有时候回需要到ssh tunnel，手动使用ssh 创建这些并没有太大的问题，可是如果尝试开机启动，写个shell脚本并在rc.local里面运行这个脚本并不成功，原因也不得而知。

后来发现了autossh这东东，不单单能够静默模式创建ssh tunnel还能设置自动检测，并自动尝试链接的选项。

本文附件提供的脚本，需要放置在/etc/ini.d/目录下，并使用chmod +x 修改权限。然后也有必要使用update-rc.d service defaults添加入开机启动服务。

当然不要忘记修改脚本中的配置信息。

然后就能够在开机时候自动创建ssh tunnel了。 enjoy it.

#! /bin/bash# For each tunnel; make a uniquely named copy of this template.## SETTINGS
#
# autossh monitoring port (unique)
MPORT=54321
# the ssh tunnel to setup
TUNNEL="-L 2003:localhost:2003"
# remote user
RUSER="socieer"
# remote server
RSERVER="socieer.axxeo.de"
# You must use the real autossh binary, not a wrapper.
DAEMON=/usr/lib/autossh/autossh
#
## END SETTINGSPATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/binNAME=`basename $0`
PIDFILE=/var/run/${NAME}.pid
SCRIPTNAME=/etc/init.d/${NAME}
DESC="the tunnel"test -x $DAEMON || exit 0export AUTOSSH_PORT=${MPORT}
export AUTOSSH_PIDFILE=${PIDFILE}
ASOPT=${TUNNEL}" -f -N "${RUSER}"@"${RSERVER}#  Function that starts the daemon/service.
d_start() {start-stop-daemon --start --quiet --pidfile $PIDFILE \--exec $DAEMON -- $ASOPTif [ $? -gt 0 ]; thenecho -n " not started (or already running)"elsesleep 1start-stop-daemon --stop --quiet --pidfile $PIDFILE \--test --exec $DAEMON > /dev/null || echo -n " not started"fi}#  Function that stops the daemon/service.
d_stop() {start-stop-daemon --stop --quiet --pidfile $PIDFILE \--exec $DAEMON \|| echo -n " not running"
}case "$1" instart)echo -n "Starting $DESC: $NAME"d_startecho ".";;stop)echo -n "Stopping $DESC: $NAME"d_stopecho ".";;restart)echo -n "Restarting $DESC: $NAME"d_stopsleep 1d_startecho ".";;*)echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2exit 3;;
esacexit 0