Thanks Andy for the response!
After stopping all the SSH services, I restarted the external ssh by the
command
/etc/init.d/ext_ssh start
and as you said, ext_ssh is listening on the private IP address.
I am attaching the ssh, ext_ssh and external_ssh_config files.
Also the output for command used to start the external sshd process:
ps -ef | grep sshd
is not as you said.
Hope this helps to figure out the problem!
On Fri, May 14, 2010 at 11:22 AM, Andy Kurth andy_ku...@ncsu.edu wrote:
Assuming you have a way to access the console without SSH, try stopping all
sshd processes and then start ext_sshd. Check which address it's listening
on:
netstat -l -n | grep ':22'
You should see something like:
tcp 0 0 IP address:22 0.0.0.0:* LISTEN
If it's listening on the private address, then there's a problem with
either the ext_sshd script or /etc/ssh/external_sshd_config. Please include
the contents of these files.
If it's listening on the public address and you still can't connect, check
the firewall.
Also check the command used to start the external sshd process:
ps -ef | grep sshd
You should see something like:
/usr/sbin/sshd -f /etc/ssh/external_sshd_config
Hope this helps,
Andy
Kiran N wrote:
Hello All,
I am trying to create an Ubuntu base image. I have followed the
instructions
as given in
https://cwiki.apache.org/VCL/create-a-linux-base-image.html
I am able to ssh on the private network(eth1) from my management node but
I
am unable to ssh on the public network(eth0).
I start my ssh on public interface by /etc/init.d/ext_ssh start and it
shows
a message saying SSH started successfully but actually there is no ssh
port
which listens on public interface. Hence I am unable to ssh remotely.
Are there any extra changes to be made for an ubuntu base image? Any input
will be helpful!
--
Thanks,
Kiran
#! /bin/sh
### BEGIN INIT INFO
# Provides: ext_ssh
# Required-Start: $remote_fs $syslog
# Required-Stop:$remote_fs $syslog
# Default-Start:2 3 4 5
# Default-Stop: 1
# Short-Description:OpenBSD Secure Shell server
### END INIT INFO
set -e
OPTIONS='-f /etc/ssh/external_sshd_config'
PID_FILE=/var/run/ext_sshd.pid
# /etc/init.d/ssh: start and stop the OpenBSD secure shell(tm) daemon
test -x /usr/sbin/ext_ssh || exit 0
( /usr/sbin/ext_ssh -\? 21 | grep -q OpenSSH ) 2/dev/null || exit 0
export SSHD_OOM_ADJUST=-17
if test -f /etc/default/ext_ssh; then
. /etc/default/ext_ssh
fi
# Are we in a virtual environment that doesn't support modifying
# /proc/self/oom_adj?
if grep -q 'envID:.*[1-9]' /proc/self/status; then
unset SSHD_OOM_ADJUST
fi
. /lib/lsb/init-functions
if [ -n $2 ]; then
SSHD_OPTS=$SSHD_OPTS $2
fi
# Are we running from init?
run_by_init() {
([ $previous ] [ $runlevel ]) || [ $runlevel = S ]
}
check_for_no_start() {
# forget it if we're trying to start, and /etc/ssh/sshd_not_to_be_run exists
if [ -e /etc/ssh/sshd_not_to_be_run ]; then
if [ $1 = log_end_msg ]; then
log_end_msg 0
fi
if ! run_by_init; then
log_action_msg OpenBSD Secure Shell server not in use
(/etc/ssh/sshd_not_to_be_run)
fi
exit 0
fi
}
check_dev_null() {
if [ ! -c /dev/null ]; then
if [ $1 = log_end_msg ]; then
log_end_msg 1 || true
fi
if ! run_by_init; then
log_action_msg /dev/null is not a character device!
fi
exit 1
fi
}
check_privsep_dir() {
# Create the PrivSep empty dir if necessary
if [ ! -d /var/run/ext_ssh ]; then
mkdir /var/run/ext_ssh
chmod 0755 /var/run/ext_ssh
fi
}
check_config() {
if [ ! -e /etc/ssh/sshd_not_to_be_run ]; then
/usr/sbin/ext_ssh -t || exit 1
fi
}
export PATH=${PATH:+$PATH:}/usr/sbin:/sbin
case $1 in
start)
check_privsep_dir
check_for_no_start
check_dev_null
log_daemon_msg Starting OpenBSD Secure Shell server ext_ssh
if start-stop-daemon --start --quiet --oknodo --pidfile
/var/run/ext_ssh.pid --exec /usr/sbin/ext_ssh -- $SSHD_OPTS; then
log_end_msg 0
else
log_end_msg 1
fi
;;
stop)
log_daemon_msg Stopping OpenBSD Secure Shell server ext_ssh
if start-stop-daemon --stop --quiet --oknodo --pidfile
/var/run/ext_ssh.pid; then
log_end_msg 0
else
log_end_msg 1
fi
;;
reload|force-reload)
check_for_no_start
check_config
log_daemon_msg Reloading OpenBSD Secure Shell server's configuration
ext_ssh
if start-stop-daemon --stop --signal 1 --quiet --oknodo --pidfile
/var/run/ext_ssh.pid --exec /usr/sbin/ext_ssh; then
log_end_msg 0
else
log_end_msg 1
fi
;;
restart)
check_privsep_dir
check_config
log_daemon_msg Restarting OpenBSD
