pandorafms/pandora_agents/shellscript/linux/pandora_agent

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#!/bin/bash
# **********************************************************************
# Pandora FMS Generic Linux Agent
# (c) 2010-2023 Pandora FMS
# with the help of many people. Please see http://pandorafms.org
# This code is licensed under GPL 2.0 license.
# **********************************************************************
AGENT_VERSION=3.1
AGENT_BUILD=100516
# **********************************************************************
# function configure_agent()
# Parses the configuration file and configures the agent.
# **********************************************************************
function configure_agent {
# Read config file
for a in `cat $PANDORA_HOME/pandora_agent.conf | grep -v -e "^#" | grep -v -e "^module" `
do
a=`echo $a | tr -s " " " "`
# Get general configuration parameters from config file
if [ ! -z "`echo $a | grep -e '^logfile'`" ]
then
PANDORA_LOGFILE=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Pandora Logfile is $PANDORA_LOGFILE" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^server_ip'`" ]
then
SERVER_IP=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Server IP Address is $SERVER_IP" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^server_path'`" ]
then
SERVER_PATH=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Server Path is $SERVER_PATH" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^temporal'`" ]
then
TEMP=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Temporal Path is $TEMP" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^interval'`" ]
then
INTERVAL=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Interval is $INTERVAL seconds" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^agent_name'`" ]
then
NOMBRE_HOST=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Agent name is $NOMBRE_HOST " >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^debug'`" ]
then
DEBUG_MODE=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Debug mode is $DEBUG_MODE " >> $PANDORA_LOGFILE
# Contribution of daggett
elif [ ! -z "`echo $a | grep -e '^server_port'`" ]
then
SERVER_PORT=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Server Port is $SERVER_PORT" >> $PANDORA_LOGFILE
# Contribution of daggett
elif [ ! -z "`echo $a | grep -e '^encoding'`" ]
then
ENCODING=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Encoding is $ENCODING" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^transfer_mode'`" ]
then
TRANSFER_MODE=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Transfer Mode is $TRANSFER_MODE" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^delayed_startup'`" ]
then
DELAYED_STARTUP=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - DELAYED_STARTUP is $DELAYED_STARTUP" >> $PANDORA_LOGFILE
# CPU protection
elif [ ! -z "`echo $a | grep -e '^pandora_nice'`" ]
then
PANDORA_NICE=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - PandoraFMS Nice is $PANDORA_NICE" >> $PANDORA_LOGFILE
# Tentacle options
elif [ ! -z "`echo $a | grep -e '^server_pwd'`" ]
then
SERVER_PWD=`echo $a | awk '{ print $2 }' `
if [ ! -z "$SERVER_PWD" ]
then
TENTACLE_OPTS="-x $SERVER_PWD $TENTACLE_OPTS"
echo "$TIMESTAMP - [SETUP] - Server password set (FTP/Tentacle)" >> $PANDORA_LOGFILE
fi
elif [ ! -z "`echo $a | grep -e '^server_ssl'`" ]
then
SERVER_SSL=`echo $a | awk '{ print $2 }' `
if [ "$SERVER_SSL" == "yes" ]
then
TENTACLE_OPTS="-c $TENTACLE_OPTS"
echo "$TIMESTAMP - [SETUP] - OpenSSL enabled for Tentacle" >> $PANDORA_LOGFILE
fi
elif [ ! -z "`echo $a | grep -e '^cron_mode'`" ]
then
CRON_MODE=1
echo "$TIMESTAMP - [SETUP] - Cronmode enabled" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^server_opts'`" ]
then
SERVER_OPTS=`echo $a | cut -d" " -f2-`
if [ ! -z "$SERVER_OPTS" ]
then
TENTACLE_OPTS="$SERVER_OPTS $TENTACLE_OPTS"
echo "$TIMESTAMP - [SETUP] - Extra options for the Tentacle client $SERVER_OPTS" >> $PANDORA_LOGFILE
fi
# Remote configuration
elif [ ! -z "`echo $a | grep -e '^remote_config'`" ]
then
REMOTE_CONFIG=`echo $a | awk '{ print $2 }'`
if [ "$REMOTE_CONFIG" == "1" ]
then
echo "$TIMESTAMP - [SETUP] - Remote configuration enabled" >> $PANDORA_LOGFILE
fi
# Secondary server configuration
elif [ ! -z "`echo $a | grep -e '^secondary_mode'`" ]
then
SECONDARY_MODE=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Secondary server mode is '$SECONDARY_MODE'" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^secondary_transfer_mode'`" ]
then
SECONDARY_TRANSFER_MODE=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Secondary transfer Mode is $SECONDARY_TRANSFER_MODE" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^secondary_server_ip'`" ]
then
SECONDARY_SERVER_IP=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Secondary server IP Address is $SECONDARY_SERVER_IP" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^secondary_server_path'`" ]
then
SECONDARY_SERVER_PATH=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Secondary server Path is $SECONDARY_SERVER_PATH" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^secondary_server_port'`" ]
then
SECONDARY_SERVER_PORT=`echo $a | awk '{ print $2 }' `
echo "$TIMESTAMP - [SETUP] - Secondary server Port is $SECONDARY_SERVER_PORT" >> $PANDORA_LOGFILE
elif [ ! -z "`echo $a | grep -e '^secondary_server_pwd'`" ]
then
SECONDARY_SERVER_PWD=`echo $a | awk '{ print $2 }' `
if [ ! -z "$SECONDARY_SERVER_PWD" ]
then
SECONDARY_TENTACLE_OPTS="-x $SECONDARY_SERVER_PWD $SECONDARY_TENTACLE_OPTS"
echo "$TIMESTAMP - [SETUP] - Secondary server password set (FTP/Tentacle)" >> $PANDORA_LOGFILE
fi
elif [ ! -z "`echo $a | grep -e '^secondary_server_ssl'`" ]
then
SECONDARY_SERVER_SSL=`echo $a | awk '{ print $2 }' `
if [ "$SECONDARY_SERVER_SSL" == "yes" ]
then
SECONDARY_TENTACLE_OPTS="-c $SECONDARY_TENTACLE_OPTS"
echo "$TIMESTAMP - [SETUP] - OpenSSL enabled for secondary Tentacle" >> $PANDORA_LOGFILE
fi
elif [ ! -z "`echo $a | grep -e '^secondary_server_opts'`" ]
then
SECONDARY_SERVER_OPTS=`echo $a | cut -d" " -f2-`
if [ ! -z "$SERVER_OPTS" ]
then
SECONDARY_TENTACLE_OPTS="$SECONDARY_SERVER_OPTS $SECONDARY_TENTACLE_OPTS"
echo "$TIMESTAMP - [SETUP] - Extra options for the secondary Tentacle client $SECONDARY_SERVER_OPTS" >> $PANDORA_LOGFILE
fi
# Agent description
elif [ ! -z "`echo $a | grep -e '^description'`" ]
then
AGENT_DESCRIPTION=`echo $a | cut -d" " -f2-`
# Agent group
elif [ ! -z "`echo $a | grep -e '^group'`" ]
then
AGENT_GROUP=`echo $a | cut -d" " -f2-`
# Agent autotime (use always current server time)
elif [ ! -z "`echo $a | grep -e '^autotime'`" ]
then
AGENT_AUTOTIME=`echo $a | cut -d" " -f2-`
fi
done
if [ "$CRON_MODE" == "0" ]
then
# Script banner at start
echo "Pandora FMS Agent $AGENT_VERSION (c) Pandora FMS 2003-2023"
echo "This program is licensed under GPL2 Terms. http://pandorafms.org"
echo "Running in $NOMBRE_HOST at $TIMESTAMP"
echo " "
else
# Checks if there is another instance running
PID_RUNNING=`pidof -x pandora_agent`
PID_ME=$$
if [ "$PID_ME" != "$PID_RUNNING" ]
then
echo "Aborting execution. Another instance of Pandora FMS running"
exit
fi
fi
# Make some checks
if [ "$DEBUG_MODE" == "1" ]
then
echo "(**) Warning: Running in DEBUG mode"
fi
if [ $DELAYED_STARTUP != 0 ]
then
echo "Delayed startup in $DELAYED_STARTUP minutes "
echo "Delayed startup in $DELAYED_STARTUP minutes" > $PANDORA_LOGFILE.err
echo " "
sleep $(($DELAYED_STARTUP*60))
fi
# Renice me
renice $PANDORA_NICE $$ 2> /dev/null > /dev/null
}
# **********************************************************************
# function send_file(file)
# Sends a file to the server.
# **********************************************************************
function send_file {
FILE="$1"
if [ "$TRANSFER_MODE" == "tentacle" ]
then
eval tentacle_client -v -a $SERVER_IP -p $SERVER_PORT $TENTACLE_OPTS $FILE > /dev/null 2> $PANDORA_LOGFILE.err
return $?
fi
if [ "$TRANSFER_MODE" == "ssh" ]
then
scp -P $SERVER_PORT $FILE pandora@$SERVER_IP:$SERVER_PATH > /dev/null 2> $PANDORA_LOGFILE.err
return $?
fi
if [ "$TRANSFER_MODE" == "ftp" ]
then
BASENAME=`basename $FILE`
DIRNAME=`dirname $FILE`
ftp -n $SERVER_IP $SERVER_PORT > /dev/null 2> $PANDORA_LOGFILE.err <<FEOF1
quote USER pandora
quote PASS $SERVER_PWD
lcd "$DIRNAME"
cd "$SERVER_PATH"
put "$BASENAME"
quit
FEOF1
return $?
fi
if [ "$TRANSFER_MODE" == "local" ]
then
cp $FILE $SERVER_PATH > /dev/null 2> $PANDORA_LOGFILE.err
return $?
fi
return 1
}
# **********************************************************************
# function send_file_secure(file)
# Sends the file to the available server.
# **********************************************************************
function send_file_secure {
FILE="$1"
send_file "$FILE"
RC=$?
# Always send the file to the secondary server
if [ "$SECONDARY_MODE" = "always" ]; then
switch_servers
send_file "$FILE"
switch_servers
# Send the file to the secondary server only if something went wrong
elif [ "$SECONDARY_MODE" = "on_error" ]; then
if [ $RC != 0 ]; then
switch_servers
send_file "$FILE"
RC=$?
switch_servers
fi
fi
return $RC
}
# **********************************************************************
# function recv_file(file)
# Gets a file from the server and saves it under $TEMP. Paths are not
# allowed.
# **********************************************************************
function recv_file {
FILE="$1"
if [ "$TRANSFER_MODE" == "tentacle" ]
then
WD=`pwd`
cd $TEMP
eval tentacle_client -v -g -a $SERVER_IP -p $SERVER_PORT $TENTACLE_OPTS $FILE > /dev/null 2> $PANDORA_LOGFILE.err
STATUS=$?
cd $WD
return $STATUS
fi
if [ "$TRANSFER_MODE" == "ssh" ]
then
scp -P $SERVER_PORT pandora@$SERVER_IP:$SERVER_PATH/$FILE $TEMP > /dev/null 2> $PANDORA_LOGFILE.err
return $?
fi
if [ "$TRANSFER_MODE" == "ftp" ]
then
ftp -n $SERVER_IP $SERVER_PORT > /dev/null 2> $PANDORA_LOGFILE.err <<FEOF1
quote USER pandora
quote PASS $SERVER_PWD
lcd "$TEMP"
cd "$SERVER_PATH"
get "$FILE"
quit
FEOF1
return $?
fi
if [ "$TRANSFER_MODE" == "local" ]
then
cp $SERVER_PATH/$FILE $TEMP > /dev/null 2> $PANDORA_LOGFILE.err
return $?
fi
return 1
}
# **********************************************************************
# function switch(var1, var2)
# Switches the values of var1 and var2
# **********************************************************************
function switch {
eval "TEMP=\"\$$1\""
eval "$1=\"\$$2\""
eval "$2=\"\$TEMP\""
}
# **********************************************************************
# function switch_servers()
# Switches the target server
# **********************************************************************
function switch_servers {
switch TRANSFER_MODE SECONDARY_TRANSFER_MODE
switch SERVER_IP SECONDARY_SERVER_IP
switch SERVER_PORT SECONDARY_SERVER_PORT
switch TENTACLE_OPTS SECONDARY_TENTACLE_OPTS
switch SERVER_PATH SECONDARY_SERVER_PATH
switch SERVER_PWD SECONDARY_SERVER_PWD
}
# **********************************************************************
# function check_remote_config()
# Checks for a newer remote configuration file.
# **********************************************************************
function check_remote_config {
if [ "$REMOTE_CONFIG" != "1" ]
then
return 1
fi
# Disabled in DEBUG mode
if [ "$DEBUG_MODE" == "1" ]
then
return 1
fi
# Agent name md5sum
AGENT_MD5=`echo -n $NOMBRE_HOST | md5sum | cut -d" " -f1`
CONFIG_FILE="$AGENT_MD5.conf"
MD5_FILE="$AGENT_MD5.md5"
# Local config file md5sum
CONFIG_MD5=`md5sum $PANDORA_HOME/pandora_agent.conf | cut -d" " -f1`
# Get remote config file md5sum
recv_file "$MD5_FILE"
# Configuration has not been uploaded to the server
if [ $? != 0 ]
then
echo "$TIMESTAMP - Uploading configuration for the first time" >> $PANDORA_LOGFILE
cp "$PANDORA_HOME/pandora_agent.conf" "$TEMP/$CONFIG_FILE"
echo "$CONFIG_MD5" > "$TEMP/$MD5_FILE"
send_file "$TEMP/$CONFIG_FILE"
send_file "$TEMP/$MD5_FILE"
rm -f "$TEMP/$CONFIG_FILE"
rm -f "$TEMP/$MD5_FILE"
return 0
fi
# Check for configuration changes
REMOTE_MD5=`cat $TEMP/$MD5_FILE`
rm -f "$TEMP/$MD5_FILE"
if [ "$REMOTE_MD5" == "$CONFIG_MD5" ]
then
return 0
fi
echo "$TIMESTAMP - Configuration has changed" >> $PANDORA_LOGFILE
recv_file "$CONFIG_FILE"
if [ $? != 0 ]
then
echo "$TIMESTAMP - Error retrieving configuration file" > $PANDORA_LOGFILE.err
return 1
fi
mv "$TEMP/$CONFIG_FILE" "$PANDORA_HOME/pandora_agent.conf"
# Reload configuration
configure_agent
return 0
}
# **********************************************************************
# Main
# **********************************************************************
if [ -z "$1" ]
then
echo " "
echo "Fatal error: I need an argument to Pandora FMS Agent config directory"
echo " "
echo " example: pandora_agent /etc/pandora"
echo " "
exit -1
else
PANDORA_HOME=$1
fi
if [ ! -f $PANDORA_HOME/pandora_agent.conf ]
then
echo " "
echo "FATAL ERROR: Cannot load $PANDORA_HOME/pandora_agent.conf"
echo " "
exit -1
fi
# Init internal variables
CONTADOR=0
EXECUTE=1
MODULE_END=0
TIMESTAMP=`date +"%Y/%m/%d %H:%M:%S"`
IFS=$'\n'
# Default values
DEBUG_MODE=0
DELAYED_STARTUP=0
SERVER_PORT=22
PANDORA_NICE=0
INTERVAL=300
TRANSFER_MODE=ssh
CRON_MODE=0
if [ -z "`echo $LANG | grep '\.'`" ]
then
ENCODING="UTF-8"
else
ENCODING=`echo $LANG | cut -f 2 -d "."`
fi
NOMBRE_HOST=`/bin/hostname`
OS_NAME=`uname -s`
PANDORA_LOGFILE=/var/log/pandora/pandora_agent.log
TEMP=/tmp
# Get Linux Distro type and version
if [ -f "/etc/SuSE-release" ]
then
OS_VERSION=`cat /etc/SuSE-release | grep VERSION | cut -f 3 -d " "`
LINUX_DISTRO=SUSE
else
if [ -f "/etc/lsb-release" ]
then
OS_VERSION=`cat /etc/lsb-release | grep DISTRIB_RELEASE | cut -f 2 -d "="`
LINUX_DISTRO=UBUNTU
OS_VERSION="UBUNTU $OS_VERSION"
else
if [ -f "/etc/debian_version" ]
then
OS_VERSION=`cat /etc/debian_version`
OS_VERSION="DEBIAN $OS_VERSION"
LINUX_DISTRO=DEBIAN
else
if [ -f "/etc/fedora-release" ]
then
OS_VERSION=`cat /etc/fedora-release | cut -f 4 -d " "`
OS_VERSION="FEDORA $OS_VERSION"
LINUX_DISTRO=FEDORA
else
LINUX_DISTRO=GENERIC
OS_VERSION=`uname -r`
fi
fi
fi
fi
# Configure this agent
configure_agent
# MAIN Program loop begin
while [ "1" == "1" ]
do
# Deleted debug / error info on each run to avoid giant logs
rm -Rf $PANDORA_LOGFILE.err 2> /dev/null
# Check for configuration changes if remote_config is enabled
check_remote_config
# Date and time, SERIAL is number of seconds since 1/1/1970, for every packet.
TIMESTAMP=`date +"%Y/%m/%d %H:%M:%S"`
SERIAL=`date +"%s"`
if [ "$AGENT_AUTOTIME" == "1" ]
then
TIMESTAMP="AUTO"
fi
# File names
DATA=$TEMP/$NOMBRE_HOST.$SERIAL.data
DATA2=$TEMP/$NOMBRE_HOST.$SERIAL.data_temp
# Makes data packet
echo "<?xml version=\"1.0\" encoding=\"$ENCODING\"?> " > $DATA
echo "<agent_data description='$AGENT_DESCRIPTION' group='$AGENT_GROUP' os_name='$OS_NAME' os_version='$OS_VERSION' interval='$INTERVAL' version='$AGENT_VERSION' timestamp='$TIMESTAMP' agent_name='$NOMBRE_HOST'>" >> $DATA
for a in `cat $PANDORA_HOME/pandora_agent.conf | grep -v -e "^#" | grep -e "^module" `
do
a=`echo $a | tr -s " " " "`
if [ ! -z "`echo $a | grep -e '^module_exec'`" ]
then
if [ $EXECUTE -eq 0 ]
then
execution=`echo $a | cut -c 13- `
res=`eval $execution`
if [ -z "$flux_string" ]
then
res=`eval expr $res 2> $PANDORA_LOGFILE.err`
fi
echo "<data><![CDATA[$res]]></data>" >> $DATA2
fi
fi
if [ ! -z "`echo $a | grep -e '^module_name'`" ]
then
name=`echo $a | cut -c 13- `
echo "<name><![CDATA[$name]]></name>" >> $DATA2
fi
if [ ! -z "`echo $a | grep -e '^module_begin'`" ]
then
echo "<module>" >> $DATA2
EXECUTE=0
fi
if [ ! -z "`echo $a | grep -e '^module_max' `" ]
then
max=`echo $a | awk '{ print $2 }' `
echo "<max><![CDATA[$max]]></max>" >> $DATA2
fi
if [ ! -z "`echo $a | grep -e '^module_min'`" ]
then
min=`echo $a | awk '{ print $2 }' `
echo "<min><![CDATA[$min]]></min>" >> $DATA2
fi
if [ ! -z "`echo $a | grep -e '^module_description'`" ]
then
desc=`echo $a | cut -c 20- `
echo "<description><![CDATA[$desc]]></description>" >> $DATA2
fi
if [ ! -z "`echo $a | grep -e '^module_end'`" ]
then
echo "</module>" >> $DATA2
MODULE_END=1
else
MODULE_END=0
fi
if [ ! -z "`echo $a | grep -e '^module_type'`" ]
then
mtype=`echo $a | awk '{ print $2 }' `
if [ ! -z "`echo $mtype | grep 'generic_data_string'`" ] || [ ! -z "`echo $mtype | grep 'async_string'`" ]
then
flux_string=1
else
flux_string=0
unset flux_string
fi
echo "<type><![CDATA[$mtype]]></type>" >> $DATA2
fi
if [ ! -z "`echo $a | grep '^module_interval'`" ]
then
# Determine if execution is to be done
MODULEINTERVAL=`echo $a | awk '{ print $2 }'`
EXECUTE=`expr \( $CONTADOR + 1 \) % $MODULEINTERVAL`
fi
# Plugin execution
if [ ! -z "`echo $a | grep '^module_plugin'`" ]
then
PLUGIN=`echo $a | cut -d" " -f2`
PARAMS=`echo $a | cut -d" " -f3-`
if [ -f $PANDORA_HOME/plugins/$PLUGIN ]
then
eval $PANDORA_HOME/plugins/$PLUGIN $PARAMS >> $DATA
else
echo "$TIMESTAMP - Plugin $PANDORA_HOME/plugins/$PLUGIN not found" > $PANDORA_LOGFILE.err
fi
fi
# Module postprocess info
if [ ! -z "`echo $a | grep -e '^module_postprocess'`" ]
then
pprocess=`echo $a | cut -d" " -f2-`
echo "<post_process><![CDATA[$pprocess]]></post_process>" >> $DATA2
fi
# If module ends, and execute for this module is enabled
# then write
if [ $MODULE_END -eq 1 ]
then
if [ $EXECUTE -eq 0 ]
then
cat $DATA2 >> $DATA
fi
rm -Rf $DATA2 > /dev/null 2> /dev/null
fi
done
# Count number of agent runs
CONTADOR=`expr $CONTADOR + 1`
# Keep a limit of 100 for overflow reasons
if [ $CONTADOR -eq 100 ]
then
CONTADOR=0
fi
# Finish data packet
echo "</agent_data>" >> $DATA
echo "" >> $DATA
# Replace & chars in XML (should not to be any) to avoid syntax problems
sed "s/&/&amp;/g" $DATA > $TEMP/finalxml.tmp
rm -f $DATA
mv $TEMP/finalxml.tmp $DATA
if [ "$DEBUG_MODE" == "1" ]
then
echo "$TIMESTAMP - Finish writing XML $DATA" >> $PANDORA_LOGFILE
echo "(**) Data file is at $DATA - Exiting now"
echo " "
exit 0
fi
# Send packets to server and delete it
send_file_secure $DATA
# Delete data
rm -f $DATA > /dev/null 2> $PANDORA_LOGFILE.err
# Cron mode
if [ "$CRON_MODE" == "1" ]
then
exit
fi
# Go to bed :-)
sleep $INTERVAL
done
# This runs forever!