Re: Active but Unusable RMC Connections

Jim,

On Tue, Apr 23, 2019 at 08:45:51AM -0500, Jim Oberholtzer wrote:

The RMC connection is very important and will cause a series of small
hideous problems that are really hard to figure out until that is resolved.

That's encouraging.

Without VIOS then trouble resolution is nearly impossible.

We just have i hosting i, no VIOS.

If at some time you have to stop/restart the managed system, you will
likely have issues bringing up the partitions.

I'm glad you mentioned that. I was wondering if IPLing the LPARs and/or
power cycling the POWER 8 itself might help. It sounds like it would do
more harm than good.

From a netstat on the HMC:

netstat -tulpn | grep 657
(No info could be read for "-p": geteuid()=1010 but you should be root.)
tcp6 0 0 :::657 :::* LISTEN -
udp6 0 0 :::657 :::* -

It looks like it's only listening for RMC connections on IPV6. I think our
LPARs are IPV4 only. A netstat on one of the LPARs shows it's only
listening for RMC connections on IPV4, and the LPAR IP addresses listed by
lspartition -dlpar on the HMC are all IPV4 addresses. If the HMC isn't
listening for RMC connections on IPV4, does anyone know where I can change
that? The other question would be why it suddenly stopped listening for
IPV4 connections.