People love BSD and it bothers me, that they cant run it on Eucalyptus private cloud inside their organisation. So, I took the challenge on building an openbsd image (EMI) which we could then run on Eucalyptus.
The version of openbsd used is 5.2 amd64 and Eucalyptus 3.2.0 on CentOS 6.3. Note that there were problems with running an instance store backed EMI and hence I ended up running an instance from boot-from-EBS EMI.
For the sake of simplicity, this post is...
This last weekend I was over at FOSDEM 2013, where 5,000
geeks descended onto the ULB univesity in Brussels, Belgium for a huge free and open source
software conference.
It was my first time at FOSDEM after many years of nearly attending and
the first thing that struck me was the size. There was over 5,000 people
in attendance over the two days, 390hrs of talks and every talk was
absolutely packed.
It reminded me...
You may be forgiven for thinking that a version 1.0 software release indicates some sort of significant milestone for the lifecycle of a project. Perhaps in many cases it does but with Ansible, not so much. Michael DeHaan articulates it much better than I could in this post to the project mailing list. My personal experience from using Ansible since v0.8 is that each release delivers consistency...
You've deployed and setup a private Cloud platform but now what? You need an application!
I've been experimenting with a number of technologies to generate workloads and give some demos to prospective Eucalyptus customers. A NoSQL database seems like a great use-case to demo as the technology benefits from being designed for scale-out workloads and this happens to be exactly what an IaaS Cloud does best.
There are an abundance of NoSQL implimentations (Cassandra, MongoDB,...
Eucalyptus comes with its own High Availability (HA) feature from version 3.0 and with the passage of time, it is becoming more and more stable with every release. With recent release (3.2.0 and onwards), it has got few behavioral changes, … Continue reading ...
I predict 2013 will be known for many things with regards to Eucalyptus as a company, but perhaps nothing will be more important to me personally than the decision alluded to in the title of this post. This year, Eucalyptus Professional Services is going open. All the way open.
There are a number of reasons we are making this shift, but the most important one is culture. If we truly are an open source company, does it make sense for us to develop closed-source intellectual property,...
A class method in python differs from an instance method in a couple important ways:
- It binds to a class rather than an instance (hence its name). Thus, its first argument is a class, often called
clsrather than the usualself. - It can be called on both an instance of a class and the class itself.
In general, they behave similarly, but one area in which they can differ is when we go to override the class method:
...最近，我看了一份关于各个公司使用公有云服务进行大数据分析所产生的费用方面的分析报告。尽管费用方面的数据很有意思，不过我更感兴趣的是这份报告关于在大数据分析当中如何使用云计算资源方面的描述。譬如说，从这份报告第11页的内容看来，在用于大数据分析的虚拟机实例当中，89%的实例属于小型虚拟机实例。换句话说，用来进行大数据分析的程序，其代码规模是相对较小的。
毫无疑问，管理大规模数据是一件很困难的事情。当数据的规模越来越大时，实时性、完整性、私密性就越来越难以实现。别的不说，光是确认什么时候可以安全地删除一份数据就够让人头疼的。
但是，如果说大数据就是“那个答案”的话，我们需要小量程序来提出那个问题。
由此我们引出大数据和基础设施服务（IaaS）之间的关系。我们已经积累了一些在Eucalyptus上进行大数据分析（...
简介
和运行在数据中心里的任何生产系统一样，用于生产环境的Eucalyptus私有云需要一个健康监测系统。健康监测系统的功能是使得系统管理员能够及时了解资源使用状况，未来的发展趋势，并在资源池（服务器、网络、存储等等）出现问题的情况下提供可靠的真短信息。我们在我们自己的生产系统当中使用Nagios来对Eucalyptus云平台进行监控。如果您所部署的Eucalyptus云平台还没有任何监控系统，我们推荐您也使用Nagios来对Eucalyptus云平台进行监控。
Nagios是一个开放源代码的IT资源监控系统，可以从Nagios的网站或者其他开源软件仓库获得。在Nagios的网站上对Nagios的介绍如下：
“Nagios是一个强大的监控系统。它使得企业能够及时发现并解决IT设施中存在的问题，以免关键性业务流程受到影响。（Nagios is a...
