[ naviserver-Bugs-1231853 ] Incomplete config file leading server to unusable state

[SourceForge.net <no...@so...>]

Bugs item #1231853, was opened at 2005-07-03 11:14
Message generated for change (Comment added) made by sdeasey
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=719006&aid=1231853&group_id=130646

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: None
Group: Current
Status: Open
Resolution: None
Priority: 5
Submitted By: Bernd Eidenschink (eide)
>Assigned to: Stephen Deasey (sdeasey)
Summary: Incomplete config file leading server to unusable state

Initial Comment:
I'm not 100% sure if this behaviour should be classified as Bug, 
lets see.

I found that at a bare minimum the server needs something like 
this to start:

---------------------------------------------------

set servername "server1"
set serverdesc "My first server"
set homedir    [file dirname [ns_info config]]

ns_section "ns/servers"
ns_param   $servername     $serverdesc

ns_section "ns/parameters"
ns_param   home            $homedir

---------------------------------------------------

when starting the server with:
./nsd -u nsadmin -g www -f -t ../smallest-config.tcl

it says (timestamps and threadinfo deleted):

[-main-] Notice: nsmain: NaviServer/4.99.0 starting
[-main-] Notice: nsmain: security info: uid=1003, euid=1003, 
gid=8, egid=8
[-main-] Notice: nsmain: max files: FD_SETSIZE = 1024, rl_cur = 
1024, rl_max = 1024
[-main-] Notice: conf: [ns/server/server1]enabletclpages = 0
[-main-] Notice: nsmain: NaviServer/4.99.0 running
[-main-] Notice: nsmain: security info: uid=1003, euid=1003, 
gid=8, egid=8

and waits. It's visible in the process list (ps shows 2 threads), but 
not binding to a port ('lsof -i' shows no nsd).

When stopping the Server with Ctrl-C:

[-main-] Notice: nsmain: NaviServer/4.99.0 stopping
[-main-] Notice: driver: triggering shutdown
[-main-] Fatal: driver: trigger send() failed: Socket operation on 
non-socket

If it is not considered to be a bug there should at least be some log 
notice like: "Hint: You may have to specify... " or "Incomplete 
Configuration...." or not start at all.


----------------------------------------------------------------------

>Comment By: Stephen Deasey (sdeasey)
Date: 2005-07-08 06:01

Message:
Logged In: YES 
user_id=87254


That's what I was wondering, does anyone have a use for
this?  4 it is then, the server will log a warning if no
drivers are configured.  I'll add this.


----------------------------------------------------------------------

Comment By: Zoran Vasiljevic (vasiljevic)
Date: 2005-07-07 01:07

Message:
Logged In: YES 
user_id=95086

The option of 4 is actually OK. I can cook up an application with
Tcl using NS as MT-app server having no visible network connections.
I would not stop the server if no drivers are loaded, but a warning log
seems OK.

----------------------------------------------------------------------

Comment By: Bernd Eidenschink (eide)
Date: 2005-07-06 04:23

Message:
Logged In: YES 
user_id=197910

Hm, I tend to Option (3); But just because I can't imagine 
a use case for (4), is there? 
 
Or is it then just a tclsh gone wild? 
 

----------------------------------------------------------------------

Comment By: Stephen Deasey (sdeasey)
Date: 2005-07-06 03:45

Message:
Logged In: YES 
user_id=87254

If the only configured driver fails to bind an error is
logged but the server starts successfully.

I'm not sure how useful a naviserver with no listening
drivers is..?

But you're right, not specifying any drivers should not
leave the server in limbo -- it should either start or it
should fail.

So here's some options:

1) not specifying any drivers is a fatal error
2) not specifying any drivers is ok (log warning?)
3) no listening drivers for any reason is a fatal error
4) no listening drivers is ok (log warning?)

I think maybe option 4, with a warning.


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=719006&aid=1231853&group_id=130646