Re: 3 Server solution

Following documentation

 http://www.ultramonkey.org/3/topologies/sl-ha-lb-eg.html

Can anyone please help me with this.

On setting up the loopback configuration lo:0 on the primary and secondary
director / real server, the primary director stays fine, but the seconday
or backup director /real server becomes unresponsive.

Any idea what to look for in order to sort out this issue?

Imran.


On 6/26/06, Imran Aziz <[email protected]> wrote:
>
>  following
>
> http://www.ultramonkey.org/3/topologies/sl-ha-lb-eg.html
>
>  Restricting ARP Advertisments for the Director /Real Server I setup the
> loopback and then the server becomes unavailable from the client to
> configure :( what am I doing wrong , why does the server become unavailable
> and how do I sort this out ?
>
> Thanks a lot ,
>
> Imran.
>
>
>
> On 6/23/06, David Adams <[email protected]> wrote:
> >
> > Adding the loop back interface on x.x.x.47 shouldn't effect your
> > server responding on x.x.x.44.  Confirm that you've got the right
> > subnet mask, network and broadcast addresses and then try activating
> > the loopback interface.
> >
> > > Thanks for your quick response David. I do have a real IP address
> > > on the server configured on eth0 as xx.xxx.xx.44
> > > and now that I have removed the loopback entry the server is
> > > responding fine on .44.
> > >
> > > Anything else I should look into before I try the loopback setup
> > > again? in my view since this is a loopback entry it should only
> > > response if the real IP is not responding isnt that the case ?
> > >
> > > Imran.
> > >
> > >
> > > On 6/23/06, David Adams <[email protected]> wrote: You need a real IP
> > > address on that machine as well, in order to
> > > connect to it.  The "configure loopback interface" stuff you did
> > > should be for the virtual IP address.
> > >
> > >
> > > > Thank you so very much David for pointing me to the correct
> > > > documentation. I followed it on the server that is going to be
> > > > Linux Director / Real Server. On setting up the loop back interface
> > > > to the virtual IP address as suggested in the documentation
> > > >
> > > > http://www.ultramonkey.org/3/topologies/sl-ha-lb-eg.html
> > > >
> > > > "Configure Loopback Interface"
> > > > DEVICE=lo:0
> > > > IPADDR=xx.xxx.xx.47
> > > > NETMASK=255.255.255.128
> > > > NETWORK=xx.xxx.xx.0
> > > > BROADCAST=xx.xxx.xx.127
> > > > ONBOOT=yes
> > > > NAME=loopback
> > > >
> > > >
> > > > I ended up loosing connection to the server, and had to get the
> > > > loop back setting disabled for the moment to be able to connect to
> > > > it, any ideas why that happened and what I might be doing wrong ?
> > > >
> > > > Please note I did not revert back any settings listed in the
> > > > documentation here
> > > >
> > > > http://www.ultramonkey.org/3/topologies/ha-lb-eg.html
> > > >
> > > > Which I did earlier for this server.
> > > >
> > > > Thank you so very much,
> > > >
> > > > Imran.
> > > >
> > > >
> > > >
> > > >
> > > > On 6/20/06, David Adams < [email protected] > wrote: Your configuration is
> > > > more like this one than the one you mention:
> > > >
> > > > http://www.ultramonkey.org/3/topologies/sl-ha-lb-overview.html
> > > >
> > > > In essence though, after a quick look at your config files, you
> > > > should probably use 'gate' mode rather than 'masq'.
> > > >
> > > > > Hello All,
> > > > >
> > > > > I have 3 servers in total, and want to use one of the servers as a
> > > > > dedicated director server and one as director fail over and real
> > > > > server, third will be the dedicated real server. The documentation
> > > > > is related to 4 servers (two directors and two real servers)
> > > > >
> > > > > http://www.ultramonkey.org/3/topologies/ha-lb-eg.html
> > > > >
> > > > > in addition I have only one ethernet card on each machine. Hence
> > > > > all machines are on the same network.
> > > > >
> > > > > I have attempted to follow the above mentioned documentation but
> > > > > here is what is happening.
> > > > >
> > > > > the heartbeat starts fine on the primary director and backup
> > > > > director, the VIP gets setup fine, but when I send a request to
> > > the
> > > > > VIP the fallback IP is used and on issuing the command /sbin/
> > > > > ipvsadm -L -n indicates only the 127.0.0.1 is up and the actual
> > > > > real servers are down.
> > > > >
> > > > > I have attached all the configuration files that I altered.
> > > > >
> > > > > Can anyone please suggest a documentation related to a setup
> > > > > similar to mine or where should I look to get some more help.
> > > > >
> > > > > I am doing this for the first time so havent got much clue about
> > > > > how to setup loadbalancing and failover services.
> > > > >
> > > > > Any help would be  a blessing,
> > > > >
> > > > > Thanks a lot,
> > > > >
> > > > > Imran.
> > > > >
> > > > > < ldirectord.cf>
> > > > > <haresources>
> > > > > <authkeys>
> > > > > <ha.cf>
> > > >
> > > >
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