Timeout while answering request

[drose12]

Ok, a really wierd one here.

Zabbix 1.6.1
Agent 1.6.1 CentOS x86_64

I have a script that gives me some cpu statistics, and I get the following error in the zabbix_server.log file

4039:20081217:152934 Timeout while answering request
4039:20081217:152934 Get value from agent failed. Error: ZBX_TCP_READ() failed [Interrupted system call]
4039:20081217:152934 Host [webcargo]: first network error, wait for 15 seconds
4039:20081217:152934 Parameter [vmc.cpu.stats] will be checked after 120 seconds on host [webcargo]

Here is the zabbix_agentd.conf entries

UserParameter=vmc.cpu.stats,/usr/local/sbin/cpu_stats.pl
UserParameter=vmc.cpu.iowait,/usr/local/sbin/cpu_stats.pl -iowait

Now as you can see I have the same script being used, and if you pass a parameter it gives you different values.

Running the script manually using either of the above returns a value immediately.

If I telnet right to the box:

# telnet webcargo 10050
Trying 10.1.16.174...
Connected to webcargo.vm.local (10.1.16.174).
Escape character is '^]'.
vmc.cpu.stats
(...30 seconds wait...)
ZBXD17745Connection closed by foreign host.

However that same box using the other UserParameter comes back fast.

# telnet webcargo 10050
Trying 10.1.16.174...
Connected to webcargo.vm.local (10.1.16.174).
Escape character is '^]'.
vmc.cpu.iowait
ZBXD0.00Connection closed by foreign host.

Any insight? And please don't tell me to use the built in cpu items.

[drose12]

I'm going to try to re-code this using the system cron and trappers...I'll update with my results.

[trikke]

Hi drose,

what is the return value of your script if u run: /usr/local/sbin/cpu_stats.pl.
Is it Character or Text or just a value ( Or a value with cariage-return, so not an integer ????? )
Check on all those issues. If your return value is not of the Type u defined in the item Configuration, u might have a problem!!!!

Greets
Patrick

[drose12]

The return value is an integer...actually the PID as this spawns off a sub script that writes some values from iostat to a text file.


...


&gather();
print "$$";
exit(0);

sub gather {
system("/usr/local/sbin/cpu_gather.pl&");
}

[drose12]

I used the same perl scripts inside a call from a UserParameter that contained a shell script wrapper instead of the perl script and it appears to be working fine with no impact to my queues.

Is there an issue using perl scripts in UserParameter ?