[ClusterLabs] Does CMAN Still Not Support Multipe CoroSync Rings?

[Jan Friesse]

Eric,


> Well, I finally got around to trying out the <altname> tag and I managed to get two rings running, but the first ring is not obeying my address and port directives.
> 
> Here's my cluster.conf
> 
> <cluster config_version="9" name="ha10ab">
>    <fence_daemon/>
>    <clusternodes>
>      <clusternode name="ha10a" nodeid="1">
>        <multicast addr="239.255.5.1" port="4000"/>
>        <altname name="ha10a-cl" port="4000" mcast="239.255.5.2"/>
>        <fence>
>          <method name="pcmk-method">
>            <device name="pcmk-redirect" port="ha10a"/>
>          </method>
>        </fence>
>      </clusternode>
>      <clusternode name="ha10b" nodeid="2">
>        <multicast addr="239.255.5.1" port="4000"/>
>        <altname name="ha10b-cl" port="4000" mcast="239.255.5.2"/>
>        <fence>
>          <method name="pcmk-method">
>            <device name="pcmk-redirect" port="ha10b"/>
>          </method>
>        </fence>
>      </clusternode>
>    </clusternodes>
>    <cman broadcast="no" expected_votes="1" transport="udp" two_node="1"/>
>    <fencedevices>
>      <fencedevice agent="fence_pcmk" name="pcmk-redirect"/>
>    </fencedevices>
>    <rm>
>      <failoverdomains/>
>      <resources/>
>    </rm>
> </cluster>
> 
> The rings are up...
> 
> [root at ha10b ~]# corosync-cfgtool -s
> Printing ring status.
> Local node ID 2
> RING ID 0
>          id      = 192.168.10.61
>          status  = ring 0 active with no faults
> RING ID 1
>          id      = 198.51.100.61
>          status  = ring 1 active with no faults
> 
> HOWEVER, when I run tcpdump, I can see that ring2 running on the appropriate multicast address and port, but ring1 is running on the default address and port...
> 
> [root at ha10b ~]# tcpdump -nn -i bond0 net 239.192.0.0/16
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on bond0, link-type EN10MB (Ethernet), capture size 65535 bytes
> 22:54:36.738395 IP 192.168.10.60.5404 > 239.192.170.111.5405: UDP, length 119
> 22:54:40.547048 IP 192.168.10.60.5404 > 239.192.170.111.5405: UDP, length 119
> 
> How do I get ring1 running on my desired address and port of 239.255.5.1, port 4000

I'm not sure "mcast" for every node is really needed.

Try last example of:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/cluster_administration/s1-config-rrp-cli-ca


<cman>
    <multicast addr="239.192.99.73" port="666" ttl="2"/>
    <altmulticast addr="239.192.99.88" port="888" ttl="3"/>
</cman>

Honza

> 
> --Eric
> 
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