Hi, I also had to open a different port (8053) in iptables of master.
Best Regards, Fran. 2016-01-29 17:07 GMT+01:00 Clayton Coleman <[email protected]>: > If you want to run DNSMasq on your masters, you'll need to configure > OpenShift to run DNS on a different port. You can do that by modifying > your config file. > > On Fri, Jan 29, 2016 at 12:16 AM, Dean Peterson <[email protected]> > wrote: > >> Oh boy, well thank you for the information. I looked at my old machine >> running openshift origin 1.0.7 and it has dnsmasq running on port 53 and >> things seem to work fine. External traffic routes to my containers running >> in openshift. Also, I did have my setup running on this new machine for a >> couple of days and things with dnsmasq running on 53 seemed to work too. >> Is giving port 53 over to openshift really necessary? >> >> On Thu, Jan 28, 2016 at 10:28 PM, Michael Surbey <[email protected]> >> wrote: >> >>> Port 53 is reserved for the Domain Name System (DNS). >>> >>> In your case it is the DNS cacher "/usr/sbin/dnsmasq" of the package >>> dnsmasq-base that's causing this error message. >>> >>> This pre-installed package is a dependency of network-manager, the >>> Network Manager of your desktop environment (e.g. Unity, GNOME, …). >>> >>> If you'd like to keep NetworkManager alive, you can create a custom DNS >>> in order to move the SkyDNS server to a different port (i.e. 8053) and >>> have the dnsmasq server forward local requests to it by installing >>> dnsmasq (fully) and following these guides: >>> >>> - http://red.ht/1Im8qLI >>> - http://bit.ly/1J5FCHf >>> >>> Otherwise, consider the following comments - http://bit.ly/23x4NK2 - >>> before attempting to remove dnsmasq-base or kill port 53. >>> >>> Sincerely, >>> >>> Mike >>> On 01/28/2016 10:03 PM, Dean Peterson wrote: >>> > I installed RHEL 7.2 from scratch, then installed Docker and >>> downloaded and >>> > started Openshift 1.1.1. I had been having trouble getting this >>> version to >>> > run reliably. I noticed just recently on startup it was complaining >>> about >>> > port 53 already being bound. I saw that dnsmasq was using the port. I >>> > killed dnsmasq and restarted openshift. Now when I look to see what is >>> > using port 53; openshift is (as I would expect). I am wondering; does >>> RHEL >>> > 7.2 start dnsmasq or does installing the latest version of docker >>> available >>> > to RHEL start it? It seems, Openshift being closely linked to RHEL, >>> this >>> > should be known and mentioned prominently - dnsmasq should be stopped >>> > before starting Openshift. >>> > >>> > >>> > >>> > _______________________________________________ >>> > users mailing list >>> > [email protected] >>> > http://lists.openshift.redhat.com/openshiftmm/listinfo/users >>> > >>> >> >> >> _______________________________________________ >> users mailing list >> [email protected] >> http://lists.openshift.redhat.com/openshiftmm/listinfo/users >> >> > > _______________________________________________ > users mailing list > [email protected] > http://lists.openshift.redhat.com/openshiftmm/listinfo/users > >
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