No logging via daemon.json

General
1

I would like to send all container log to a syslog server but i fail.
added this line to /etc/docker/docker.json:

{
  "log-driver": "syslog",
  "log-opts": {
    "syslog-address": "udp://syslog:515",
    "tag": "{{.Name}}"
  }
}

also tried this:

dockerd --log-driver syslog --log-opt syslog-address=udp://syslog:515 --log-opt tag='docker/{{.Name}}'

both do NOT send any data to syslog server (port 515, udp). i tracked this with tcpdump.

im’ running docker inside an alpine linux lxc container on proxmox.

media:~# dockerd -v
Docker version 23.0.2, build 219f21bf07502b447095649b5a2764661737f164
2

Ok nevermind, the containers have to be recreated!

3

Yes, the daemon config only sets the default parameters so new containers can get that (just in case anyone wondering why recrateting was needed)