Docker Community Forums

Share and learn in the Docker community.

Traffic shaping on the Docker bridge network


(Philcontrolf1) #1

I’m aware this is a bit of a strange use case, but it does make sense for a project we’re undertaking!

I’m trying to control the total bandwidth which can be sent across the bridge network from docker containers to the host, but whenever I try this, I seem to lose all connectivity. Before I try anything I can happily ping the host from a standard Ubuntu container:

# ping -w 1 172.17.0.1
PING 172.17.0.1 (172.17.0.1) 56(84) bytes of data.
64 bytes from 172.17.0.1: icmp_seq=1 ttl=64 time=0.044 ms

--- 172.17.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.044/0.044/0.044/0.000 ms

On the host, I then set up my standard bandwidth limiting:

# sudo tc qdisc add dev docker0 root handle 1: htb default 1
# sudo tc class add dev docker0 parent 1: classid 1:1 htb rate 10mbps

But as soon as I’ve done this, I’ve absolutely no connectivity from the Ubuntu container to the host:

# ping -w 1 172.17.0.1
PING 172.17.0.1 (172.17.0.1) 56(84) bytes of data.

--- 172.17.0.1 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

Everything works fine again if I remove the qdisc from the interface.

Am I doing something stupid here, or is there something subtle I’m missing?


(Shdxiang) #2

Running into this problem too, Any updates?