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Storage & Clustering Community Blog

Showing posts tagged with ApplicationHA
Showing posts in English
Zahid.Haseeb | 06 Jun 2012 | 0 comments

Environment

Two ESXi Servers = Esxi1 and Esxi2

version of Esxi Servers = 5.0

Vcenter OS = Windows2008R2(64bit)

SAN = iscsi SAN attached on both Esxi Servers

HA and DRS = enabled

Application HA = 5.1 SP2

Application HA OS = rhel 5.6 (64bit)

Application name = sshd

 

Problem

I was facing the subjected error while configuring the Application under Symantec Application  HA. See the below snap as a reference:

 

Solution

There may be other culprits but in my case there were two things which was occuring.

1.) initially I was trying to configure Symantec Application HA on a OS which was configured as vmware FT. On the vmware FT this will not be applicable as per my understanding because the status is same of both VMs as primary VM and the...

Raissa_T | 30 May 2012 | 0 comments

VMworld 2012 is around the corner - August 26-30th, 2012 (US) && October 9-11th (EMEA).  What do you want to see, hear, & learn at #VMworld 2012? Call for Papers Voting is open! Vote for your favourite topics. bit.ly/JnkmdG

Eric.Hennessey | 03 May 2012 | 1 comment

A funny thing happened the other day when I went to one of my favorite sites to look up a word...I saw the above message, but looking at the redirect URL, it says "failover-namechangedtoprotecttheinnocent.com". Now, far be it from me to be correcting the vocabulary of a site whose stock in trade is word definitions, but in the high availability biz, that is NOT what we mean by "failover". A failover is when you have a service under HA cluster control, and in the event of a failure, that service is relocated to another server in the cluster. In its entirety.

Clearly there was some attempt made at protecting the service, otherwise my browser would have just thrown an error saying the site wasn't available. But it's just as clear that protection wasn't extended to the entire business service. We introduced Virtual Business Services to Veritas Cluster...

Eric.Hennessey | 18 Apr 2012 | 0 comments

I've been blogging over the past couple of weeks under the theme "Everything you think you know about clustering is wrong". It's sort of a tongue-in-cheek theme, but the misconceptions I was trying to dispel are real and held by enough people that I felt they were worth addressing. But now I want to shift gears a little bit.

In my last post, I mentioned how a lot of people can't seem to break out of the late-1990s mindset of 2-node active/passive failover HA:

While large clusters meant we no longer needed two nodes for every critical application, many people's mindsets were still stuck in 1997 and they continued to view HA clustering in a 2-node, active/passive context.

To be sure, that's definitely not the case with all of our customers, especially...

anishv | 16 Apr 2012 | 0 comments

Thank you all for attending the session on "Maximizing Availability in Virtualized Environments" during the SAMG Customer Forum in March 2012. I hope you would have found it useful.

We discuseed the following content during the session.

"Implementation architectures of VCS and ApplicationHA for virtualized environments. We reviewed common use cases and discussed how others are achieving maximum application availability in their virtualization implementations. This session provided information for VMWARE, Solaris Zones/LDOMs, AIX LPARs/WPARs and Linux KVM environments"

Again, thank you for your participation and hope to see you soon!

Regards,

Anish Vaidya

Raissa_T | 13 Apr 2012 | 0 comments

IT organizations have embraced virtualization as a way to cut costs and make their data centers more agile to respond to business needs.  However, application visibility inside VMware HA is nascent and can lead to disastrous failures.  Listen to this podcast, as Lorenzo Galelli, Sr Principal Technical Product Manager at Symantec, explains how you can confidently gain visibility and control of mission-critical applications inside VMware.

For more information on ApplicationHA, please visit this page.

 

 

 

Eric.Hennessey | 10 Apr 2012 | 1 comment

 

In my last post I mentioned a few common misconceptions about HA clustering that I'd be debunking; namely that it's unreliable, complex, and expensive. There are others that we'll get to in later posts, but for this one I want to tackle the myths of unreliability and complexity, since they kind of go hand-in-hand.
 
The vast majority of our customers using Veritas Cluster Server (VCS) for high availability have been using it for quite some time and are completely happy with it. But we do hear from time to time from customers who say they've used HA clustering in the past - either VCS or Brand X - and stopped using it because it "broke". Frankly, this reaction baffles me. As an IT guy who's been in the business for - well, let's just say a long time, OK? - I learned early on that if something...
Eric.Hennessey | 05 Apr 2012 | 0 comments

We're making some pretty big changes in how we deliver high availability and disaster recovery, and to do that, we have to change how we look at HA & DR. But in order to do that, we first need to debunk a few myths about clustering that seem to have crept into a lot of people's heads over the years.

 

This is the first in a series of posts I'll be putting up here at Symantec Connect over the coming week or so in which I'll lay out some common misconceptions of HA clustering and explain why they're wrong. Here's an example of what some people believe about clustering and which I'll refute over the coming days:
  • Clustering is unreliable
  • Clustering is too complex
  • Clustering is expensive
Sure, like any other myth these have their origins in someone's actual experience, but just like the mythology...
Kimberley | 15 Mar 2012 | 0 comments

In this Enterprise Solutions Podcast, host Andy Nicholson speaks with Symantec Product Marketing Manager Chaya Adatrao. Their discussion focuses on how businesses can confidently ensure high availability for business-critical applications inside virtual machines across heterogeneous platforms with Symantec ApplicationHA. http://bit.ly/xeUrZK

Bhavin Thaker | 15 Mar 2012 | 0 comments

Easy IMF plugin to make a VCS agent IMF-enabled
================================================

1) Stop the VCS cluster
   # hastop -all

Note: The steps here are meant for education purposes only and
hence shutdown VCS. You can perform these steps by keeping
VCS online as well. Refer to the VCS Admin guide and
Agent Developer's guide for further details.

2) Let's write a quick VCS agent that starts the script myimf.sh
 
   # mkdir /opt/VRTSvcs/bin/ezimf
   # cd /opt/VRTSvcs/bin/ezimf

   # vi myimf.sh   (enter the following text)
---------------------------------------------------------------------------
#!/bin/sh

while [ 1 ]
do
        sleep 60
        /usr/bin/logger -p kern.alert "hello world from myimf.sh"...