kubespray/roles/dnsmasq/templates/01-kube-dns.conf.j2

#Listen on localhost
bind-interfaces
listen-address=0.0.0.0

addn-hosts=/etc/hosts

strict-order
# Forward k8s domain to kube-dns
server=/{{ dns_domain }}/{{ skydns_server }}
# Reply NXDOMAIN to bogus domains requests like com.cluster.local.cluster.local
local=/{{ bogus_domains }}

#Set upstream dns servers
{% if dnsmasq_upstream_dns_servers|length > 0 %}
{% for srv in dnsmasq_upstream_dns_servers %}
server={{ srv }}
{% endfor %}
{% endif %}
{% if system_and_upstream_dns_servers|length > 0 %}
{% for srv in system_and_upstream_dns_servers %}
server={{ srv }}
{% endfor %}
{% elif resolvconf_mode == 'host_resolvconf' %}
{# The default resolver is only needed when the hosts resolv.conf was modified by us. If it was not modified, we can rely on dnsmasq to reuse the systems resolv.conf #}
server={{ default_resolver }}
{% endif %}

{% if kube_log_level == '4' %}
log-queries
{% endif %}
no-resolv
bogus-priv
no-negcache
cache-size={{ cache_size }}
dns-forward-max={{ dns_forward_max }}
max-cache-ttl=10
max-ttl=20
log-facility=-