[prev in list] [next in list] [prev in thread] [next in thread] 

List:       veritas-ha
Subject:    RE: [Veritas-ha] adding a node to a cluster
From:       Jerry Vochteloo <jerry.vochteloo () veritas ! com>
Date:       2003-09-30 23:19:28
[Download RAW message or body]

you can add a node to the cluster without stopping vcs on the machines
running vcs

add vcs packages to the new node (I would use pkgadd, but you can use
install and hand edit the config files later).
edit llthosts, llttab, gabtab

edit gabtab and llthosts on the existing machines

make sure that you add the new node to the system lists of the service
groups that you want to fail to it.

simple as that..

(assuming that your current hb links go into hubs and your shared storage
infrastructure in also extensible ie not shared scsi)



--
Dr Jerry Vochteloo
Senior Education Consultant
Veritas Software
Level 14, 207 Kent Street
Sydney, NSW, 2000
w: +61-2-8220-7043, m: 0408 206 748

The opinions stated here are mine and do not necessarily represent those of
VERITAS Software Corp


>  -----Original Message-----
>  From: John Cronin [mailto:jsc3@gtf.org]
>  Sent: Wednesday, 24 September 2003 7:27 AM
>  To: Schmitz, Jeffery
>  Cc: 'veritas-ha@mailman.eng.auburn.edu'
>  Subject: Re: [Veritas-ha] adding a node to a cluster
>  
>  
>  NOTE: You should verify these commands for yourself.  No warranty is
>        expressed or implied.  If you sue me I will say I told you not
>        to do this and that you should hire a professional.  Really.
>        You should.  I can refer you, if necessary.
>  
>  That said, if against my advice, you wish to continue:
>  
>  I believe you will have to do the following:
>  
>  1) Stop the cluster while leaving apps up and running:
>  
>  	/opt/VRTSvcs/bin/hastop -all -force
>  
>     This will leave all monitored applications (databases, etc)
>     up and running but will stop the cluster.
>  
>  2) You will most likely need to stop gab and llt:
>  
>  	/etc/rc2.d/S92gab stop
>  	/etc/rc2.d/S70llt stop
>  
>  3) You may need to unload the gab and llt modules, and no harm
>     in doing so:
>  
>     	modunload -i `modinfo | grep gab | awk '{print $1}'`
>     	modunload -i `modinfo | grep llt | awk '{print $1}'`
>  
>  4) Modify /etc/llthosts, /etc/gabtab, /etc/llttab and
>     /etc/VRTSvcs/conf/config/main.cf (and any other cf
>     that you may require ie types.cf if you added or
>     modified types and Oracle.cf if you are using the
>     Oracle agent, etc) as required to show the new node.
>     These modifications should be done on all nodes.
>  
>     Make sure that the "set-node" stanza in /etc/llttab is
>     DIFFERENT for each system, and if you have a
>     /etc/VRTSvcs/conf/sysname file, that whatever you set-node
>     to in the llttab matches what is in that file.
>  
>  5) Install the VCS packages on the new system - just use
>     pkgadd, no need to run installvcs.  You may also want
>     to put the system name (as shown in the config files)
>     in /etc/VRTSvcs/conf/sysname.  For consistency, check
>     to see if this has been done on the other two nodes.
>     I don't have a comprehensive list of packages and
>     it can vary by version of VCS, so just check for yourself
>     by looking in /opt and/or using pkginfo to figure it out.
>  
>     Technically you don't have to copy over main.cf, but it
>     won't hurt as long as it is identical.
>  
>     Also, as in 4 above, make sure the 'set-node' is correct
>     in /etc/llttab or you will have problems.
>  
>  6) Start gab and llt:
>  
>  	/etc/rc.d/S70llt start
>  	/etc/rc.d/S92gab start
>  
>  7) Start the cluster on all nodes:
>  
>  	/opt/VRTSvcs/bin/hastart
>  
>     Hopefully I am right about all these steps and you didn't
>     make any typos in the config files and at this point the
>     cluster software comes up again.  Check it out using
>     /opt/VRTSvcs/bin/hastatus.
>  
>  8) Assuming all went well, you will probably have to add
>     the node to any service group AutoStartList and SystemList
>     you wish using '/opt/VRTSvcs/bin/hagrp -modify' as required.
>  
>  I hope this works out, and I should add that I don't think I have
>  ever done this, except perhaps in a lab long ago, so you really
>  should verify this as I might be completely wrong and then you
>  really would be stuck if you listened to me, right?
>  
>  Good luck!
>  
>  On Tue, Sep 23, 2003 at 03:04:40PM -0500, Schmitz, Jeffery wrote:
>  -> 
>  -> I have been tasked with adding a node to a cluster - this 
>  will be the third
>  -> node in the cluster and these are big systems
>  -> Sun 6800's. My question is this. Is all that is required 
>  to install all the
>  -> vcs packages on the new node and then create the 
>  /etc/llthosts file and
>  -> /etc/llttab file and do the gabconfig? Do I need to copy 
>  all of the .cf
>  -> files over from one of the other
>  -> nodes or will that get written to the new node when it 
>  joins the cluster?
>  -> Also do I need to run the VCS install script on the node 
>  that is being
>  -> added?
>  -> 
>  -> thanks!!!!
>  -> 
>  -> Jeffery Schmitz
>  -> Unix/Linux Systems
>  -> Aim Investments
>  -> Desk 713-986-9075
>  -> Cell 713-859-2678
>  -> http://www.aiminvestments.com
>  -> 
>  -> _______________________________________________
>  -> Veritas-ha maillist  -  Veritas-ha@mailman.eng.auburn.edu
>  -> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha
>  
>  -- 
>  John Cronin
>  mailto: `echo NjsOc3@SgtPfA.orMg | sed 's/[NOSPAM]//g'`
>  _______________________________________________
>  Veritas-ha maillist  -  Veritas-ha@mailman.eng.auburn.edu
>  http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha
>  
_______________________________________________
Veritas-ha maillist  -  Veritas-ha@mailman.eng.auburn.edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha
[prev in list] [next in list] [prev in thread] [next in thread]