I currently set up a script to restart my http servers + php5 fpm but can't get it to work. I have googled
and have found that mostly permissions are
the problems of my error but can't figure it out.
I start my script using
/usr/lib/nagios/plugins/check_nrpe -H bart -c restart_http
This is
the output in my syslog on
the node I want to restart
Jun 27 06:29:35 bart nrpe[8926]: Connection from 192.168.133.17 port 25028
Jun 27 06:29:35 bart nrpe[8926]: Host address is in allowed_hosts
Jun 27 06:29:35 bart nrpe[8926]: Handling
the connection...
Jun 27 06:29:35 bart nrpe[8926]: Host is asking for command 'restart_http' to be run...
Jun 27 06:29:35 bart nrpe[8926]: Running command: /usr/bin/sudo /usr/lib/nagios/plugins/http-restart
Jun 27 06:29:35 bart nrpe[8926]: Command completed with return code 1
and output:
Jun 27 06:29:35 bart nrpe[8926]: Return Code: 1, Output: NRPE: Unable to read output
Jun 27 06:29:35 bart nrpe[8926]: Connection from 192.168.133.17 closed.
If I run
the command myself it runs fine (but asks for a password) (nagios user)
This are
the script permission
and the script contents.
-rwxrwxrwx 1 nagios nagios 142 Jun 26 21:41 /usr/lib/nagios/plugins/http-restart
#!/bin/bash
echo "ok"
/etc/init.d/nginx stop
/etc/init.d/nginx start
/etc/init.d/php5-fpm stop
/etc/init.d/php5-fpm start
echo "done"
I also added this line to visudo
nagios ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
My local nagios nrpe.cfg
#############################################################################
# Sample NRPE Config File
# Written by: Ethan Galstad (
[email protected])
#
#
# 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/nagios/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=127.0.0.1,192.168.133.17
# 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=1
# 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
#
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 $ARG3$
command[restart_http]=/usr/lib/nagios/plugins/http-restart
#
# 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/
My Sudoers files
# /etc/sudoers
#
# This file MUST be edited with
the 'visudo' command as root.
#
# See
the man page for details on how to write a sudoers file.
#
Defaults env_reset
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL) ALL
nagios ALL=(ALL) NOPASSWD: /usr/lib/nagios/plugins/
# Allow members of group sudo to execute any command
# (Note that later entries override this, so you might need to move
# it further down)
%sudo ALL=(ALL) ALL
#
#includedir /etc/sudoers.d
Hopefully someone can help!