Re: Plugin XEN Nagios

Ok Lucio
No seu server XEN temos então o seguinte serviço no NRPE:
command[check_xenvm]=/usr/lib/nagios/plugins/check_xenvm -w 2 -c 0 # XEN
Lucio


No seu servidor de Nagios, mandando a linha abaixo no prompt, o que vc
obtem?

check_nrpe -H host_do_xen -p 5666 -c check_xenvm


Observei que o seu NRPE só está aceitando conexões locais. Mude a linha
server_address=127.0.0.1
para o IP da rede local, através da qual o nagios chegará ao seu servidor.


Mude tambem
allowed_hosts=127.0.0.1
Para o IP do servidor do Nagios.


Acho que vai dar certo...



2009/7/24 Lucio Antonio de Carvalho Junior <[email protected]>

> BLZ
>
>
> #############################################################################
> # Sample NRPE Config File
> # Written by: Ethan Galstad ([email protected])
> #
> # Last Modified: 11-23-2007
> #
> # NOTES:
> # This is a sample configuration file for the NRPE daemon.  It needs to be
> # located on the remote host that is running the NRPE daemon, not the host
> # from which the check_nrpe client is being executed.
>
> #############################################################################
>
>
> # LOG FACILITY
> # The syslog facility that should be used for logging purposes.
>
> log_facility=daemon
>
>
>
> # PID FILE
> # The name of the file in which the NRPE daemon should write it's process
> ID
> # number.  The file is only written if the NRPE daemon is started by the
> root
> # user and is running in standalone mode.
>
> pid_file=/var/run/nrpe.pid
>
>
>
> # PORT NUMBER
> # Port number we should wait for connections on.
> # NOTE: This must be a non-priviledged port (i.e. > 1024).
> # NOTE: This option is ignored if NRPE is running under either inetd or
> xinetd
>
> server_port=5666
>
>
>
> # SERVER ADDRESS
> # Address that nrpe should bind to in case there are more than one
> interface
> # and you do not want nrpe to bind on all interfaces.
> # NOTE: This option is ignored if NRPE is running under either inetd or
> xinetd
>
> #server_address=127.0.0.1
>
>
>
> # NRPE USER
> # This determines the effective user that the NRPE daemon should run as.
> # You can either supply a username or a UID.
> #
> # NOTE: This option is ignored if NRPE is running under either inetd or
> xinetd
>
> nrpe_user=nagios
>
>
>
> # NRPE GROUP
> # This determines the effective group that the NRPE daemon should run as.
> # You can either supply a group name or a GID.
> #
> # NOTE: This option is ignored if NRPE is running under either inetd or
> xinetd
>
> nrpe_group=nagios
>
>
>
> # ALLOWED HOST ADDRESSES
> # This is an optional comma-delimited list of IP address or hostnames
> # that are allowed to talk to the NRPE daemon.
> #
> # Note: The daemon only does rudimentary checking of the client's IP
> # address.  I would highly recommend adding entries in your
> /etc/hosts.allow
> # file to allow only the specified host to connect to the port
> # you are running this daemon on.
> #
> # NOTE: This option is ignored if NRPE is running under either inetd or
> xinetd
>
> allowed_hosts=127.0.0.1
>
>
>
> # COMMAND ARGUMENT PROCESSING
> # This option determines whether or not the NRPE daemon will allow clients
> # to specify arguments to commands that are executed.  This option only
> works
> # if the daemon was configured with the --enable-command-args configure
> script
> # option.
> #
> # *** ENABLING THIS OPTION IS A SECURITY RISK! ***
> # Read the SECURITY file for information on some of the security
> implications
> # of enabling this variable.
> #
> # Values: 0=do not allow arguments, 1=allow command arguments
>
> dont_blame_nrpe=0
>
>
>
> # COMMAND PREFIX
> # This option allows you to prefix all commands with a user-defined string.
> # A space is automatically added between the specified prefix string and
> the
> # command line from the command definition.
> #
> # *** THIS EXAMPLE MAY POSE A POTENTIAL SECURITY RISK, SO USE WITH CAUTION!
> ***
> # Usage scenario:
> # Execute restricted commmands using sudo.  For this to work, you need to
> add
> # the nagios user to your /etc/sudoers.  An example entry for alllowing
> # execution of the plugins from might be:
> #
> # nagios          ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
> #
> # This lets the nagios user run all commands in that directory (and only
> them)
> # without asking for a password.  If you do this, make sure you don't give
> # random users write access to that directory or its contents!
>
> # command_prefix=/usr/bin/sudo
>
>
>
> # DEBUGGING OPTION
> # This option determines whether or not debugging messages are logged to
> the
> # syslog facility.
> # Values: 0=debugging off, 1=debugging on
>
> debug=0
>
>
>
> # COMMAND TIMEOUT
> # This specifies the maximum number of seconds that the NRPE daemon will
> # allow plugins to finish executing before killing them off.
>
> command_timeout=60
>
>
>
> # CONNECTION TIMEOUT
> # This specifies the maximum number of seconds that the NRPE daemon will
> # wait for a connection to be established before exiting. This is sometimes
> # seen where a network problem stops the SSL being established even though
> # all network sessions are connected. This causes the nrpe daemons to
> # accumulate, eating system resources. Do not set this too low.
>
> connection_timeout=300
>
>
>
> # WEEK RANDOM SEED OPTION
> # This directive allows you to use SSL even if your system does not have
> # a /dev/random or /dev/urandom (on purpose or because the necessary
> patches
> # were not applied). The random number generator will be seeded from a file
> # which is either a file pointed to by the environment valiable $RANDFILE
> # or $HOME/.rnd. If neither exists, the pseudo random number generator will
> # be initialized and a warning will be issued.
> # Values: 0=only seed from /dev/[u]random, 1=also seed from weak randomness
>
> #allow_weak_random_seed=1
>
>
>
> # INCLUDE CONFIG FILE
> # This directive allows you to include definitions from an external config
> file.
>
> #include=<somefile.cfg>
>
>
>
> # INCLUDE CONFIG DIRECTORY
> # This directive allows you to include definitions from config files (with
> a
> # .cfg extension) in one or more directories (with recursion).
>
> #include_dir=<somedirectory>
> #include_dir=<someotherdirectory>
>
>
>
> # COMMAND DEFINITIONS
> # Command definitions that this daemon will run.  Definitions
> # are in the following format:
> #
> # command[<command_name>]=<command_line>
> #
> # When the daemon receives a request to return the results of
> <command_name>
> # it will execute the command specified by the <command_line> argument.
> #
> # Unlike Nagios, the command line cannot contain macros - it must be
> # typed exactly as it should be executed.
> #
> # Note: Any plugins that are used in the command lines must reside
> # on the machine that this daemon is running on!  The examples below
> # assume that you have plugins installed in a /usr/local/nagios/libexec
> # directory.  Also note that you will have to modify the definitions below
> # to match the argument format the plugins expect.  Remember, these are
> # examples only!
>
>
> # The following examples use hardcoded command arguments...
>
> command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
> command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c
> 30,25,20
> command[check_hda1]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p
> /dev/hda1
> command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10
> -s Z
> command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c
> 200
> command[check_xenvm]=/usr/lib/nagios/plugins/check_xenvm -w 2 -c 0 # XEN
> Lucio
>
> # The following examples allow user-supplied arguments and can
> # only be used if the NRPE daemon was compiled with support for
> # command arguments *AND* the dont_blame_nrpe directive in this
> # config file is set to '1'.  This poses a potential security risk, so
> # make sure you read the SECURITY file before doing this.
>
> #command[check_users]=/usr/lib/nagios/plugins/check_users -w $ARG1$ -c
> $ARG2$
> #command[check_load]=/usr/lib/nagios/plugins/check_load -w $ARG1$ -c $ARG2$
> #command[check_disk]=/usr/lib/nagios/plugins/check_disk -w $ARG1$ -c $ARG2$
> -p $ARG3$
> #command[check_procs]=/usr/lib/nagios/plugins/check_procs -w $ARG1$ -c
> $ARG2$ -s $ARG3$
>
> #
> # local configuration:
> #    if you'd prefer, you can instead place directives here
> include=/etc/nagios/nrpe_local.cfg
>
> #
> # you can place your config snipplets into nrpe.d/
> include_dir=/etc/nagios/nrpe.d/
>
>
>
>
> Em 23/07/2009 às 10:58 horas, "Jose Oliveira" <[email protected]>
> escreveu:
>
> Manda ai então o pedaço do nrpe.cfg que define o comando, que está no seu
> servidor Xen, pra gente dar um pitaco...
>
>
>
> 2009/7/23 Lucio Antonio de Carvalho Junior <[email protected]>
>
>> Então ja instalei (eu acho ) no servidor quanto no cliente
>>
>>
>> Em 22/07/2009 às 22:29 horas, "Jose Oliveira" <[email protected]>
>> escreveu:
>>
>> Olá colega
>>
>> Estou imaginando que o seu nagios dora na máquina A e o Xen serve na
>> máquina B.
>>
>> Se estou correto, voce precisa instalar na maquina B o nrpe e configurar
>> nele este plugin.
>>
>> No nagios, voce chama o check__nrpe passando o nome que colocastes no nrpe
>> do host do Xen.
>>
>>
>>
>> PS: Registre-se na lista-nagios acessando
>> <https://lists.sourceforge.net/lists/listinfo/nagios-users-br><https://lists.sourceforge.net/lists/listinfo/nagios-users-br>
>> https://lists.sourceforge.net/lists/listinfo/nagios-users-br
>>
>>
>> Abraços
>>
>>
>> 2009/7/22 Lucio A, de Carvalho Junior <[email protected]>
>>
>>> Estou tendo dificuldade para instalar o plungin do XEN do Nagios:
>>>
>>> esse é o plugin para os intereçados :
>>>
>>> #!/bin/sh
>>> #
>>> # COPYRIGHT    : (c) 2006 SUSE Linux GmbH. All rights reserved.
>>> #
>>> # AUTHOR       : Axel Schmidt
>>> #
>>> # BELONGS TO   : NLPOS/SLEPOS/Xen Nagios Integration
>>> #
>>> # DESCRIPTION  : Runs "xm list" and returns the available xen vms
>>> #
>>> # $Revision: 1.0 $
>>> #
>>> # Permission to use, copy, modify, distribute, and sell this software
>>> # and its documentation for any purpose is hereby granted without fee,
>>> # provided that the above copyright notice appear in all copies and that
>>> # both that copyright notice and this permission notice appear in
>>> # supporting documentation.
>>>
>>> # The above copyright notice and this permission notice shall be
>>> # included in all copies or substantial portions of the Software.
>>>
>>> # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>>> # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>>> # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
>>> # IN NO EVENT SHALL THE AUTHOR OR SUSE BE LIABLE FOR ANY CLAIM, DAMAGES
>>> # OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
>>> # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
>>> # THE USE OR OTHER DEALINGS IN THE SOFTWARE.
>>>
>>> PARM1=$1
>>> WARN=$2
>>> PARM2=$3
>>> CRIT=$4
>>>
>>> if [ "$PARM2" != "-c" -o "$CRIT" == "" ]; then
>>>        echo "Usage: $0 -w <warning> -c <critical>"
>>> # Nagios exit code 3 = status UNKNOWN = orange
>>>
>>> if [ "$PARM1" != "-h" ]; then
>>>        exit 3
>>>   else
>>>        echo ""
>>>        echo " -w = Minimum Number of Xen VMs to activate a warning
>>> message."
>>>        echo " -c = Number of Xen VMs to activate a critical message."
>>>        echo " -h = This help message."
>>>        exit 3
>>>   fi
>>> fi
>>>
>>> RUNNING=$(sudo /usr/sbin/xm list | awk '!/[DN]/  {print $1 }')
>>> NBVMS=$(echo $RUNNING | wc -w)
>>> HNAME=$(hostname)
>>>
>>> #echo "Xen Running =" $RUNNING
>>>
>>> if [ "$NBVMS" -le "$CRIT" ]; then
>>>        echo "Critical Xen VMs Usage - Total NB: $NBVMS - detected VMs:
>>> $RUNNING"
>>> # Nagios exit code 2 = status CRITICAL = red
>>>        exit 2
>>>        else if [ "$NBVMS" -le "$WARN" ]; then
>>>           echo "Warning Xen VMs Usage - Total NB: $NBVMS - detected
>>> VMs: $RUNNING"
>>> # Nagios exit code 1 = status WARNING = yellow
>>>           exit 1
>>>        else
>>>            echo "OK: Xen Hypervisor \"$HNAME\" is running Xen VMs:
>>> $RUNNING"
>>> # Nagios exit code 0 = status OK = green
>>>            exit 0
>>>        fi
>>> fi
>>> ##  FIM
>>>
>>>
>>> Retirado do proprio site da Novell :
>>>  <http://www.novell.com/coolsolutions/feature/19490.html><http://www.novell.com/coolsolutions/feature/19490.html>
>>> http://www.novell.com/coolsolutions/feature/19490.html
>>>
>>> Eu coloque a entrada do comando no /etc/nagios3/commands.cfg :
>>>
>>> ### added for Xen VM Monitoring
>>>
>>> define command{
>>>        command_name    check_xenvm
>>>        command_line    $USER1$/check_xenvm -w $ARG1$ -c $ARG2$
>>>        }
>>>
>>> Já reiniciei os seviços do nagios e o nrpe e continua com mesmo error:
>>>
>>> Warning: Return code of 127 for check of service 'Monitor XEN' on
>>> host 'fermat1' was out of bounds. Make sure the plugin you're trying to
>>> run
>>> actually exists.
>>>
>>> Então ele falar q o plugin não está funcionando, porem, fiz os teste
>>> local e funciou, será q tenho q colocar esse plugin em outro lugar ?
>>>
>>>
>>> Alguem ja usou esse plugin ?
>>>
>>> Obrigado
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> --
>>> [email protected] mailing list
>>>  <https://lists.sourceforge.net/lists/listinfo/nagios-users-br><https://lists.sourceforge.net/lists/listinfo/nagios-users-br>
>>> https://lists.sourceforge.net/lists/listinfo/nagios-users-br
>>> Wiki: <http://nagios-br.sf.net/wiki> <http://nagios-br.sf.net/wiki>
>>> http://nagios-br.sf.net/wiki
>>>
>>
>>
>>
>> --
>> Abraços
>> JGeraldo
>>
>>
>>
>>
>
>
> --
> Abraços
> JGeraldo
>
>
>
>


-- 
Abraços
JGeraldo
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