[ClusterLabs] Antw: IPaddr2 RA and bonding

[Ulrich Windl]

>>> Tomer Azran <tomer.azran at edp.co.il> schrieb am 07.08.2017 um 12:02 in Nachricht
<B71057A42F7488498D6FAF859D9283FE2AC47F38 at EDPEX02.globalit.local>:
> Hello All,
> 
> We are using CentOS 7.3 with pacemaker in order to create a cluster.
> Each cluster node ha a bonding interface consists of two nics.
> The cluster has an IPAddr2 resource configured like that:
> 
> # pcs resource show cluster_vip
> Resource: cluster_vip (class=ocf provider=heartbeat type=IPaddr2)
>   Attributes: ip=192.168.1.3
>   Operations: start interval=0s timeout=20s (cluster_vip -start-interval-0s)
>               stop interval=0s timeout=20s (cluster_vip -stop-interval-0s)
>               monitor interval=30s (cluster_vip -monitor-interval-30s)
> 
> 
> We are running tests and want to simulate a state when the network links are 
> down.
> We are pulling both network cables from the server.
> 
> The problem is that the resource is not marked as failed, and the faulted 
> node keep holding it and does not fail it over to the other node.
> I think that the problem is within the bond interface. The bond interface is 
> marked as UP on the OS. It even can ping itself:
> 
> # ip link show
> 2: eno3: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc mq master 
> bond1 state DOWN mode DEFAULT qlen 1000
>     link/ether 00:1e:67:f6:5a:8a brd ff:ff:ff:ff:ff:ff
> 3: eno4: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc mq master 
> bond1 state DOWN mode DEFAULT qlen 1000
>     link/ether 00:1e:67:f6:5a:8a brd ff:ff:ff:ff:ff:ff
> 9: bond1: <NO-CARRIER,BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue 
> state DOWN mode DEFAULT qlen 1000
>     link/ether 00:1e:67:f6:5a:8a brd ff:ff:ff:ff:ff:ff
> 
> As far as I understand the IPaddr2 RA does not check the link state of the 
> interface - What can be done?
> 
> BTW, I tried to find a solution on the bonding configuration which disables 
> the bond when no link is up, but I didn't find any.

Show the cliuster status, not the network status. My guess is that you haven't activated stonith.

Regards,
Ulrich


> 
> Tomer.