Erinevus lehekülje "OpenVZ" redaktsioonide vahel
(→Sissejuhatus) |
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| 7. rida: | 7. rida: | ||
Operating system-level virtualization | Operating system-level virtualization | ||
| − | + | virtualizing a physical server at the operating system level, enabling multiple isolated and secure virtualized servers to run on a single physical server. The "guest" OS environments share the same OS as the host system – i.e. the same OS kernel is used to implement the "guest" environments. Applications running in a given "guest" environment view it as a stand-alone system. Examples are Linux-VServer, Virtuozzo (for Windows or Linux), OpenVZ, Solaris Containers, and FreeBSD Jails. | |
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===Install=== | ===Install=== | ||
Redaktsioon: 5. jaanuar 2008, kell 01:58
Sissejuhatus
XEN tehnoloogia pole alati sobiv eriti kui pole soovi kasutada erinevaid operatsoonisüstemee vaid sama os põhiseid eraldatud masinaid. OpenVZ ideaalne lahendus.
Operating system-level virtualization
virtualizing a physical server at the operating system level, enabling multiple isolated and secure virtualized servers to run on a single physical server. The "guest" OS environments share the same OS as the host system – i.e. the same OS kernel is used to implement the "guest" environments. Applications running in a given "guest" environment view it as a stand-alone system. Examples are Linux-VServer, Virtuozzo (for Windows or Linux), OpenVZ, Solaris Containers, and FreeBSD Jails.
Install
Süsteemi aluseks on valitud gentoo ning antud õpetus sobib vaid sellele operatsioonisüsteemile
Esimesena tuleb teha openvz toega kernel selleleks emergeda openvz patchiga kerneli kood
emerge openvz-sources
edasi siis järgnevad käsud ei hakka peatuma pikemalt linuxi kerneli tegemisel kuna pikem pala
cd /usr/src/linux make menuconfig make && make modules_install make install
Seejärel paigaldame openvz utiliidid
emerge vzctl rc-update add vz default /etc/init.d/vz start
kaks moodulit. failisüsteemiks ja interneti kasutamiseks
modprobe simfs modprobe vzethdev
Tõmbame gentoo stage alla näiteks saame selle aadressilt
ftp://ftp.eenet.ee/pub/gentoo/releases/x86/2007.0/stages/
mv stage3-x86-2007.0.tar.bz2 /vz/template/cache bunzip2 stage3-x86-2007.0.tar.bz2 mv stage3-x86-2007.0.tar stage3.tar gzip stage3.tar
Loome openvz masina mille id'ks 800 id alusel käib kogu virtuaalse masinaga töö. Allapoole 100 on id'd reserveeritud
vzctl create 800 --ostemplate stage3
Masina suuruseks tuleb umbes 400Mb
stardime masina
vzctl start 800
ja siseneme sellesse
vzctl enter 800
protsessitabel, nagu näha on pilt väga minimaalne
# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.2 1564 544 ? Ss 18:47 0:00 init [3] root 29955 0.0 0.2 1928 452 ? Ss 19:16 0:00 vzctl: pts/0 root 29956 0.0 0.7 2664 1544 pts/0 Ss 19:16 0:00 -bash root 24172 0.0 0.4 2192 888 pts/0 R+ 19:37 0:00 ps -aux
Võrgu seadistus
Võrgu seadistamine peaks töötama ka lihtsamalt kohe vz masinat luues kuid millegipärast tõrkus see süsteem
vzctl set 900 --veth_add veth900.0,00:12:34:56:78:9A,eth0,00:12:34:56:78:9B --save ifconfig veth900.0 0
Warning: --veth_add option is outdated use --netif_add instead Configure meminfo: 49152 Configure veth devices: veth101.0 Saved parameters for VE 800
echo 1 > /proc/sys/net/ipv4/conf/veth900.0/forwarding echo 1 > /proc/sys/net/ipv4/conf/veth900.0/proxy_arp echo 1 > /proc/sys/net/ipv4/conf/eth0/forwarding echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp vzctl exec 900 ifconfig eth0 0 vzctl exec 900 ifconfig eth0 193.40.0.193 netmask 255.255.255.128 vzctl exec 900 route add default dev eth0 route add 193.40.0.193 dev veth900.0
serveripoolt peaksime nägema
# ifconfig veth900.0
veth900.0 Link encap:Ethernet HWaddr 00:12:34:56:78:9A
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6569 errors:0 dropped:0 overruns:0 frame:0
TX packets:7785 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1011288 (987.5 Kb) TX bytes:7733410 (7.3 Mb)
Edasine häälestus
Portide ühendamine vz masina külge
mkdir /vz/root/800/usr/portage mount -o bind /usr/portage /vz/root/800/usr/portage
In order for VE to work, some nodes should be present in VE's /dev. For modern distributions, udev is taking care of it. For a variety of reasons udev doesn't make much sense in a VE, so the best thing to do is to disable udev and create needed device nodes manually.
Note that in some distributions /dev is mounted on tmpfs — this will not work in case of static /dev. So what you need to do is find out where /dev is being mounted on tmpfs and remove this. This is highly distribution-dependent; please add info for your distro here.
nano /etc/conf.d/rc RC_DEVICES="static"
Lingid
http://www.gentoo.org/proj/en/vps/openvz-howto.xml
