Entironment:A rp8400 with two parition is configured MC/SG in a cluster. I ping the heardbeat ip address and don't receive the echo package.But I press the command "cmruncl -v" ,two node both run.I think that they should not start because there is a communication failure of heartbeat between the nodes.Why they can run normally? Thanks Weit
How to you ping the lan interface? The heardbeat packages are send on layer 2 and you have to ping them with "linkloop" command. To check your MC/SG environment please use the "cmscancl" command, that creates a output with a lot of informations, also about your network.
# cmscancl >/tmp/cmscancl.out # more /tmp/cmscancl.out
Looking at your cluster.ascii file, you have the heartbeat going out on bothy lan cards, so even if the dedicated heartbeat lan does not work, a heartbeat is still getting through on the data lan.
in the following you can see that the lan connection between your nodes works fine on layer 2 (DLPI):
###### Checking REMOTE network connections (ssokeysb to ssokeysa) ######
------ lan0 on node ssokeysb to lan0 on node ssokeysa ------ PPA 0 link test to 0x00306E0AC052 -- OK
------ lan0 on node ssokeysb to lan1 on node ssokeysa ------ PPA 0 link test to 0x00306E21B56F (NO CONNECTION)
------ lan0 on node ssokeysb to lan2 on node ssokeysa ------ PPA 0 link test to 0x00306E21D516 -- OK
------ lan1 on node ssokeysb to lan0 on node ssokeysa ------ PPA 1 link test to 0x00306E0AC052 (NO CONNECTION)
------ lan1 on node ssokeysb to lan1 on node ssokeysa ------ PPA 1 link test to 0x00306E21B56F (NO CONNECTION)
------ lan1 on node ssokeysb to lan2 on node ssokeysa ------ PPA 1 link test to 0x00306E21D516 (NO CONNECTION)
------ lan2 on node ssokeysb to lan0 on node ssokeysa ------ PPA 2 link test to 0x00306E0AC052 -- OK
------ lan2 on node ssokeysb to lan1 on node ssokeysa ------ PPA 2 link test to 0x00306E21B56F (NO CONNECTION)
------ lan2 on node ssokeysb to lan2 on node ssokeysa ------ PPA 2 link test to 0x00306E21D516 -- OK
So if you are not able to ping (layer 3) between the nodes, please check the config of your switch/router/bridge between the nodes, if layer 3 (IP) is open.
In my mind and in view of MC/SG all works fine. MC/SG only check the lan on layer 2 and that seam to be ok.
Can I explain that I have the heartbeat going out the both lan cards(lan0,lan1)?Lan 1 is dedicated heartbeat lan.If the lan1 is down,the heartbeat message can pass through the lan0.So the cluster can also run normally. You can see the ssokeysa's lan1 to ssokeysb don't connect. Thanks all of your help.I love this forum!:)
If on one node lan0 fails the heartbeat only go by lan1, for MC/SG no problem. DLPI pings can only work in the same physical network, so only lan0 to lan0 and lan1 to lan1.
------ lan0 on node ssokeysb to lan0 on node ssokeysa ------ PPA 0 link test to 0x00306E0AC052 -- OK
lan0 seams to be fine!!!
------ lan1 on node ssokeysb to lan1 on node ssokeysa ------ PPA 1 link test to 0x00306E21B56F (NO CONNECTION)
lan1 seams to be broken connection.
But like I'd said,if one of both heartbeat connections is working fine, MC/SG will start and protect your datas by corruption.
