[Pacemaker] Cluster with fc18 and fc17 nodes.

[Andrew Beekhof]

On 23/08/2013, at 7:18 PM, Francis SOUYRI <francis.souyri at apec.fr> wrote:

> Hello,
> 
> For a long time I used heartbeat/drbd for 2 nodes clusters with Fedora, I used the internal crm of heartbeat not pacemaker.
> 
> I planned to upgrade from the fc17 to the fc18, but on fc18 heartbeat is obsolete and I have to change to corosync/pacemaker.
> For information the heartbeat fc17 package work fine on fc18 and the cluster with a node fc17 and the other fc18 (without the firewall activated by default !!!) work perfectly (The final configuration is to have the both node in fc18).
> 
> But the corosync/pacemaker do not work with a fc17 node and a fc18 node.
> 
> I have these packages.
> 
> drbd-pacemaker-8.4.2-1.fc17.i686
> pacemaker-libs-1.1.7-2.fc17.i686
> pacemaker-1.1.7-2.fc17.i686
> corosync-2.3.0-1.fc17.i686
> corosynclib-2.3.0-1.fc17.i686
> pacemaker-cli-1.1.7-2.fc17.i686
> pacemaker-cluster-libs-1.1.7-2.fc17.i686
> 
> pacemaker-libs-1.1.9-0.1.70ad9fa.git.fc18.i686
> pacemaker-1.1.9-0.1.70ad9fa.git.fc18.i686
> drbd-pacemaker-8.4.2-1.fc18.i686
> pacemaker-cluster-libs-1.1.9-0.1.70ad9fa.git.fc18.i686
> pacemaker-cli-1.1.9-0.1.70ad9fa.git.fc18.i686
> corosynclib-2.3.1-1.fc18.i686
> corosync-2.3.1-1.fc18.i686
> 
> The corosync config :
> 
> totem {
> version: 2
> secauth: off
> cluster_name: cluster
>  interface {
>        ringnumber: 0
>        bindnetaddr: 192.168.1.0
>        ttl: 1
>  }
> transport: udpu
> }
> 
> nodelist {
>  node {
>        ring0_addr: noeud1.xxxx.fr
>       }
>  node {
>        ring0_addr: noeud2.xxxx.fr
>       }
> }
> 
> quorum {
> provider: corosync_votequorum
> }
> 
> logging {
> to_syslog: yes
> debug: off
> }
> 
> A short time after starting pacemaker I have this.
> 
> FC18 node:
> 
> Corosync Nodes:
> noeud1.xxxx.fr noeud2.xxxx.fr
> Pacemaker Nodes:
> noeud1.xxxx.fr noeud1.xxxx.fr noeud2.xxxx.fr noeud2.xxxx.fr
> 
> <node id="-33445696" uname="noeud2.xxxx.fr" type="normal"/>
> <node id="-1062731267" uname="noeud1.xxxx.fr" type="normal"/>
> <node id="3232236029" uname="noeud1.xxxx.fr"/>
> <node id="4261521600" uname="noeud2.xxxx.fr"/>
> 
> Why four nodes ?!? What are the nodes 3232236029 and 4261521600 ?

The same as the other two but stored as %u (unsigned int) instead of %d (signed int).
This was a bug in older versions, you can work around it by specifying a (small) nodeid in corosync.conf

> 
> FC17 node:
> 
> Corosync Nodes:
> noeud1.xxxx.fr noeud2.xxxx.fr
> Pacemaker Nodes:
> noeud1.xxxx.fr noeud2.xxxx.fr
> 
> <node id="-33445696" uname="noeud2.xxxx.fr" type="normal"/>
> <node id="-1062731267" uname="noeud1.xxxx.fr" type="normal"/>
> 
> On the FC17 I have some messages like this "error: cib_perform_op: Discarding update with feature set '3.0.7' greater than our own '3.0.6'".
> On the FC18 "warning: cib_process_replace: Replacement 0.5.4 from noeud2.xxxx.fr not applied to 0.9.0: current epoch is greater than the replacement"
> 
> Pacemaker 1.1.7 and 1.1.9 are not compatible ?

This should provide some more information:
   http://blog.clusterlabs.org/blog/2013/mixing-pacemaker-versions/


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