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Is it time to start paring down the list of PingER monitor hosts in Pakistan, starting with those that have been down for a while and despite your efforts they are not cooperating. One might also look at the coverage by region in Pakistan and try and keep good coverage for all regions.
PingER at SLAC
Thiago has Bebo, Thiago & Les met to go over possible projects for Thiago.
- Extend the work done by Renan to provide open analysis using Linked Open Data of PingER data. Part of this would be to publish and provide querying of PingER data through linkdata.org. A major requirement for this is a Hadoop cluster. Les will investigate. This may be a block.Configure a Raspberry Pi as a PingER monitor. Look at reliability and compare with a regular PingER monitor. Bebo Provided a Raspberry, Les has provided a SD drive.
- Thiago is looking at Impala, Les will see if we have access to a Hadoop cluster.
- Thiago and Renan have scheduled a Skype meeting to discuss ways forward.
modified ping_data_plot.pl and frequency.pl to provide much improved GUI for the plots. This has been very useful for plotting the differences between pinger.slac.stanford.edu and pinger-raspberry.slac.stanford.edu. See ePinger Project at SLAC which we are putting together.
The Raspberry Pi at SLAC has been running smoothly since June 11th. We have power cycled it a few times to ensure it works across power outages. It is also accessible from ssh.
We have a 4 host cloud with~16Gbytes each, plus access to 220Gbytes each, Thiago is working with SLAC system people to set it up. Thiago is also working with Renan to configure things to use Hadoop and ImpalaWe have put together a case study on the impact of the Nepalese earthquakes on the Internet connectivity, see Nepal Earthquake 2015. It is interesting that the connectivity continued for an hour or so after the shock wave. Caltech points out that this could be important for projects measuring the impact of the initial shockwave.
Working on the following hosts to be able to gather data (Bold face = change since last meeting, green background fixed, red background = disabled, strike through completed at a previous meeting):face = change since last meeting, green background fixed, red background = disabled, strike through completed at a previous meeting):
| Host | State | last seen | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|
| web.hepgrid.uerj.edu | emails 12/2/2014, 12/8/2014, 2/26 | ||||||||
| Host | State | last seen | Status | ||||||
| web.hepgrid.uerj.edu | emails 12/2/2014, 12/8/2014, 2/26/2015, 4/30/2015, 6/1/2015 | Oct 23, 2014 | traceroute.pl works but no response from ping_data.pl | ||||||
| pinger.stanford.edu | email 3/14/2015 | Feb 18, 2015 | Works | ||||||
| /2015, 4/30/2015 | . Moved to VM with new name pinger-host.fnal.gov, enabled ICMP request/ response and port 80, works 5/19/2015., 6/1/2015 | Oct 23, 2014 | traceroute.pl works but no response from ping_data.pl | ||||||
| pinger.stanford.edu | email 3/14/2015 | Feb 18, 2015 | Works | ||||||
| pinger.unesp.br | email 11/28/2014, 5/22/2015, 6/1/2015. | Nov 3, 2014 | Host is pingable from SLAC. | ||||||
| pinger.fsktm.um.edu.my | email May 29th, June 6th, host in need of maintenance, Anjum may be able to assist. | May 24th | Host not pingable | ||||||
| pingersonar-um.myren.net.my | May 31st | Host not pingable |
Bebo arranged a meeting with the Colombia RENATA NREN folks and the minister of IT to discuss the use of PingER in Colombia. There is a web page at: Colombia. Les has sent an email asking them to install pinger2.pl at at least one site in Columbia. Sent a reminder email 2/27/2015. Bebo will send a gentle reminder to the RENATA people of Columbia to see whether they continue to be interested and need a meeting.
Next meeting
Next meeting: Wednesday July 1st August 5th 2015 9:00pm Pacific Standard Time, Thursday July 2nd JAugust 6th 2015 9:00am Pakistan time, Thursday July 2nd August 6th 2015 noon Malaysian time, Thursday July 2n3 Thuirsday August 6th, , 2015 02:00am Rio Standard Time.
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