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> From: Joseph Mack [SMTP:mack.joseph@xxxxxxx]
>
> Bowie Bailey wrote:
> >
> > I have a simple question.
> >
> > If I want to bring a server down for maintenance, I need to change the
> > weight to 0 so it will clear all of it's connections.
>
> well actually this doesn't allow any new connections.
> People already connected will be able to continue with their sessions
> untill they voluntarily disconnect.
>
Right. That's what I meant.
> > How do I do this?
>
> man ipvsadm
>
> look for the -w (weight) option
>
> when you setup, the default weight is 1, so you'll do something like
>
> ipvsadm -a -t $VIP:$SERVICE -r $REALSERVER:$SERVICE $FORWARDING -w 1
>
> to stop new connections you'll do
>
> ipvsadm -a -t $VIP:$SERVICE -r $REALSERVER:$SERVICE $FORWARDING -w 0
>
My setup looks like this:
IP Virtual Server version 0.9.14 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 172.16.17.30:80 wrr
-> 172.16.17.11:80 Route 1000 0 0
-> 172.16.17.168:80 Route 1000 0 0
I did this:
ipvsadm -a -t 172.16.17.30:80 -r 172.16.17.168:80 -g -w 0
and it gave me an error:
setsockopt failed: File exists
Destination already exists
The man page says that the '-a' option is for adding a new server. I am
trying to change a server that's already in the cluster. What am I missing?
> > Also, has anyone else noticed that the html version of the LVS-HOWTO on
> > linuxvirtualserver.org is messed up? It looks like the file got
> corrupted
> > and/or the html is messed up.
>
> the new version was uploaded a few minutes ago. You must have stepped
> in in the middle of the upload. It is OK at my end.
>
I checked it again from a different computer that doesn't use our proxy
server (just in case the bad version was being cached), and I got the same
results. Right after the FWMARK section of the index it starts looking
really weird.
This is at:
http://www.linuxvirtualserver.org/Joseph.Mack/HOWTO/LVS-HOWTO.html
> Joe
>
> --
> Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
> contractor to the National Environmental Supercomputer Center,
> mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA
>
Bowie Bailey
BUC International
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