external check - "flapping"

[highland]

Hello

I've defined item with type=external check, and key=netin.sh (or netout.sh), store-value=delta. The problem is that it sometimes it gets good values and draw graph correctly, but a minute later not. This "flapping" is constant.

zabbix@sparc /root $ /etc/zabbix/externalscripts/netout.sh
2670441195
zabbix@sparc /root $ /etc/zabbix/externalscripts/netin.sh
367251059
zabbix@sparc /root $ id
uid=1005(zabbix) gid=1008(zabbix) groups=1008(zabbix)

Logs:

Parameter [22919][router1:netout.sh] became supported
Item [router1:netin.sh] error: Script /etc/zabbix/externalscripts/netin.sh returned nothing.
Parameter [router1:netin.sh] is not supported, old status [0]
Parameter [22916][router1:netin.sh] became supported
Item [router1:netin.sh] error: Script /etc/zabbix/externalscripts/netin.sh returned nothing.
Parameter [router1:netin.sh] is not supported, old status [0]
Item [router1:netout.sh] error: Script /etc/zabbix/externalscripts/netout.sh returned nothing.
Parameter [router1:netout.sh] is not supported, old status [0]
Item [router1:netin.sh] error: Script /etc/zabbix/externalscripts/netin.sh returned nothing.
Item [router1:netout.sh] error: Script /etc/zabbix/externalscripts/netout.sh returned nothing.

The effect is correct graph - but it has "blank spaces" and "pikes" (pikes appear after a few faled tries finish with success - it than has much greater value to draw).

CPU/load on zabbix server is ok, script is working correctly (i have logging in logfile for that script).

Where is the problem ?

Thanx

[JBo]

Hi,

I've defined item with type=external check, and key=netin.sh (or netout.sh), store-value=delta. The problem is that it sometimes it gets good values and draw graph correctly, but a minute later not. This "flapping" is constant.

I have seen this problem with scripts that may sometimes timeout.
You may raise it to 30s (max. allowed value) in zabbix_server.conf and zabbix_agentd.conf:
Timeout=30

Hope this helps,
JBo

[highland]

Thanx JBo ! It helped !