Welcome!

Release Management Authors: Liz McMillan, Jnan Dash, Lori MacVittie, Gilad Parann-Nissany, Carmen Gonzalez

Blog Feed Post

You Can Monitor Your XenServer With Monitis!

Left side (image): Hand crushing computer equpment; Right side (text): XenServer6 Intgrate, manage and automate a virtual datacenter. Learn More

As we have discussed on the Monitis blog virtualization is one of the hottest IT subjects today.

One leader in this field is Citrix — with the XenServer product family. XenServer is the most known commercial implementation of of the open source Xen hypervisor. By the way, you should pronounced Xen like “zen.” It comes from a Greek word meaning “guest.”

In the IT world, Xen originated as a research project, led by Ian Pratt at England’s Cambridge University. It was first developed by XenSource Inc., and after acquisition, the work was continued by Citrix. Currently, you can choose between 4 editions of XenServer:

  • XenServer [Free Edition]
  • XenServer Advanced Edition
  • XenServer Enterprise Edition
  • XenServer Platinum Edition

Other Citrix “Xen” technology, like XenApp or XenDesktop, are not related to the original Xen project.

In 2009, Citrix decided to open the source of XenServer, and the company created XCP (Xen Cloud Platform). In the first phase, XCP was a whole Linux distribution. Recently, the initiative has been extended to provide XAPI toolstack on standard Linux distribution, in the first place for Debian and Ubuntu. What this means is that you can try XAPI on your home machine.

Monitoring

In the article below, we’ll learn how to apply daemon exporting XenServer metrics to Monitis. This is only proof of concept, but it can be easily modified to do exactly what you want. (This is the power you get using Monitis Open API).

XenServer/XCP

There is a dedicated XenServer monitoring tool included in all paid editions. You can also find some third-party tools. Obviously, we are interested in how we can monitor XenServer and XCP with Monitis. One possible way is to enable SNMP on XenServer and treat it as a standard Linux in Monitis. After all, XenServer and XCP dom0 are based on CentOS. Another method that we are going to give an overview of today is XenServer/XCP-specific. XenServer enables you to download, host and store all VM statistic in a  RRD (Round Robin Database) using HTTP handler. You can find some information on how to use XenServer RRD data in two documents from the Citrix Community page (Click here and here). In the second document, you’ll see that there are two examples of Python scripts that we are going to use for the base to our daemon updating XenServer monitors in Monitis. Both scripts use the python “rrd_update” module. You can also find on this on the Citrix page or grab it from github.

Monitis

Monitis has dedicated libraries in many programing languages. You need to use python to export XenServer RRD; therefore to update results on Monitis, we are going to use the python library, too. The code can be obtained from our github repository. Please remember that you need the elementtree module, which is not a part of standard python distribution. Plus, you have to get it from the official website or obtain it from your distribution repository. There is a note about it in the code, but not in the original article.

 

xen2monitis

Having these two weapons, we are now ready to attack. First, there is the example code in our git repository that you can install on XenServer or Linux distribution with XCP. Alternately, you can choose another server with a connection to both Monitis and the XenServer that you want to monitor. However, installing our daemon on XenServer/XCP seems to be the best choice.

Here are some easy directions:

1.) Create the Xen2Monitis default directory:

mkdir /var/local/lib/xen2monitis

2.) Download the xen2monitis code which is part of Monitis-Linux-Scripts:

git clone https://github.com/monitisexchange/Monitis-Linux-Scripts.git

3.) Copy Xen2Monits file to default location:

cp  Monitis-Linux-Scripts.git/Xen2Monits/* /var/local/lib/xen2monitis

4.) Go to created directory:

cd /var/local/lib/xen2monitis

5.) Obtain the elementtree module:
- You can get the source code:

wget http://effbot.org/media/downloads/elementtree-1.2.6-20050316.tar.gz

- Or you can get a dedicated package for your distribution. If you plan to use XenServer, the elementtree is already installed there.

6.) Install the elementtree (if not already done by your distribution)
- for source code (the last command as root):

tar -xzf elementtree-1.2.6-20050316.tar.gz
cd elementtree-1.2.6-20050316
python setup.py install

7.) Next, add your API Key and Secret to a file. Please separate them with “,”.The default ‘secret file’ is  /usr/local/xen2monitis/secret

8.) Add the xenserver root password to your secret file, so it should be similar to:

5DQQ0460S18ERNRNRUI7M905N1, 7MA9XJNDL3KAMBAKFR9981N04J, secret_password

9.) Now you can start the daemon:

/usr/local/lib/xen2monitis/xen2monitis.py start

10.) You need to wait few minutes. You can check if your script works without any problems in /var/log/xs2monitis.log.

11.) After a few minutes, you should have a bunch of new graphs that you can add to the Dashboard by Monitors->Custom Monitor menu.

Monitor Name Conventions

When you look at newly created monitor names, you might be a bit confused. The names tend to be very long and have a strange set of strings separated by ‘-’, for example:

lisbon – cpu1 (HOST: 0c1bb847-d867-75ff-27e0-7b468f1385f2)

Such name conventions were chosen to ensure the uniqueness of each monitor. Imagine that you have two VMs called “Win7″. Daemon would not be able to distinguish between them and would save all data into one monitor! To address it, XenServer UUID (universally unique identifier), what looks like set of strings separated by “-”, is added to each title.

 

Daemon Modification

Using xen2monitis.py script, please remember that there are some values you can define at the beginning of the file, for example:

  • where is the secret file (default /usr/local/lib/xen2monitis/secret)
  • where is the lock file (default /var/run/xen2monitis.pid)
  • where is the log file (default /var/log/xen2monitis.log)
  • the url to pool master (default http://localhost)

You might prefer not to use daemon, but, instead, call up script from cron job. It’s not a big problem. You need to copy the main loop, start after line 115 to separate the file and convert it.

We hope this article showing you how to monitor your XenServer with Monitis makes your IT life a lot easier. Please share some tips of your own!

Share Now:del.icio.usDiggFacebookLinkedInBlinkListDZoneGoogle BookmarksRedditStumbleUponTwitterRSS

Read the original blog entry...

More Stories By Hovhannes Avoyan

Hovhannes Avoyan is the CEO of PicsArt, Inc.,

@ThingsExpo Stories
Things are changing so quickly in IoT that it would take a wizard to predict which ecosystem will gain the most traction. In order for IoT to reach its potential, smart devices must be able to work together. Today, there are a slew of interoperability standards being promoted by big names to make this happen: HomeKit, Brillo and Alljoyn. In his session at @ThingsExpo, Adam Justice, vice president and general manager of Grid Connect, will review what happens when smart devices don’t work togethe...
"There's a growing demand from users for things to be faster. When you think about all the transactions or interactions users will have with your product and everything that is between those transactions and interactions - what drives us at Catchpoint Systems is the idea to measure that and to analyze it," explained Leo Vasiliou, Director of Web Performance Engineering at Catchpoint Systems, in this SYS-CON.tv interview at 18th Cloud Expo, held June 7-9, 2016, at the Javits Center in New York Ci...
The 20th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held June 6-8, 2017, at the Javits Center in New York City, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Containers, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal ...
20th Cloud Expo, taking place June 6-8, 2017, at the Javits Center in New York City, NY, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy.
Internet of @ThingsExpo, taking place June 6-8, 2017 at the Javits Center in New York City, New York, is co-located with the 20th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. @ThingsExpo New York Call for Papers is now open.
In the next five to ten years, millions, if not billions of things will become smarter. This smartness goes beyond connected things in our homes like the fridge, thermostat and fancy lighting, and into heavily regulated industries including aerospace, pharmaceutical/medical devices and energy. “Smartness” will embed itself within individual products that are part of our daily lives. We will engage with smart products - learning from them, informing them, and communicating with them. Smart produc...
SYS-CON Events announced today that Catchpoint, a leading digital experience intelligence company, has been named “Silver Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Catchpoint Systems is a leading Digital Performance Analytics company that provides unparalleled insight into your customer-critical services to help you consistently deliver an amazing customer experience. Designed for digital business, C...
More and more brands have jumped on the IoT bandwagon. We have an excess of wearables – activity trackers, smartwatches, smart glasses and sneakers, and more that track seemingly endless datapoints. However, most consumers have no idea what “IoT” means. Creating more wearables that track data shouldn't be the aim of brands; delivering meaningful, tangible relevance to their users should be. We're in a period in which the IoT pendulum is still swinging. Initially, it swung toward "smart for smart...
WebRTC sits at the intersection between VoIP and the Web. As such, it poses some interesting challenges for those developing services on top of it, but also for those who need to test and monitor these services. In his session at WebRTC Summit, Tsahi Levent-Levi, co-founder of testRTC, reviewed the various challenges posed by WebRTC when it comes to testing and monitoring and on ways to overcome them.
The emerging Internet of Everything creates tremendous new opportunities for customer engagement and business model innovation. However, enterprises must overcome a number of critical challenges to bring these new solutions to market. In his session at @ThingsExpo, Michael Martin, CTO/CIO at nfrastructure, outlined these key challenges and recommended approaches for overcoming them to achieve speed and agility in the design, development and implementation of Internet of Everything solutions with...
Every successful software product evolves from an idea to an enterprise system. Notably, the same way is passed by the product owner's company. In his session at 20th Cloud Expo, Oleg Lola, CEO of MobiDev, will provide a generalized overview of the evolution of a software product, the product owner, the needs that arise at various stages of this process, and the value brought by a software development partner to the product owner as a response to these needs.
In 2014, Amazon announced a new form of compute called Lambda. We didn't know it at the time, but this represented a fundamental shift in what we expect from cloud computing. Now, all of the major cloud computing vendors want to take part in this disruptive technology. In his session at 20th Cloud Expo, John Jelinek IV, a web developer at Linux Academy, will discuss why major players like AWS, Microsoft Azure, IBM Bluemix, and Google Cloud Platform are all trying to sidestep VMs and containers...
SYS-CON Events announced today that MobiDev, a client-oriented software development company, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place June 6-8, 2017, at the Javits Center in New York City, NY, and the 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex softw...
Smart Cities are here to stay, but for their promise to be delivered, the data they produce must not be put in new siloes. In his session at @ThingsExpo, Mathias Herberts, Co-founder and CTO of Cityzen Data, discussed the best practices that will ensure a successful smart city journey.
Technology vendors and analysts are eager to paint a rosy picture of how wonderful IoT is and why your deployment will be great with the use of their products and services. While it is easy to showcase successful IoT solutions, identifying IoT systems that missed the mark or failed can often provide more in the way of key lessons learned. In his session at @ThingsExpo, Peter Vanderminden, Principal Industry Analyst for IoT & Digital Supply Chain to Flatiron Strategies, will focus on how IoT depl...
Big Data, cloud, analytics, contextual information, wearable tech, sensors, mobility, and WebRTC: together, these advances have created a perfect storm of technologies that are disrupting and transforming classic communications models and ecosystems. In his session at @ThingsExpo, Erik Perotti, Senior Manager of New Ventures on Plantronics’ Innovation team, provided an overview of this technological shift, including associated business and consumer communications impacts, and opportunities it m...
Manufacturers are embracing the Industrial Internet the same way consumers are leveraging Fitbits – to improve overall health and wellness. Both can provide consistent measurement, visibility, and suggest performance improvements customized to help reach goals. Fitbit users can view real-time data and make adjustments to increase their activity. In his session at @ThingsExpo, Mark Bernardo Professional Services Leader, Americas, at GE Digital, discussed how leveraging the Industrial Internet and...
"Tintri was started in 2008 with the express purpose of building a storage appliance that is ideal for virtualized environments. We support a lot of different hypervisor platforms from VMware to OpenStack to Hyper-V," explained Dan Florea, Director of Product Management at Tintri, in this SYS-CON.tv interview at 18th Cloud Expo, held June 7-9, 2016, at the Javits Center in New York City, NY.
There will be new vendors providing applications, middleware, and connected devices to support the thriving IoT ecosystem. This essentially means that electronic device manufacturers will also be in the software business. Many will be new to building embedded software or robust software. This creates an increased importance on software quality, particularly within the Industrial Internet of Things where business-critical applications are becoming dependent on products controlled by software. Qua...
Fact is, enterprises have significant legacy voice infrastructure that’s costly to replace with pure IP solutions. How can we bring this analog infrastructure into our shiny new cloud applications? There are proven methods to bind both legacy voice applications and traditional PSTN audio into cloud-based applications and services at a carrier scale. Some of the most successful implementations leverage WebRTC, WebSockets, SIP and other open source technologies. In his session at @ThingsExpo, Da...