[solved][0.8.8b] spine poller not waiting for script/exit

[ClontarfX]

Hi All,

I've got an issue where a simple script using hddtemp is not being polled/captured by the spine poller (I think).

The script takes approximately 2.5 seconds to complete

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root@wdhq:/usr/share/cacti/site/scripts# time ./hdd_temps.sh
hddtemp_sda:55.0 hddtemp_sdb:53.0 hddtemp_sdc:53.0 hddtemp_sdd:52.0 hddtemp_sde:53.0 hddtemp_sdf:54.0

real    0m2.383s
user    0m0.009s
sys     0m0.059s

However the cacti log shows the poller is finishing in less than a second.

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01/06/2015 07:15:01 AM - SYSTEM STATS: Time:0.3310 Method:spine Processes:4 Threads:4 Hosts:5 HostsPerProcess:2 DataSources:28 RRDsProcessed:17

Clearly the poller isn't waiting for the script to finish before saying "All done, here's your rrd data".

As a result, the graph for that rrd shows values of zero (was previously showing NaN).

Any ideas why the poller isn't waiting for the script to return data before finishing?

[ClontarfX]

I think I just figured it out. bash interprets my script fine, but when that same script gets called by spine, it doesn't interpret my dodgy string handling...

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hddtemp_sda=`hddtemp /dev/sda | cut -d " " -f 4 | cut -c 1-2`
echo hddtemp_sda:$hddtemp_sda.0

bash correctly interprets the ".0" as an appended string to the variable $hddtemp_sda

spine doesn't like this though...

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01/06/2015 03:30:01 PM - SPINE: Poller[0] Host[1] TH[1] DS[42] SCRIPT: sh /usr/share/cacti/site/scripts/hdd_temps.sh, output: hddtemp_sda:.0 hddtemp_sdb:.0 hddtemp_sdc:.0 hddtemp_sdd:.0 hddtemp_sde:.0 hddtemp_sdf:.0

I've now removed that so it only returns the value without the appended .0, however spine now returns nothing (can't parse the variables?)

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01/06/2015 03:35:02 PM - SPINE: Poller[0] Host[1] TH[1] DS[42] SCRIPT: sh /usr/share/cacti/site/scripts/hdd_temps.sh, output: hddtemp_sda: hddtemp_sdb: hddtemp_sdc: hddtemp_sdd: hddtemp_sde: hddtemp_sdf:

Is there some trick for returning variables in a bash script for spine?

[ClontarfX]

Ignore me, rookie mistake. hddtemp does not allow non-root.

chmod +x path/to/hddtemp has solved my problem