perfSONAR User Q&A and Other Discussion

[Sowmya Balasubramanian <>]

Hi Andrew,

Your understanding of how nodes get registered is correct. 

If you don't want to register private nodes in the global lookup service, you can stop the ls_registration_deamon and may the bootstrap daemon also(since bootstrap is used only by the ls_registration_daemon). Hosts that were already registered will go away in couple of hours.

The cache daemon doesn't really affect the registration process. So, turning this off is optional.

And, if you would like a "no update" option, you can request this feature by creating a request here: https://code.google.com/p/perfsonar-ps/issues/list.

Hope this helps!

Thanks,

Sowmya

On Wed, May 21, 2014 at 2:25 PM, Andrew Grabowski <> wrote:

Hi all,

Anyone have any experience with tweaking or disabling the global lookup service. I am interested in having some private perfsonar nodes not show up in the global catalog (Global Performance Services) if possible. 

So far I was able to deduct the lookup service logic as follows:

How PSONAR nodes send their configs/updates to central ES.NET catalog... Send on port 8090

1. Lookup service uses "SimpleLSBootStrapClientDaemon.conf"

/opt/SimpleLS/bootstrap/etc/SimpleLSBootStrapClientDaemon.conf

This file has the updates interval.. but *no* option to not update... (Maybe update_interval set to 0??

This file points to the:

2. /opt/SimpleLS/bootstrap/etc/hosts-client.yml

The hosts-client.yml has a configured value of "- locator: "http://ps1.es.net:8096/lookup/activehosts.json"";

3. The activehosts.json lists update servers....

*Note - Node configurations seem to be taken from:

"/opt/perfsonar_ps/ls_registration_daemon/etc/ls_registration_daemon.conf"

How PSONAR nodes retrieve Global Services catalog... Get on port 8096

1. /opt/perfsonar_ps/ls_cache_daemon/etc/ls_cache_daemon.conf

2. hints_file  http://www.perfsonar.net/ls.cache.hints

3. The hints file lists servers which have updated catalog

4. Catalog is download every 8 hrs or per configuration in:

/opt/SimpleLS/bootstrap/etc/SimpleLSBootStrapClientDaemon.conf

Are my assumptions of the process correct? Is there a sure way to tweak or stop this?

I am thinking stopping the following services:

/etc/init.d/ls_registration_daemon stop /etc/init.d/ls_cache_daemon stop /etc/init.d/simple_ls_bootstrap_client stop

Removing them from chkconfig... And tweaking the above configuration files (notably SimpleLSBootStrapClientDaemon.conf) would stop this.. Anyone have any experience?

Thank you,

Andrew Grabowski