[webmin-l] VirtualMin Errors after server move

[Pablo M. <pab...@gm...>]

Hello List:

I am having a weird issue with virtualmin. (Webmin 1.290 Virtualmin
3.190.gpl running under Centos 3.7). You will see below the first
message and two updates.



Server was running virtualmin ok with 8 domains in it with several
users each domain. For some very specific reason we were forced to
move to a different server, and after the move virtualmin stopped
working.
This is a list of errors:

After pressing "Save Virtual Server" in edit_domain.cgi, i receive a
blank page in the frame i should be receiving the "Modifying Unix user
.... done...Saving server details .." stuff.

When in the virtual server list, i select the "List" link (to display
users) i am prompted to download list_users.cgi.

After pressing "Create Server" in domain_form.cgi, i am prompted to
download domain_setup.cgi.

In some way, the issue seems to be related to config files, but the
same config files gziped and moved again to old server, do not give
errors.

I have reinstalled webmin and virtualmin at least three times.
Unfortunately i cannot play with existing users because it is a live
site, but i wonder if the issue may be related to /etc/passwd.

I have restored configure files using backup/restore and copying
/etc/webmin from old to new server.

I have checked logs for apache and webmin error logs and no
significatives entries are there.

UPDATE

After some insane debugging i have found this:

If i comment the line:

@dbu = &$dfunc($_[0], $db->{'name'});

In virtual-server-lib.pl, so it is like:

if (&indexof($db->{'type'}, @database_plugins) < 0) {
                       # Core database
                       local $dfunc = "list_".$db->{'type'}."_database_users";
                       next if (!defined(&$dfunc));
                       $ufunc = $db->{'type'}."_username";
                       #@dbu = &$dfunc($_[0], $db->{'name'});
                       }

the errors related to users are gone, and i can manage them properly.
The error creating servers remains. My next step is to find the line
causing the error so i can add domains properly, but i need to ask if
anyone has a clue about how could this happens. It seems to be related
to mysql plugin (which was installed previously but deleted after
updating virtualmin). But the same config files are working ok in old
server.
Well, it seems if i configure a virtual server without mysql geatuire
enabled, everything goes ok.

UPDATE 2:
I have uninstalled webmin / virtualmin and deleted every reference to it .
Reinstalled webmin and virtualmin (3.201)

Then i started from 0 importing virtual servers. I imported first
domain without MySQL database enabled. and importing was ok.

Second website was imported with MySQL database option enabled, and
two databases specified. Importing process was ok and domain is in the
list. But when i select the option to list users,  i am prompted for
downloading list_users.cgi again. (that does not happens in first
domain).

Also i have noticed scheduled backups stopped. running it from command
line i get:

[root@xxxxxx]# /etc/webmin/virtual-server/backup.pl
Segmentation fault

strace returns:

write(5, "\231\0\0\0\3select user.user,user.passw"..., 157) = 157
read(5, "\1\0\0\1", 4)                  = 4
read(5, "\2", 1)                        = 1
read(5, "+\0\0\2", 4)                   = 4
read(5, "\3def\5mysql\4user\4user\4user\4User\f\10"..., 43) = 43
read(5, "3\0\0\3", 4)                   = 4
read(5, "\3def\5mysql\4user\4user\10password\10Pa"..., 51) = 51
read(5, "\1\0\0\4", 4)                  = 4
read(5, "\376", 1)                      = 1
read(5, "\"\0\0\5", 4)                  = 4
read(5, "\20xxxxxxxxx\020395128db0b2a93"..., 34) = 34
read(5, "\5\0\0\6", 4)                  = 4
read(5, "\376\0\0\"\0", 5)              = 5
fcntl64(5, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
read(5, 0xc7206a0, 8192)                = -1 EAGAIN (Resource
temporarily unavailable)
fcntl64(5, F_SETFL, O_RDWR)             = 0
write(5, "\1\0\0\0\1", 5)               = 5
shutdown(5, 2 /* send and receive */)   = 0
close(5)                                = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

SO it seems i am really having issues with mysql feature, but mysql is
working ok outside webmin / virtualmin and even webmin mysql module is
working ok.

I am pretty lost and any hint will be appreciated.

Regards.

Pablo