linux虚拟化OPenVZ实验配置笔记

1、linux虚拟化openvz实验配置笔记/etc/yum.repos.d rootlocalhost wget /openvz.repo -2011-11-03 09:24:52- /openvz.repo resolving . 1 connecting to |1|:80. connect. http request sent, awaiting response. 200

2、 ok length: 2205 (2.2k) tt/plain saving to: openvz.repo 100%= 2,205 -.-k/s in 0s 2011-11-03 09:24:53 (149 mb/s) - openvz.repo saved 2205/2205 然后按照你所用法的linux版本，修改openvz.repo文件。 openvz-kernel-rhel5 name=openvz rhel5-ba kernel baseurl=/kernel/brahes/rhel5-2.6.18/current/ mirror

3、list=/kernel/mirrors-rhel5-2.6.18 d=1 gpgcheck=1 gpgkey=/rpm-gpg-key-openvz no2:rootlocalhost rpm -import /rpm-gpg-key-openvz no3.rootlocalhost yum search vzkernel no4.rootlocalhost yum install ovzkernel no5.执行安装后，会发觉在grub.co

4、nf中多了一项引导： title openvz (2.6.18-274.3.1.el5.028stab094.3) root (hd0,0) kernel /vmlinuz-2.6.18-274.3.1.el5.028stab094.3 ro root=label=/ rhgb quiet selinux=0 inid /initrd-2.6.18-274.3.1.el5.028stab094.3.img vi /boot/grub/menu.t /可以设置默认引导为openvz (2.6.18-274.3.1.el5.028stab094.3) no6.安装管理工具 rootlocalhos

5、t yum install vzctl vz 三、修改参数 setting sysctl parameters vim /etc/sysctl.conf on hardware node we generally need packet forwarding enabled and proxy arp disabled net.ipv4.ip_forward = 1 xy_arp = 0 enables source route verifiion net.ipv4.conf.all.rp_filter = 1 enables the magi

6、c-sysrq key kernel.sysrq = 1 tcp explict congestion notification net.ipv4.t_ecn = 0 we do not want all our interfaces to send redirects net.ipv4.conf.default.send_redirects = 1 net.ipv4.conf.all.send_redirects = 0 net.ipv4.i_echo_ignore_broadcasts=1 net.ipv4.conf.default.forwarding=1 修改上面的文件后，执行 sys

7、ctl -p 四、配置openvz 1.vi /etc/vz/vz.conf 加入下面一行： neighbour_devs=all 2.关闭selinux vi /etc/sysconfig/selinux 3.重启计算机 不论是否修改了selinux，openvz安装后都需要重新启动，然后在grub菜单中，挑选 openvz (2.6.18-274.3.1.el5.028stab094.3) 引导。 五、用法 openvz 1.到/download/template/precreated下载os的模板文件，需要虚拟出什么类型的系统，就下载对应的模板。

8、保存到/vz/template/cache cd /vz/template/cache wget /template/precreated/contrib/centos-5-i386-default.tar.gz 2.创建vps vzctl create 101 -ostemplate centos-5-i386-default -config vps.basic vzctl create 101 -ostemplate centos-6-x86 -config vswap-256m 解释：centos-6-x86为你所下载的模板文件的名称（我

9、下载的为centos-6-x86.tar.gz）（除去末尾的.tar.gz）；vswap-256m或vps.basic 为/etc/vz/conf中配置文件名称的一部分，如下： rootlocalhost ls /etc/vz/conf/ 0.conf ve-basic.conf-sample ve-unlimited.conf-sample ve-vswap-256m.conf-sample 101.conf ve-light.conf-sample ve-vswap-1024m.conf-sample ve-vswap-512m.conf-sample vzctl 101 -onboot

10、yes -save /设置开机启动 vzctl set 101 -hostname -save /设置主机名 vzctl set 101 -ipa 01 -save /设置ip vzctl set 101 -numothersock 120 -save vzctl set 101 -nameserver 01-save vzctl start 101 vzctl enter 101 /在主机进入虚拟机 vzctl set 101 -user root:test deleting virtual private server vzctl destroy

11、 101 vps is currently mounted ( first) vzctl stop 101 stop vps . vps was stopped vps is unmounted vzctl destroy 101 destroying vps private area: /vz/private/101 vps private area was destroyed ls /etc/sysconfig/vz-scripts/101.* /etc/sysconfig/vz-scripts/101.conf.destroyed /etc/sysconfig/vz-scripts/10

12、1.mount.destroyed /etc/sysconfig/vz-s cripts/101.umount.destroyed vzctl us 101 vps 101 deleted unmounted down vzctl exec 101 /etc/init.d/sshd status sshd is stopped vzctl exec 101 /etc/init.d/sshd start starting sshd: ok vzctl exec 101 /etc/init.d/sshd status sshd (p 26187) is running. 提高 1.在创建vps时用法默认的参数（-ostemplate -config ） 修改/etc/vz/vz.conf， 用下面两行代替配置文件中相应项： def_ostemplate= centos-6-x86 /你所下载的模板文件名，除掉.tar.gz configfile= vswap-256m / /etc/vz/conf名目中，你所想用的sample文件中的一个，注重只取文件名去掉ve和conf-sample的部分。 vzctl start 101 this command starts vps 101,