Problem with Bash script as external check

[sebelk]

Hi,
I have a script that outputs the ssCpuRawUser which is as follows:
#! /bin/bash

IP="$1"

export user=`snmpwalk -v2c "$IP" -OQvs -c "paparulo" 1.3.6.1.4.1.2021.11.50.0`



export system=`snmpwalk -v2c "$IP" -OQvs -c "paparulo" 1.3.6.1.4.1.2021.11.52.0`



export idle=`snmpwalk -v2c "$IP" -OQvs -c "paparulo" 1.3.6.1.4.1.2021.11.53.0`



export waiting=`snmpwalk -v2c "$IP" -OQvs -c "paparulo" 1.3.6.1.4.1.2021.11.54.0`


export TOTAL=`echo "$user" + "$system" + "$idle" + "$waiting" | bc`

export peruser=`echo "$user" / "$TOTAL" \* 100| bc -l`

EOF


Well as documentation state hostname is passed as first parameter, but log says:

13014:20071205:121109 Parameter [cpu-user.sh] is not supported by agent on host [Spectrum] Old status [0]

I've tried to use something as simple as:

#! /bin/bash
echo "$1"


And problem remains.

Could you help me to fix that?

Thanks in advance!

[vikty]

Enable

In the agentd config file there is a parameter that disable the external check

To default

# Disable active checks. The agent will work in passive mode listening server.
DisableActive=1

comment the disable prameter

# Disable active checks. The agent will work in passive mode listening server.
#DisableActive=1

In second the script must be insert in the agent config file
for example

UserParameter=system.test,who|wc -l

UserParameter=key,cmd

or you can use the external check in items config section...

[Tenzer]

There is a difference between active checks and external checks.
- Active checks are run on the agent side, and the result is sent to the server, instead of the server polling from the client.
- External check are run on the server, and can be used to check services from the server, which you can't set up in Zabbix, like a specific DB query.

You should be aware that when using external checks, the host's name is passed on to the script, which means that either has to be a valid DNS hostname, or that host should be added in the servers hosts file. It doesn't seem like your code is optimized for this.
There is a patch here on the forums for how to change the behavior of external checks, in order to make them use the IP/hostname defined for each host:

http://www.zabbix.com/forum/showthread.php?t=8412

[vikty]

SORRY

# Enable remote commands for ZABBIX agent. By default remote commands disabled.
#EnableRemoteCommands=1

I have inserted a bad line of the agent config file....

[freak]

No, remote commands again are not External Checks.
Remote Commands allow the agent to execute just about any script on the host it runs on. (Note that it is in most cases insecure and dangerous to activate this..)

External Checks are external scripts run by the server on the host the server runs on.

i.e. a traceroute to the given monitored host.

hth
Sebastian