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Re: Networking



The line you've highlighted about not being able to get networks stats from the container is harmless. The docker container has stopped but there is still a cgroup for it, and the system is attempting to gather stats. It's a bug that we're looking into but it's unrelated to any connectivity issues you might be having. 

What specific issues are you running in to?

Andy

On Thursday, July 21, 2016, Miloslav Vlach <miloslav vlach rohlik cz> wrote:
Hi,

can somebody please help me identify what is wrong ? It looks like the network connection is broken from the docker container…

Thanks Mila

Jul 21 14:57:21 rohlik-jdev01 systemd: Stopped docker container 8adf6ebdd893ea3c7b3ede0fbd2e80795380058a363b9509649ff684a28b3d37.

Jul 21 14:57:21 rohlik-jdev01 systemd: Stopping docker container 8adf6ebdd893ea3c7b3ede0fbd2e80795380058a363b9509649ff684a28b3d37.

Jul 21 14:57:21 rohlik-jdev01 origin-node: I0721 14:57:21.436046    3561 server.go:1100] GET /containerLogs/testo/wapi-12-build/sti-build?follow=true&limitBytes=10485760&tailLines=1000: (17.80430948s) 200 [[Go-http-client/1.1] 10.10.121.132:33154]

Jul 21 14:57:21 rohlik-jdev01 origin-node: I0721 14:57:21.745763    3561 helpers.go:101] Unable to get network stats from pid 6521: couldn't read network stats: failure opening /proc/6521/net/dev: open /proc/6521/net/dev: no such file or directory

Jul 21 14:57:22 rohlik-jdev01 origin-node: I0721 14:57:22.342345    3561 kubelet.go:2430] SyncLoop (PLEG): "wapi-12-build_testo(9dd31dfb-4f42-11e6-bf98-52cb629706b3)", event: &pleg.PodLifecycleEvent{ID:"9dd31dfb-4f42-11e6-bf98-52cb629706b3", Type:"ContainerDied", Data:"8adf6ebdd893ea3c7b3ede0fbd2e80795380058a363b9509649ff684a28b3d37"}

Jul 21 14:57:22 rohlik-jdev01 ovs-vsctl: ovs|00001|vsctl|INFO|Called as ovs-vsctl --if-exists del-port veth740cf17

Jul 21 14:57:22 rohlik-jdev01 kernel: device veth740cf17 left promiscuous mode

Jul 21 14:57:22 rohlik-jdev01 origin-node: I0721 14:57:22.638218    3561 manager.go:1368] Killing container "63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c testo/wapi-12-build" with 30 second grace period

Jul 21 14:57:22 rohlik-jdev01 journal: time="2016-07-21T14:57:22.639053363+02:00" level=info msg="{Action="" ID=63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c, LoginUID=4294967295, PID=3561}"

Jul 21 14:57:22 rohlik-jdev01 systemd: Stopped docker container 63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c.

Jul 21 14:57:22 rohlik-jdev01 systemd: Stopping docker container 63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c.

Jul 21 14:57:22 rohlik-jdev01 systemd-machined: Machine 63f3c7aded229b170b5ce620493cb254 terminated.

Jul 21 14:57:22 rohlik-jdev01 oci-register-machine[6669]: 2016/07/21 14:57:22 Register machine: poststop 63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c 0 /var/lib/docker/overlay/cbd4df1c6602213c15795ceb61291e908c2820779b5a5affc997787521c829f9/merged

Jul 21 14:57:22 rohlik-jdev01 oci-register-machine[6669]: 2016/07/21 14:57:22 TerminateMachine failed: No machine '63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c' known

Jul 21 14:57:22 rohlik-jdev01 NetworkManager[1021]: <info>  (veth740cf17): link disconnected

Jul 21 14:57:22 rohlik-jdev01 NetworkManager[1021]: <warn>  (veth649d055): failed to find device 19 'veth649d055' with udev

Jul 21 14:57:22 rohlik-jdev01 NetworkManager[1021]: <info>  (veth649d055): new Veth device (carrier: OFF, driver: 'veth', ifindex: 19)

Jul 21 14:57:22 rohlik-jdev01 avahi-daemon[1002]: Withdrawing workstation service for veth649d055.

Jul 21 14:57:22 rohlik-jdev01 avahi-daemon[1002]: Withdrawing workstation service for veth740cf17.

Jul 21 14:57:22 rohlik-jdev01 NetworkManager[1021]: <warn>  (veth649d055): failed to disable userspace IPv6LL address handling

Jul 21 14:57:22 rohlik-jdev01 NetworkManager[1021]: <warn>  (veth740cf17): failed to disable userspace IPv6LL address handling

Jul 21 14:57:22 rohlik-jdev01 origin-node: I0721 14:57:22.763175    3561 manager.go:1400] Container "63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c testo/wapi-12-build" exited after 124.889561ms

Jul 21 14:57:23 rohlik-jdev01 origin-node: I0721 14:57:23.081502    3561 kubelet.go:2245] Killing unwanted pod "wapi-12-build"

Jul 21 14:57:23 rohlik-jdev01 origin-node: E0721 14:57:23.327623    3561 manager.go:1297] Failed to teardown network for pod "9dd31dfb-4f42-11e6-bf98-52cb629706b3" using network plugins "redhat/openshift-ovs-subnet": exit status 1

Jul 21 14:57:23 rohlik-jdev01 origin-node: I0721 14:57:23.329214    3561 manager.go:1368] Killing container "63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c /" with 30 second grace period

Jul 21 14:57:23 rohlik-jdev01 journal: time="2016-07-21T14:57:23.329852522+02:00" level=info msg="{Action="" ID=63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c, LoginUID=4294967295, PID=3561}"

Jul 21 14:57:23 rohlik-jdev01 journal: time="2016-07-21T14:57:23.330123594+02:00" level=error msg="Handler for POST /containers/63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c/stop returned error: Container already stopped"

Jul 21 14:57:23 rohlik-jdev01 origin-node: E0721 14:57:23.330761    3561 kubelet.go:2248] Failed killing the pod "wapi-12-build": failed to "TeardownNetwork" for "wapi-12-build_testo" with TeardownNetworkError: "Failed to teardown network for pod \"9dd31dfb-4f42-11e6-bf98-52cb629706b3\" using network plugins \"redhat/openshift-ovs-subnet\": exit status 1"

Jul 21 14:57:23 rohlik-jdev01 origin-node: I0721 14:57:23.359886    3561 kubelet.go:2430] SyncLoop (PLEG): "wapi-12-build_testo(9dd31dfb-4f42-11e6-bf98-52cb629706b3)", event: &pleg.PodLifecycleEvent{ID:"9dd31dfb-4f42-11e6-bf98-52cb629706b3", Type:"ContainerDied", Data:"63f3c7aded229b170b5ce620493cb254c1bb745a450fea413373919ddc0b492c"}

Jul 21 14:57:27 rohlik-jdev01 origin-node: I0721 14:57:27.401554    3561 helpers.go:101] Unable to get network stats from pid 6415: couldn't read network stats: failure opening /proc/6415/net/dev: open /proc/6415/net/dev: no such file or directory



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