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CentOS5でXenを動かしてみる

Modified: 6 May 2007

ドメイン０（ホストOS）の確認　（6 May 2007）
ゲストOSのインストール　（6 May 2007）

　ドメイン０（ホストOS）の確認　

　CentOS５のインストール時に、Xenを有効にする設定で行えば、インストールされ、設定され、ドメイン０も起動しています。

ドメイン０の起動確認

# /usr/sbin/xm list Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 366 1 r----- 427.6 #

Xenのカーネルかどうかを調べる

"grub.conf"を見れば、Xenのカーネルで起動することがわかります。

# 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/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/hda default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-8.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-8.el5 module /vmlinuz-2.6.18-8.el5xen ro root=/dev/VolGroup00/LogVol00 module /initrd-2.6.18-8.el5xen.img

　ゲストOSのインストール　

ゲストOS用のリソースの割付

# /usr/sbin/virt-install --nographics What is the name of your virtual machine? centos5v1 How much RAM should be allocated (in megabytes)? 128 What would you like to use as the disk (path)? /var/lib/xen/images/centos5v1.img How large would you like the disk (/var/lib/xen/images/centos5v1.img) to be (in gigabytes)? 4 What is the install location? http://ftp.riken.jp/Linux/centos/5/os/i386/ Starting install...

日本語を選択します。

Welcome to CentOS +---------+ Choose a Language +---------+ | | | What language would you like to use | | during the installation process? | | | | Gujarati ^ | | Hindi : | | Hungarian : | | Icelandic # | | Indonesian : | | Italian : | | Japanese : | | Kannada v | | | | +----+ | | | OK | | | +----+ | | | | | +---------------------------------------+ <Tab>/<Alt-Tab> between elements | <Space> selects | <F12> next screen

IPアドレスをマニュアルで設定する指定にし、IPv6は、Enableにしません。

+----------------+ Configure TCP/IP +----------------+ | | | [*] Enable IPv4 support | | ( ) Dynamic IP configuration (DHCP) | | (*) Manual configuration | | | | [ ] Enable IPv6 support | | (*) Automatic neighbor discovery (RFC 2461) | | ( ) Dynamic IP configuration (DHCP) | | ( ) Manual configuration | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +----------------------------------------------------+

ネットワークの設定をします。

+--------------+ Manual TCP/IP Configuration +---------------+ | | | Enter the IPv4 and/or the IPv6 address and prefix | | (address / prefix). For IPv4, the dotted-quad netmask | | or the CIDR-style prefix are acceptable. The gateway and | | name server fields must be valid IPv4 or IPv6 addresses. | | | | IPv4 address: 192.168.0.241___ / 255.255.255.0___ | | Gateway: 192.168.0.193____________________________ | | Name Server: 192.168.0.11_____________________________ | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +------------------------------------------------------------+

パッケージのダウンロード

パッケージのダウンロードが始まります。

以下のメッセージのあとしばらく時間がかかります。

Running anaconda, the CentOS system installer - please wait...

日本語が表示できないそうです。

+--------------+ Language Unavailable +--------------+ | | | ja_JP.UTF-8 display is unavailable in text mode. | | The installation will continue in English. | | | | +----+ | | | OK | | | +----+ | | | | | +----------------------------------------------------+

インストールの開始

インストールの開始です。

+------------------+ CentOS +-------------------+ | | | Welcome to CentOS! | | | | | | +----+ | | | OK | | | +----+ | | | | | +-----------------------------------------------+

「HDDが消えます」と出ますが、もちろんゲストOSのHDDの内容のことですから、Yesで進みます。

+-----------------+ Warning +-----------------+ | | | The partition table on device xvda was | | unreadable. To create new partitions it | | must be initialized, causing the loss of | | ALL DATA on this drive. | | | | This operation will override any previous | | installation choices about which drives | | to ignore. | | | | Would you like to initialize this drive, | | erasing ALL DATA? | | | | +-----+ +----+ | | | Yes | | No | | | +-----+ +----+ | | | | | +---------------------------------------------+

デフォルトでいいので、OKで進みます。

+-------------------------+ Partitioning Type +-------------------------+ | | | Installation requires partitioning of your hard drive. The | | default layout is reasonable for most users. You can either | | choose to use this or create your own. | | | | Remove all partitions on selected drives and create default layout. | | Remove linux partitions on selected drives and create default layout. | | Use free space on selected drives and create default layout. | | Create custom layout. | | | | Which drive(s) do you want to use for this installation? | | [*] xvda ^ | | # | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-----------------------------------------------------------------------+

「HDDが消えます」と再度出ますが、Yesで進みます。

+-------------+ Warning +-------------+ | | | You have chosen to remove all | | Linux partitions (and ALL DATA on | | them) on the following drives: | | | | /dev/xvda | | | | Are you sure you want to do this? | | | | +----+ +-----+ | | | No | | Yes | | | +----+ +-----+ | | | | | +-------------------------------------+

Yesで一応内容を確認します。

+-------+ Review Partition Layout +-------+ | | | Review and modify partitioning layout? | | | | +-----+ +----+ | | | Yes | | No | | | +-----+ +----+ | | | | | +-----------------------------------------+

確認できたら、OKですすみます。

+----------------------------+ Partitioning +----------------------------+ | | | Device Start End Size Type Mount Point | | VG VolGroup00 8064M VolGroup ^ | | LV LogVol01 288M swap # | | LV LogVol00 7776M ext3 / : | | /dev/xvda : | | xvda1 1 13 101M ext3 /boot : | | xvda2 14 1044 8087M physical v : | | : | | : | | : | | v | | | | +-----+ +------+ +--------+ +------+ +----+ +------+ | | | New | | Edit | | Delete | | RAID | | OK | | Back | | | +-----+ +------+ +--------+ +------+ +----+ +------+ | | | | | +------------------------------------------------------------------------+

メモリーが少ないそうですが、OKで進みます。

+------------------+ Low Memory +------------------+ | | | As you don't have much memory in this machine, | | we need to turn on swap space immediately. To | | do this we'll have to write your new partition | | table to the disk immediately. Is that OK? | | | | +-----+ +----+ | | | Yes | | No | | | +-----+ +----+ | | | | | +--------------------------------------------------+

ブートローダーはデフォルトのGRUBのままOKで進みます。

+----------+ Boot Loader Configuration +-----------+ | | | Which boot loader would you like to use? | | | | (*) Use GRUB Boot Loader | | ( ) No Boot Loader | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +--------------------------------------------------+

デフォルトのままOKで進みます。

+------------------+ Boot Loader Configuration +------------------+ | | | A few systems will need to pass special options to the kernel | | at boot time for the system to function properly. If you need | | to pass boot options to the kernel, enter them now. If you | | don't need any or aren't sure, leave this blank. | | | | console=xvc0____________________________________ | | | | [ ] Force use of LBA32 (not normally required) | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-----------------------------------------------------------------+

パスワードなしで進みます。

+-------------+ Boot Loader Configuration +-------------+ | | | A boot loader password prevents users from passing | | arbitrary options to the kernel. For highest | | security, we recommend setting a password, but this | | is not necessary for more casual users. | | | | [ ] Use a GRUB Password | | | | Boot Loader Password: ________________________ | | Confirm: ________________________ | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-------------------------------------------------------+

デフォルトのままOKで進みます。

+-------------------+ Boot Loader Configuration +-------------------+ | | | The boot manager CentOS uses can boot other operating systems | | as well. You need to tell me what partitions you would like to | | be able to boot and what label you want to use for each of them. | | | | Default Boot label Device | | * CentOS /dev/VolGroup00/LogVol00 ^ | | : | | : | | # | | v | | | | +----+ +------+ +------+ | | | OK | | Edit | | Back | | | +----+ +------+ +------+ | | | | | +-------------------------------------------------------------------+

デフォルトのままOKで進みます。

+----------+ Boot Loader Configuration +----------+ | | | Where do you want to install the boot loader? | | | | /dev/xvda Master Boot Record (MBR) | | /dev/xvda1 First sector of boot partition | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-------------------------------------------------+

確認してOKで進みます。

+-----------------+ Network Configuration for eth0 +-----------------+ | | | Description: Xen Virtual Ethernet | | Hardware Address: 00:16:3E:28:45:51 | | | | [ ] Use dynamic IP configuration (DHCP) | | [*] Enable IPv4 support | | [ ] Enable IPv6 support | | [*] Activate on boot | | | | Address Prefix (Netmask) | | IPv4: 192.168.0.47_____________________________ / 255.255.255.0___ | | IPv6: _________________________________________ / ________________ | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +--------------------------------------------------------------------+

確認して進みます。

+------------+ Miscellaneous Network Settings +------------+ | | | Gateway: 192.168.0.1______________________________ | | Primary DNS: 61.205.121.85____________________________ | | Secondary DNS: _________________________________________ | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +----------------------------------------------------------+

デフォルトのままOKで進みます。

+--------------------+ Hostname Configuration +---------------------+ | | | If your system is part of a larger network where hostnames are | | assigned by DHCP, select automatically via DHCP. Otherwise, | | select manually and enter in a hostname for your system. If you | | do not, your system will be known as 'localhost.' | | | | ( ) automatically via DHCP | | (*) manually centosi47.co-recipe.com_ | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-------------------------------------------------------------------+

UTCのチェックをはずし、Asia/TokyoにしてOKで進みます。

+-------+ Time Zone Selection +-------+ | | | What time zone are you located in? | | | | [ ] System clock uses UTC | | | | Asia/Tashkent ^ | | Asia/Tbilisi : | | Asia/Tehran # | | Asia/Thimphu : | | Asia/Tokyo v | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-------------------------------------+

パスワードを設定してOKで進みます。

+--------------+ Root Password +---------------+ | | | Pick a root password. You must type it | | twice to ensure you know what it is and | | didn't make a mistake in typing. Remember | | that the root password is a critical part | | of system security! | | | | Password: ********________________ | | Password (confirm): ********________________ | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +----------------------------------------------+

Serverのみを選択してOKで進みます。

+----------------------+ Package selection +----------------------+ | | | The default installation of CentOS includes a set of software | | applicable for general internet usage. What additional tasks | | would you like your system to include support for? | | | | [ ] Desktop - Gnome ^ | | [ ] Desktop - KDE # | | [*] Server : | | [ ] Server - GUI v | | | | [ ] Customize software selection | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +-----------------------------------------------------------------+

この後、すごーーーく時間がかかり、固まったように感じますが、がまんして、じっーーーと待ちましょう。

+---------+ Installation to begin +----------+ | | | A complete log of your installation will | | be in /root/install.log after rebooting | | your system. You may want to keep this | | file for later reference. | | | | +----+ +------+ | | | OK | | Back | | | +----+ +------+ | | | | | +--------------------------------------------+

パッケージがインストールされるので、終わるまで待ちます。

+------------------+ Package Installation +------------------+ | | | Name : glibc-common-2.5-12-i386 | | Size : 64166k | | Summary: Common binaries and locale data for glibc | | | | | | Status: | | | | 0% | | | | Packages Bytes Time | | Total : 473 802M 0:29:48 | | Completed: 12 15M 0:00:35 | | Remaining: 461 787M 0:29:13 | | | | 1% | | | +------------------------------------------------------------+

終了すると以下の画面になります。

Welcome to CentOS +----------------------+ Complete +-----------------------+ | | | Congratulations, your CentOS installation is complete. | | | | Remove any media used during the installation process | | and press <Enter> to reboot your system. | | | | | | +--------+ | | | Reboot | | | +--------+ | | | | | +---------------------------------------------------------+ <Enter> to reboot

<Enter>で再起動します。

再起動するのは、ゲストOSだけで、本体は再起動しません。

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