Non- uniform connection detected when running cmquerycl or cmccheckconf

[Nguyen Anh Tien]

Last Saturday I failed in deleting and adding a node while cluster was running.
My cluster contains 4 nodes ( node1, node 2, node3 ,node4) there are 2 package running on this cluster (package1, package2) 2 package is able to adopt to 3 other nodes.(node1 is orginal node)
Now I replace node2 by other server( have better configuration). I did as following:
1. modify package1, package2 conf.
NODE_NAME node1
#NODE_NAME node2
NODE_NAME node3
NODE_NAME node4
2. cmcheckconf â v â P package1.conf
3. cmcheckconf â v â P package1.conf
4. cmapplyconf â v â P package1.conf
5. 2. cmapplyconf â v â P package1.conf
And then.
Cmquerycl â v â C /etc/cmcluster/03nodes.conf â c CLUSTER_NAME â n node1 â n node3 â n node4.
At this step it return error.

Begin checking the nodes...
Looking for nodes in cluster VBARD ... Done
Gathering configuration information ............. Done
Warning: The disk at /dev/dsk/c3t2d0 on node node1 does not have an ID, or a disk label.
Warning: The disk at /dev/dsk/c3t2d0 on node node3 does not have an ID, or a disk label.
Warning: The disk at /dev/dsk/c3t2d0 on node node4 does not have an ID, or a disk label.
Warning: The disk at /dev/dsk/c3t2d0 on node node2 does not have an ID, or a disk label.
Warning: Disks which do not have IDs cannot be included in the topology description.
Use pvcreate(1M) to initialize a disk for LVM or,
use vxdiskadm(1M) to initialize a disk for VxVM.
node3 lan3 successfully received from node3 lan2
but node3 lan2 did not receive from node3 lan3.
This is probably due to heavy network traffic or heavy load on node3.
Error: Non-uniform connections detected,
node3 lan1 successfully received from node3 lan2
but node3 lan2 did not receive from node3 lan1.
This is probably due to heavy network traffic or heavy load on node3.
Error: Non-uniform connections detected,
node3 lan3 successfully received from node3 lan4
but node3 lan4 did not receive from node3 lan3.
This is probably due to heavy network traffic or heavy load on node3.
This is probably due to heavy network traffic or heavy load on node4.
Error: Non-uniform connections detected,
node4 lan1 successfully received from node4 lan0
but node4 lan0 did not receive from node4 lan1.
This is probably due to heavy network traffic or heavy load on node4.
Error: Non-uniform connections detected,
node4 lan3 successfully received from node4 lan2
but node4 lan2 did not receive from node4 lan3.
This is probably due to heavy network traffic or heavy load on node4.
Error: Non-uniform connections detected,
node4 lan1 successfully received from node4

I had searched solution on forum.itrc.hp.com. there are some similar case but solution is not correct.
I am using MC-SG version 11.14. HP-UX 11i.
I attached cmscancl result for reference.
I had checked and found:
- no conflic IP on cluster
- No conflic MAC on cluster.
- al

[melvyn burnard]

This is telling you that you have networking configuration issues.
This may be defective cables, but may also be something to do with your switches/hubs.
Also make sure you have the latest patch for SG 11.14 PHSS_31065

[Nguyen Anh Tien]

Dear melvyn burnard.
I had patched PHSS_31065. But problem was still exits.
Now I intend to do like the following:
1. Backup cluster and package config file (binary+ascii file)
2. replace node2 by new server.
change IP, hostname as node2, import vg
3. Copy all config file to new server.
4.start cluster.
5. switch 02 packages to new server
is it possible to do???
does MC-SG run base on MAC address?

[melvyn burnard · Accepted solution]

your proposed plan will not work, as the SG binary contains the paths and MAC addreses of the various lan cards used.
You will need to add the new node in and then delete the unwamted node, or delete the node then add in the new node as per the Managing Serviceguard manual.

[Stephen Doud]

If you have access to the knowledge database, check this document: UMCSGKBRC00009261
Title: FIXES for "Non-uniform connections detected" by cmcheckconf, cmapplyconf

-SD

[Nguyen Anh Tien]

Dear Stephen, Can you show me the URL of the document you said (UMCSGKBRC00009261). I will check all ideas and assign point later.
Thank gurus
tienna