[erlang-questions] Booting over the network
Mon Aug 6 14:42:17 CEST 2007
On Aug 6, 2007, at 5:51 AM, Joel Reymont wrote:
> How exactly do you boot a node over the network?
node 1) erl -sname boot
node 1) erl_boot_server:start(['127.0.0.1']).
node 2) erl -sname foo -hosts 127.0.0.1 -id foo -loader inet
> I know that you can do erl -loader inet ... but what happens then?
The config file (-config ...) as well as the boot file are loaded
using erl_prim_loader, i.e. fetched from the boot server using the
> Do any attempts to l(module). get redirected to the boot server?
> What about attempts to compile a module?
I'm not sure about this but the code server positively uses
> Can you fetch complete apps from the network boot server, e.g.
> Mnesia? How would you do this?
Using the boot script. The script can contain application upgrade
instructions and all the apps that need to be started up.
> The documentation for erl_prim_loader says: "The start script is
> also fetched with this low level loader." What is the start script
> that's being referred to here? Is this the boot file that you pass
> to erl -boot?
Yes, that boot script.
> How do you set up a network boot server? Is this just a regular
> Erlang node that does not require special configuration?
Correct. Just run erl_boot_server:start([...]).
Did I answer my own questions in-depth?
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