-id root@192.168.206.129 /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 keys Warning: Permanently added '192.168.160.109' (ECDSA) to the list of known hosts. root@192.168.206.129's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'root@192.168.160.109'" and check to make sure that only the key(s) you wanted were added. -bash-4.2$ exit logout [root@kvm ~]# vim /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla [Remote libvirt SSH access] Identity=unix-user:root Action=org.libvirt.unix.manage ResultAny=yes ResultInactive=yes ResultActive=yes [root@kvm ~]# chown -R root.root /etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla [root@kvm ~]# systemctl restart nginx [root@kvm ~]# systemctl restart libvirtd
經過ip地址在瀏覽器上訪問kvm。
1. 對nginx進行配置
[root@localhost ~]# vim /etc/nginx/nginx.conf 。。。。。 。。。。。 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. 。。。。。 。。。。。 [root@localhost ~]# systemctl restart nginx
二、而後對系統參數進行設置
[root@localhost ~]# vim /etc/security/limits.conf 。。。。。 。。。。。 # End of file //添加下面內容 * soft nofile 655350 * hard nofile 655350
而後就能夠經過web對kvm進行訪問了。
- 故障現象:
在web界面完成配置,啓動時沒法啓動
解決辦法:
[root@localhost ~]# yum -y install novnc [root@localhost ~]# chmod +x /etc/rc.d/rc.local [root@localhost ~]# chmod +x /etc/rc.local [root@localhost ~]# vim /etc/rc.d/rc.local ....... ....... # that this script will be executed during boot. touch /var/lock/subsys/local //添加下面這行(ip填本機ip) nohup novnc_server 192.168.206.129:5920 & [root@localhost ~]# . /etc/rc.d/rc.local
完成後在從新啓動便可