[Server-devel] Problemas con servidor xs

Reuben K. Caron reuben at laptop.org
Wed Mar 28 14:24:53 EDT 2012


Fernando,

So from a TCP/IP standpoint everything appears to be functioning correctly. If I am missing something that you believe is not functioning from the TCP/IP layers please point them out. 

You now have two issues:

-DHCP clients (XOs) are getting the wrong DNS configuration. To resolve this:
--On the 2wire, configure the DNS server to point to 192.168.1.253 (See attached, I believe it is the correct screenshot form your link. The picture shows a red box. The DNS configuration is two boxes above this)

-The DNS server on the XS 0.6 will not answer DNS queries to 192.168.1.253. To resolve this:
--Change the configurations files of named, httpd, and ejabberd to bind their services to 192.168.1.253, or
--Install and Use XS 0.7 -- which resolves this issue by binding services to all available addresses (recommended)

Please discuss with the team and let me know more questions.

Regards,

Reuben



On Mar 27, 2012, at 11:33 PM, Fernando Paz wrote:

> Hi Reuben.
> 
> 
> 
> On the XS I did this:
> 
>  
> 1. Copy eth0-local.example to network-scripts
> 
> -       cp /usr/share/doc/xs-config-0.6.0.16.g3c1e949/ifcfg-eth0-local.example /etc/sysconfig/network-scripts/ifcfg-eth0-local
> 
>  
> IPADDR = 192.168.1.253 à If I leave this line can I delete the one that is under or should I leave it
> 
> IPV6ADDR = 2001:4830:2446:ff00: :2/64
> 
> NETMASK = 255.255.255.0
> 
> #NETWORK = 18.85.46.0
> 
> #BROADCAST = 18.85.46.255
> 
> GATEWAY = 192.168.1.254
> 
>  
> 2. ifup eth0
> 
> 3. Setting the server domain name:
> 
> /etc/sysconfig/olpc-scripts/domain_config nombreescuela(schoolname)
> 
> 4. reboot
> 
>  
> DHCP activated in server:
> 
>  
> 
> Ping schoolserver =
> 
> PING schoolserver.nombreescuela (172.18.0.1) 56(84) bytes of data
> 
> 64 bytes from 172.18.0.1 ……
> 
> 64 bytes from 172.18.0.1 ……
> 
> 64 bytes from 172.18.0.1 ……
> 
> --- Schoolserver.nombreescuela ping stadistics –
> 
> 3 packets transmitted, 3 received, 0 % loss, time 2000ms
> 
>  
> 
> Ping 192.168.1.254 =
> 
> 
> 
> --- 192.168.1.254 ping stadistics –
> 
> 3 packets transmitted, 3 received, 0 % loss, time 2003ms
> 
>  
> Ping google.com =
> 
> 
> 
> --- --- google.com ping stadistics –
> 
> 3 packets transmitted, 3 received, 0 % loss, time 2029ms
> 
>  
> 
> On the XO:
> 
>  
> 
> Ping 192.168.1.254 =
> 
> --- --- 192.168.1.254 ping stadistics –
> 
> 3 packets transmitted, 3 received, 0% packet loss, time 2003ms
> 
>  
> 
> Ping 192.168.1.253 =
> 
> --- --- 192.168.1.253 ping stadistics –
> 
> 3 packets transmitted, 3 received, 0% packet loss, time 2002ms
> 
>  
> Ping google.com =
> 
> --- --- google.com ping stadistics –
> 
> 3 packets transmitted, 3 received, 0% packet loss, time 2003ms
> 
>  
> 
> IP ADDRESS OF XO = 192.168.1.24
> 
>  
> 
> On the XS:
> 
>  
> 
> Ping 192.168.1.24 =
> 
> --- --- 192.168.1.24 ping stadistics –
> 
> 3 packets transmitted, 3 received, 0% packet loss, time 2130ms
> 
>  
> Ping 192.168.1.25 =
> 
> --- --- 192.168.1.25 ping stadistics –
> 
> 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3001ms
> 
>  
> 
> 
> 
> 
> 
> DHCP deactivated in the server:
> 
> 
> 
> # chkconfig dhcpd off
> 
> # service dhcpd status
> 
> … dhcpd is stopped
> 
>  
> 
> Ping schoolserver =
> 
> 64 bytes from 172.18.0.1 ……
> 
> 64 bytes from 172.18.0.1 ……
> 
> 64 bytes from 172.18.0.1 ……
> 
> --- Schoolserver.nombreescuela ping stadistics –
> 
> 3 packets transmitted, 3 received, 0 % loss, time 2001ms
> 
>  
> 
> Ping 192.168.1.254 =
> 
> 
> 
> --- 192.168.1.254 ping stadistics –
> 
> 3 packets transmitted, 3 received, 0% packet loss, time 2003ms
> 
>  
> 
> Ping google.com =
> 
> 
> 
> --- --- google.com ping stadistics –
> 
> 3 packets transmitted, 3 received, 0 % packet loss, time 2031ms
> 
>  
> 
>  On the XO:
> 
>  
> Ping 192.168.1.254 =
> 
> --- --- 192.168.1.254 ping stadistics –
> 3 packets transmitted, 3 received, 0% packet loss, time 2002ms
>  
> Ping 192.168.1.253 =
> 
> --- --- 192.168.1.253 ping stadistics –
> 3 packets transmitted, 3 received, 0% packet loss, time 2003ms
>  
> Ping -c 3 google.com =
> 
> --- --- google.com ping stadistics –
> 3 packets transmitted, 3 received, 0% packet loss, time 2002ms
>  
>  
> IP ADDRESS OF XO = 192.168.1.24
>  
> On the XS:
>  
> Ping 192.168.1.24 =
> 
> --- --- 192.168.1.24 ping stadistics –
> 3 packets transmitted, 3 received, 0% packet loss, time 2003ms
>  
> Ping 192.168.1.25 =
> 
> From 192.168.1.253 ... Destination Host Unreachable
> From 192.168.1.253 ... Destination Host Unreachable
> From 192.168.1.253 ... Destination Host Unreachable
> 
> 
> --- --- 192.168.1.25 ping stadistics –
> 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3001ms
>  
> 
> Also in the link under there are some screenshots of 2wire 4011G router , but is in Spanish http://issuu.com/vigilat/docs/router_2wire_4011g 
> 
> 
> 
> 
> El 27 de marzo de 2012 07:15, Reuben K. Caron <reuben at laptop.org> escribió:
> Fernando, Carlos,
> 
> Hola Amigos.
> 
> First, we'll troubleshoot this and then I'll tell you why this setup is problematic.
> 
> 2wire: 192.168.1.254
> XS: 192.168.1.253
> XOs: 192.168.1.0 -- > .252
> 
> On the XS:
> 
> -Did you save the static ip changes to the file: /etc/sysconfig/network-scripts/ifcfg-eth0-local?
> -What is the output of the command ifconfig -- Does it show that the static IP address configured correctly?
> -What is the output of the command ping schoolserver
> -What is the output of the command ping 192.168.1.254
> -What is the output of the command dig google.com
> -What is the output of the command ping google.com
> 
> On the XO:
> -Connect to the Wireless.
> -What is the output of the command ping 192.168.1.254
> -What is the output of the command ping 192.168.1.253
> -What is the output of the command dig google.com
> -What is the output of the command ping google.com
> -What is the output of the command ifconfig -- Note the IP address of the XO
> 
> On the XS:
> -What is the output of the command ping IP_ADDRESS_OF_XO_ABOVE
> 
> Your current setup has limitations:
> 1.Only 252 clients will be able to connect
> 2.XO's cannot connect, ping, or resolve "schoolserver," DNS entry because they get IP configuration from DHCP of 2wire. 2Wire does not know how to resolve the hostname schoolserver. 
> 
> The #2 issue can be resolved by either:
> 
> -If possible you maybe able to assign the DNS server in 2Wire configuration to point to 192.168.1.253 for DNS resolution, *or*
> -Disable DHCP on 2Wire, Enable DHCP on XS, Add manual default routes from XS <-> 2Wire
> 
> Let us know the output of the commands and also some screenshots of the available configuration of the 2Wire configuration screens because I cannot find any manuals available online for this model.
> 
> Regards,
> 
> Reuben
> 
> 
> 
> On Mar 27, 2012, at 1:04 AM, Fernando Paz wrote:
> 
>> Hola John, gracias por responder.
>> 
>> 2 . Si 802.11. Logro hacer ping del servidor a otras computadoras y ping así mismo. No logro hacer ping al servidor desde otras computadoras no logran pasar por el router.
>> 
>> 3. Tengo entendido que si se puede lograr hacer de esta manera con un router, conectándose a la red del router y colocando en el navegador el dominio del servidor schoolserver.escuelax 
>> 
>> Por eso mi pregunta si alguien ya había utilizado este router 2wire 4011G... o en este caso si no se puede el porque... o si  hay una lista de router que no son compatibles con el servidor XS y si el 2wire pertenece a esta lista ..
>> 
>> 
>> 
>> 
>> 
>> El 26 de marzo de 2012 18:59, John Watlington <wad at laptop.org> escribió:
>> 
>> On Mar 26, 2012, at 8:05 PM, German Ruiz wrote:
>> 
>> > Hola Fernando
>> >
>> > Tengo unas dudas:
>> 
>> > 2. Cuando quieres registrar una XO, esta cómo se conecta al XS, si
>> > dices que este no tiene AP en tu escenario.
>> 
>> Tiene 802.11 el modem/router  ?   Si es verdad, cual es la dirección IP
>> de la computadora con que logras al servidor ?
>> Puedes "ping" al servidor ?
>> 
>> > 3. Cuando corres el comando: chkconfig dhcpd off
>> >
>> > Deshabilitas el servicio dhcp para las XO, que estas lo necesitan para
>> > conectarse al XS y registrarse.
>> 
>> Actualmente, todavia pueden registrarse en este caso, pero necesitan
>> que el nombre DNS "schoolserver" apunte al servidor.
>> 
>> > 4. Adicionalmente ya está disponible la versión 0.7[0] del XS que está
>> > basada en Centos 6 con el kernel de Fedora 15.
>> >
>> > [0] http://wiki.laptop.org/go/XS_Installing_Software_0.7
>> >
>> > Saludos
>> >
>> > --
>> > German R S
>> >
>> > 2012/3/26 Fernando Paz <fipazc at gmail.com>
>> >>
>> >> Hola lista.
>> >>
>> >> Tengo problemas con hacer funcionar el servidor XS.
>> >> El escenario actual es sin access points y es así:
>> >> INTERNET -> Modem/Router <--> Servidor XS
>> >>
>> >> Internet por medio de DSL
>> >> Modem/Router 2wire modelo: 4011G
>> >> Servidor XS versión: 0.6
>> >>
>> >> Configuración:
>> >> Modem/Router = DHCP activado, direcciónes = 192.168.1.1 - 192.168.1.252
>> >> Servidor = DHCP desactivado usando el comando chkconfig dhcpd off,
>> >> dirección estática = 192.168.1.253
>> >>
>> >> Configuracion de eth0 en servidor:
>> >> #### To set a static address, copy or rename this file to
>> >> ####   /etc/sysconfig/network-scripts/ifcfg-eth0-local
>> >> #### and set the values below appropriately
>> >> IPADDR=192.168.1.253
>> >> IPV6ADDR=2001:4830:2446:ff00::2/64
>> >> NETMASK=255.255.255.0
>> >> #NETWORK=18.85.46.0
>> >> #BROADCAST=18.85.46.255
>> >> GATEWAY=192.168.1.254
>> >>
>> >> No logro entrar al servidor desde otra computadora ni registrar XO.
>> >> Instale un escritorio grafico dentro del servidor para ver si en localhost y
>> >> si funciona. El problema son las configuracion en el modem / router 2wire
>> >> que no deja acceder al servidor desde otras maquinas...
>> >>
>> >>    Lic. Fernando Paz
>> >> Oficina de Innovación Gubernamental
>> >> Perif. Pte. 138 / Navarrete y Colosio
>> >> Tel. +52(662) 213-8119, 23, 25
>> >> fernando.paz at sonora.gob.mx
>> >> Hermosillo, Sonora. México
>> >> www.oig.sonora.gob.mx
>> >>
>> >>
>> >>
>> >>
>> >> Contact me: fernando.pazc
>> >> Latest tweet: Inauguración en Baviacora del decimo CCA en #sonora
>> >> @unnuevofuturo http://t.co/YIda66fs
>> >> Follow @fernandopaz1 Reply Retweet   17:35 Mar-24
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>> >>
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>> >>
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>> 
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> 
> 
> <LAN-DHCP.png><Firewall.png><firewall status.png><LAN 192.168.1.253 details - .png><LAN-ESTADO.png><Setting advanced firewall.png>

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