search

sonata-nfv / tng-communications-pilot

5GTANGO Communications pilot repository
Apache License 2.0
0 stars 12 forks source link

Return number of WAC instances as SNMP variable #80

Closed antonroman closed 5 years ago

antonroman commented 5 years ago

The RP must return the value of a SNMP variable with the total number of WAC instances. The RP is the right VNF to control this as each VNF-WAC must be provisioned in the right upstream group.

DanielVilaFalcon commented 5 years ago

I've done a shell script that gets the number of WAC instances counting the number of lines that match with a specific pattern and writes the result in the /tmp/wac-instances.txt file to SNMP monitoring . It could be in the /opt/wac-instances/wacs.sh path of rp-vnf. 

#!/bin/bash
destdir=/tmp/wac-instances.txt
while true
do
  wacinstances=$(grep -c -E -o 'server ([0-9]{1,3}[\.]){3}[0-9]{1,3} max_fails' /etc/nginx/sites-enabled/wac-nginx.conf)
  echo "$wacinstances" > "$destdir"
  sleep 10
done

I leave it here to test it when the rp-fsm will be able to support more than one WAC instances #85 It could be executed from the snmpd.conf file. In this way it would be executed each time the variable SNMP is updated.

DanielVilaFalcon commented 5 years ago

It could be useful to include the scenario where the WAC is referred as a host instead of a numeric IP. The new IOD of the wacInstances SNMP variables is in the next picture:

snmpget -v2c -c public localhost snmpget -v2c -c public localhost .1.3.6.1.4.1.8072.1.3.2.3.1.1.12.119.97.99.73.110.115.116.97.110.99.101.115

image

DanielVilaFalcon commented 5 years ago

The checksum of the image that contains the wacInstances SNMP variable is:

619e9709edb86f97f671b4e6c8ee69ea