So, I was reading: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Cluster_Administration/s2-rrp-ccs-CA.html
about adding a second ring to one's CMAN configuration. I tried to add
a second ring to my configuration without success.
Given the example:
# ccs -h clusternet-node1-eth1 --addalt clusternet-node1-eth1
clusternet-node1-eth2
I'm assuming that clusternet-node1-eth2 is a name that resolves to the
IP address of the interface to add as the second ring? Otherwise I see
no way that the ccs command is supposed to know which (of possibly many)
interfaces to use for the second ring.
That didn't seem to work for me in any case:
# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 52:54:00:05:A7:08
inet addr:10.128.0.206 Bcast:10.128.7.255 Mask:255.255.248.0
inet6 addr: fe80::5054:ff:fe05:a708/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4662465 errors:0 dropped:0 overruns:0 frame:0
TX packets:1555036 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:520360401 (496.2 MiB) TX bytes:171863479 (163.9 MiB)
# grep 10.128.0.206 /etc/hosts
10.128.0.206 lotus-5vm8-ring1
# hostname
lotus-5vm8
# ccs -f /etc/cluster/cluster.conf --addalt $(hostname) $(hostname)-ring1
# ccs -f /etc/cluster/cluster.conf --getconf
<cluster config_version="8" name="foo2">
<fence_daemon/>
<clusternodes>
<clusternode name="lotus-5vm8" nodeid="1">
<fence>
<method name="pcmk-redirect">
<device name="pcmk" port="lotus-5vm8"/>
</method>
</fence>
<altname name="lotus-5vm8-ring1"/>
</clusternode>
</clusternodes>
<cman/>
<fencedevices>
<fencedevice agent="fence_pcmk" name="pcmk"/>
</fencedevices>
<rm>
<failoverdomains/>
<resources/>
</rm>
</cluster>
# corosync-objctl | grep ring
totem.interface.ringnumber=0
So is there something I am misunderstanding or is this not actually
working? The node I was trying this on is EL6.4.
Cheers,
b.
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