ServiceGuard Network Configuration

[Dima Kouznetsov]

Hello,

I am getting this error message on
# cmcheckconf -v -C clus.conf
...
...
Gathering network information
Beginning network probing (this may take a while)
Completed network probing
Gathering polling target information
Node vguest1 did not receive an ICMP REPLY message on 10.87.223.153
from the polling target 10.87.223.1
Node vguest2 did not receive an ICMP REPLY message on 10.87.223.152
from the polling target 10.87.223.1
Failed to evaluate polling targets
cmcheckconf: Unable to reconcile configuration file clus.conf
with discovered configuration information.


I have a two node cluster running on two HP IVM Guests, both running 11.31.0909. I am setting up Oracle RAC on this configuration. Following the instructions that I have, I was told that I need to have a public IP (aside from the host IP) which will be used as a virtual IP, and a private IP for the heartbeat.

So here is how my network is setup right now:
On the IVM Host, I have 3 virtual switches. 2 are connected to physical NICs and the third is localnet, which is used for the private IP. Each IVM Guest is assigned those 3 virtual switches (so I have 3 IPs on each Guest).
The two public IPs (host IP and one to be used for virtual IP) are assigned IP address, but they are on the same subnet. I read somewhere that they have to be on different subnets, is that true? If so, can I get around this without having an IP address assigned on another subnet? Perhaps using a VLAN or something of the sort?

Also, looking at the error message, I was able to ping the polling target on each guest from that interface:
ping -i 10.87.223.152 10.87.223.1
PING 10.87.223.1: 64 byte packets
64 bytes from 10.87.223.1: icmp_seq=0. time=0. ms
64 bytes from 10.87.223.1: icmp_seq=1. time=0. ms

----10.87.223.1 PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/0/0

ping -i 10.87.223.153 10.87.223.1
PING 10.87.223.1: 64 byte packets
64 bytes from 10.87.223.1: icmp_seq=0. time=0. ms
64 bytes from 10.87.223.1: icmp_seq=1. time=1. ms

----10.87.223.1 PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/1/1

Not sure if thats the same thing that cmcheckconf is doing however.

Thanks for the help!
Dima

[Dima Kouznetsov]

So basically my question is, are the IPs for the host and the virtual IP allowed to be on the same subnet? If not, what other options do I have to configure this (assuming I cannot get an IP on another subnet)? Is that what is causing the error message...?

Dima

[Emil Velez]

unless you are using APA IPs on different lan cards must be on different subnets.

[Dima Kouznetsov]

So from what I read about APA, it takes two NICs and combines then into one for redundancy, but then you can create aggregate IPs on it.

I am a little confused by what you mean that the APA IPs need to be on different lan cards. Could you please elaborate?

On my HPVM Guests, I have 3 NICs, 2 connected to 2 different LAN cards, and 1 that is the private interface. So would I have something like this:
lan900(LACP_AUTO) = lan0 + lan1
And then create lan900:0 and lan900:1 with the IP addresses (on the same subnet)?
Where lan900:0 is the guest IP and lan900:1 is the virtual IP for serviceguard.

Not sure if this makes sense, please advise.

Thanks,
Dima