Re: [naviserver-devel] Runtime config load over HTTP

[Bernd E. <eid...@we...>]

Hi Vlad,

I like the idea but I would abstain from voting, because I think I personally 
would write a shellscript for it and make use of "wget" or "curl". Those 
tools offer tons of options, e.g.
- http, https, ftp (active/passive mode) support
- certificates, passwords; http digest authentication
- http proxy support
- tls, ssl
- different retry and timeout parameters
- server response can be logged etc.
So this would not have to be maintained in the core. You need some logic 
anyway that deals with failed connections, so this is - in my opinion - the 
part of the startup script.

BTW, such a script could be placed into the contrib section (Would be nice 
anyway to have examples for different distros, I will soon add one for SuSE)

No vote against it from me, but I would implement it with external tools.

> In case of multiple servers sometimes it it is easier to maintain and
> provision when config files are stored locally. I used to have server
> software that load config file on startup over HTTP and i would see that
> a usefull feature for naviserver as well. Image that you start it as
>
> nsd -t http://server:80/nsd.tcl
>
> and it will get the config file from the central server that will
> provide what is necessary, even on-the fly generating some config
> parameters. We have HTTP facility in the core, so it is easy to call it
> to retrieve the config and continue as usual.
>
> Of course there is a posibility that it will not be able to connect and
> thus will not be able to run but this can be handled by keeping last
> copy of config and load it in case of network issues.