NetXMS Support Forum

The raspberry pi is creating a reverse ssh tunnel on my ssh server.
I am accessing the raspberry pi through that ssh server, using iptables rules.

I think the problem is that the netxms server is communicating with the ssh server (which does not have the nextxms agent installed)
It is not communicating with the raspberry pi.

#
# Sample configuration file for NetXMS agent
#

#
# Servers
#
# List of management servers which have read access to this agent.
# Both IP addresses and DNS names can be used. Multiple servers can be
# specified in one line, separated by commas. If this parameter used more
# than once, servers listed in all occurences will have access to agent.
#
# Examples:
# Servers = 10.0.0.1
# Servers = 127.0.0.1, srv1.domain.com, srv2.domain.com

#
# ControlServers
#
# List of management servers which can execute actions on agent. Hosts
# listed in this parameter also have read access to the agent. Both
# IP addresses and DNS names can be used. Multiple servers can be specified
# in one line, separated by commas. If this parameter used more than
# once, servers listed in all occurences will have access to agent.
#
# Examples:
# ControlServers = 10.0.0.1
# ControlServers = 127.0.0.1, srv1.domain.com, srv2.domain.com

#
# MasterServers
#
# List of management servers which have full access to agent. Hosts listed
# in this group can change agent's config, upload files to agent and initiate
# agent upgrade, as well as perform any task allowed for hosts listed in
# Servers and ControlServers. Both IP addresses and DNS names can be used.
# Multiple servers can be specified in one line, separated by commas.
# If this parameter used more than once, servers listed in all occurences
# will have access to agent.
#
# Examples:
MasterServers = 192.168.0.26, 192.168.0.28
# MasterServers = 127.0.0.1, srv1.domain.com, srv2.domain.com

#
# ListenPort
#
# Defines the port number for the agent to listen on incoming connections.
# Default values is 4700
#
# Examples:
# ListenPort = 4700

#
# LogFile
#
# Agent's log file. To write log to syslog (or Event Log on Windows),
# use {syslog} as file name.
#
# Examples:
# LogFile = {syslog}
# LogFile = /var/log/nxagentd.log

#
# RequireAuthentication
#
# If set to "yes", host connected to agent have to provide correct shared
# secret before issuing any command. Default value is "no".
#
# Example:
# RequireAuthentication = no

#
# RequireEncryption
#
# If set to "yes", host connected to agent will be forced to use encryption,
# and if encryption is not supported by remote host, connection will be
# dropped. Default value is "no". This parameter has no effect if agent
# was compiled without encryption support.
#
# Example:
# RequireEncryption = no

#
# EnabledCiphers
#
# Control what ciphers agent can use for connection encryption. Value for
# this parameter is a cipher code. To enable more than one cipher, they
# codes should be added. By default, all possible ciphers are enabled.
#
# Possible cipher codes:
# 1  =  AES-256
# 2  =  BLOWFISH
# 4  =  IDEA
#       8  =  Triple DES
#
# Example (enable AES-256 and IDEA):
# EnabledCiphers = 5

#
# SharedSecret
#
# Agent's shared secret. Used only if RequireAuthentication set to "yes".
#
# Example:
# SharedSecret = secret

#
# MaxSessions
#
# Maximum number of simultaneous communication sessions. Possible value can
# be in range from 2 to 1024. Default value is 32.
#
# Example:
# MaxSessions = 32

#
# SessionIdleTimeout
#
# Communication session's idle timeout in seconds. If agent will not receive
# any command from peer within specified timeout, session will be closed.
# Default value is 60 seconds.
#
# Example:
# SessionIdleTimeout = 60

#
# FileStore
#
# Directory to be used for storing files uploaded by installation server(s).
#
# Example:
# FileStore = /var/nxagentd

#
# TimeOut
#
# GET request timeout in seconds. If GET request cannot be completed for
# specified amount of time, agent will return an error to server.
# Default value is 5 seconds.
#
# Example:
# TimeOut = 5

#
# StartupDelay
#
# Number of seconds agent should wait on startup before start servicing
# requests. This parameter can be useful to prevent false reports about
# missing processes or failed services just after monitored system startup.
# Default value is 0, i.e. no startup delay.
#
# Example:
# StartupDelay = 0

#
# PlatformSuffix
#
# String to be added as suffix to value of System.PlatformName parameter.
#
# Example:
# PlatformSuffix = dbg

#
# EnableSubagentAutoload
#
# Enable or disable autoloading of platform subagent(s).
# Default value is "yes".
#
# Example:
# EnableSubagentAutoload = yes

#
# EnableProxy
#
# Allow requests forwarding
# Default value is "no"
#
# Example:
# EnableProxy = no

#
# EnableSNMPProxy
#
# Allow SNMP requests forwarding
# Default value is "no"
#
# Example:
# EnableSNMPProxy = no

#
# SubAgent
#
# Subagent to load. To load multiple subagents, you should use multiple
# SubAgent parameters. Subagents will be loaded in the same order as they
# appears in configuration file.
#
# UNIX example:
# SubAgent = [path_to_netxms_install_dir]/lib/libnsm_linux.so
#
# Windows example:
# SubAgent = winperf.nsm

#
# ExternalParameter
#
# Add parameter handled by external command. To add multiple parameters, you
# should use multiple ExternalParameter entries. Please note that on Windows
# agent uses system process execution API for execution of specified
# command, so you cannot use pipes or shell commands. If you need to
# execute command via shell, use ExternalParameterShellExec instead.
#
# Syntax:
# ExternalParameter = <parameter_name>:<command_line>
# If you specify parameter name as "name(*)", then you can use $1 .. $9 in
# command line to substitute actual arguments passed from server.
#
# Examples:
# ExternalParameter = Test:echo test
# ExternalParameter = LineCount(*):cat $1 | wc -l
# ExternalParameter = Test2(*):myprog $1 $2

#
# ExternalParameterShellExec
#
# Add parameter handled by external command. To add multiple parameters, you
# should use multiple ExternalParameterShellExec entries. This is similar
# to ExternalParameter with exception that agent will use shell to execute
# specified command instead of system process exeution API. This difference
# presented only on Windows system, on other systems ExternalParameter and
# ExternalParameterShellExec behaves identically.
#
# Syntax:
# ExternalParameterShellExec = <parameter_name>:<command_line>
# If you specify parameter name as "name(*)", then you can use $1 .. $9 in
# command line to substitute actual arguments passed from server.
#
# Examples:
# ExternalParameterShellExec = Test:dir c:\ | wc -l

I forgot to mention, this is the output from the configuration poll

[25.03.2015 22:17:34] **** Poll request sent to server ****
[25.03.2015 22:17:34] Poll request accepted
[25.03.2015 22:17:34] Starting configuration poll for node ClientX
[25.03.2015 22:17:34] Checking node's capabilities...
[25.03.2015 22:17:34]    Checking NetXMS agent...
[25.03.2015 22:17:35]    Checking SNMP...
[25.03.2015 22:17:49] Capability check finished
[25.03.2015 22:17:49] Checking interface configuration...
[25.03.2015 22:17:49] Unable to get interface list from node
[25.03.2015 22:17:49]    Interface "unknown" is no longer exist
[25.03.2015 22:17:49] Interface configuration check finished
[25.03.2015 22:17:49] Checking node name
[25.03.2015 22:17:49] Node name is OK
[25.03.2015 22:17:49] Finished configuration poll for node ClientX
[25.03.2015 22:17:49] Node configuration was not changed after poll
[25.03.2015 22:17:49] **** Poll completed successfully ****

Since there is no agent available for raspberry pi, I thought I'd give it a shot, and I tried to compile it myself. After reading a few forum posts, I run the following commands to compile the agent.

wget https://www.netxms.org/download/netxms-2.0-M2.tar.gz
tar -zxvf netxms-2.0-M2.tar.gz
apt-get update
apt-get install -y libssl-dev
cd netxms-2.0-M2/
./configure --with-agent --libdir=/usr/lib --disable-iconv
make
make install
cp netxms-2.0-M2/contrib/nxagentd.conf-dist /etc/nxagentd.conf
/usr/local/bin/nxagentd –D 9

Everything run without any errors, I only had to create the file /var/netxms/registry.dat because I was getting some errors that it didn't exist. After I created it, the agent run flawlessly.

My problem is that I can't get the agent to talk to the NetXMS server. I've entered the server's IP Address in /etc/nxagentd.conf as a master server, but no luck.

This is the output of the agent when I run it.

root@ClientX:/var/netxms# /usr/local/bin/nxagentd -D 9
[25-Mar-2015 22:26:51.282] [INFO ] Additional configs was loaded from /etc/nxagentd.conf.d
[25-Mar-2015 22:26:51.284] [INFO ] Debug level set to 9
[25-Mar-2015 22:26:51.285] [DEBUG] Data directory: /var/netxms
[25-Mar-2015 22:26:51.287] [DEBUG] Subagent API initialized
[25-Mar-2015 22:26:51.297] [DEBUG] Validating ciphers
[25-Mar-2015 22:26:51.300] [DEBUG]    AES-256 enabled
[25-Mar-2015 22:26:51.302] [DEBUG]    Blowfish-256 enabled
[25-Mar-2015 22:26:51.303] [DEBUG]    IDEA disabled (config)
[25-Mar-2015 22:26:51.304] [DEBUG]    3DES enabled
[25-Mar-2015 22:26:51.305] [DEBUG]    AES-128 enabled
[25-Mar-2015 22:26:51.307] [DEBUG]    Blowfish-128 enabled
[25-Mar-2015 22:26:51.309] [DEBUG] Crypto library initialized
[25-Mar-2015 22:26:52.427] [DEBUG] Linux: using /sys/block to distinguish devices from partitions
[25-Mar-2015 22:26:52.432] [DEBUG] Unable to parse /proc/drbd, DRBD data collector will not start
[25-Mar-2015 22:26:52.437] [DEBUG] ParseIoStat(): new device added (name=ram0 isRealDevice=1)
[25-Mar-2015 22:26:52.440] [DEBUG] ParseIoStat(): new device added (name=ram1 isRealDevice=1)
[25-Mar-2015 22:26:52.446] [DEBUG] ParseIoStat(): new device added (name=ram2 isRealDevice=1)
[25-Mar-2015 22:26:52.449] [DEBUG] ParseIoStat(): new device added (name=ram3 isRealDevice=1)
[25-Mar-2015 22:26:52.450] [DEBUG] ParseIoStat(): new device added (name=ram4 isRealDevice=1)
[25-Mar-2015 22:26:52.452] [DEBUG] ParseIoStat(): new device added (name=ram5 isRealDevice=1)
[25-Mar-2015 22:26:52.453] [INFO ] Subagent "linux.nsm" loaded successfully
[25-Mar-2015 22:26:52.454] [DEBUG] Debug callback set for DB library
[25-Mar-2015 22:26:52.456] [DEBUG] ParseIoStat(): new device added (name=ram6 isRealDevice=1)
[25-Mar-2015 22:26:52.458] [DEBUG] ParseIoStat(): new device added (name=ram7 isRealDevice=1)
[25-Mar-2015 22:26:52.460] [DEBUG] ParseIoStat(): new device added (name=ram8 isRealDevice=1)
[25-Mar-2015 22:26:52.461] [DEBUG] ParseIoStat(): new device added (name=ram9 isRealDevice=1)
[25-Mar-2015 22:26:52.463] [DEBUG] ParseIoStat(): new device added (name=ram10 isRealDevice=1)
[25-Mar-2015 22:26:52.464] [DEBUG] ParseIoStat(): new device added (name=ram11 isRealDevice=1)
[25-Mar-2015 22:26:52.466] [DEBUG] ParseIoStat(): new device added (name=ram12 isRealDevice=1)
[25-Mar-2015 22:26:52.467] [DEBUG] ParseIoStat(): new device added (name=ram13 isRealDevice=1)
[25-Mar-2015 22:26:52.469] [DEBUG] ParseIoStat(): new device added (name=ram14 isRealDevice=1)
[25-Mar-2015 22:26:52.470] [DEBUG] ParseIoStat(): new device added (name=ram15 isRealDevice=1)
[25-Mar-2015 22:26:52.472] [DEBUG] ParseIoStat(): new device added (name=loop0 isRealDevice=1)
[25-Mar-2015 22:26:52.473] [DEBUG] ParseIoStat(): new device added (name=loop1 isRealDevice=1)
[25-Mar-2015 22:26:52.475] [DEBUG] ParseIoStat(): new device added (name=loop2 isRealDevice=1)
[25-Mar-2015 22:26:52.476] [DEBUG] ParseIoStat(): new device added (name=loop3 isRealDevice=1)
[25-Mar-2015 22:26:52.478] [DEBUG] ParseIoStat(): new device added (name=loop4 isRealDevice=1)
[25-Mar-2015 22:26:52.479] [DEBUG] ParseIoStat(): new device added (name=loop5 isRealDevice=1)
[25-Mar-2015 22:26:52.481] [DEBUG] ParseIoStat(): new device added (name=loop6 isRealDevice=1)
[25-Mar-2015 22:26:52.482] [DEBUG] ParseIoStat(): new device added (name=loop7 isRealDevice=1)
[25-Mar-2015 22:26:52.484] [DEBUG] ParseIoStat(): new device added (name=mmcblk0 isRealDevice=1)
[25-Mar-2015 22:26:52.485] [DEBUG] ParseIoStat(): new device added (name=mmcblk0p1 isRealDevice=0)
[25-Mar-2015 22:26:52.487] [DEBUG] ParseIoStat(): new device added (name=mmcblk0p2 isRealDevice=0)
[25-Mar-2015 22:26:53.457] [DEBUG] External parameters providers poller thread will not start
[25-Mar-2015 22:26:53.458] [DEBUG] Session agent connector disabled
[25-Mar-2015 22:26:53.461] [DEBUG] Trying to bind on 0.0.0.0:4700
[25-Mar-2015 22:26:53.462] [INFO ] Listening on socket 0.0.0.0:4700
[25-Mar-2015 22:26:54.462] [INFO ] NetXMS Agent started
Agent running. Press Ctrl+C to shutdown.

Any idea why the agent is not communicating with the server? I'm I missing something here? Or I'm I in over my head?

Can you please create an agent for arm processors?
I could really use one for the raspberry pi.

Thanks