Can't install OVM over clean debian-stretch

Hi,
I'm still struggiling in setting up my machine so that it has OVM, runs kodi and logs to openvpn automatically.
Due to hardware issues, my PC is a G4560 kabylake CPU with integrated graphics I can't rely on a stable debian distro and it's drivers.

Today I've tried installing a fresh debian with gnome desktop base on stretch (/testing) netinstall iso.

After logging in to gnome, following these steps:

Shell-Script


    echo "deb http://packages.openmediavault.org/public erasmus main" > /etc/apt/sources.list.d/openmediavault.list
    apt-get update
    apt-get install openmediavault-keyring postfix
    apt-get update
    apt-get install openmediavault
    omv-initsystem

I get an error while running apt-get install openmediavault

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
 openmediavault : Depends: php5-fpm but it is not installable
                  Depends: php5-cgi but it is not installable
                  Depends: php5-cli (>= 5.6) but it is not installable
                  Depends: php5-pam but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Anyone could help me out? I'm still a linux newbie and I'm not really sure if its OK, to install those packages from a backport repo or what other steps I could do to make OMV run.

For example stretch repository has a php-cli package in version 7.0. Will OMV understand that as it;s named simply php-cli and not php5-cli.

Otherwise all other parts worked as they should (kodi, openvpn, tixati) before I wiped the HDD and tried one more install from scratch.

I'd appreciate any help!
Regards

Thanks.

I have added stable and backports repo and set them as default.
After apt update omv found dependencies and it's installing itself.

Also, as i'm not sure about it - when you say:

Zitat von ryecoaaron

OMV 3.x ONLY works on Debian Jessie
OMV 2.x and 3.x only work with php5.

Does it mean that Debian Jessie with backports / testing repo won't work by definition?

Edit:
Install complete,
omv-initsystem gives:

omv-initsystem
W: mdadm: /etc/mdadm/mdadm.conf defines no arrays.
2017/03/13 18:35:56 socat[10163] E connect(5, AF=1 "/var/run/rrdcached.sock", 25): No such file or directory
run-parts: /usr/share/openmediavault/initsystem/99rrd exited with return code 1

Thanks for the link!

I'm concluding OMV is not prepared for Debian Stretch (9).

As I side note installation completed, and i'm able to log to omv webgui anyway. The only thing missing are graphs (none is generated)