systemd-networkd to configure my network with and basically just have:
cat /etc/systemd/network/eth1-dhcp.network [Match] Name=eth1 [Network] DHCP=yes
But now ,I need to make some changes to my system (a raspberry pi like device) when the network goes down. I have tried a few things.
-1 I notice that I can watch the
/sys/class/net/eth1/carrier for but it only changes when the physical network connection changes.
-2 When I run
journalctl -fu systemd-networkd I can watch systemd-networkd react to network connectivity changes.
-3 I have tried adding scripts like the following:
cat /etc/network/if-down.d/downTrigger.sh #!/bin/sh /usr/bin/echo `/usr/bin/date` > /run/justDownTriggered ls -l /etc/network/if-down.d/downTrigger.sh -rwxr-xr-x 1 root root 65 Apr 2 22:03 /etc/network/if-down.d/downTrigger.sh
Said script runs manually just fine, but does not run when I disconnect the network. I tried a variant in
if-post-down.d as well. Are these triggers separate from systemd-networkd perhaps?
Bottom line, I want to hook up something so I can write a file in
run or send a signal or whatever when the eth1 network goes down per my current systemd-networkd configuration at the top. Is it possible? The command I actually want to run when this goes down is:
`systemctl restart my_other_service`
when the network goes down. If there was a way to just put that dependency in the
my_other_serivce.service file, I'd be all for that. The trigger is that it should restart (not stop) when the network goes down.
(I am running on Debian 10)