サブの方のサーバが死んだ。
起動中に強制終了しちゃった自分のせいだけど。
サブサーバはオープンソースのXen使ってたけど、今回XenServerにした。
KVMとかも使ってみたかったけど、完全仮想に対応してないから断念。
インストール
今回は、ホストOS用にSSD(32GB)、ゲストOS用にHDD(500GB)を使う。
ホストOSインストール時に、SRとして2つとも選択してしまうとSSDとHDDをLVMで繋げてしまう。
高速に動いて欲しいマシンと低速で大容量のマシンを作り分けるために、SRを分けたい。
インストール時はSSDのみを選択して、インストールが終わったあとでHDDをSRにする。
HDDを初期化する
fdiskでパーティションを1つ作る。
[root@xenserver2 ~]# fdisk -l Disk /dev/sda: 32.0 GB, 32044482560 bytes 255 heads, 63 sectors/track, 3895 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 499 4008186 83 Linux /dev/sda2 500 998 4008217+ 83 Linux /dev/sda3 999 3895 23270152+ 83 Linux Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table [root@xenserver2 ~]# fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. The number of cylinders for this disk is set to 60801. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) Command (m for help): m Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only) Command (m for help): p Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First cylinder (1-60801, default 1): Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-60801, default 60801): Using default value 60801 Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@xenserver2 ~]# fdisk -l Disk /dev/sda: 32.0 GB, 32044482560 bytes 255 heads, 63 sectors/track, 3895 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 499 4008186 83 Linux /dev/sda2 500 998 4008217+ 83 Linux /dev/sda3 999 3895 23270152+ 83 Linux Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 60801 488384001 83 Linux
HDDをSRにする
[root@xenserver2 ~]# xe sr-create type=lvm content-type=user device-config:device=/dev/sdb1 name-label="Local storage 2" d35e4dda-bc15-9050-da42-9a633140e686
仮想マシンをインストールした際にまずやったらよさそうな事
CentOS用。
これをやって、テンプレートに変換しとく。
# XenTool
mount /dev/xvdd /mnt/
yes | /mnt/Linux/install.sh
umount /mnt/
# SELinux
setenforce 0
sed -i "s/^SELINUX=.*$/SELINUX=disabled/i" /etc/sysconfig/selinux
# chkconfig
for SERVICE in `chkconfig --list | awk '{print $1}'`
do
chkconfig --level 0123456 $SERVICE off
done
for SERVICE in network sshd syslog xe-linux-distribution
do
chkconfig --level 2345 $SERVICE on
done
# Network
cat <<-'MACGENPY' > /usr/local/bin/macgen.py
#! /usr/bin/python
# macgen.py script generates a MAC address for Xen guests
#
import random
mac = [ 0x00, 0x16, 0x3e,
random.randint(0x00, 0x7f),
random.randint(0x00, 0xff),
random.randint(0x00, 0xff) ]
print ':'.join(map(lambda x: "%02x" % x, mac))
MACGENPY
chmod +x /usr/local/bin/macgen.py
cat <<-'CHANGEMAC' > /usr/local/bin/changemac.sh
#!/bin/bash
if [ $# -ne 1 ]; then
echo "Usage: changemac.sh interface"
exit 1
fi
INTERFACE=$1
IFCFG=/etc/sysconfig/network-scripts/ifcfg-$INTERFACE
if [ ! -f $IFCFG ]; then
echo "Not found interface config"
exit 1
fi
sed -i '/^\(MAC\|HW\)ADDR/d' $IFCFG
MAC=`/usr/local/bin/macgen.py`
echo "MACADDR=$MAC" >> $IFCFG
echo "$INTERFACE $MAC"
CHANGEMAC
chmod +x /usr/local/bin/changemac.sh
cat <<-'CHANGEMACALL' > /usr/local/bin/changemacall.sh
#!/bin/bash
for IFCFG in `find /etc/sysconfig/network-scripts/ | grep ifcfg-eth`
do
INTERFACE=${IFCFG#[./]*ifcfg-}
/usr/local/bin/changemac.sh $INTERFACE
done
CHANGEMACALL
chmod +x /usr/local/bin/changemacall.sh
/usr/local/bin/changemacall.sh
# Delete history
echo -n > ~/.bash_history
HISTFILESIZE=0
# shutdown
init 0
テンプレートから仮想マシンを作ったら、これだけはやり直す。
/usr/local/bin/changemacall.sh
参考リンク
SRについてはこの辺が詳しかった。
Citrix XenServer無償版 を使ってみた - tkkochanの日記
http://d.hatena.ne.jp/tkkochan/20090407/1239070236
XenServerを導入してみた: 出張デコパパ日記
http://fragment.moe-nifty.com/dekopa/2009/04/xenserver-3b9b.html
