This is probably the same as https://bugzilla.redhat.com/show_bug.cgi?id=1419771 Can you look in the router log for the PANIC message to confirm? There is a Origin PR https://github.com/openshift/origin/pull/13494 that will fix this and it will be back-ported to 3.5 and 3.4.
Sorry, I missed the labels before. Given that it's probably this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1415112
*** This bug has been marked as a duplicate of bug 1434574 ***
What is the last modification time of /var/lib/haproxy/router/routes.json and /var/lib/haproxy/conf/haproxy.conf (and what is the current time when they ran the ls). Please run: > oc rsh router-... > date > ls -l /var/lib/haproxy/router/routes.json /var/lib/haproxy/conf/haproxy.conf And get me the output please.
*** This bug has been marked as a duplicate of bug 1419771 ***