openstack release:
Es*** April 2012 2012.1 1.4.8
Diablo October 2011 2011.3 1.4.3
Cactus April 2011 2011.2 1.3.0
Bexar March 2011 2011.1 1.2.0
Austin October 2010 0.9.0 1.0.0
openstack components:
Service name Code name
Identity Keystone 为其他组件提供认证等服务
Compute Nova 计算组件
Image Glance 镜像服务
Dashboard Horizon django的gui
Object Storage Swift 对象存储服务
openstack 服务和 linux 服务：
linux 单一
openstack = linux单个服务+linux单个服务
nova-compute + nova-scheduler = Compute service
Installing Network Time Protocol (NTP):
1.#apt-get install -y ntp
2.#sed -i 's/server ntp.ubuntu.com/server ntp.ubuntu.com\nserver 127.127.1.0\nfudge 127.127.1.0 stratum 10/g' /etc/ntp.conf
3.on compute node:
a cron job:
ntpdate 'controllernode ip'
hwclock -w
Cloud Controller(all the nova- services )
compute nodes(only the nova-compute service)
nova-network service running in a multi-node install.
OpenStack Identity service管理用户，帐号，提供认证服务？to其他openstack components
CU竟然转了xes,***?!
==over==
hadoop和云计算
openstack和云计算
hadoop和openstack
他们都有啥关系？
hadoop 和 openstack 是云计算的子集？
openstack可以看成是 iaas 吗？
hadoop 可以看成是paas吗？
===over
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