perfSONAR User Q&A and Other Discussion

[Andrew Lake <>]

Hi,

Looks like a bug, I filed an issue here: https://github.com/perfsonar/mesh-config/issues/67

You can get around this by changing the type “star” to “disjoint”, “center_address” to “a_member” and “member” to “b_member”. Under the hood it gets converted to disjoint anyways, so it will have the exact same effect. Using the example you shared, it would look like the following:

<group all_ping_star>

   type              disjoint

   a_member    perf-1-delay.r.org

 

   # This should list ALL sensor nodes not used for bandwidth testing.

 ####  b_member            perfbox-6.r.org

 ####  b_member            perfbox-p6.r.org

 ####  b_member            perfbox-p7.r.org

   b_member            perfbox-2.r.org

   b_member            perfbox-3.r.org

   b_member            perf-4-delay.r.org

   b_member            1.2.3.4

   b_member            perf-5-delay.r.org

   b_member            perf-6-delay.r.org

</group>

 

 <group cdn_latency_star>

   type              disjoint

   a_member    4.5.6.7

   # This should list all BDF sensor nodes.

   b_member            perfbox-p6.r.org

   b_member            perfbox-p7.r.org

 </group>

Thanks,

Andy

On May 9, 2017 at 8:57:44 AM, Hyojoon Kim () wrote:

Hello, 

I see periodic error messages (seems every 1 hour) in the MaDDash log file, "/var/log/maddash/meshconfig-guiagent.log”. Could someone help me understand these errors so that I can fix it? 

==

2017/04/17 19:10:58 (8650) ERROR> GUIAgent.pm:258 perfSONAR_PS::MeshConfig::GUIAgent::__generate_maddash_config - Problem generating maddash configuration: Can't locate object method "center_address" via package "perfSONAR_PS::MeshConfig::Config::Group::Disjoint" at /usr/lib/perfsonar/bin/../lib/perfSONAR_PS/MeshConfig/Generators/MaDDash.pm line 241.

2017/04/17 19:10:58 (8650) ERROR> GUIAgent.pm:219 perfSONAR_PS::MeshConfig::GUIAgent::__configure_guis - Problem generating maddash configuration: Problem generating maddash configuration: Can't locate object method "center_address" via package "perfSONAR_PS::MeshConfig::Config::Group::Disjoint" at /usr/lib/perfsonar/bin/../lib/perfSONAR_PS/MeshConfig/Generators/MaDDash.pm line 241.

==

Code snippet from "/usr/lib/perfsonar/lib/perfSONAR_PS/MeshConfig/Generators/MaDDash.pm” is:

 239             my $columnAlgorithm = "all";

 240             if ($test->members->type eq "star") {

 241                 $test->members->center_address(__normalize_addr($test->members->center_address));

 242                 push @row_members, $test->members->center_address;

 243                 foreach my $member (@{__normalize_addrs($test->members->members)}) {

 244                     push @column_members, $member unless $member eq $test->members->center_address;

 245                 }

 246 

 247                 $column_id = __generate_yaml_key($grid_name)."-column";

 248                 $row_id = __generate_yaml_key($grid_name)."-row";

 249             }

In my mesh.conf file, I see following config lines that have “center_address” in it. I’ve redacted the addresses and hostnames. All “center_address” hosts (perf-1-delay.r.org, 4.5.6.7) are defined in the <organization> -> <site> -> <host> directives.

433 <group all_ping_star>

434   type              star

435   center_address    perf-1-delay.r.org

436 

437   # This should list ALL sensor nodes not used for bandwidth testing.

438 ####  member            perfbox-6.r.org

439 ####  member            perfbox-p6.r.org

440 ####  member            perfbox-p7.r.org

441   member            perfbox-2.r.org

442   member            perfbox-3.r.org

443   member            perf-4-delay.r.org

444   member            1.2.3.4

445   member            perf-5-delay.r.org

446   member            perf-6-delay.r.org

447 </group>

448 

449 

450 <group cdn_latency_star>

451   type              star

452   center_address    4.5.6.7

453 

454   # This should list all BDF sensor nodes.

455   member            perfbox-p6.r.org

456   member            perfbox-p7.r.org

457 </group>

Thanks,

Joon