3e3ee0aeb1
* Add support for running a nodelocal dns cache
After encountering dns issues in a cluster I was recently working on I
noticed Kubernetes 1.13 introduced support for running a nodelocal dns
cache.
I believe this can usefull for more people.
73b548db06
https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/0030-nodelocal-dns-cache.md
* Add requested changes
* Add additional requested changes + documentation
* Add requested changes after review
* Replace incorrect variable
89 lines
2.2 KiB
YAML
89 lines
2.2 KiB
YAML
---
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- name: Kubernetes Apps | Wait for kube-apiserver
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uri:
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url: "{{ kube_apiserver_endpoint }}/healthz"
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validate_certs: no
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client_cert: "{{ kube_apiserver_client_cert }}"
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client_key: "{{ kube_apiserver_client_key }}"
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register: result
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until: result.status == 200
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retries: 10
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delay: 2
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when: inventory_hostname == groups['kube-master'][0]
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- name: Kubernetes Apps | Cleanup DNS
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import_tasks: tasks/cleanup_dns.yml
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when:
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- inventory_hostname == groups['kube-master'][0]
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tags:
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- upgrade
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- dnsmasq
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- coredns
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- kubedns
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- nodelocaldns
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- name: Kubernetes Apps | CoreDNS
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import_tasks: "tasks/coredns.yml"
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when:
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- dns_mode in ['coredns', 'coredns_dual']
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- inventory_hostname == groups['kube-master'][0]
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tags:
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- coredns
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- name: Kubernetes Apps | nodelocalDNS
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import_tasks: "tasks/nodelocaldns.yml"
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when:
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- enable_nodelocaldns == True
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- inventory_hostname == groups['kube-master'] | first
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tags:
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- nodelocaldns
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- name: Kubernetes Apps | KubeDNS
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import_tasks: "tasks/kubedns.yml"
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when:
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- dns_mode in ['kubedns', 'dnsmasq_kubedns']
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- inventory_hostname == groups['kube-master'][0]
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tags:
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- dnsmasq
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- name: Kubernetes Apps | Start Resources
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kube:
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name: "{{ item.item.name }}"
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namespace: "kube-system"
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kubectl: "{{ bin_dir }}/kubectl"
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resource: "{{ item.item.type }}"
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filename: "{{ kube_config_dir }}/{{ item.item.file }}"
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state: "latest"
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with_items:
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- "{{ kubedns_manifests.results | default({}) }}"
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- "{{ coredns_manifests.results | default({}) }}"
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- "{{ coredns_secondary_manifests.results | default({}) }}"
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- "{{ nodelocaldns_manifests.results | default({}) }}"
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when:
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- dns_mode != 'none'
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- inventory_hostname == groups['kube-master'][0]
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- not item is skipped
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register: resource_result
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until: resource_result is succeeded
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retries: 4
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delay: 5
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tags:
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- dnsmasq
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- coredns
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- kubedns
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- nodelocaldns
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loop_control:
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label: "{{ item.item.file }}"
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- name: Kubernetes Apps | Netchecker
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import_tasks: tasks/netchecker.yml
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when: deploy_netchecker
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tags:
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- netchecker
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- name: Kubernetes Apps | Dashboard
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import_tasks: tasks/dashboard.yml
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when: dashboard_enabled
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tags:
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- dashboard
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