Re: [gentoo-user] systemd how can I get a service to start after network is up

[Michael Hampicke]

Am 20.05.2014 12:29, schrieb covici@××××××××××.com:
> Hi.  I have a simple, static, ethernet network.  However when booting
> using systemd, a number of services which should start only after the
> network is up, insist on starting in parallell and so fail for various
> reasons.  Here is my network service and my ntpdate service file, and I
> would like to know how to get the ntpdate service file to wait till the
> network is up before trying to start.
>
> Thanks in advance for any suggestions.
>
> Network service file:
> [Unit]
> Description=Network Connectivity for %i
> Documentation= nam ip
> Before=network.target
> wants=network.target
> BindsTo=sys-subsystem-net-devices-%i.device
> After=sys-subsystem-net-devices-%i.device
> [Service]
> Type=oneshot
> RemainAfterExit=yes
> EnvironmentFile=/etc/conf.d/network@%i
> ExecStart=/bin/ip link set dev %i up
> ExecStart=/bin/ip addr add ${address}/${netmask} broadcast ${broadcast} dev %i
> ExecStart=-/bin/bash -c "test -n ${gateway} && /bin/ip route add default via ${gateway}"
> ExecStart=-/bin/bash -c "test -f /etc/conf.d/postup@%i.sh&&/bin/bash  -c /etc/conf.d/postup@%i.sh"
> ExecStop=/bin/ip addr flush dev %i
> ExecStop=/bin/ip link set dev %i down
> [Install]
> WantedBy=multi-user.target
>
> and here is my ntpdate service file:
>
> [Unit]
> Description=Set time via NTP using ntpdate
> After=network.target nss-lookup.target
> Before=time-sync.target
> Wants=time-sync.target
>
> [Service]
> Type=oneshot
> EnvironmentFile=/etc/conf.d/ntp-client
> ExecStart=/usr/sbin/ntpdate $NTPCLIENT_OPTS
> RemainAfterExit=yes
>
> [Install]
> WantedBy=multi-user.target
>

Hi there,

setting "After=network.target" should just work (tm). I have a few
custom service files which need a working network connection, and using
this setting words for me.

systemd-analyze plot > boot.svg also shows the these services only start
after the network is up.