from:"Xavier Carcelle"

Re: [Server-devel] Finetuning XO backups to XS

2013-01-31 Thread Xavier Carcelle

Hey Adam, hey XS folks,
Thanks for your reminder regarding the upcoming Toronto sprint for the
XS developers/users and I wish I could come to the event.
However, I have started looking at a way to run ds-backup.py without
sleeping a random before the rsync and I have some questions about the
script. Do you guys where is the identity file for the olpc user in
the /home/olpc directory.
Do you have to access moodle once registered to be able to run rsync
over ssh without password ?
Thanks for your help.
Xavier.

On Wed, Jan 30, 2013 at 10:42 AM, Holt h...@laptop.org wrote:
 Are folks available to discuss backup/restore, WebDAV, squid, Puppet/pdsh,
 pathagar, dansguardian, Moodle during our presprint voice call expected
 Sunday or Monday 6PM NYC time? (much progress has in fact been made among
 attendees to the imminent Feb 6-11 http://schoolserver.org Toronto-area
 sprint, but a wider discussion on future requirements-vs-dreams would be
 really great..)


 On 1/30/2013 4:33 AM, Xavier Carcelle wrote:

 Hi there,

 We are currently looking at OLPC France on a way to tweek and
 finetuning the backups of XOs on XS namely :

 -being to do the backup of XO at anytime from an interaction with the XO
 =using the rsync command from ds-backup.py with a XO already
 registered to the XS (ssh keys exchange validated)

 =being able to do this backup through a simple sugar actitvity (like
 a finish my class that does backup at using) that calls the rsync ?

 -being able to do backups of XOs from the XS
 =sshd is not installed/initiated on the XO so remote rsync is not
 possible, can we imagine a script from the XS after the first backup
 that allows xs-xo commands and backups ?

 Thanks for your support.

 Xavier/
 ___
 Server-devel mailing list
 Server-devel@lists.laptop.org
 http://lists.laptop.org/listinfo/server-devel


 --
 Help kids everywhere map their world, at http://olpcMAP.net !

 ___
 Server-devel mailing list
 Server-devel@lists.laptop.org
 http://lists.laptop.org/listinfo/server-devel
___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

[Server-devel] Finetuning XO backups to XS

2013-01-30 Thread Xavier Carcelle

Hi there,

We are currently looking at OLPC France on a way to tweek and
finetuning the backups of XOs on XS namely :

-being to do the backup of XO at anytime from an interaction with the XO
=using the rsync command from ds-backup.py with a XO already
registered to the XS (ssh keys exchange validated)

=being able to do this backup through a simple sugar actitvity (like
a finish my class that does backup at using) that calls the rsync ?

-being able to do backups of XOs from the XS
=sshd is not installed/initiated on the XO so remote rsync is not
possible, can we imagine a script from the XS after the first backup
that allows xs-xo commands and backups ?

Thanks for your support.

Xavier/
___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

Re: [Server-devel] DNS/DHCP configuration questions/issues

2012-05-23 Thread Xavier Carcelle

Dear Ruben, folks,

 DHCPDARGS=wlan0

 ^ I think this is both incorrect and unnecessary.

 For correctness it should be DHCPDARGS=wlan0;

 But as long as wlan0 is assigned to the 172.18.96.0 network then you do not 
 need to limit the configuration to an interface.

the dhcpd configs works for IP assignment
wlan0 (802.11 wifi dongle on the server) is on the  172.18.96.0/19 subnet
xos gets an ip but nothing in the /etc/resolv.conf on the xo side
neither domain that allows to register (xmlrpc client to
http://localhost:8080) nor to moodle (http://localhost) but using
directly the IP of the schoolserver works.

It's only a DNS issue now between dhcpd/named and the xos.

My best regards,

Xavier Carcelle.

 What are you using for a configuration:

 -WAN - eth0 - XS - eth1 - switch - AP - XO?
 -WAN - etho - XS - wlan1(1)- XO? In which case, what are you using to share 
 the wlan connection?

 When the XO does connect, what does it receive for an IP address?





 subnet 172.18.96.0 netmask 255.255.224.0 {
        option routers                  172.18.96.1;
        option subnet-mask              255.255.224.0;
        option broadcast-address        172.18.127.255;
        # this is the whole range we have available - 8K addresses
        # range                           172.18.96.2 172.18.127.254;
        # instead, we'll save 510 addresses for later.
        range                           172.18.96.2 172.18.125.254;
        # the other /24s:
        # - 172.18.126.0/24 for static IP addresses
        #    for printers, AP management consoles, etc.
        # - 172.18.127.0/24 for temporary addresses for
        #    XO activation

        # As this subnet is wired or wifi a/b/g, these lease
        #    times are on the long side
        default-lease-time      10800;
        max-lease-time          21600;
 }
 /FILE

 Our best regards,

 Xavier Carcelle.
 ___
 Server-devel mailing list
 Server-devel@lists.laptop.org
 http://lists.laptop.org/listinfo/server-devel

___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

[Server-devel] DNS/DHCP configuration questions/issues

2012-05-22 Thread Xavier Carcelle

Dear XS fellows,

We are currently configuring the XS server for the deployment in
Madagascar and have some issues on the DNS/DHCP.
Could you resume the main part of the DNS/DHCP config on the XS (using
2 interfaces : eth0 for WAN uplink, wlan0 for LAN wifi delivering IPs,
DNS to XOs)
=We dont seem to have the domain and nameserver propagated to the
/etc/resolv.conf of the XOs
=Our /etc/dhcp-xs.conf is :

FILE
#
# School server 1 DHCP Server Configuration file.
#
ddns-update-style interim;
#ignore client-updates;

option domain-name nosykomba.org;
option domain-name-servers  172.18.96.1;
option ntp-servers  172.18.96.1;
DHCPDARGS=wlan0

subnet 172.18.96.0 netmask 255.255.224.0 {
option routers  172.18.96.1;
option subnet-mask  255.255.224.0;
option broadcast-address172.18.127.255;
# this is the whole range we have available - 8K addresses
# range   172.18.96.2 172.18.127.254;
# instead, we'll save 510 addresses for later.
range   172.18.96.2 172.18.125.254;
# the other /24s:
# - 172.18.126.0/24 for static IP addresses
#for printers, AP management consoles, etc.
# - 172.18.127.0/24 for temporary addresses for
#XO activation

# As this subnet is wired or wifi a/b/g, these lease
#times are on the long side
default-lease-time  10800;
max-lease-time  21600;
}
/FILE

Our best regards,

Xavier Carcelle.
___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

[Server-devel] smooth shutdown for 12V-DC powered XS

2012-05-08 Thread Xavier Carcelle

Dear XS developers,

As we plan to install and deploy a fitPC2 as a School Server in our
NosyKomba deployment in Madgascar for OLPC France, we plan to powered
it with the 12 VDC power-rail (powered by solar panel + battery +
regulator).
=As we did it with another XS installed but powered by 220VAC + APC
where we were able to use a smart APC to send messages to the kernel
based on battery level threshold on the APC connected by Ethernet
cable to the XS. This was actually working great smoothly hatling the
fedora kernel on the XS
=Now I would like to do it with the 12VDC power-rail by having such a
power buffer of a 10-20s where i can send a message to the kernel to
halt before complete power outage.
Do you know any
-hardware tools/equipements built-in (like battery + voltage/current
metering + I/O serial messages sent to a kernel) ?
-arduino-based or like ready to do such an operation
-other tricks/hints to handle smooth halting ?

My best and eager to deploy yet another XS server :)

Xavier.
___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

[Server-devel] XS/Book-server hardware reflexions

2012-04-26 Thread Xavier Carcelle

Dear XS folks,

to follow-up on the hardware threads, I have tried to sum-up some
reflexions about the hardware possible to build up the XS/book-server
@ our deployment in NosyKomba (Madagascar)

=Energy
The electricity is produced w/ solar panel (2 x 230W) producing a 24V-DC network
= we need to supply the maximum of devices/appliances in 12V/24V-DC
to maximize the usage of the electricity
=A 12v-DC network is preferred because most computers/network devices
power-supply are in the range 9-17V-DC (ATX power supply are producing
12V/5V/3V3/-12V from 110/220V-AC or 12v-DC)
=APC solutions with monitoring of the battery load interacting with
the XS over Ethernet link could help to shutdown/halt properly the
linux kernel in case of power outages
==I am looking at how can i stop smoothly the services while powered
by 12V-DC and some batteries/regulators ?

=School server (separated or merged XS and Book-server)

There is several propositions of hardware :

=reliable (PC-like solutions)
*Advantech ARK-3440 (w/ tropicalized hard drives in RAID6) supplied in
24V-DC (usually 180W - ATX) (~= 1000€)
*MSI WindBox DE500-5123 (newegg.com) - 169€
*MSI 6676-001BUS (amazon.com) + 4gb DDR2-800 200pin notebook form
(CORSAIR 4GB (2 x 2GB) 200-Pin DDR2 800 at $45 and 2TB SATA hard drive
(Samsung) at $80
*fitPC2 : http://www.fit-pc.com/web/fit-pc/fit-pc2-specifications/ + ssd hdd
*fitPC3

=low energy :
*Sheeva or dream plug supplied in 12/24V-DC (ARM-based CPU)
*flash/hard drives storage (ARM architecture) and connected in
Ethernet/Wi-Fi (usually 10W)

=experimental : RasperriPi (less than 5W)

=ARM based :
*XO 1.75 (? W) as a XS server with a usb-to-ethernet adapter for wired
connexion to the lan
*OpenWRT devices w/ external storage (foneras, wrt54g, ...)
___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

Re: Basic Electricity Text in French?

2011-10-29 Thread Xavier Carcelle

Bonjour George,

I can recommand different textbooks in french for electricity and eyrolles is a
major french publisher technical books :
they have a famous book about basic electricity :
http://www.eyrolles.com/BTP/Livre/electricite-mode-d-emploi-9782501072601
a list of different books related to electricity :
http://www.eyrolles.com/Accueil/Recherche/?q=%E9lectricit%E9xd=ntq3nol9d7gftf21dvtvmuv1p2
for solar panel installation in remote areas :
http://www.eyrolles.com/Sciences/Livre/photovoltaique-alimentation-electrique-autonome-de-sites-isoles-9782866611811
installation electriqueÃ:
http://www.eyrolles.com/Accueil/Recherche/?q=installation+electrique
another basic installation of electrical networks:
http://www.eyrolles.com/BTP/Livre/les-installations-electriques-9782862275888

Tell me if that fits your/their needs and we can exchange w/ them if they want a
specific topic book.

cheers,

Xavier Carcelle.


On Fri, Oct 28, 2011 at 06:09:25PM -0400, George Hunt wrote:
 Hi everyone,
 
 While working with Adam Holt in Haiti, I met a few go-getter teens who
 already are doing basic house wiring. They could help diagnose battery and
 solar array problems if they had a little more background.
 
 I learned basic electricity reading and re-reading the first few chapters of
 the Amateur Radio Relay League Handbook. I could use some help finding
 something similar for french speakers.
 
 Creole is the spoken language, but the instructional language is French and
 the students are easy with learning out of a book in french.
 
 Unfortunately I don't know enough French to find equivalent sources on line,
 or available for purchase on the web.
 
 I did find open source basic electricity texts in english (though perhaps
 too verbose) as examples of what I think is needed:
 
- http://openbookproject.net/electricCircuits/index.htm
- http://www.nmsea.org/Curriculum/4_6/Electricity/dc_electricity.htm
- http://educypedia.karadimov.info/library/How_Electricity_Works.swf
 
 Thanks for help,
 
 George

 ___
 Devel mailing list
 Devel@lists.laptop.org
 http://lists.laptop.org/listinfo/devel

___
Devel mailing list
Devel@lists.laptop.org
http://lists.laptop.org/listinfo/devel

Re: [Server-devel] Dansguardian on XS

2011-04-05 Thread Xavier Carcelle

Hola a todos,

Sabes si algunas han installado el Dansguardian on un XO directamente
para fitrar XO si no hay XS ?

Muchos saludos a todos.

Xavier.

2011/4/4 Reuben K. Caron reu...@laptop.org:
German,
You are at a point where you must define your own public DNS server. Hosted
at your own public IP address. On the following site we show the technique.
The configuration is not exactly the same but similar:
http://wiki.laptop.org/go/OS_Builder/Adding_OpenDNS_Configuration#Configure_your_public_DNS_server
Basically, DNS queries would be: XO-XS-PUBLIC FOUNDATION DNS
SERVER-OpenDNS
As your deployment grows this will also allow you to more easily scale your
XS installations as they can be preconfigured to point to your managed DNS
server, instead of trying to find the public IP address at each site.
I hope this helps.
Regards,
Reuben
On Apr 4, 2011, at 9:43 AM, German Ruiz wrote:

En 3 escuelas acá e Nicaragua tienen conexión a internet por un modem
3G (Huawei 3G E968 Wireless Gateway), cuando me conecto a internet, y quiero
registrar la IP pública en openDNS, siempre me sale que la IP es
190.212.80.224 ó 190.212.80.225, de igual manera cuando me conecto desde mi
laptop con un modem ZTE MF626 siempre me asigna una de estas 2 IP al momento
de navegar, supongo que esto es por el proveedor de Internet que es Claro
que está utilizando una proxy para estas conexiónes.
Para probar registre estas IP en openDNS y apliqué los forwarders
{208.67.222.222; 208.67.220.220;}; en el archivo /etc/named-xs.conf.in,
esperé unos 10 minutos y probé si estaba filtrando en contenido en la
escuela, lo cual no hacía, 5 minutos después, recibí email de usuarios que
aparentemente estaban siendo afectadas por el filtro, (facebook, youtube,
etc...). Por lo que descarte la opción de openDNS para estas escuelas, e
instalé squidguard a como hacen en Paraguay.
Que está impidiendo que openDNS funcione en estas conexiones???

Saludos

El 4 de abril de 2011 04:57, Martin Langhoff martin.langh...@gmail.com
escribió:

Hola Germán,

cuentanos como es la instalacion del modem 3G -- porqué no funciona el
uso de OpenDNS?

un abrazo,

martin

2011/4/1 German Ruiz germa...@opensuse.org.ni:
Muchas Gracias Rodolfo
Lo he instalado en un XS acá en Nicaragua, por lo general nosotros
usamos
openDNS, pero en esta escuela se me hizo imposible, ya que ellos cuentan
con
un modem 3G.
Al parecer el filtro está funcionando...
Gracias

2011/4/1 Rodolfo D. Arce S. rodolfo.arc...@gmail.com

We used squidguard in the Paraguay deployment

http://wiki.paraguayeduca.org/index.php/Squidguard

Is in spanish, but the commands are selfexplanatory. Perhaps it can
help, i'll try and translate to english soon

Cheers.. R

2011/3/31, German Ruiz germa...@opensuse.org.ni:
Hi

Is there any documentation to install Dansguardian on XS 0.6???

Any wiki or something???

Thanks...

--
German R S

--
*Rodolfo D. Arce S.*
web: rodolfoarce.com
twitter: @rodolfoarces http://twitter.com/rodolfoarces

--
German R S

___
Devel mailing list
Devel@lists.laptop.org
http://lists.laptop.org/listinfo/devel

--
martin.langh...@gmail.com
mar...@laptop.org -- Software Architect - OLPC
- ask interesting questions
- don't get distracted with shiny stuff - working code first
- http://wiki.laptop.org/go/User:Martinlanghoff

--
German R S

___
Server-devel mailing list
server-de...@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

___
Devel mailing list
Devel@lists.laptop.org
http://lists.laptop.org/listinfo/devel

Re: [Server-devel] Dansguardian on XS

2011-04-05 Thread Xavier Carcelle

Hola a todos,

Sabes si algunas han installado el Dansguardian on un XO directamente
para fitrar XO si no hay XS ?

Muchos saludos a todos.

Xavier.

2011/4/4 Reuben K. Caron reu...@laptop.org:
 German,
 You are at a point where you must define your own public DNS server. Hosted
 at your own public IP address. On the following site we show the technique.
 The configuration is not exactly the same but similar:
 http://wiki.laptop.org/go/OS_Builder/Adding_OpenDNS_Configuration#Configure_your_public_DNS_server
 Basically, DNS queries would be: XO-XS-PUBLIC FOUNDATION DNS
 SERVER-OpenDNS
 As your deployment grows this will also allow you to more easily scale your
 XS installations as they can be preconfigured to point to your managed DNS
 server, instead of trying to find the public IP address at each site.
 I hope this helps.
 Regards,
 Reuben
 On Apr 4, 2011, at 9:43 AM, German Ruiz wrote:

 En 3 escuelas acá e Nicaragua tienen conexión a internet por un modem
 3G (Huawei 3G E968 Wireless Gateway), cuando me conecto a internet, y quiero
 registrar la IP pública en openDNS, siempre me sale que la IP es
 190.212.80.224 ó 190.212.80.225, de igual manera cuando me conecto desde mi
 laptop con un modem ZTE MF626 siempre me asigna una de estas 2 IP al momento
 de navegar, supongo que esto es por el proveedor de Internet que es Claro
 que está utilizando una proxy para estas conexiónes.
 Para probar registre estas IP en openDNS y apliqué los forwarders
 {208.67.222.222; 208.67.220.220;}; en el archivo /etc/named-xs.conf.in,
 esperé unos 10 minutos y probé si estaba filtrando en contenido en la
 escuela, lo cual no hacía, 5 minutos después, recibí email de usuarios que
 aparentemente estaban siendo afectadas por el filtro, (facebook, youtube,
 etc...). Por lo que descarte la opción de openDNS para estas escuelas, e
 instalé squidguard a como hacen en Paraguay.
 Que está impidiendo que openDNS funcione en estas conexiones???

 Saludos

 El 4 de abril de 2011 04:57, Martin Langhoff martin.langh...@gmail.com
 escribió:

 Hola Germán,

 cuentanos como es la instalacion del modem 3G -- porqué no funciona el
 uso de OpenDNS?

 un abrazo,


 martin

 2011/4/1 German Ruiz germa...@opensuse.org.ni:
  Muchas Gracias Rodolfo
  Lo he instalado en un XS acá en Nicaragua, por lo general nosotros
  usamos
  openDNS, pero en esta escuela se me hizo imposible, ya que ellos cuentan
  con
  un modem 3G.
  Al parecer el filtro está funcionando...
  Gracias
 
  2011/4/1 Rodolfo D. Arce S. rodolfo.arc...@gmail.com
 
  We used squidguard in the Paraguay deployment
 
  http://wiki.paraguayeduca.org/index.php/Squidguard
 
  Is in spanish, but the commands are selfexplanatory. Perhaps it can
  help, i'll try and translate to english soon
 
  Cheers.. R
 
  2011/3/31, German Ruiz germa...@opensuse.org.ni:
   Hi
  
   Is there any documentation to install Dansguardian on XS 0.6???
  
   Any wiki or something???
  
   Thanks...
  
   --
   German R S
  
 
 
  --
  *Rodolfo D. Arce S.*
  web: rodolfoarce.com
  twitter: @rodolfoarces http://twitter.com/rodolfoarces
 
 
 
  --
  German R S
 
 
 
  ___
  Devel mailing list
  de...@lists.laptop.org
  http://lists.laptop.org/listinfo/devel
 
 



 --
  martin.langh...@gmail.com
  mar...@laptop.org -- Software Architect - OLPC
  - ask interesting questions
  - don't get distracted with shiny stuff  - working code first
  - http://wiki.laptop.org/go/User:Martinlanghoff



 --
 German R S


 ___
 Server-devel mailing list
 Server-devel@lists.laptop.org
 http://lists.laptop.org/listinfo/server-devel


 ___
 Server-devel mailing list
 Server-devel@lists.laptop.org
 http://lists.laptop.org/listinfo/server-devel


___
Server-devel mailing list
Server-devel@lists.laptop.org
http://lists.laptop.org/listinfo/server-devel

Re: [Server-devel] Finetuning XO backups to XS

[Server-devel] Finetuning XO backups to XS

Re: [Server-devel] DNS/DHCP configuration questions/issues

[Server-devel] DNS/DHCP configuration questions/issues

[Server-devel] smooth shutdown for 12V-DC powered XS

[Server-devel] XS/Book-server hardware reflexions

Re: Basic Electricity Text in French?

Re: [Server-devel] Dansguardian on XS

Re: [Server-devel] Dansguardian on XS

9 matches

Site Navigation

Mail list logo

Footer information