perfSONAR User Q&A and Other Discussion

[Shawn McKee <>]

Hi Ivan,

I noticed 2 things about your host:

1) It only has 2GB of RAM but for v3.4 the minimum recommended is 4GB.  This can cause problems, especially if you have more than a few tests ongoing.

2) Your host is not NTP synced right now.  

See http://psmp-tst-02.dub.ie.geant.net/toolkit/   or http://psmp-tst-02.dub.ie.geant.net/toolkit/?format=json

Shawn

On Mon, Jul 13, 2015 at 10:08 AM, Garnizov, Ivan (RRZE) <> wrote:

Hi guys, Andy,

 

The problem persists.

I have made more diagnostic tests.

First of all I decided to see if something prevents the powstream to operate, so I sniffed traffic and I believe the communication between the test hosts is good.

Then I decided to revert the changes, so….we restored from a snapshot. This time I have disabled our Puppet, just to make sure the system is untouched after the upgrade.

I have also let the old version play for a while. It worked fine and measurements are even recorded.

This time I also captured the process of the upgrade.

 

Now with Puppet disabled, with /var/lib /perfsonar/regular_testing/* cleaned up…..the problem persists.

I am able to run tests on the command line, but the error bellow continuously reappears to the log, while the service obviously is able to create and manage the folders stated:

 

2015/07/13 14:36:20 (62500) ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_BBjps -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t ps-test.ctc.grnoc.iu.edu

2015/07/13 14:36:20 (62500) ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_Te8FR -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t perfsonar-dev5.grnoc.iu.edu

2015/07/13 14:36:20 (62500) ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_2JYwP -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t ps-deb.es.net

2015/07/13 14:36:20 (62500) ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_R4S6A -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t antg-dev.es.net

2015/07/13 14:36:20 (62500) ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_KmjKF -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t perfsonardev0.internet2.edu

2015/07/13 14:36:20 (62500) ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_v8K1j -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t ma-dev2.bldc.grnoc.iu.edu

 

 

There are some warnings from the upgrade process:

 

warning: /etc/cassandra/default.conf/cassandra-env.sh created as /etc/cassandra/default.conf/cassandra-env.sh.rpmnew

warning: /opt/esmond/esmond.conf created as /opt/esmond/esmond.conf.rpmnew

warning: /opt/esmond/esmond/settings.py created as /opt/esmond/esmond/settings.py.rpmnew

New python executable in ./bin/python

Installing Setuptools.............................................................................................done.

Installing Pip....................................................................................................................................done.

Creating tables ...

Creating table ps_networkelement_subject

Creating table useripaddress

Installing custom SQL ...

Installing indexes ...

Installed 0 object(s) from 0 fixture(s)

 

 

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/add_dbxml_path upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/add_sbin_path upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/add_toolkit_dirs_path upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/bwctl_port_verify upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_bwctld_log_location upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_esmond upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

New python executable in ./bin/python

Installing Setuptools.............................................................................................done.

Installing Pip....................................................................................................................................done.

Creating tables ...

Installing custom SQL ...

Installing indexes ...

Installed 0 object(s) from 0 fixture(s)

User perfsonar exists

Setting timeseries permissions.

User perfsonar already has api key, skipping creation

Key: ------------------------------------- for perfsonar

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_fail2ban upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_firewall upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Adding perfSONAR firewall rules

iptables: Saving firewall rules to /etc/sysconfig/iptables: [  OK  ]

ip6tables: Saving firewall rules to /etc/sysconfig/ip6tables: [  OK  ]

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_ntpd upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_regular_testing upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

New python executable in ./bin/python

Installing Setuptools.............................................................................................done.

Installing Pip....................................................................................................................................done.

Creating tables ...

Installing custom SQL ...

Installing indexes ...

Installed 0 object(s) from 0 fixture(s)

User perfsonar exists

Setting timeseries permissions.

User perfsonar already has api key, skipping creation

Key: ----------------------------------------------- for perfsonar

No tests to upgrade

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_sysctl upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/configure_syslog_local5_location upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/disable_http_trace upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/disable_mysql_network_access upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/disable_php_advertising upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/disable_unwanted_services upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/disable_weak_ssl_ciphers upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/disable_zeroconf upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_apache_redirect upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_auto_updates upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_mysqld upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_nscd upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_ntpd upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_web100_kernel_repository upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/enable_wheel_sudo upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/increase_owamp_limits upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/increase_owamp_port_range upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

Running: /opt/perfsonar_ps/toolkit/scripts/system_environment/upgrade_apache upgrade 3.4.1 1.pSPS 3.4.2 13.pSPS

 

 

Best regards,

Ivan

 

From: Shawn McKee [mailto:]
Sent: Freitag, 10. Juli 2015 16:31
To: Garnizov, Ivan (RRZE)
Cc:
Subject: Re: [perfsonar-user] perfSonar - Internal Server Error

 

Hi Ivan,

There was a problem we have seen in 3.4.1 where old test results weren't cleaned up.

 

What does this command show?

 

du -hs /var/lib/perfsonar/regular_testing

 

(How much is there?)

 

If there is more than about 15 MB you may want to clean it up and reboot:

 

rm -rf /var/lib/perfsonar/regular_testing/*

reboot

 

Shawn

 

On Fri, Jul 10, 2015 at 10:25 AM, Garnizov, Ivan (RRZE) <> wrote:

Dear perfSONAR developers,

 

I have a strange case where a system that had been upgraded from 3.4.1 to 3.4.2 started experiencing errors on scheduled tests (regular_testing).

 

I have tried restarting the service, stopping /starting the service with killing all the powstream and bwctl processes, finally I restarted the server…but the problem persists.

 

ERROR> CmdRunner.pm:148 perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Command exited, will restart in 278 seconds : /usr/bin/powstream -4 -p -d /var/lib/perfsonar/regular_testing/owamp_sKeW0 -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t ma-dev2.bldc.grnoc.iu.edu

 

I am applying logs, current state of folder permissions and regular_testing.conf

 

There are logs from previous state when it was OK and the state after the upgrade.

 

Manual tests after the upgrade are successful:

[dfn.garnizov@test-rhps02 ~]$ owping -c 300 -i 0.01 -S psmp-tst-02.dub.ie.geant.net -t ps-test.ctc.grnoc.iu.edu

Approximately 6.8 seconds until results available

 

--- owping statistics from [psmp-tst-02.dub.ie.geant.net]:8847 to [ps-test.ctc.grnoc.iu.edu]:9334 ---

SID:    8cb62c5cd94a3e09053202dc3daf03e1

first:  2015-07-10T12:50:18.423

last:   2015-07-10T12:50:21.388

300 sent, 0 lost (0.000%), 0 duplicates

one-way delay min/median/max = 51.6/51.9/52.2 ms, (err=11.9 ms)

one-way jitter = 0.2 ms (P95-P50)

Hops = 9 (consistently)

no reordering

 

 

Best regards,

Ivan

 

 

 

 

From: [mailto:] On Behalf Of Szymon Trocha
Sent: Freitag, 10. Juli 2015 08:21
To: Manglos, Andrew P (173E)
Cc:
Subject: Re: [perfsonar-user] perfSonar - Internal Server Error

 

W dniu 2015-07-10 o 01:29, Manglos, Andrew P (173E) pisze:

Hello,

 

I’m getting an Internal Server Error 500 when trying to web to a perfSonar box. I looked at the error log and see:

 

[Thu Jul 09 19:25:03 2015] [error] [client 137.78.171.89] (13)Permission denied: exec of '/opt/perfsonar_ps/toolkit/web/root/index.cgi' failed

[Thu Jul 09 19:25:03 2015] [error] [client 137.78.171.89] Premature end of script headers: index.cgi

 

I check permissions on the file:

 

lrwxrwxrwx. 1 perfsonar perfsonar 22 Jul  9 19:10 /opt/perfsonar_ps/toolkit/web/root/index.cgi -> gui/services/index.cgi

 

and the file that points to:

 

 

-rwxr-xr-x. 1 perfsonar perfsonar 9892 Jun 22 15:06 /opt/perfsonar_ps/toolkit/web/root/gui/services/index.cgi

 

 

Can anyone tell me what is wrong? Or lead me in the correct direction?

Hi Andrew,

Is your behaviour similar to http://www.perfsonar.net/about/faq/#Q82 ?
If yes, check the SELinux settings in /etc/sysconfig/selinux. If it is set to enforcing, consider setting to permissive and rebooting.
If not helping let us know with more details from Apache log.

Regards,

-- 

Szymon Trocha

Poznań Supercomputing & Netw. Center ::: NETWORK OPERATION CENTER

Tel. +48 618582022 ::: http://noc.man.poznan.pl