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From: Dennis Roos (dennis_at_intouch.nl)
Date: Mon 07 Jun 2004 - 12:30:26 BST

On 4 Jun 2004 at 18:39, Lucas Albers wrote:

> Dariush Pietrzak said:
> > Hmm, there is another issue here - if you already use app like HP
> > Open
> > View to do your other management, then putting it in control of
> > vservers might be the wisest choice.
> >
> > --
> What would be some useful cluster commands?
A couple of examples might be:
 * VServer replication
 * load-balancing applications
> What are some common vserver operations?
Status checking
IP management (depending on the underlying management)
Disk usage checks
Package updates
Services checks
Server creation/removal
Password resets for users
> Move vserver from one machine to another.
> Determine if any vservers are stopped.
> Stop,start,create vservers.
> The most useful imo is the replication.
> Steps:
> rsync vserver from one machine to another.
> copy over conf files.
> stop the old vserver.
> replicate the data.
> start the new vserver.
> Currently I do this by hand, if it was scripted I would have less
> chance of screwing it up, and shorter downtime on the move.
I'm looking into ways of automating these steps, hence the question
on SNMP or alternate ways to do remote management. I prefer a
trigger->reply mechanism to accomplish these tasks.

However, there is an easier way to better the uptime, using the lvs
way. The only issue here is keeping 2 vservers online and in-sync
the latter is probably the hardest part ;)

Dennis Roos

Network Engineer
InTouch N.V.
Middenweg 76
1097 BS Amsterdam
Tel: +31 (0)20 6752060
Fax: +31 (0)20 6758429

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