- 測試環境：Ubuntu 12.04 LTS
jazz@jazzbook:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.2 LTS
Release: 12.04
Codename: precise
- 感覺上 LXC 1.0 的功能比較齊全(Ex. 支援根據 DNS 分配 IP 的機制)，因此直接採用 precise-backports 套件庫中的 lxc 1.0 版本
echo "deb http://free.nchc.org.tw/ubuntu precise-backports main universe" > /tmp/precise-backport.list
sudo mv /tmp/precise-backport.list /etc/apt/sources.list.d/
sudo apt-get update
- 安裝 LXC 1.0 版本
sudo apt-get install lxc
jazz@jazzbook:~$ lxc-version
lxc version: 1.0.0.alpha1
- 根據 /etc/default/lxc-net 的說明，可以設定一個檔案，來根據 hostname 決定 IP 分配
# Uncomment the next line if you'd like to use a conf-file for the lxcbr0
# dnsmasq. For instance, you can use 'dhcp-host=mail1,10.0.3.100' to have
# container 'mail1' always get ip address 10.0.3.100.
#LXC_DHCP_CONFILE=/etc/lxc/dnsmasq.conf
root@jazzbook:~# echo "LXC_DHCP_CONFILE=/etc/lxc/dnsmasq.conf" >> /etc/default/lxc-net
root@jazzbook:~# cat > /etc/lxc/dnsmasq.conf << EOF
dhcp-host=hdp11,10.0.1.111
dhcp-host=hdp12,10.0.1.112
dhcp-host=hdp13,10.0.1.113
dhcp-host=hdp14,10.0.1.114
dhcp-host=hdp15,10.0.1.115
dhcp-host=hdp16,10.0.1.116
dhcp-host=hdp17,10.0.1.117
dhcp-host=hdp18,10.0.1.118
dhcp-host=hdp19,10.0.1.119
dhcp-host=hdp20,10.0.1.120
dhcp-host=hdp21,10.0.1.121
dhcp-host=hdp22,10.0.1.122
dhcp-host=hdp23,10.0.1.123
dhcp-host=hdp24,10.0.1.124
dhcp-host=hdp25,10.0.1.125
dhcp-host=hdp26,10.0.1.126
dhcp-host=hdp27,10.0.1.127
dhcp-host=hdp28,10.0.1.128
dhcp-host=hdp29,10.0.1.129
dhcp-host=hdp30,10.0.1.130
EOF
- 建立 20 個 VM 的主機名稱對應(hostname)
root@jazzbook:~# cat >> /etc/hosts << EOF
# for LXC
10.0.1.111 hdp11
10.0.1.112 hdp12
10.0.1.113 hdp13
10.0.1.114 hdp14
10.0.1.115 hdp15
10.0.1.116 hdp16
10.0.1.117 hdp17
10.0.1.118 hdp18
10.0.1.119 hdp19
10.0.1.120 hdp20
10.0.1.121 hdp21
10.0.1.122 hdp22
10.0.1.123 hdp23
10.0.1.124 hdp24
10.0.1.125 hdp25
10.0.1.126 hdp26
10.0.1.127 hdp27
10.0.1.128 hdp28
10.0.1.129 hdp29
10.0.1.130 hdp30
EOF
- 為了讓根據 DNS 主機名稱對應分配 IP 的機制生效，必須重新啟動 lxc-net
root@jazzbook:~# /etc/init.d/lxc restart
root@jazzbook:~# /etc/init.d/lxc-net restart
- 先建立五個 LXC VM 試試看
root@jazzbook:~# for ((i=11;i<=15;i++)); do lxc-create -t ubuntu -n hdp$i; done
Checking cache download in /var/cache/lxc/precise/rootfs-i386 ...
Copy /var/cache/lxc/precise/rootfs-i386 to /usr/lib/i386-linux-gnu/lxc ...
Copying rootfs to /usr/lib/i386-linux-gnu/lxc ...
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
Generating locales...
en_US.UTF-8... done
Generation complete.
Creating SSH2 RSA key; this may take some time ...
Creating SSH2 DSA key; this may take some time ...
Creating SSH2 ECDSA key; this may take some time ...
##
# The default user is 'ubuntu' with password 'ubuntu'!
# Use the 'sudo' command to run tasks as root in the container.
##
- 從以上訊息可以得知，預設的帳號密碼都是 ubuntu
- 啟動 5 個 LXC VM
root@jazzbook:~# for ((i=11;i<=15;i++)); do lxc-start -d -n hdp$i; done
- 用 lxc-ls 查詢分配到的 IP 位置，看樣子 LXC_DHCP_CONFILE 的設定沒啥用 :P
root@jazzbook:~# lxc-ls --fancy
NAME STATE IPV4 IPV6 AUTOSTART
-------------------------------------------
hdp11 RUNNING 10.0.3.232 - NO
hdp12 RUNNING 10.0.3.119 - NO
hdp13 RUNNING 10.0.3.201 - NO
hdp14 RUNNING 10.0.3.210 - NO
hdp15 RUNNING 10.0.3.243 - NO
- 安裝 LXC Web Panel
jazz@jazzbook:~$ sudo su -
root@jazzbook:~# wget http://lxc-webpanel.github.io/tools/install.sh -O - | bash
