On Thu, 2015-12-17 at 17:25 -0800, logical american wrote:
> To all:
> 
> In regard to my questions on using nmcli under cron, some more 
> experimentation and logging has shown that storing the password
> globally 
> is not pertinent to my issue, something else is occurring which I do
> not 
> understand yet, perhaps a GNOME policy setting.

I'm not sure about this, but when you invoke nmcli via a cron job, the
process usually has no session. Invoking most D-Bus calls are guarded
by PolicyKit, which might (depending on your configuration) reject a
call if the user has no session.

Anyway, in that case you should also see a proper AccessDenied failure
reason.


> I have been carefully monitoring the D-Bus messages under normal CLI 
> terminal activation, and it seems that I am going to have to
> construct 
> some type of D-Bus script to send the correct activation message to
> the 
> ethernet port, while running under cron.

nmcli and other clients use only D-Bus. Obviously you can
replace/reimplement every client by using D-Bus directly.

See here for examples how to do that: http://cgit.freedesktop.org/Netwo
rkManager/NetworkManager/tree/examples/python/dbus

(but usually you don't need to do that... nmcli should suit your need!)


> I am using openSuse 13.2 and Network manager is 0.9.10.0-3.17.1 and
> the 
> native nm-connection-editor does NOT display any password icon or
> allow 
> the opportunity to specify the password globally, but I think this is
> a 
> diversion to the real issue here (but I could be wrong)

Yes. 0.9.10 connection-editor might look different. Look at the
connection:

  $ nmcli connection show $CONNECTION_ID

if the corresponding field SOME-PASSWORD-flags=0, then it means the
password is stored globally.
-- still, if there is no global password set or if authentication
fails, NM will again ask a secret agent to provided a correct (global)
password. So, at least initially you need a client capable of providing
the password.

The password should then also be stored in the corresponding file in
/etc/NetworkManager/system-connections/.




> The captured D-Bus message to activate the IPV4 port eth0 is 1061
> lines, 
> I am very reluctant to post that message to this group.
> 
> Can I use this message to construct my own D-Bus message to wake up
> and 
> activate the IPV4 port?

as said: yes. But you should not be required to do so.
Also, nmcli uses libnm as D-Bus wrapper. libnm loads all properties
first, so you see much more D-Bus messages that are strictly necessary
for your case. Look at the examples [1] and the D-Bus API
( https://developer.gnome.org/NetworkManager/0.9/ )

 
what is the output of the cron job? What does nmcli print and which
commands are you invoking?



Thomas

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