Saturday, April 19, 2014

VMUG India - Session 1 - Preparation Tips for VCAP-DCD !

In my last post I informed you about a session which we were about to kickoff at the India VMUG Chapter. I am pleased to say that, this being the first VMUG webniar event in India there were close to 50 VMUG members from India who joined the session. 

The topic for this session was as follows:-


As discussed during the WebEx meet, here are the critical links which can help you download the presentation & the recorded session. I have not hosted this on YouTube since it was increasing the file-size by multiple times with a degraded sound audio and video quality.

Link to the WebEx Recording (13 MB File) - Click Here
Link to the Player for playing this Recording - Click Here
Link to to the Presentation - Click Here

For those who attended the session today and who will listen to the recording, would appreciate if you could share your feedback in the comments section of this post.

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Friday, April 18, 2014

VMUG India Chapter Kick-starts - 1st Session - Preparation Tips for VCAP-DCD5

VMware User Group more popularly known as VMUG across the globe has finally taken turns to become an official chapter in India. Although the community has been out there for a while on the VMUG.COM India page, but there has been no real action for a while. 

As I write this post, I can confidently say that is the thing of the past. In the last few months the traction in the community towards forming a formal group with more engagements has been on a high. VMware on the other hand in India was on a drive to group up all the VCP certified members under one umbrella using the LinkedIn platform. This group is called the India VCP ClubI was a part of the group who are behind the initiative and I am proud to share that we are a gang of more than 2300 proud VCPs. That's a BIG BIG number and I am looking forward to work & communicate with all of them to ensure that the community becomes stronger by the day and I can contribute to the group in all possible ways.

So if you are a VCP and you are in India then you need to register and be a part of the gang so that you can learn and contribute to the awesome community. 

The India-VCP Club as you all know was a new initiative from VMware & was launched in Oct 2013 to connect the thousands of VMware Certified Professionals in the country in order to enable them to leverage on the knowledge & skills available across the community. Click here to Register to the India VCP Club on Linkedln.

This community will slowly transform into the formal VMUG chapter, the leaders for which have been chosen for few of the cities based on their interest and nominations filed. A more formalized structure to that will be available as we keep growing and aligning our efforts to build one of the largest VMUG's out there. Here is my attempt at a LOGO which we can use till we get a more official one from the VMUG headquarters.





In the past few days, we have had some informal discussions on getting a few sessions done on VMware Advanced Level Certifications by the group members. Being a VCAP certified myself, I thought this would be a great way to give back to the community and hence we planned a session which could help you prepare for the Datacenter Design exam popularly known as VCAP-DCD.

Since it was on a short notice, I reached out to John Arrasjid (needs no introduction being the FIRST VCDX in the world). John who evangelizes the VMware Education & certification program has given back lot to all the aspirants of VCP, VCAP and VCDXs around the globe. He was kind enough to share some fantastic content around the VCAP-DCD which I will be presenting on 18th April at 11:30 AM IST. I wish I could have written this post earlier to reach out to more people, but this is happening in exactly 10 hours from now.

I would encourage you to participate if you are one of the Aspirant for these advanced certifications. For those who cannot, we will be recording the session and sharing it via the India VCP Club page, VMUG India Page and through my blog. Here are the WebEx details.


Join us for the session “How to prepare (VCAP5-DCD) Certification "
VMware Certified Advanced Professional 5 - Data Center Design (VCAP5-DCD)
By Sunny Dua , Solution Architect at VMware.

Meeting information
-------------------------------------------------------
Topic: VMware Certified Advanced Professional 5 - Data Center Design (VCAP5-DCD)
Date: Friday, April 18, 2014
Time: 11:30 am, India Time (Mumbai, GMT+05:30)
Meeting Number: 927 295 575
Meeting Password: (This meeting does not require a password.)

-------------------------------------------------------
To start or join the online meeting
-------------------------------------------------------
Go to https://vmware.webex.com/vmware/j.php?ED=281883142&UID=504868612&RT=MiM0MQ%3D%3D



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Thursday, April 17, 2014

vCenter Operations Manager 5.x - FAQ Repository!

With the amount of work I have been doing on vCOps, I do get a number of questions on various platforms such as Twitter, Facebook, LinkedIn and on my posts around various things which people want to know. Although a great solution, it was not marketed the way it should have been and hence the awareness is missing. This is my attempt to make it easy for people to get some of the basic answers about the product on a single page. 

I will keep updating this PAGE as and when I get questions which I think will benefit the larger audience and will post it through the twitter and other social media channels. We will go in descending order to ensure you get the latest FAQs on the top of the list.

For getting updates regularly, I would recommend, you subscribe to vXpress and Follow me on Twitter..


vCenter Operations Manager 5.X - Frequently Asked Questions

*** Last Update Date - 17th April 2014 ***

FAQ 2 -  (Muditha Gayan Dissanayaka) - I just want to know one thing, how can I get a report of actual memory usage of VMs ? Because all the reports generated by the vCOP are depend on Active memory or some other thing...

RESPONSE - Great question... But what we need to understand is that Memory Usage is a thing of the past. vCOps uses the concept of derived metrics and not the primitive metrics such as usage. Usage is a virtual world can be incorrect data as we are taking about a shared infrastructure where, Memory & CPU are shared. Hence it will make sense to look at DEMAND rather than usage.. Demand is a derived metric which is a combination of Active memory + overheads.. That's the real utilization from the Guest OS perspective. Would recommend vCOps Analyze and Predict training which can help you drill down in the concepts...



FAQ 1 -  (Muditha Gayan Dissanayaka) - One thing I want to know, how can we tell to our customers to adjust allocated memory by analyzing DEMAND in order to maximize the memory utilization, because DEMAND is very small compare to allocated memory.As an example allocated memory to an Exchange Server is 16 GB, but DEMAND will be 3-4 GB !!!!, I just want to know a proper metric or an equation to suggest our customers like " 10 GB memory allocation is enough to this Exchange Server "


RESPONSE - I think your query is more related to the Over-sized VM Report which can sometimes be crazy to show to an application owner as it completely gives recommendations on the basis of Demand and not usage. 


There are 2 things which we need to keep in mind:- 

a) vCOps in its current Avatar, does not have the option to key in the bare minimum requirement for the OS or an application which is required to get support from an OS or Application vendor, hence you cannot just blindly rightsize the VM as per the recommendation in the report. You need to start with shaving off 15 to 20% to see the application behavior but yes, you cannot go below supported minimums. Eg. you cannot go on 512 MB of RAM on a Windows 2008 Server OS, since the minimum required and supported by MS is 2GB. I would so any rightsizing by taking the minimum required for support + demand + 20% buffer for Peaks and then come out with the final size. 

This might be an enhancement you might see in the future releases. 

b) Another thing to keep in mind is the policy which you have defined for the Oversize VM calculations. It is the most understood thing in the product and I will work on a blog post soon to explain it.. Just to let you know, I recommend a setting of 80% instead of the default 1% of the time. That will give you more real world results. 




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Wednesday, April 16, 2014

Tuesday, April 15, 2014

Part 3 - vCOps Cluster Utilization Dashboard - Bringing it all together!

This is the last and final part of a 3 post series on creating a vCOps Cluster Utilization Dashboard. Before you read or implement this part on your instance of vCenter Operations Manager, you need to ensure that you follow the following articles:-


Part 2 - Creating Supermetrics for Cluster Utilization Dashboard in vCOps!


So from the last part of this series you have the Supermetrics ID of all the Supermetrics which you have created in your environment. We have 8 supermetrics with id's from 1 to 8.


To begin with download the following XML file which has the code for the Utilization Metrics:-



Open this file in a notepad after downloading it and now replace the shown metrics with the supermetrics ID which you have captured in the part 2 of this post. For me the Supermetrics ID is from 1 to 8 & I have highlighted the same. You need to edit the file with the supermetric ID corresponding to your instance of vCOps.

WARNING - DO NOT CHANGE ANYTHING ELSE IN THE FILE NOR THE NAME OF THE FILE. LEAVE EVERYTHING AS IT IS.

Here is how the file will look like and the values you need to edit.


STEP 1 - Place the edited xml file in a specific location of the UI VM

1- Use an SCP software to login to the UI VM using the root credentials. I am using WinSCP.

2- Change the directory to the following location /usr/lib/vmware-vcops/tomcat-enterprise/webapps/vcops-custom/WEB-INF/classes/resources/reskndmetrics

3- Drag and drop the 3-Cluster Wise Utilization - int-file-ver2.xml file from your system where you downloaded it to this directory as shown in the screenshot below.




4- Right click on the target file and click on Properties to change the permission level to 644 (For Read & Execute rights) as shown below.






You are done with STEP 1. Let's look at STEP 2. Before that download the dashboard xml which you need to import from here:-


STEP 2 - Import the dashboard in vCOps Custom UI

1- Login to vCOps Custom UI with an ID with Administrative Privileges.

2- Click on the Import Option under Dashboard Tools.


3- Browse to the location where you have saved the 3-Cluster Wise Utilization-DB-ver2 and click on Import.

4- You will get a dialog box that your dashboard it successfully imported. Close the same and click on the Dashboards Menu to find a new dashboard named "CLUSTER WISE UTILIZATION"

5- Click on this and you will get the dashboard which we saw in the beginning of this post. Ain't it simple :-)

6- In case you do not see a blank dashboard, Edit the Resources Widget on the Left Pane, Browse to Resource Kinds - > Cluster Compute Resource -> Click on All Attributes once and click on OK. This will get you the list of the clusters and you will be good to go!!


Hope you enjoy this dashboard :-)

Closing this series. Will see you with another custom dashboard soon. Till then!!


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