remote procedure calls

[steven Burgess_2]

Hi

Can anyone tell me at what version service guard started to use remote procedure calls, or as have they always been used ?

Regards

Steve

[Todd Whitcher · Accepted solution]

Hi Steven,

Are you talking about rpc(rpcinfo) type procedure calls or rpcd/dce type programs? The rpc calls/replies are a part of the HA NFS toolkit nfs.mon template used to monitor the programs NFS uses. It's been around for some time, going back to 10.01 versions of Servicegaurd. I believe HA-NFS toolkit was released around 1995 for SG.

SG has also supported DCE/RPCD type packages for a long time now, I'm not sure of the dates for that.

Does that help?

Todd

[steven Burgess_2]

Hi Todd

Essentially during the usage of cmapplyconf etc and the use of cmclnodelist

Steve

[Todd Whitcher]

Hi Steve,

I ran a nettl trace and did a

"cmapplyconf -C cluster.ascii"

on one of my SG test clusters and I dont see any rpc procedure calls or replies in the output. I am using the cmclnodelist file also.

I have not heard of rpc procedure calls in the commands for SG, except with the HA-NFS toolkit.

Whats the format of the cmapplyconf your using? Are you including a package that may need to use rpc procedure calls?

cmclnodelist is just a replacement for the .rhosts files that had to be used in previous versions of SG, should not be a rpc procedure going on when that file is verified.

Are you seeing this in a network trace?

Todd

[steven Burgess_2]

Oh right

I understood cmclnodelist was a replacement for .rhosts, I was under the impression the method of distributing files was done using an rpc for increased security

Steve

[Todd Whitcher]

Hi Steve,

The SG application is distributing the data via the various HACL ports.

hacl-hb 5300/tcp # High Availability (HA) Cluster heartbeat
hacl-gs 5301/tcp # HA Cluster General Services
hacl-cfg 5302/tcp # HA Cluster TCP configuration
hacl-cfg 5302/udp # HA Cluster UDP configuration
hacl-probe 5303/tcp # HA Cluster TCP probe
hacl-probe 5303/udp # HA Cluster UDP probe
hacl-local 5304/tcp # HA Cluster Commands
hacl-test 5305/tcp # HA Cluster Test
hacl-dlm 5408/tcp # HA Cluster distributed lock manager

What I did to see whats going on is a quick nettl trace.

#nettl -tn pduin pduout -e ns_ls_ip -f trace

Ran a cmapplyconf

# nettl -tf -e all

Reviewed the output

# netfmt -1TNnlf trace.TRCXXX > trace.out

Thats a oneliner format, you can do a full format if you want and you can create filters for IP's or protocols, see man netfmt for details.

ex. to filter out rpc trafic.
cat /tmp/filter_file
filter rpcdirection call
filter rpcdirection reply

# netfmt -Nnlf trace.TRCXXX -c filter > trace.out

In my case doing this created a 0 length output file, which indicated no rpc trafic.

So I reviewed the one-liner and see hacl type communication.

You can also review nettl traces w/ the ethereal tool (www.ethereal.com) which is a little more user friendly than netfmt and can be run on your PC or hpux.

Hope that helps.

Todd

[steven Burgess_2]

Thanks Todd

I should have looked at /etc/services (doh !). Have had plenty of exposure to nettl in the past, should have thought about that as well

thanks for your help

Steve

[Todd Whitcher]

Glad I was able to add some pointers to the information for you.

Cheers

Todd

[steven Burgess_2]

thanks