Kategorie: Gentoo

My webserver was off the last days… I set up VHCS. If you host variois TLDs on one server, and if you want to give access to the config to different people it is just incredible what you can do with it. You can just regulate everything… subdomains, mailaccounts, mysql databases, ftp accounts, quotas, traffic… Give it a try, you will love it!

Only thing I didn’t manage yet is to set up custom procmail rules for virtual users. Dont’t know if it is even possible, but I hope so and if I find the solution I’ll inform you here at this place :-)

If you experience any problem with my webserver please let me know!

Who doesn’t know that problem. You are working on a bunch of different hosts via ssh, and on all of them you need specific SSH Options. On the first the port differs, on the second you need to login with a different user than you are connected right now, on the third you need X-Forwarding and on the fourth you want to redirect a remote port to a local one. I knew that it is possible to save host-specific options in a ssh config file, but I never got arround to take a look at it. Now I found exactly that question – and the answer – in the popular german computer magazine CT. The file is

~/.ssh/config

The structure is rather simple. You specify a connectionname via

Host CONNECTIONNAME

and the belonging host via

HostName HOSTNAME

After that you can specify any options you want to for the connection (see man ssh_config). You can do it for as many hosts as you want. I just set it up and it is just to cool how much time it saves not to type all the stuff all the time.

Example:

Host stiffmaster
HostName 192.168.6.112
User prego
Port 33
LocalForward 6312 localhost:631
ForwardX11 yes

Now you just type ssh stiffmaster instead of ssh -X -L 6312:localhost:631 -p 33 prego@192.168.6.112. Isn’t that cool?? :-)

Wenn:

alitoh jan # rfcomm connect 0
Can’t create RFCOMM TTY: Address already in use
alitoh jan #

Dann:

alitoh jan # rfcomm show
rfcomm0: 00:16:B8:C8:C2:4F channel 1 clean
alitoh jan # rfcomm release 00:16:B8:C8:C2:4F
alitoh jan # rfcomm show
alitoh jan # rfcomm connect 0
Connected /dev/rfcomm0 to 00:16:B8:C8:C2:4F on channel 1
Press CTRL-C for hangup

Und ich kann einfach nicht aufhoeren ohne einen Screenshot gepostet zu haben:

!!!BLUETOOTHROCKSDAHOUSE!!!

Ich habe eine Sphinx PICO PCMCIA Bluetooth Karte. PCMCIA Support im Kernel aktiviert, Bluetoothunterstuetzung einkomiliert, serial_cs als Modul. Problem:

Aug 12 12:42:20 alitoh pccard: PCMCIA card inserted into slot 0
Aug 12 12:42:20 alitoh cs: memory probe 0x0c0000-0x0fffff: excluding 0xc0000-0xcffff 0xe0000-0xfffff
Aug 12 12:42:20 alitoh cs: memory probe 0x60000000-0x60ffffff: clean.
Aug 12 12:42:20 alitoh cs: memory probe 0xa0000000-0xa0ffffff: clean.
Aug 12 12:42:20 alitoh pcmcia: registering new device pcmcia0.0
Aug 12 12:42:20 alitoh serial_cs: serial8250_register_port() at 0x03e8, irq 10 failed

Googeln und im Endeffekt die Hilfe von Russel King – Maintainer des serial core des 2.6er Kernels – brachte es dann zu:

Aug 12 12:51:55 alitoh pccard: PCMCIA card inserted into slot 0
Aug 12 12:51:55 alitoh cs: memory probe 0x0c0000-0x0fffff: excluding 0xc0000-0xcffff 0xe0000-0xfffff
Aug 12 12:51:55 alitoh cs: memory probe 0x60000000-0x60ffffff: clean.
Aug 12 12:51:55 alitoh cs: memory probe 0xa0000000-0xa0ffffff: clean.
Aug 12 12:51:55 alitoh pcmcia: registering new device pcmcia0.0
Aug 12 12:51:55 alitoh 0.0: ttyS5 at I/O 0x3e8 (irq = 10) is a 16550A

Problemloesung:

Keine freien uart-slots. Abhilfe dagegen schaffte mir den serial-support mit

(8) Maximum number of 8250/16550 serial ports

anstatt von

(4) Maximum number of 8250/16550 serial ports

zu kompilieren, und

8250.nr_uarts=8

als Kerneloption beim booten zu uebergeben.

Naechstes Problem:

alitoh linux # hciconfig dev
Can’t get device info: No such device
alitoh linux #

Loesung:

modprobe hci_uart
setserial /dev/ttyS5 baud_base 9121600
hciattach /dev/ttyS5 any 921600

anschliessend:

alitoh linux # hciconfig dev
hci0: Type: UART
BD Address: 00:80:37:14:CB:43 ACL MTU: 672:10 SCO MTU: 64:0
UP RUNNING PSCAN ISCAN
RX bytes:406 acl:0 sco:0 events:18 errors:0
TX bytes:340 acl:0 sco:0 commands:18 errors:0
alitoh linux #

Ma gucken ob wir Geraete finden:

alitoh linux # hcitool scan
Scanning …
00:16:B8:C8:C2:4F prego
alitoh linux #

Tataaaa… Handy gefunden :-) Mal anpingen…:

alitoh linux # l2ping 00:16:B8:C8:C2:4F
Ping: 00:16:B8:C8:C2:4F from 00:80:37:14:CB:43 (data size 44) …
44 bytes from 00:16:B8:C8:C2:4F id 0 time 38.70ms
44 bytes from 00:16:B8:C8:C2:4F id 1 time 78.48ms
44 bytes from 00:16:B8:C8:C2:4F id 2 time 76.81ms
44 bytes from 00:16:B8:C8:C2:4F id 3 time 76.83ms
4 sent, 4 received, 0% loss
alitoh linux #

Der Rest braucht nicht dokumentiert zu werden. emerge kdebluetooth blabla und alles wunnerbar :-D. Ich muss jetzt nur noch rausfinden, wie ich den ganzen Kram verautomatisiere, aber das kommt auch noch :-)