Libvirt (Ubuntu/Debian)

Ubuntu                                  Debian
/etc/init.d/libvirt-bin                /etc/init.d/libvirtd


Tomcat Java MVN

JDK vs JRE
Java SE Development Kit    Java SE Runtime Environment

version 6 or 7


Cloud Management VS host management
CloudStack
OpenStack

oVirt
WebManager
Virtmanager



查詢 CPU 資訊  
$ lscpu

查詢 block device (硬碟) 資訊  
$ lsblk

檢視各種裝置 (預設未安裝)
$ lshw
$ sudo lshw -class network


Cloud Server stack

CPU core(s)  MemoryHDDNIC(s)count
820G500G, 500G, 500G, 500G, 4T(FC)  1G*4 + fibre channel*11
1632G
500G, 500G, 1T
1G*46
2448G500G, 500G, 1T1G*42
616G1T,   1T1G*24
24 port gigabit switch *2
核心 : 記憶體 = 1 : 2G
          
中華電信+緯穎(Wiwynn)
CHT_Virtuoso_2014_intro_tw.pdf

CPU core(s)MemoryHDDNIC(s)Count
1696G12T NFS1G*2 + 10G*21
1696G1T*2 LVM1G*2 + 10G*23
Switch: 1G*24 10G*4(8)
核心 : 記憶體 = 1 : 6G



Cloud Server stack (Future)

CPU core(s)  MemoryHDDNIC(s)count
832G256G(SSD), 1T, 4T(FC)  1G*4 + fibre channel*1 + 10G*11
1664G
256G(SSD), 1T
1G*4  + 10G*16
2496G
256G(SSD), 1T
1G*4  + 10G*12
624G256G(SSD), nT(ceph)1G*2  + 10G*14
24 port gigabit switch *2
16 port Xgigabit switch *1

number of HDD = (number of core) - 1
核心 : 記憶體 = 1 : 4G