[Clfs-dev] Systemd 211 Notes

[William Harrington]

Greetings,

Plan to upgrade to Systemd 211.

Quick notes:

Remove libdbus before systemd, as it isn't needed anymore.

Apply this patch to install pkg-config files as we are not enabling  
compat lib support (used for systemd upgrades):

http://www.linuxfromscratch.org/~krejzi/systemd-compat.patch

Add these configure options to systemd since pkgconfig files aren't  
around from libdbus:

--with-dbuspolicydir=/etc/dbus-1/system.d \
--with-dbussessionservicedir=/usr/share/dbus-1/services \
--with-dbussystemservicedir=/usr/share/dbus-1/system-services \
--with-dbusinterfacedir=/usr/share/dbus-1/interfaces

install as normal (take note of new directories and files installed to  
add to book).


This release also includes systemd-networkd service.

http://www.freedesktop.org/software/systemd/man/systemd-networkd.service.html

https://coreos.com/blog/intro-to-systemd-networkd/


Network config can become simpler (although not for wireless and wpa)

Static config is rather simple and users should setup /etc/resolv.conf  
properly.

cat > /etc/systemd/network/10-static.network << "EOF"
[Match]
Name=ens33

[Network]
Address=192.168.0.15/24
Gateway=192.168.0.1
EOF


DHCP config doesn't need a dhcp client installed but needs a config  
(ens33 forf my example but can also use a wildcard for dhcp with all  
interfaces):

cat > /etc/systemd/network/10-dhcp.network << "EOF"
[Match]
Name=ens33

[Network]
DHCP=yes
EOF

For resolv.conf, systemd-networkd writes to /run/systemd/network/ 
resolv.conf  so need to run:

ln -sfv /run/systemd/network/resolv.conf /etc/resolv.conf


Users can still have the option of using a dhcp client and using the  
dhcpcd at .service unit. However, by default, systemd-networkd is enabled.
So if a user sets up a network config in /etc/systemd/network/, then  
network should be properly configured on next boot into the CLFS build.

We can totally rewrite the network section and include on one page for  
networkd configuration sections for setting up static, dhcp.
Can even have sections regarding Bridges, Bonds, and VLANs, but not  
required.

Sincerely,

William Harrington