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Cleanup nodelocaldns configuration #11238

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Cleanup nodelocaldns configuration #11238

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001b16e
Fix nodelocaldns Corefile path
evan-a-a May 27, 2024
454be28
Reconcile nodelocaldns config with kubernetes sample config
evan-a-a May 27, 2024
c6d9c16
Remove upstreamsvc option from nodelocaldns
evan-a-a May 27, 2024
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Remove upstreamsvc option from nodelocaldns 
* Since we configure the upstream server through ansible templating,
this arugment has no impact on node-cache
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@evan-a-a
evan-a-a committed May 27, 2024
commit c6d9c16464ce0a856e4c8cd615b7daee6d6b3c19
2 changes: 0 additions & 2 deletions roles/kubernetes-apps/ansible/templates/nodelocaldns-daemonset.yml.j2
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Expand Up @@ -44,8 +44,6 @@ spec:
- {{ nodelocaldns_ip }}
- -conf
- /etc/Corefile
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how is this file configured ?

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Node-cache generates the Corefile from Corefile.base, substituting any templated values in the process.

- -upstreamsvc
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why removing the upstreamsvc?

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@evan-a-a evan-a-a May 28, 2024 •
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I explain this in the commit message, but this is a no-op in the Kubespray configuration, since we use Ansible to template the Corefile. The sole purpose of upstreamsvc is to replace __PILLAR__CLUSTER__DNS__ during templating from Corefile.base with the IP of the upstream service.

- coredns
{% if enable_nodelocaldns_secondary %}
- -skipteardown
{% else %}
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2 changes: 1 addition & 1 deletion roles/kubernetes-apps/ansible/templates/nodelocaldns-second-daemonset.yml.j2
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Expand Up @@ -39,7 +39,7 @@ spec:
requests:
cpu: {{ nodelocaldns_cpu_requests }}
memory: {{ nodelocaldns_memory_requests }}
args: [ "-localip", "{{ nodelocaldns_ip }}", "-conf", "/etc/Corefile", "-upstreamsvc", "coredns", "-skipteardown" ]
args: [ "-localip", "{{ nodelocaldns_ip }}", "-conf", "/etc/Corefile", "-skipteardown" ]
securityContext:
privileged: true
{% if nodelocaldns_bind_metrics_host_ip %}
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