Can you run dig in a container on localhost (dig +search localhost, I think) and contrast that? Is it only one tool that fails to read /etc/hosts, or all tools?
On Thu, Aug 11, 2016 at 2:00 PM, Ulf Lilleengen <[email protected]> wrote: > My bad. This was inside the same container, but it was one I ran manually > with --net=host. > > Here is from the one running in openshift: > sh-4.3$ cat /etc/resolv.conf > search enmasse.svc.cluster.local svc.cluster.local cluster.local > nameserver 192.168.1.17 > options ndots:5 > > On 08/11/2016 07:44 PM, Clayton Coleman wrote: > >> Sorry, I meant resolve.conf inside of one of your containers >> >> On Thu, Aug 11, 2016 at 1:35 PM, Ulf Lilleengen <[email protected] >> <mailto:[email protected]>> wrote: >> >> [root@strappi /]# cat /etc/resolv.conf >> # Generated by NetworkManager >> search redhat.com <http://redhat.com> >> >> nameserver 10.38.5.26 >> nameserver 10.35.255.14 >> nameserver 192.168.1.1 >> # NOTE: the libc resolver may not support more than 3 nameservers. >> # The nameservers listed below may not be recognized. >> nameserver 2001:4662:afe3:0:8a1f:a1ff:fe2d:34e6 >> >> Note that I set the disable_ipv6=1, but I didn't restart >> openshift/docker after doing it though. >> >> On 08/11/2016 05:48 PM, Clayton Coleman wrote: >> >> Tried this with Fedora 24 and very similar config (but centos7 >> image) >> and I'm able to ping localhost. >> >> $ cat /etc/hosts >> # Kubernetes-managed hosts file. >> 127.0.0.1localhost >> ::1localhost ip6-localhost ip6-loopback >> fe00::0ip6-localnet >> fe00::0ip6-mcastprefix >> fe00::1ip6-allnodes >> fe00::2ip6-allrouters >> 172.17.0.2centoscentos7-debug >> >> I have net.ipv6.conf.all.disable_ipv6 = 1 set - should be >> possible. >> >> Can you provide your /etc/resolv.conf from inside that image? >> >> On Thu, Aug 11, 2016 at 11:29 AM, Ulf Lilleengen >> <[email protected] <mailto:[email protected]> >> <mailto:[email protected] <mailto:[email protected]>>> wrote: >> >> Host: >> OS: Fedora 24 >> Docker: 1.10.3 >> glibc-2.23.1-8 >> >> Docker image: >> Name: gordons/qdrouterd:v10 (based on Fedora 23) >> Glibc:glibc-2.22-11 >> >> Nothing special in the images other than that. The issue >> appeared >> without any significant change other than running the latest >> openshift/origin image. >> >> On 08/11/2016 04:58 PM, Clayton Coleman wrote: >> >> That is very strange. Anything special about the >> container >> (what OS, >> libraries, glibc version, musl)? What version of Docker >> was >> running? >> >> On Wed, Aug 10, 2016 at 3:45 AM, Ulf Lilleengen >> <[email protected] <mailto:[email protected]> >> <mailto:[email protected] <mailto:[email protected]>> >> <mailto:[email protected] <mailto:[email protected]> >> <mailto:[email protected] <mailto:[email protected]>>>> wrote: >> >> Hi, >> >> We were debugging an issue yesterday where >> 'localhost' could >> not be >> resolved inside a container in openshift origin >> v1.3.0-alpha.3. I'm >> not sure if this is openshift or kubernetes-related, >> but >> thought I'd >> ask here first. >> >> We have two containers running on a pod, and one >> container is >> connecting to the other using 'localhost'. This has >> worked >> fine for >> several months, but stopped working yesterday. We >> resolved >> the issue >> by using 127.0.0.1. We were also able to use the pod >> hostname as well. >> >> I'm thinking this might be related to IPv6, given that >> /etc/hosts >> seemed to contain IPv6 records for localhost, and >> the other >> container may be listening on IPv4 only. I tried >> disabling >> it with >> sysctl net.ipv6.conf.all.disable_ipv6=1 to verify, >> but I >> still saw >> the same issue. >> >> sh-4.3$ cat /etc/hosts >> # Kubernetes-managed hosts file. >> 127.0.0.1 localhost >> ::1 localhost ip6-localhost ip6-loopback >> fe00::0 ip6-localnet >> fe00::0 ip6-mcastprefix >> fe00::1 ip6-allnodes >> fe00::2 ip6-allrouters >> 172.17.0.6 controller-queue1-tnvav >> >> -- >> Ulf Lilleengen >> >> _______________________________________________ >> users mailing list >> [email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> <mailto:[email protected]>> >> <mailto:[email protected] >> <mailto:[email protected]> >> <mailto:[email protected] >> <mailto:[email protected]>>> >> >> http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users> >> >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users>> >> >> >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users> >> >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> <http://lists.openshift.redhat.com/openshiftmm/listinfo/users>>> >> >> >> >> -- >> Ulf >> >> >> >> -- >> Ulf >> >> >> > -- > Ulf >
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