*** Cannot connect to [10.0.2.188]:10050 [Interrupted system call]

[hanarina]

i got this error when i add new host at the zabbix frontend..i already configure zabbix agent on the agent (10.0.2.188) and start the agent,what the problems when i got this error,can anyone tell me what wrong?

this is my zabbix_agentd.conf

# This is config file for zabbix_agentd
# To get more information about ZABBIX, go http://www.zabbix.com

############ GENERAL PARAMETERS #################

# List of comma delimited IP addresses (or hostnames) of ZABBIX servers.
# No spaces allowed. First entry is used for sending active checks.
# Note that hostnames must resolve hostname->IP address and
# IP address->hostname.

Server=10.0.10.183

# Server port for sending active checks

#ServerPort=10051
ServerPort=10051


# Unique hostname. Required for active checks.

Hostname=itd.cybersecurity.org.my

# Listen port. Default is 10050

ListenPort=10050

# IP address to bind agent
# If missing, bind to all available IPs

#ListenIP=127.0.0.1
ListenIP=10.0.2.188

# Number of pre-forked instances of zabbix_agentd.
# Default value is 5
# This parameter must be between 1 and 16

StartAgents=5

# How often refresh list of active checks. 2 minutes by default.

#RefreshActiveChecks=120

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

#DisableActive=1

# Enable remote commands for ZABBIX agent. By default remote commands disabled.

# Specifies debug level
# 0 - debug is not created
# 1 - critical information
# 2 - error information
# 3 - warnings (default)
# 4 - for debugging (produces lots of information)

DebugLevel=3

# Name of PID file

PidFile=/var/tmp/zabbix_agentd.pid

# Name of log file.
# If not set, syslog will be used

LogFile=/tmp/zabbix_agentd.log

# Maximum size of log file in MB. Set to 0 to disable automatic log rotation.
#LogFileSize=1

# Spend no more than Timeout seconds on processing
# Must be between 1 and 30

Timeout=3

####### USER-DEFINED MONITORED PARAMETERS #######
# Format: UserParameter=<key>,<shell command>
# Note that shell command must not return empty string or EOL only
#UserParameter=system.test,who|wc -l
### Set of parameter for monitoring MySQL server (v3.23.42 and later)
### Change -u<username> and add -p<password> if required
#UserParameter=mysql.ping,mysqladmin -uroot ping|grep alive|wc -l
#UserParameter=mysql.uptime,mysqladmin -uroot status|cut -f2 -d":"|cut -f1 -d"T"
#UserParameter=mysql.threads,mysqladmin -uroot status|cut -f3 -d":"|cut -f1 -d"Q
"
#UserParameter=mysql.questions,mysqladmin -uroot status|cut -f4 -d":"|cut -f1 -d"S"
#UserParameter=mysql.slowqueries,mysqladmin -uroot status|cut -f5 -d":"|cut -f1-d"O"
#UserParameter=mysql.qps,mysqladmin -uroot status|cut -f9 -d":"
#UserParameter=mysql.version,mysql -V



regards,
hanarina

zabbix 1.4.5,freebsd 6.3

[vinny]

hi,
try from ur zabbix server :
# telnet 10.0.2.188 10050
if it answers, then enter : agent.version

If it does not answer, is it possible to ping the server ?
U can change the debug level on the agent configuration to 5, restart the agent and then retry the telnet.

vinny

[hanarina]

cannot telnet..

i try what u suggest which telnet to the agent but it doesnt work..
i cannot telnet the agent..this is the result:

#telnet 10.0.2.188 10050
Trying 10.0.2.188...
telnet: connect to address 10.0.2.188: Operation timed out
telnet: Unable to connect to remote host

[vinny]

so the connection is clearly not possible to ur agent...

is the ping possible ?
the network routes are ok ?

increase the debug level on ur agent and restart it.
sometimes it is caused if the ip of the zabbix server is not itself but a router that is not authorized in the agent config.

vinny

[Jason]

Have you checked that the firewall is turned off on the agent machine or at the very least there are holes in to allow communication from your server on port 10050?

[m0be]

On the linux server that it wont connect to try doing the following

iptables -I FORWARD -p tcp --dport 10050 -j ACCEPT
iptables -I INPUT -p tcp --dport 10050 -j ACCEPT

This resolved my issue as the server I wanted to monitor had IPTABLES enforcing