After a few hours of work today, I have all this working
perfectly. I'm
using autossh to automatically create and monitor the ssh tunnel,
and I
can make mysql connections through the tunnel with no problems.
Very cool.
And that's through PF firewalls on both machines, which added
flavor to
the exercise ;-)
One question... and maybe this is a general, philosophical
question...
If autossh watches over my ssh tunnel, who or what watches over
autossh?
As a related question, how can I make autossh start automatically
after
a reboot? At the moment, I start autossh from the command line,
like so:
autossh -M 2 -fNg -L 33006:127.0.0.1:3306 [EMAIL PROTECTED]
There doesn't seem to be an rc.d file for autossh... Do I have to
figure
out how to make one?
You can do this all by not using autossh at all: let init watch and
re-establish your ssh tunnel:
This is in my /etc/ttys (wrapped for readability):
ttyv8 /usr/bin/ssh -l syslogng -nNTx -R 3306:local.domain.tld:3306
remote.domain.tld /dev/null 21unknown on
I let my central machine control the tunnel, not the sending one.
H'mmm... This is new territory for me. I've just read some of the man
pages and a few pages in Absolute BSD, and I guess I sort of
understand what this does. I'm trying to grasp the connection between
virtual terminals and this SSH tunnel...
I guess my main question is, if I start the tunnel with this method,
will I be able to access mysql in 'the usual way'? The following
works with my autossh tunnel:
mysql -h127.0.0.1 -P33006 -uuser -ppassword db
So, if using the /etc/ttys file is equivalent, and I make the
connection on the database server, rather than the client server,
then I guess my ttys file should look like this (my ttyv8 is already
used... I am guessing I should use the next one down):
ttyv7 /usr/bin/ssh -l admin -nNTx -R 3306:127.0.0.1:33006
example.com /dev/null 21unknown on
Where 'admin' is the user I am logging into on the remote machine,
and 'example.com' is the hostname of the remote machine. I guess
equivalent to the following?
ttyv7 /usr/bin/ssh -nNTx -R 3306:127.0.0.1:33006 [EMAIL PROTECTED]
/dev/null 21unknown on
Port 33006 is not a typo. There are databases running on both
machines, so I need to use a different port for the tunnel.
And as far as I can tell, I reload /etc/ttys with 'kill -1 1'.
This looks dangerous...
-- John
Websites and Marketing for On-line Collectible Dealers
Identry, LLC
John Almberg
(631) 546-5079
[EMAIL PROTECTED]
www.identry.com
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]
