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Add HA/LB endpoints for kube-apiserver

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* Add HA docs for API server.
* Add auto-evaluated internal endpoints and clarify the loadbalancer_apiserver
vars and usecases.
* Use facts for kube_apiserver to not repeat code and enable LB endpoints use.
* Use /healthz check for the wait-for apiserver.
* Use the single endpoint for kubelet instead of the list of apiservers
* Specify kube_apiserver_count to for HA layout

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
This commit is contained in:
Bogdan Dobrelya
2016-07-13 17:13:47 +02:00
parent af4c41f32e
commit 731d32afda
11 changed files with 130 additions and 43 deletions
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2
roles/kubernetes/node/templates/kubelet.j2
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@@ -7,7 +7,7 @@ KUBE_LOGGING="--logtostderr=true"
{% endif %}
KUBE_LOG_LEVEL="--v={{ kube_log_level | default('2') }}"
{% if inventory_hostname in groups['kube-node'] %}
KUBELET_API_SERVER="--api_servers={% for host in groups['kube-master'] %}https://{{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(hostvars[host]['ansible_default_ipv4']['address'])) }}:{{ kube_apiserver_port }}{% if not loop.last %},{% endif %}{% endfor %}"
KUBELET_API_SERVER="--api_servers={{ kube_apiserver_endpoint }}"
{% endif %}
# The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)
KUBELET_ADDRESS="--address={{ ip | default("0.0.0.0") }}"