bboreham
commented
8 years ago I tried to replicate your problem, but it worked for me:
vagrant@host1:~$ weave reset
vagrant@host1:~$ weave launch 192.168.48.12root@host2:~# weave reset
root@host2:~# weave launch 192.168.48.11vagrant@host1:~$ docker run -it --name a1 --net=weave --hostname a1.weave.local $(weave dns-args) ubuntu:trusty
root@a1:/# ping a2
PING a2 (10.40.0.0) 56(84) bytes of data.
64 bytes from a2.weave.local (10.40.0.0): icmp_seq=1 ttl=64 time=0.397 ms
64 bytes from a2.weave.local (10.40.0.0): icmp_seq=2 ttl=64 time=0.374 ms
64 bytes from a2.weave.local (10.40.0.0): icmp_seq=3 ttl=64 time=0.378 ms
^C
--- a2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.374/0.383/0.397/0.010 ms
root@a1:/# ping a2.weave.local
PING a2.weave.local (10.40.0.0) 56(84) bytes of data.
64 bytes from a2.weave.local (10.40.0.0): icmp_seq=1 ttl=64 time=0.399 ms
64 bytes from a2.weave.local (10.40.0.0): icmp_seq=2 ttl=64 time=0.365 ms
^C
--- a2.weave.local ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.365/0.382/0.399/0.017 msroot@host2:~# docker run -it --name a2 --net=weave --hostname a2.weave.local $(weave dns-args) ubuntu:trusty
root@a2:/# ping a1
PING a1 (10.32.0.1) 56(84) bytes of data.
64 bytes from a1.weave.local (10.32.0.1): icmp_seq=1 ttl=64 time=1.37 ms
64 bytes from a1.weave.local (10.32.0.1): icmp_seq=2 ttl=64 time=0.365 msYour weave status dns output indicates all the addresses are known to WeaveDNS.
Could you do docker inspect -f '{{.HostConfig.DNS}}' a1 and confirm that the address there matches the current output of weave dns-args ?
The next step would be to turn on debug logging; address resolution should show up in docker logs weave as something like "lookup a2.weave.local."
To run with debug logging, shut everything down then:
weave launch --log-level=debug
weavebug3256
rade
lubars
I am using the Docker Network Plugin (--net=weave) to communicate between containers that reside on different hosts. Docker + Weave up & running on all hosts.
My test example is going to be very similar to the instructions in the documentation.
At this point
weave status dnsshows:But when I try to ping one of the containers (from the other container, of course) using their hostname, I get ping:
unknown host a1(or a2). Pinging using the IP address works.The most strange part is that if I use the Docker API Proxy, it all works as expected. However I don't want to go that route because I automatize all this process and I don't want to think about environment variables, whether I do it all with
sudoor in a root shell, whether I am in the same shell when Ieval $(weave env)and run my docker container, etc.Not to mention I didn't have this problem with version 1.4.6. Multiple reinstallations of weave and creating new containers didn't help.
Here is the log of weaveplugin:
Thank you.