#14: Investigate systemd-networkd
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Reporter: mattdm | Owner: janeznemanic
Type: task | Status: new
Priority: normal | Milestone: Fedora 21 (Alpha)
Component: Cloud Base Image | Resolution:
Keywords: |
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Comment (by gospo):
Replying to [comment:3 janeznemanic]:
> Report on my work.
[...]
>
> I did some research on scripts in /etc/sysconfig/network-scripts. All
those scripts depend on ifcfg-* files in the same directory. But systemd-
networkd doesn't use ifcfg-* files. I removed ifcfg-* files and systemd-
netword worked fine. I was also able to ping google. But if I tried to use
for example ifup or ifdown script then that script failed. Because it
couldn't source ifcfg-*. I think so, I might be wrong. Since ifup and
ifdown are links to /usr/sbin/{ifup,ifdown} it might be possible to remove
/usr/sbin/{ifup,ifdown}. But I haven't tested that so I'm not sure. I
think we also don't need to use /etc/rc.d/init.d/network. I removed that
file and networking worked fine with systemd-networkd.
>
> So to sum up. If systemd-networkd service is used it is possible in my
opinion to remove scripts in /etc/sysconfig/network-scripts and
/etc/rc.d/init.d/network script. Besides that it is possible to remove
NetworkManager.
>
I took a quick look at the files from initscripts that are likely
networking related. It seems possible to remote these from initscripts
core and (as Johannes suggested above) possibly break initscripts out into
a new package. If there was a desire to add the missing functionality to
networkd that is currently in initscripts then the new initscripts package
could be slowly whittled away to nothing when ppp and netconsole support
are added to networkd (that appears to be the only missing functionality).
/etc/NetworkManager
/etc/NetworkManager/dispatcher.d
/etc/NetworkManager/dispatcher.d/00-netreport
/etc/networks
/etc/ppp
/etc/ppp/ip-down
/etc/ppp/ip-down.ipv6to4
/etc/ppp/ip-up
/etc/ppp/ip-up.ipv6to4
/etc/ppp/ipv6-down
/etc/ppp/ipv6-up
/etc/ppp/peers
/etc/rc.d/init.d/netconsole
/etc/rc.d/init.d/network
/etc/sysconfig/netconsole
/etc/sysconfig/network-scripts
/etc/sysconfig/network-scripts/*
/usr/bin/ipcalc
/usr/lib/udev/rename_device
/usr/lib/udev/rules.d/60-net.rules
/usr/libexec/initscripts
/usr/libexec/initscripts/legacy-actions
/usr/sbin/ifdown
/usr/sbin/ifup
/usr/sbin/netreport
/usr/sbin/ppp-watch
/usr/sbin/usernetctl
/usr/share/doc/initscripts/changes.ipv6
/usr/share/doc/initscripts/ipv6-6to4.howto
/usr/share/doc/initscripts/ipv6-tunnel.howto
/usr/share/doc/initscripts/static-routes-ipv6
/usr/share/man/man1/genhostid.1.gz
/usr/share/man/man1/ipcalc.1.gz
/usr/share/man/man1/netreport.1.gz
/usr/share/man/man8/ifdown.8.gz
/usr/share/man/man8/ifup.8.gz
/usr/share/man/man8/ppp-watch.8.gz}}}
> '''Thoughts? Suggestions? Ideas?'''
>
> One more thing that's been bothering me for a few days now. How does
systemd name network interfaces when Fedora is run on top of different
hypervisors? If xen or kvm is used how does systemd name network
interfaces?
Systemd will name the device based on the bus/device/function of the
interfaces, so there could be some differences in the name chosen
depending on the hypervisor used (since each hypervisor may chose a
difference bus/dev/function for a given emulated interface.
--
Ticket URL: <https://fedorahosted.org/cloud/ticket/14#comment:5>
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