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随笔分类 - 云计算
摘要：注册：http://cloudfoundry.com/ 注册完了等一会会收到一个随机密码登陆系统后可以创建Micro Cloud Foundry，接着可以下载一个可以用VMWare打开的镜像。下面的操作不需要下载这个镜像。安装vmc：Installing Ruby and RubyGems: sudo apt-get install ruby-full rubygems sudo gem install rubygems-update sudo /var/lib/gems/1.8/bin/update_rubygemsInstalling vmc: sudo gem install v...
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posted @ 2012-03-24 21:32
摘要：Reference Book: <<Engineering long-lasting software>>http://saasbook.infoChapter One Engineering Software is Different from Engineering Hardwarehttps://www.coursera.org/saas/lecture/preview1.1-1.2 - ...
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posted @ 2012-02-19 19:49
摘要：安装Java JDK：到sun网站上下载jdkchmod +x jdk-6u30-linux-x64.bin ./jdk-6u30-linux-x64.bin下载Hadoopwget http://labs.renren.com/apache-mirror/hadoop/common/hadoop-0.20.205.0/hadoop-0.20.205.0.tar.gz tar zxvf ha...
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posted @ 2012-02-05 21:33
摘要：所有managed domain在创建的时候(xm new)会将其配置信息写入：/var/lib/xend/domains/UUID/config.sxp这样，在dom0重启的时候，xend会将/var/lib/xend/domains下的所有虚机自动创建出来。该文件的示例如下：(domain (domid 49) (vcpus_params ((cap 0) (weight 256))) (PV_args 3) (PV_bootloader /usr/bin/pygrub) (cpus (() () () () () () () ())) (VCPUs_live 1) (actions_af
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posted @ 2011-11-27 16:58
摘要：Problem 1: UDP, VLANs and Lack of Flow ControlProblem VLAN devices do not support scatter-gather This means the that each skb needs to be linearised and thus cloned if they are trasmitted on a VLAN device Cloning results in the original fragments being released This breaks Xen's netfront/netback
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posted @ 2011-11-27 15:25
摘要：libvirt获取实际内存的实现libvirt可以通过virDomainGetInfo()来得到虚机信息： struct virDomainInfo{ unsigned char state : the running state, one of virDomainState unsigned long maxMem : the maximum memory in KBytes allowed unsigned long memory : the memory in KBytes used by the domain unsigned short nrVirtCpu : the number
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posted @ 2011-11-26 14:57
摘要：If you ever want to get to the grub menu while using pygrub - there is a really simple way of doing that. Just add : bootargs="-i"into the /etc/xen/{domU config file}. And the next time you start the VM, it will bring up the grub menu. Quite handy when you need to recover the root password
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posted @ 2011-11-12 20:43
摘要：udevis the device manager for the Linux 2.6 kernel series. Primarily, it manages device nodes in/dev. It is the successor of devfs and hotplug, which means that it handles the/devdirectory and all user space actions when adding/removing devices, including firmware load. The system is divided into th
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posted @ 2011-11-12 20:29
摘要：I'm looking for some definite info about when it's allowed to restartthe various Xen daemons (xend, xenstored and xenconsoled).Up to now I worked with the assumption that I can restart them whileguest domains are running on the host and there's no harm done.Indeed there wasn't, until
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posted @ 2011-11-12 20:25
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