Tengo problemas para conectarme a mi Microsoft SQL Server 2005 desde un equipo Red Hat usando freetds. Mi objetivo final es poder conectarme usando el PDO de PHP, pero parece que no puedo conectarme cuando pruebo usando "tsql".
No creo que sea un problema de firewall, ya que puedo hacer telnet sin problemas.
$ telnet <ip> 1433
Trying <ip>...
Connected to <ip>.
Escape character is '^]'.
Al ejecutar el siguiente comando se obtiene lo siguiente:
$ TDSVER=7.1 tsql -H <ip> -p 1433 -U <user> -P <pass>
locale is "en_US.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
5Error 20003 (severity 6):
Adaptive Server connection timed out
OS error 115, "Operation now in progress"
Error 20002 (severity 9):
Adaptive Server connection failed
There was a problem connecting to the server
Creo que esta es la configuración correcta porque si ejecuto el mismo comando en mi máquina Debian local, parece tener éxito.
$ TDSVER=7.1 tsql -H <ip> -p 1433 -U <user> -P <pass>
locale is "en_US.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
1>
Intenté conectarme configurando "TDSVER=7.0", "TDSVER=7.2", "TDSVER=8.0" y no funcionan.
Aquí está el registro de errores:
09:50:45.013838 17363 (log.c:196):Starting log file for FreeTDS 0.91
on 2014-05-09 09:50:45 with debug flags 0xffff.
09:50:45.014138 17363 (iconv.c:330):tds_iconv_open(0x18e63e0, UTF-8)
09:50:45.014334 17363 (iconv.c:187):local name for ISO-8859-1 is ISO-8859-1
09:50:45.014349 17363 (iconv.c:187):local name for UTF-8 is UTF-8
09:50:45.014354 17363 (iconv.c:187):local name for UCS-2LE is UCS-2LE
09:50:45.014358 17363 (iconv.c:187):local name for UCS-2BE is UCS-2BE
09:50:45.014362 17363 (iconv.c:349):setting up conversions for client charset "UTF-8"
09:50:45.014366 17363 (iconv.c:351):preparing iconv for "UTF-8" <-> "UCS-2LE" conversion
09:50:45.014376 17363 (iconv.c:391):preparing iconv for "ISO-8859-1" <-> "UCS-2LE" conversion
09:50:45.014389 17363 (iconv.c:394):tds_iconv_open: done
09:50:45.014400 17363 (net.c:205):Connecting to <ip> port 1433 (TDS version 7.1)
09:50:45.014577 17363 (net.c:270):tds_open_socket: connect(2) returned "Operation now in progress"
09:50:45.019725 17363 (net.c:310):tds_open_socket() succeeded
09:50:45.019751 17363 (util.c:156):Changed query state from DEAD to IDLE
09:50:45.019767 17363 (net.c:741):Sending packet
<censored>
09:50:50.021625 17363 (util.c:331):tdserror(0x18e6140, 0x18e63e0, 20003, 115)
09:50:50.021743 17363 (util.c:361):tdserror: client library returned TDS_INT_CANCEL(2)
09:50:50.021751 17363 (util.c:384):tdserror: returning TDS_INT_CANCEL(2)
09:50:50.021796 17363 (util.c:156):Changed query state from IDLE to DEAD
09:50:50.021808 17363 (login.c:466):login packet rejected
09:50:50.021813 17363 (util.c:331):tdserror(0x18e6140, 0x18e63e0, 20002, 0)
09:50:50.021823 17363 (util.c:361):tdserror: client library returned TDS_INT_CANCEL(2)
09:50:50.021828 17363 (util.c:384):tdserror: returning TDS_INT_CANCEL(2)
09:50:50.021833 17363 (mem.c:615):tds_free_all_results()
Aquí está mi archivo /etc/freetds.conf
# $Id: freetds.conf,v 1.12 2007/12/25 06:02:36 jklowden Exp $
#
# This file is installed by FreeTDS if no file by the same
# name is found in the installation directory.
#
# For information about the layout of this file and its settings,
# see the freetds.conf manpage "man freetds.conf".
# Global settings are overridden by those in a database
# server specific section
[global]
# TDS protocol version
tds version = 7.1
# Whether to write a TDSDUMP file for diagnostic purposes
# (setting this to /tmp is insecure on a multi-user system)
dump file = /tmp/freetds.log
debug flags = 0xffff
# Command and connection timeouts
timeout = 5
#connect timeout = 10
# If you get out-of-memory errors, it may mean that your client
# is trying to allocate a huge buffer for a TEXT field.
# Try setting 'text size' to a more reasonable limit
text size = 64512
# A typical Sybase server
#[egServer50]
# host = symachine.domain.com
# port = 5000
# tds version = 5.0
# A typical Microsoft server
#[egServer70]
# host = ntmachine.domain.com
# port = 1433
# tds version = 7.0
# Define a connection to the MSSQL server.
[mssql]
host = <ip>
port = 1433
tds version = 7.1
EDITAR:
Veo en la documentación gratuita de TDS que se supone que debo usar 7.2, pero no parece funcionar.
http://www.freetds.org/userguide/choosingtdsprotocol.htm
EDITAR 2:
También lo he probado con sqsh
sqsh -D <dbname> -S <ipaddy> -U <user> -P <password>
sqsh-2.5 Copyright (C) 1995-2001 Scott C. Gray
Portions Copyright (C) 2004-2014 Michael Peppler and Martin Wesdorp
This is free software with ABSOLUTELY NO WARRANTY
For more information type '\warranty'
Open Client Message
Layer 0, Origin 0, Severity 78, Number 35
Adaptive Server connection timed out
Respuesta1
El problema era un problema de firewall.
Por lo que puedo decir, cuando hice esto
telnet <ip> 1433
Trying <ip>...
Connected to <ip>.
En realidad, no estaba conectado al servidor. Si le doy un minuto se desconecta. Instalé Wireshark en la máquina y noté que no se envió respuesta desde el servidor a la solicitud de telnet.
Otra prueba de que se trataba de un problema de firewall fue que podía conectarme a la base de datos desde otra máquina, pero no desde el servidor. Entonces hice un túnel ssh para mostrar que no era la forma en que estaba configurada la aplicación, sino la red.
ssh -L 1433:theServerGivingMeIssues:1433 SQLserver
Podría conectarme al servidor SQL sin el túnel, pero no con el túnel.