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Kubernetes Reliability Improvements

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- Exclude kubelet CPU/RAM (kube-reserved) from cgroup. It decreases a
  chance of overcommitment
- Add a possibility to modify Kubelet node-status-update-frequency
- Add a posibility to configure node-monitor-grace-period,
  node-monitor-period, pod-eviction-timeout for Kubernetes controller
  manager
- Add Kubernetes Relaibility Documentation with recomendations for
  various scenarios.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>
This commit is contained in:
Sergii Golovatiuk
2017-02-07 15:01:02 +01:00
parent ef10ce04e2
commit c07d60bc90
6 changed files with 126 additions and 6 deletions
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roles/kubernetes/node/defaults/main.yml
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@@ -12,6 +12,7 @@ kube_proxy_masquerade_all: true
# Limits for kube components and nginx load balancer app
kubelet_memory_limit: 512M
kubelet_cpu_limit: 100m
kubelet_status_update_frequency: 10s
kube_proxy_memory_limit: 2000M
kube_proxy_cpu_limit: 500m
kube_proxy_memory_requests: 256M