Hi David, On Mon, Sep 30, 2013 at 12:41:23PM -0700, David Lang wrote: > On Mon, 30 Sep 2013, David Lang wrote: > > >On Mon, 30 Sep 2013, Michael Schwartzkopff wrote: > > > >>Am Montag, 30. September 2013, 21:12:56 schrieb Peter Romfeld: > >>>I am working in AWS i cant just use a VIP i need to use a floating > >>>secondary IP which i reassign through script, i want to let pacemaker > >>>handle the reassignment... > >> > >>Please explain the difference of a VIP and a "secondary IP" in > >>your opinion. > > > >with AWS you need to inform amazon of the change, not just change > >the IP on the local box, that requires much more work than a > >simple local VIP > > being more detailed, instead of just > ifconfig eth0:0 $vip > you have to do something like > > /opt/aws/bin/ec2-assign-private-ip-addresses -n $ENI_ID > --secondary-private-ip-address $VIP --allow-reassignment --region $REGION
We may consider adding such an option to IPaddr2. Has anybody ever tried that? > pingresult=`ping -c 1 -W 1 $VIP | grep time= | wc -l` > if [ "$pingresult" == "0" ]; then > echo `date` "-- Restarting network" > /sbin/service network restart > /dev/null 2>&1 That may break the cluster communication, which may lead to split brain, etc. Is that really the only way? Thanks, Dejan > fi > > this is horribly slow by comparison to VIP takover on normal local > systems, but it can still be far faster than killing a system and > spinning up a replacement. > > David Lang > _______________________________________________ > > > > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > > > > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > > > > > > > Project Home: http://www.clusterlabs.org > > > > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > > > > Bugs: http://bugs.clusterlabs.org > > > > _______________________________________________ > > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > > > Project Home: http://www.clusterlabs.org > > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > > Bugs: http://bugs.clusterlabs.org > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org