Ubuntu 14.4 Installation OpenVZ

Add source

vim /etc/apt/sources.list.d/openvz.list

Write to the following content to save
If necessary, you can change the comments as appropriate ... (If you do not understand, please do not care about this line of words)

deb http://download.openvz.org/debian wheezy main# deb http://download.openvz.org/debian wheezy-test main

Update after importing key

wget http://ftp.openvz.org/debian/archive.keyapt-key add archive.keyapt update

Configuring Kernel Parameters

vim /etc/sysctl.conf

Configure these items:

# On Hardware Node we generally need# packet forwarding enabled and proxy arp disablednet.ipv4.ip_forward = 1net.ipv6.conf.default.forwarding = 1net.ipv6.conf.all.forwarding = 1net.ipv4.conf.default.proxy_arp = 0# Enables source route verificationnet.ipv4.conf.all.rp_filter = 1# Enables the magic-sysrq keykernel.sysrq = 1# We do not want all our interfaces to send redirectsnet.ipv4.conf.default.send_redirects = 1net.ipv4.conf.all.send_redirects = 0

Let the changes take effect immediately:

sysctl -p

Installation

64-bit system with this

apt install -y linux-image-openvz-amd64 vzctl vzquota ploop vzstats

32-bit system with this

apt install -y linux-image-openvz-686 vzctl vzquota ploop vzstats

Enter the OpenVZ kernel

Reboot, select "Advance options for Ubuntu" in Grub to find a line with OpenVZ (more than one, choose the first one)

Use to create and initialize a virtual machine

Creating a virtual machine requires downloading a system template that will use a lot of traffic (how painful it is to understand ~)

#创建虚拟机,编号102 参数是:虚拟机编号  --ostemplate 系统模板vzctl create 102 --ostemplate debian-7.0-x86-minimal#限制CPUvzctl set 102 --cpuunits 1000 --savevzctl set 102 --cpulimit 50 --save#限制I/Ovzctl set 102 --iolimit 5M --save#设置内存和swapvzctl set 102 --ram 512M --swap 1G --save#设置硬盘大小 参数:编号 --diskspace 软限制:硬限制 --savevzctl set 102 --diskspace 4G:5G --save#设置ipvzctl set 102 --ipadd 192.168.0.2 --save#设定dns服务器vzctl set 102 --nameserver 8.8.8.8 --nameserver 8.8.4.4 --save#设置root用户密码(需要Cgroup)vzctl set 102 --userpasswd root:passwd#主机开机时自动运行虚拟机,酌情使用vzctl set 102 --onboot yes --save

The virtual machine created can be viewed with this command:

vzlist -a

Start

vzctl restart 102

Shut down

vzctl stop 102

Delete

vzctl destroy 102

View Resource Usage

vzcalc -v 102

Network configuration

iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to x.x.x.xiptables -t nat -A PREROUTING -p tcp -m tcp --dport 10222 -j DNAT --to-destination 192.168.0.2:22

Reference articles

http://blog.topspeedsnail.com/archives/3720
https://www.ahao.me/archives/1009

Ubuntu 14.4 Installation OpenVZ