Aah. Got it. Forgot about the ip addr command. Cool. So now I have the option to bind as well as use route command. Kristoffer answered about using attribute references so I should be all set. Thanks Guys.
On Thu, Jan 7, 2016 at 4:12 PM, Jorge Fábregas <jorge.fabre...@gmail.com> wrote: > On 01/07/2016 05:28 AM, Nikhil Utane wrote: > > So my question is, how to pass the virtual IP to my UDPSend OCF agent so > > that it can then bind to the vip? This will ensure that all messages > > initiated by my UDPSend goes from vip. > > Hi, > > I don't know how ping -I does it (what system call it uses) but I think > you'll have to implement that if you want your program to source > connection from a particular virtual IP. > > As far as I know, the way this is usually done these days is by creating > routes. Something like: > > ip route change 192.168.14.0/24 dev eth0 src 192.168.14.4 > > > > Out of curiosity, where is this virtual IP stored in the kernel? > > I expected to see a secondary interface ( for e.g. eth0:1) with the vip > > but it isn't there. > > Well, in the old days we used to have a "virtual interface" (eth0:1, > eth0:2 etc) but the proper modern way is to use "virtual addresses" > within a single interface. The caveat is that you need to use the ip > command to show these virtual addresses (ifconfig is not aware of them): > > ip addr show > > You'll see there the notion of a primary IP and secondaries. The system > will initiate connection from the primary by default (unless you specify > a route like the one above). > > HTH, > Jorge > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org >
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