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Introduction

This page describes how the MRTG monitoring for the WLCG Squids is configured and how to make changes.

Setup

Cron jobs:

As squidmon user:

% crontab -l
# Updating of GOCDB and OIM squid records
40 */3 * * * [ "`cl_status rscstatus`" == "all" ] || exit; /home/squidmon/scripts/grid-services/get_squids.py >> /home/squidmon/logs/get_grid_squids.log 2>&1
44 */3 * * * [ "`cl_status rscstatus`" == "all" ] || exit; /home/squidmon/scripts/all/makeConfig.py >> /home/squidmon/logs/all/makeConfig.log 2>&1

# Updating MRTG monitoring that uses GOCDB and OIM records
*/5 * * * * [ "`cl_status rscstatus`" == "all" ] || exit; /home/squidmon/scripts/all/mrtg_plots.py >> /home/squidmon/logs/all/mrtg_plots.log 2>&1

Retrieving information from GOCDB

A cron job run every 3 hours:

40 */3 * * * [ "`cl_status rscstatus`" == "all" ] || exit; /home/squidmon/scripts/grid-services/get_squids.py >> /home/squidmon/logs/get_grid_squids.log 2>&1

This creates a file called /home/squidmon/www/grid-squids.json which contains the information stored in the GOCDB and OIM about the squids:

% head /home/squidmon/www/grid-squids.json
{
  "cvmfs-px4.cr.cnaf.infn.it": {
    "source": "egi", 
    "name": "INFN-T1", 
    "port": 3401
  }, 
  "squid1.ppgrid1.rhul.ac.uk": {
    "source": "egi", 
    "name": "UKI-LT2-RHUL", 
    "port": 3401 

Creating config files

A cron job run every 3 hours and 4 minutes after the information has been updated from the GOCDB/OIM:

44 */3 * * * [ "`cl_status rscstatus`" == "all" ] || exit; /home/squidmon/scripts/all/makeConfig.py >> /home/squidmon/logs/all/makeConfig.log 2>&1

This creates the .cfg files and puts them in:

% ls /home/squidmon/etc/all/
ANLASC-squid.cfg       Australia-ATLAS_1.cfg  CA-VICTORIA-WESTGRID-T2.cfg  DukeT3_SQUID.cfg  GRIF.cfg        INDIACMS-TIFR.cfg  JINR-T1.cfg            NGI_IT.cfg      RAL-LCG2_1.cfg  RWTH-Aachen.cfg    SARA-MATRIX_1.cfg  SBU_T3_Squid.cfg
ANLASC-squid.ok        Australia-ATLAS_1.ok   CA-VICTORIA-WESTGRID-T2.ok   DukeT3_SQUID.ok   GRIF.ok         INDIACMS-TIFR.ok   JINR-T1.ok             NGI_IT.ok       RAL-LCG2_1.ok   RWTH-Aachen.ok     SARA-MATRIX_1.ok   SBU_T3_Squid.ok
Australia-ATLAS_0.cfg  Australia-ATLAS.cfg    DESY-ZN.cfg                  FMPhI-UNIBA.cfg   IN2P3-LAPP.cfg  JINR-LCG2.cfg      Nevis_cvmfs_squid.cfg  RAL-LCG2_0.cfg  RAL-LCG2.cfg    SARA-MATRIX_0.cfg  SARA-MATRIX.cfg
Australia-ATLAS_0.ok   Australia-ATLAS.ok     DESY-ZN.ok                   FMPhI-UNIBA.ok    IN2P3-LAPP.ok   JINR-LCG2.ok       Nevis_cvmfs_squid.ok   RAL-LCG2_0.ok   RAL-LCG2.ok     SARA-MATRIX_0.ok   SARA-MATRIX.ok

MRTG plots

A cron job run every 5 minutes:

# Updating MRTG monitoring that uses GOCDB and OIM records
*/5 * * * * [ "`cl_status rscstatus`" == "all" ] || exit; /home/squidmon/scripts/all/mrtg_plots.py >> /home/squidmon/logs/all/mrtg_plots.log 2>&1

The script is relatively straight forward, it

Webpage

The index.html file is created by hand.

-- AlastairDewhurst - 2015-12-09

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Topic revision: r2 - 2015-12-09 - AlastairDewhurst
 
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