[Veritas-bu] Converting stand-alone Master to clustered Master

[Donaldson, Mark]

The goal is to get off of the aging V880 and onto a cheaper Linux
platform.  At the same time, we've had a couple high-profile hardware
failures in the past couple months and, since the hardware is cheap (and
the VCS license is "free" thanks to our site license), putting in a
cluster seems a way to add reliability for the cost of a $5000 x86 box.

 

I don't intend to rename the master server, I'll move the name and, I
thought, make it the HA name for the pair - thus getting around the
infamous "can't rename the master server" problem.  That's why I was
thinking this would be easy to pull off.

 

I don't know if the company will spring for $15k worth of services,
though.  Kinda doubles the cost of the whole project.

 

From: Bryan Bahnmiller [mailto:bbahnmiller at dtcc.com] 
Sent: Tuesday, October 13, 2009 1:58 PM
To: Donaldson, Mark
Subject: Re: [Veritas-bu] Converting stand-alone Master to clustered
Master

 


Mark, 

  Ugh... Don't envy that task. A few comments. 

  The master server has to run on the virtual name (relocatable IP and
dns name.) This name and the names of the individual nodes are in the
EMM db. If you kept the name of the current master as your virtual name,
it should be a simpler task. Also, the agent is very intrusive.
(Especially on Windows.) There are agent options that can only be set
via the bpclusterutil command. That tells me that the agent is not all
that, what, conforming? 

  At the conference I went to, a Symantec employee was asked why
changing the name of the backup server is not supported. He said that
the name of the NBU master server is in 14 different places on Windows
servers and 11 places on Unix servers. And the names in the different
places have to be changed in the correct order. One mistake and nothing
works. 

   I sat in on some very interesting discussions about NBU HA. What are
you trying to accomplish? Most of the people I talked with agreed that
the main thing HA will give you is the capability of doing server
maintenance with minimal impact. Most hardware now is pretty reliable.
When was the last time you had a nic or hba fail? When the server fails
over, all backups stop. After a failover, you will still have to clear
out tape drives, restart backups and so on. The only currently allowed
HA configuration is active/passive. So you do have one server sitting
there idling, waiting for the other server to fail over. 

   Also, if you have the disk mirrored with VxVM, you'll have to see if
that is supported with the Linux agent for failover too. 

      Bryan 





"Donaldson, Mark" <Mark.Donaldson at Staples.com> 
Sent by: veritas-bu-bounces at mailman.eng.auburn.edu 

10/13/2009 02:32 PM 

To

<veritas-bu at mailman.eng.auburn.edu> 

cc

	
Subject

[Veritas-bu] Converting stand-alone Master to clustered Master

 

		




Page 14 of the NB High Availability guide:

=========
NetBackup does not support the conversion of an existing non-failover
NetBackup server to a failover NetBackup server.  Contact Symantec
Enterprise Technical Support.
=========

Huh?

Should be easy, I'd think.  Why would I need Tech Support?

Has anyone done this?

BTW: also converting from Solaris to Linux at the same time if I can
pull this off...

-Mark
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