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Commit 240b7b3a authored by Gerhard's avatar Gerhard
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initial import of version 0.6.0

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ssh-tunnel-manager.conf 0 → 100644
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View file @ 240b7b3a
#
#
# @author Gerhard Steinbeis (info [at] tinned-software [dot] net)
# @copyright Copyright (c) 2013
# @license http://opensource.org/licenses/GPL-3.0 GNU General Public License, version 3
# @package net
#
# Configuration file for the ssh-tunnel-manager script. Default location for
# the config file is /etc/ssh-tunnel-manager.conf
#
#
# Ths TUNNEL array is used to configure the individual tunnels. Each
# configuration entry needs to follow the SSH options. An example of
# how such a configuration line might look like is listed here.
#
TUNNELS=(
"-p 1234 username@host1.example.com -L 10001:127.0.0.1:3306 -L 10011:127.0.0.1:27017"
"-p 1234 username@host2.example.com -L 10002:127.0.0.1:3306 -L 10012:127.0.0.1:27017"
)
#
# The RECONNECT_TIMER is used in case of a tunnel connection to be lost. After
# the script is detecting that the connection was lost, the time defined the
# time to wait before the the script tries to reconnect the tunnel.
#
RECONNECT_TIMER=10
#
# The LOGFILE setting defines the path of the logfile. You have the possibility to use
# the $SCRIPT_PATH variable to define the path of the logfile to be the same
# as the script directory.
#
LOGFILE="$SCRIPT_PATH/$0.log"
#
# This DBG setting is adding additional details to the logfile. The values are 0
# to hide the extra log content and 1 to show it.
#
DBG=0
ssh-tunnel-manager.sh 0 → 100755
+ 324
− 0
View file @ 240b7b3a
#!/bin/bash
#
# @author Gerhard Steinbeis (info [at] tinned-software [dot] net)
# @copyright Copyright (c) 2013
version=0.6.0
# @license http://opensource.org/licenses/GPL-3.0 GNU General Public License, version 3
# @package net
#
#
# Ths TUNNEL array is used to configure the individual tunnels. Each
# configuration entry needs to follow the SSH options. An example of
# how such a configuration line might look like is listed here.
#
# TUNNELS=(
# "-p 1234 username@host1.example.com -L 10001:127.0.0.1:3306 -L 10011:127.0.0.1:27017"
# "-p 1234 username@host2.example.com -L 10002:127.0.0.1:3306 -L 10012:127.0.0.1:27017"
#)
#
# The RECONNECT_TIMER is used in case of a tunnel connection to be lost. After
# the script is detecting that the connection was lost, the time defined the
# time to wait before the the script tries to reconnect the tunnel.
#
RECONNECT_TIMER=10
#
# The LOGFILE setting defines the path of the logfile. You have the possibility to use
# the $SCRIPT_PATH variable to define the path of the logfile to be the same
# as the script directory.
#
LOGFILE=""
#
# This DBG setting is adding additional details to the logfile. The values are 0
# to hide the extra log content and 1 to show it.
#
DBG=0
#
# Default configuration file to load settings from can be defined here.
#
DEFAULT_CONFIG="/etc/ssh-tunnel-manager.conf"
#
# Non Config values
#
# Get script directory
SCRIPT_PATH="$(cd $(dirname $0);pwd -P)"
LOGFILE="$SCRIPT_PATH/$0.log"
#
# Parse all parameters
#
HELP=0
TERMINATE=0
while [ $# -gt 0 ]; do
case $1 in
# General parameter
-h|--help)
HELP=1
shift
;;
-v|--version)
echo
echo "Copyright (c) 2013 Tinned-Software (Gerhard Steinbeis)"
echo "License GNUv3: GNU General Public License version 3 <http://opensource.org/licenses/GPL-3.0>"
echo
echo "`basename $0` version $version"
echo
exit 0
;;
# specific parameters
--config)
# load settings file
. $2
CONFIG_FILE=$2
CONFIG_LOADED=1
shift 2
;;
# specific parameters
start)
COMMAND='start'
shift
;;
stop)
COMMAND='stop'
shift
;;
restart)
COMMAND='restart'
shift
;;
status)
COMMAND='status'
shift
;;
show)
COMMAND='show'
shift
;;
manage)
COMMAND='manage'
INDEX=$2
shift 2
;;
# undefined parameter
*)
echo "Unknown option '$1'"
HELP=1
shift
break
;;
esac
done
# check if a command has been provided
if [[ -z "${COMMAND}" ]]; then
if [ "$HELP" -ne "1" ]; then
echo "ERROR: No command defined in parameter list."
HELP=1
fi
fi
# Load the default configuration file if no other configuration file is provided
if [[ -z "$CONFIG_LOADED" ]]; then
# Check if configuration file exists
if [[ -f "$DEFAULT_CONFIG" ]]; then
. $DEFAULT_CONFIG
CONFIG_FILE=$DEFAULT_CONFIG
fi
fi
# check if a tunnel configuration has been provided
if [[ "${#TUNNELS[@]}" -lt "1" && ! -z "${COMMAND}" ]]; then
if [ "$HELP" -ne "1" ]; then
echo "ERROR: No tunnel configuration found."
HELP=1
fi
fi
# show help message
if [ "$HELP" -eq "1" ]; then
echo
echo "Copyright (c) 2013 Tinned-Software (Gerhard Steinbeis)"
echo "License GNUv3: GNU General Public License version 3 <http://opensource.org/licenses/GPL-3.0>"
echo
echo "This script is used to setup multiple ssh tunnels and manage to keep "
echo "them alive. This script will launch monitoring instances to keep the "
echo "individual tunnels alive. See the configuration file for more details "
echo "about the configuration."
echo
echo "Usage: `basename $0` [-hv] [--config filename.conf] [start|stop|status|restart]"
echo " -h --help print this usage and exit"
echo " -v --version print version information and exit"
echo " --config Configuration file to read parameters from"
echo " start Start the ssh tunnels configured"
echo " stop Stop the ssh tunnels configured"
echo " status Check the status of the ssh tunnels configured"
echo " show Show the ssh tunnels configured"
echo " restart Restart the ssh tunnels configured"
echo
exit 1
fi
#
# Function to print out a string including a time and date info at the
# beginning of the line. If the string is empty, only the timestamp is printed
# out.
#
# @param $1 The string to print out
# @param $2 (optional) Option to echo like ">>logfile.log"
#
function echotime {
TIME=`date "+[%Y-%m-%d %H:%M:%S]"`
echo -e "$TIME - $@" >>$LOGFILE
}
# Execute function signal_terminate() receiving TERM signal
#
# Function to print out a string including a time and date info at the
# beginning of the line. If the string is empty, only the timestamp is printed
# out.
#
# @param $1 The string to print out
# @param $2 (optional) Option to echo like ">>logfile.log"
#
function signal_terminate {
echotime "MANAGER - Received TERM for tunnel ID $INDEX"
TERMINATE=1
}
trap 'signal_terminate' TERM
SCRIPT_PID=$$
#
# start procedure according to the action
#
case $COMMAND in
restart)
echotime "COMM - Execute RESTART procedure ... "
$0 --config $CONFIG_FILE stop
sleep 2
$0 --config $CONFIG_FILE start
echotime "COMM - Execute RESTART procedure ... Done"
echotime ""
;;
stop)
echotime "COMM - Execute STOP procedure ... "
for (( idx=0; idx<${#TUNNELS[@]}; idx++ ));
do
# notify "manage" script of terminate request. This avoids the restart of the tunnel
RESULT_PID=`ps aux | grep -v grep | grep "$0 --config $CONFIG_FILE manage $idx" | awk '{print $2}' | tr '\n' ' '`
[ "$DBG" -gt "0" ] && echotime "STOP - *** DBG-CMD: ps aux | grep -v grep | grep \"$0 --config $CONFIG_FILE manage $idx\" | awk '{print \$2}'"
for PID in $RESULT_PID; do
kill $PID &>/dev/null
done
echotime "STOP - Stop sent manager of tunnel ID $idx ... PID: $RESULT_PID"
# Terminate the ssh tunnel processes.
RESULT_PID=`ps aux | grep -v grep | grep "ssh -N ${TUNNELS[$idx]}" | awk '{print $2}' | tr '\n' ' '`
[ "$DBG" -gt "0" ] && echotime "STOP - *** DBG-CMD: ps aux | grep -v grep | grep \"ssh -N ${TUNNELS[$idx]}\" | awk '{print \$2}'"
for PID in $RESULT_PID; do
kill $PID &>/dev/null
done
echotime "STOP - Stopped tunnel ID $idx ... PID: $RESULT_PID"
# check if the tunnels really down
sleep "0.3"
TUNNELS_COUNT=0
TMANAGER_COUNT=0
TUNNELS_COUNT=`ps aux | grep -v grep | grep "ssh -N ${TUNNELS[$idx]}" | awk '{print $2}' | wc -l`
TMANAGER_COUNT=`ps aux | grep -v grep | grep "$0 --config $CONFIG_FILE manage $idx" | awk '{print $2}' | wc -l`
if [[ "$TUNNELS_COUNT" -lt "1" ]] && [[ "$TUNNELS_COUNT" -lt "1" ]]; then
echo "Stopping tunnel ID $idx ... Done"
else
echo "Stopping tunnel ID $idx ... Failed"
fi
done
echotime "COMM - Execute STOP procedure ... Done"
echotime ""
;;
status)
echotime "COMM - Execute STATUS procedure ... "
for (( idx=0; idx<${#TUNNELS[@]}; idx++ ));
do
# get the list of processs
RESULT=0
RESULT=`ps aux | grep -v grep | grep "ssh -N ${TUNNELS[$idx]}" | wc -l`
# show the result
if [[ "$RESULT" -gt "0" ]]; then
echotime "STATUS - Status of Tunnel ID $idx is ... running"
echo "Status of Tunnel ID $idx is ... running"
else
echotime "STATUS - Status of Tunnel ID $idx is ... NOT running"
echo "Status of Tunnel ID $idx is ... NOT running"
fi
done
echotime "COMM - Execute STATUS procedure ... Done"
echotime ""
;;
show)
for (( idx=0; idx<${#TUNNELS[@]}; idx++ ));
do
# show the tunnel config
echo "Configuration of Tunnel ID $idx ... ${TUNNELS[$idx]}"
done
;;
start)
echotime "COMM - Execute START procedure ... "
for (( idx=0; idx<${#TUNNELS[@]}; idx++ ));
do
RESULT_PID=0
RESULT_PID=`ps aux | grep -v grep | grep "$0 --config $CONFIG_FILE manage $idx" | awk '{print $2}' | tr '\n' ' '`
if [[ ! -z $RESULT_PID ]]; then
echotime "START - Already running tunnel ID $idx ... PID: $RESULT_PID"
echo "Starting tunnel ID $idx ... Already running"
else
$0 --config $CONFIG_FILE manage $idx &
sleep "0.2"
RESULT_PID=`ps aux | grep -v grep | grep "$0 --config $CONFIG_FILE manage $idx" | awk '{print $2}' | tr '\n' ' '`
[ "$DBG" -gt "0" ] && echotime "START - *** DBG-CMD: ps aux | grep -v grep | grep \"$0 --config $CONFIG_FILE manage $idx\" | awk '{print \$2}'"
echotime "START - Starting tunnel ID $idx ... PID: $RESULT_PID"
echo "Starting tunnel ID $idx ... Done"
fi
# sleep before every cycle to aviod overloading
done
echotime "COMM - Execute START procedure ... Done"
echotime ""
;;
manage)
echotime "MANAGE - Connecting tunnel ID $INDEX with parameters ... ${TUNNELS[$INDEX]}"
while [ "$TERMINATE" -eq "0" ]
do
SSH_RESULT=`ssh -N ${TUNNELS[$INDEX]} 2>&1`
if [[ "$TERMINATE" -eq "0" ]]; then
echotime "MANAGE - Detected tunnel ID $INDEX disconnected. $SSH_RESULT"
sleep $RECONNECT_TIMER
echotime "MANAGE - Reconnecting tunnel ID $INDEX with parameters ... ${TUNNELS[$INDEX]}"
else
echotime "MANAGE - Shutdown manager for tunnel ID $INDEX"
fi
done
;;
esac
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