[OE-core] [PATCH] image.bbclass: Adding loop back for machine name in hosts file

[sujith h]

On Mon, Aug 4, 2014 at 9:05 PM, Enrico Scholz <
enrico.scholz at sigma-chemnitz.de> wrote:

> Sujith H <sujith.h-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> writes:
>
> > If hostname is not added to /etc/hosts file then rpcinfo command fails
> > when hostname is passed as argument.
> > ...
> > root at mx6q:~# rpcinfo -s mx6q
> > rpcinfo: can't contact rpcbind: RPC: (unknown error code)
>
> Is this really a common/valid use case?  'rpcinfo' is a debug tool and
> when you want information about the local host, you can execute
>
> # rpcinfo -s localhost
>
> IMHO, when using network related functionality, you have to setup
> networking.  This means:
>
> - setup the hostname; using ${MACHINE} is ambiguous with more than one
>   device and the string can contain chars forbidden by DNS ('_')
>
> - setup name resolving; this can be done by ordinary DNS, (unambiguous)
>   /etc/hosts, mDNS
>
>
> When DNS mapping of ${MACHINE} (or better `hostname`) without working
> DNS is really required, 'systemd' contains 'libnss_myhostname.so' (which
> is to be registered in /etc/nsswitch) which returns '127.0.0.2' as a
> fallback.
>
>
Is it ok to read from /etc/hostname and then have that in the /etc/hosts
file, rather than using ${MACHINE}?

>
> Enrico
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