No, the problem isn't a conflict port because i've moved skydns to port 5353.
Now, I have seen a bit more the problem, from a pod I can't resolver any openshift service and if I try a ping to www.google.es for example take ~ 10 seconds. It's like dnsmasq is not forwarding to skydns? but my configuration is the same in both environments. Thanks, Fran. 2016-10-04 14:53 GMT+02:00 Scott Dodson <[email protected]>: > Hmm, I thought it was there in more recent versions too? The reason > that this is there is because we want 'fran.project' or 'frans' to use > the search path to resolve 'fransapp.project.svc.cluster.local' so > pods can reference the service without knowing the FQDN. > > Can you elaborate on how it's failing in the 1.0.8 environment? I > imagine the problem there is that there's probably a conflict on port > 53 on your masters which are also nodes? To work around this we've > moved skydns to port 8053, check master-config.yaml for > dnsConfig.bindAddress and see if it's binding to port 53 or 8053. If > you move it to 8053 and restart the master does it help? > > -- > Scott > > On Tue, Oct 4, 2016 at 4:25 AM, Fran Barrera <[email protected]> > wrote: > > Hi Scott, > > > > I have configured dnsmasq as you commented and working good in my > > environment, but I have another environment in 1.0.8 version and the > problem > > is the "option ndots:5" If i delete this option everything working good > but > > I don't know why Openshift set this automatically in /etc/resolv.conf > > > > I see in other version that this options is dissapeared but in older > version > > not. Is there any way to delete this option? > > > > Thanks, > > Fran > > > > 2016-10-03 14:43 GMT+02:00 Scott Dodson <[email protected]>: > >> > >> Maybe I'm misunderstanding the question, but you'd configure dnsmasq > >> to forward 'cluster.local' to skydns and all other requests to your > >> desired nameservers, place a file in /etc/dnsmasq.d/ like this > >> > >> strict-order > >> no-resolv > >> domain-needed > >> server=/cluster.local/172.30.0.1 > >> server=/30.172.in-addr.arpa/172.30.0.1 > >> server=4.4.4.4 > >> server=8.8.8.8 > >> > >> Again, the installer does this for you automatically using a > >> NetworkManager dispatcher script to configure dnsmasq. You can see > >> what it does here > >> > >> https://github.com/openshift/openshift-ansible/blob/master/ > roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh > >> > >> On Mon, Oct 3, 2016 at 3:41 AM, Fran Barrera <[email protected]> > >> wrote: > >> > Hi Scott, > >> > > >> > If I set dnsmasq in the node-config.yaml. How I can forward cluster > dns > >> > to > >> > skydns? Because Openshift services don't have any domain, right? > >> > > >> > Thanks, > >> > Fran > >> > > >> > 2016-09-30 14:56 GMT+02:00 Scott Dodson <[email protected]>: > >> >> > >> >> Fran, > >> >> > >> >> If you set dnsIP in your node-config.yaml file it will make that IP > >> >> address the first nameserver in your pod's resolv.conf. I don't know > >> >> how to add timeout options to pod's resolv.conf, but hopefully you > >> >> should have timeout issues. > >> >> > >> >> BTW, the installer should be configuring dnsmasq on each node and > >> >> setting dnsIP to the local host's IP address starting with Origin 1.2 > >> >> and OCP 3.2. dnsmasq is then responsible for forwarding cluster dns > to > >> >> skydns and other requests to the host's default resolver. > >> >> > >> >> -- > >> >> Scott > >> >> > >> >> On Fri, Sep 30, 2016 at 8:39 AM, Fran Barrera < > [email protected]> > >> >> wrote: > >> >> > Hi All, > >> >> > > >> >> > In my environment, the master is the DNS server (dnsmasq) and my > >> >> > problem > >> >> > is > >> >> > that I have very slow resolution. The resolv.conf of pods is: > >> >> > > >> >> > nameserver 172.30.0.1 > >> >> > nameserver master_ip > >> >> > > >> >> > I need to change this conf adding first the master IP or add a > >> >> > options > >> >> > timeout because the slow is because try first with kubernetes dns > and > >> >> > 10 > >> >> > seconds later try with dns master. I've followed this guide > >> >> > https://access.redhat.com/solutions/2215521 but not change > anything. > >> >> > > >> >> > Any helps? > >> >> > > >> >> > > >> >> > > >> >> > _______________________________________________ > >> >> > users mailing list > >> >> > [email protected] > >> >> > http://lists.openshift.redhat.com/openshiftmm/listinfo/users > >> >> > > >> > > >> > > > > > >
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