[Linux-cluster] I give up

[dayan]

I support it !!!



----- Original Message ----- 
From: "Christopher Barry" <Christopher.Barry at qlogic.com>
To: "linux clustering" <linux-cluster at redhat.com>
Sent: Thursday, November 29, 2007 10:40 AM
Subject: Re: [Linux-cluster] I give up


> On Wed, 2007-11-28 at 17:27 -0500, James Parsons wrote:
>> Scott Becker wrote:
>> 
> snip...
>> > Case two. I remove one node from the cluster to maintain it. Now I 
>> > have a two node cluster. Same issues as above. Luci wants to set 
>> > two_node = 1 in this case instead of just dealing with expected votes 
>> > = 1. 
>> 
>> I know why Luci is doing this -- she sees the cluster reduced from three 
>> nodes to two nodes and configures it (as the large majority or our 
>> typical users consider) appropriately. When you are finished maintaining 
>> the node and you tell Luci to add it back in to the cluster, she will 
>> remove those configuration attributes.
>> 
>> The sticking point seems to be your particular desired cluster behavior 
>> and the fact that it lies outside of what was expected for cluster suite.
>> 
>> If this is not appropriate behavior for you, then don't use Luci. You 
>> are free to use a text editor on the cluster.conf file and propagate it 
>> manually via the command line on one of the nodes, as you are free to 
>> edit the source code and add ssh support to your favorite fence agent. 
>> You are free to go off the map, and the members of this list (including 
>> many of the Red Hat engineers who write cluster code and watch this 
>> list) will assist you in your expedition as much as possible. We will 
>> all try our best to help you get where you want to go (and I think you 
>> would have to agree that you have had a very respectable response rate 
>> for your queries this last month - many have tried to offer you 
>> assistance), but if we can't think of a way to stretch the software to 
>> your needs, then we just can't.
> 
> Everyone here has been very helpful to me during my trials and
> tribulations. I'm pretty sure I would have bailed without it. But there
> is one thing I think would greatly help a lot of people - myself for
> sure - and that is accurate and complete documentation of the totality
> of the cluster conf file - with lots of example config files. The one
> schema for 4.x and 5.x doc I have found is incomplete. All documentation
> I have seen regarding setup and admin warns the user repeatedly NOT to
> edit the configuration file yourself! But the fact is, using the GUI
> apps, both conga and piranha, is *excruciatingly* slow and painful.
> That, and it does not help you understand how it actually works.
> 
> Frankly, and not to hurt anybody's feelings, or diminish the effort that
> has gone into the GUI projects, but manual editing of the file is the
> only reasonable way to set this up. Complete information on all of the
> tags and their precise meanings and organization would be way more
> valuable than a GUI that does not really work all that well. I'm betting
> it would take less developer time too.
> 
> Heck, If I can get all the data, I will write the doc and put it on the
> GFS wiki. That wiki is a great start. Lon, James or anyone - feel free
> to send me all conf file info you have and example configs and I will
> try to distill it all into something helpful.
> 
>> I do want to disagree strongly, however, with your blanket suggestion 
>> that this software is not complete, and is not a cluster solution. It is 
>> a solution for many, many users...not all of whom are RH customers. It 
>> is just not a solution for you, my friend.
>> 
>> Thanks for your many constructive comments. I hope you keep trying the 
>> software - we are here to help as best we can. I haven't given up on you 
>> *quite* yet! :)
>> 
>> -J
>> 
> 
> As it stands, I've plodded through, and have a 6-node virtual cluster
> that spans 2 ESX servers, that can stay up to the last man, (using a
> quorum disk), serving desktops for developers via vnc and xdmcp, and ssh
> sessions and nfs mounts - all load balanced through HA directors. Pretty
> damn sweet if I do say so myself ;) 
> I had to write the fence script for it, and replace nanny because it
> continuously segfaulted, but once a GFS Linux cluster is finally
> configured and running, it kicks serious butt, and it is indeed worth
> it. The thing is, if everyone gave up, where would OpenSource be today?
> 
> -- 
> Regards,
> -C
> 
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