I have tried both ifdown and using vmware to disconnect the interface from the VM.
It is likely a constraint issue, as I don't have much experience with corosync/pacemaker. On Thu, 15 Aug 2019 at 14:01, Jan Pokorný <[email protected]> wrote: > On 15/08/19 10:59 +0100, solarmon wrote: > > I have a two node cluster setup where each node is multi-homed over two > > separate external interfaces - net4 and net5 - that can have traffic load > > balanced between them. > > > > I have created multiple virtual ip resources (grouped together) that > should > > only be active on only one of the two nodes. > > > > I have created ethmonitor resources for net4 and net5 and have created a > > constraint against the virtual ip resources group. > > > > When one of the net4/net5 interfaces is taken > > clarification request: taken _down_ ? > > (and if so, note that there's this running misconception that > ifdown equals pulling the cable out or cutting it apart physically > and I am not sure if, by any chance, ethmonitor is not as sensitive > about this difference as corosync used to be for years, yet people > were not getting it right) > > > on the active node (where the virtual IPs are), the virtual ip > > resource group switches to the other node. This is working as > > expected. > > > > However, when either of the net4/net5 interfaces are down on BOTH nodes - > > for example, if net4 is down on BOTH nodes - the cluster seems to get > > itself in to a flapping state where there virtual IP resources keeps > > becoming available then unavailable. Or the virtual IP resources group > > isn't running on any node. > > > > Since net4 and net5 interfaces can have traffic load-balanced across > them, > > it is acceptable for the virtual IP resources to be running any of the > > node, even if the same interface (for example, net4) is down on both > nodes, > > since the other interface (for example, net5) is still available on both > > nodes. > > > > What is the recommended way to configure the ethmonitor and constraint > > resources for this type of multi-homed setup? > > -- > Jan (Poki) > _______________________________________________ > Manage your subscription: > https://lists.clusterlabs.org/mailman/listinfo/users > > ClusterLabs home: https://www.clusterlabs.org/
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