IFront Monitoring

Basic idea from MCAS:

• central archive of monitoring data
• dynamic web-2.0 web display of monitored data

But with some changes

• standard toolset (rrdtool)
• standardized access to data
• reusable javascript parts

Use

Several web access points (so far) for use:

• web_rrdtool.cgi -- backend for web_rrdtool.sh script, which lets you run rrd command lines remotely
• file_in_rrd.cgi -- easily used from curl to post values to files from a script -- hides all the rrdtool ugliness
• xmldir.cgi -- gets you xml listing of directories
• xlminfo.cgi -- gets you xml list of values in an rrd file useful for AJAX-ish web code.
• Browser -- uses above parts to let you examine monitoring data.

Using web_rrdtool.cgi

• Can call with wget or curl, with & between arguments
• calls web_rrdtool.cgi on remote host
• adds "do_graph" which makes up a graph filename,and sends the graph as the response (useful for web pages)

Using file_in_rrd

    curl --data "rrdfile=plugstrip/s31" \
         --data "time=N" \
         --data "temp=30" \
         --data "load=15" \
         http://ifmongpvm01.fnal.gov:8000/cgi-bin/maaws/file_in_rrd

Javascript parts

• ifmon.dir( div_id, directory ) -- shows directory listing
• ifmon.rrdinfo( div_id, filename) -- makes a form to let you choose data to graph from rrd file.
• ifmon.get( url , callback) -- basic AJAX fetch wrapper.
• ifmon.daterange(days) -- switch graph image URL's to range

Making Dashboards

• use the Browser to find interesting graph URLs
• paste them into a Dashboard Template
• Watch as needed
• Example: batch info

Status

• Have prototype repostory up on ifmongpvm01
• Prototype "slurpers" for:
  • condor
  • cpn
  • snmp hosts
  • df data
• Soon: CAF-mon style web page area for batch
• Soon: custom job status info