Install Kernel for OpenVZ

[root@ns yum.repos.d]#wget http://download.openvz.org/openvz.repo
[root@ns yum.repos.d]#cd
[root@ns ~]#yum -y install ovzkernel
Loading «installonlyn» plugin
Loading «fastestmirror» plugin
Setting up Install Process
Setting up repositories
openvz-kernel-rhel5 100% |===================| 951 B 00:00
openvz-utils 100% |===================| 951 B 00:00

Loading mirror speeds from cached hostfile
Reading repository metadata in from local files
primary.xml.gz 100% |=========================| 31 kB 00:00
openvz-ker : ####################################### 14/14

Added 14 new packages, deleted 0 old in 0.26 seconds
primary.xml.gz 100% |=========================| 5.3 kB 00:00

openvz-uti : ####################################### 21/21

Added 21 new packages, deleted 0 old in 0.13 seconds
Parsing package install arguments
Resolving Dependencies
–> Populating transaction set with selected packages. Please wait.
—> Downloading header for ovzkernel to pack into transaction set.
ovzkernel-2.6.18-8.el5.02 100% |====================| 255 kB 00:00
—> Package Package ovzkernel.i686 0:2.6.18-8.el5.028stab031.1 set to be installed
–> Running transaction check

Dependencies Resolved

========================================================
Package Arch Version Repository Size

========================================================
Installing:
ovzkernel i686 2.6.18-8.el5. 028stab031.1 openvz-kernel-rhel5 15 M

Transaction Summary
========================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)

Total download size: 15 M
Downloading Packages:
(1/1): ovzkernel-2.6.18-8 100% |====================| 15 MB 00:38

Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: ovzkernel ################################## [1/1]

Installed: ovzkernel.i686 0:2.6.18-8.el5.028stab031.1
Complete!
[root@ns ~]#
[root@ns ~]# vi /etc/sysctl.conf

# ir a la linea 7: cambiar
net.ipv4.ip_forward = 1

# ir a la linea 16: cambiar
kernel.sysrq = 1

# añadir
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.all.send_redirects = 0

[root@ns ~]# vi /boot/grub/grub.conf

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/Host/LogVol01
# initrd /initrd-version.img
# boot=/dev/sda
# cambiar el default kernel
default= 0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-8.el5.028stab031.1)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.el5.028stab031.1 ro root=/dev/VZ/Host00 console=tty0
initrd /initrd-2.6.18-8.el5.028stab031.1.img
title CentOS (2.6.18-8.1.4.el5xen)
root (hd0,0)
kernel /xen.gz-2.6.18-8.1.4.el5 dom0_mem=512M
module /vmlinuz-2.6.18-8.1.4.el5xen ro root=/dev/Xen/Host00
module /initrd-2.6.18-8.1.4.el5xen.img
title CentOS (2.6.18-8.1.1.el5)

kernel /vmlinuz-2.6.18-8.1.1.el5 ro root=/dev/Xen/Host00
initrd /initrd-2.6.18-8.1.1.el5.img
title CentOS (2.6.18-8.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.el5 ro root=/dev/Xen/Host00
initrd /initrd-2.6.18-8.el5.img

[root@ns ~]# shutdown -r now

[root@ns ~]# uname -r
2.6.18-8.el5.028stab031.1

Usando templates de OpenVZ
[root@ns ~]#cd /vz/template/cache
[root@ns ~]#wget http://download.openvz.org/template/precreated/contrib/centos-5-i386-default.tar.gz
[root@ns ~]#vzctl create 101 –ostemplate centos-5-i386-default –config vps.basic #new VM
[root@ns ~]#vzctl set 101 –onboot yes –save #auto boot
[root@ns ~]#vzctl set 101 –hostname test.example.linux –save #set hostname
[root@ns ~]#vzctl set 101 –ipadd 192.168.0.101 –save #set IP
[root@ns ~]#vzctl set 101 –numothersock 120 –save #set sockets
[root@ns ~]#vzctl set 101 –nameserver 200.14.241.36 –nameserver 200.14.241.38 #set DNS
[root@ns ~]#vzctl set 101 –diskspace 30G:30G –cpuunits 33000 –save #set disk
[root@ns ~]#vzctl set 101 –cpuunits 33000 –save #set cpu
[root@ns ~]#vzctl start 101 #booting VM
[root@ns ~]#vzctl exec 101 passwd #set passwd root