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[stable] Add a Helm chart for k8s-spot-rescheduler (#4826)
* Initial commit * If statement for rbac enabled fix * Add readme file * Readme update * Add a home variable * Add NOTES.txt * Add OWNERS * Change the way how cmd options are read * Use RBAC best practices * Move to stable channel * Add a NOTES message * Change order
This commit is contained in:
Alen Komljen
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k8s-ci-robot
k8s-ci-robot
parent
cd1879797e
commit
fe979a2a9e
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# Patterns to ignore when building packages.
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# This supports shell glob matching, relative path matching, and
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# negation (prefixed with !). Only one pattern per line.
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.DS_Store
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# Common VCS dirs
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.git/
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.gitignore
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.bzr/
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.bzrignore
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.hg/
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.hgignore
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.svn/
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# Common backup files
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*.swp
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*.bak
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*.tmp
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*~
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# Various IDEs
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.project
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.idea/
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*.tmproj
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apiVersion: v1
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appVersion: "v0.1.1"
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description: A k8s-spot-rescheduler Helm chart for Kubernetes
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name: k8s-spot-rescheduler
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version: 0.1.0
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keywords:
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- spot
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- rescheduler
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home: https://github.com/pusher/k8s-spot-rescheduler
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sources:
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- https://github.com/pusher/k8s-spot-rescheduler
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maintainers:
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- name: komljen
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email: alen.komljen@live.com
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approvers:
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- komljen
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reviewers:
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- komljen
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# Kubernetes AWS EC2 Spot Rescheduler
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This chart installs the [k8s-spot-rescheduler](https://github.com/pusher/k8s-spot-rescheduler).
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## Purpose
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Spot rescheduler will reschedule pods that are already running on on-demand instances. Based on worker labels it will move pods to spot instances. It can work together with [Cluster Autoscaler](https://github.com/kubernetes/charts/tree/master/stable/cluster-autoscaler) if you want to scale on-demand instances back to zero.
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## Installation
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You should install this chart into the `kube-system` namespace:
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```
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helm install \
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--namespace kube-system \
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incubator/k8s-spot-rescheduler
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```
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If your cluster has RBAC enabled, run this command:
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```
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helm install \
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--namespace kube-system \
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--set rbac.enabled=true \
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incubator/k8s-spot-rescheduler
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```
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## Configuration
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Add the parameters to `cmdOptions` which you want to use. Here is [the full list of available options](https://github.com/pusher/k8s-spot-rescheduler#flags).
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To verify that k8s-spot-rescheduler has started, run:
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kubectl --namespace={{ .Release.Namespace }} get pods -l "app={{ template "k8s-spot-rescheduler.name" . }},release={{ .Release.Name }}"
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{{/* vim: set filetype=mustache: */}}
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{{/*
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Expand the name of the chart.
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*/}}
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{{- define "k8s-spot-rescheduler.name" -}}
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{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{/*
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Create a default fully qualified app name.
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We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
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If release name contains chart name it will be used as a full name.
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*/}}
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{{- define "k8s-spot-rescheduler.fullname" -}}
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{{- if .Values.fullnameOverride -}}
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{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
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{{- else -}}
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{{- $name := default .Chart.Name .Values.nameOverride -}}
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{{- if contains $name .Release.Name -}}
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{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
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{{- else -}}
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{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{/*
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Create chart name and version as used by the chart label.
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*/}}
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{{- define "k8s-spot-rescheduler.chart" -}}
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{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
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{{- end -}}
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{{/*
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Create the name of the service account to use
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*/}}
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{{- define "k8s-spot-rescheduler.serviceAccountName" -}}
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{{- if .Values.serviceAccount.create -}}
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{{ default (include "k8s-spot-rescheduler.fullname" .) .Values.serviceAccount.name }}
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{{- else -}}
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{{ default "default" .Values.serviceAccount.name }}
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{{- end -}}
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{{- end -}}
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{{- if .Values.rbac.create }}
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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name: {{ template "k8s-spot-rescheduler.fullname" . }}
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labels:
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app: {{ template "k8s-spot-rescheduler.name" . }}
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chart: {{ template "k8s-spot-rescheduler.chart" . }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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rules:
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# For leader election
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- apiGroups:
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- ""
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resources:
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- endpoints
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verbs:
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- get
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- update
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- create
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- apiGroups:
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- ""
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resources:
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- events
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verbs:
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- create
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# For listing and watching items
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- apiGroups:
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- ""
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resources:
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- nodes
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- pods
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- replicasets
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- replicationcontrollers
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- services
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- statefulsets
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- poddisruptionbudgets
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- persistentvolumes
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- persistentvolumeclaims
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verbs:
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- list
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- get
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- watch
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- apiGroups:
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- apps
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resources:
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- statefulsets
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verbs:
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- list
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- get
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- watch
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- apiGroups:
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- extensions
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resources:
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- replicasets
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verbs:
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- list
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- get
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- watch
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- apiGroups:
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- policy
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resources:
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- poddisruptionbudgets
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verbs:
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- list
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- get
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- watch
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# For rescheduling pods
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- apiGroups:
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- ""
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resources:
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- nodes
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verbs:
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- update
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- apiGroups:
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- ""
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resources:
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- pods/eviction
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verbs:
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- create
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{{- end }}
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{{- if .Values.rbac.create }}
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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name: {{ template "k8s-spot-rescheduler.fullname" . }}
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labels:
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app: {{ template "k8s-spot-rescheduler.name" . }}
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chart: {{ template "k8s-spot-rescheduler.chart" . }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: {{ template "k8s-spot-rescheduler.fullname" . }}
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subjects:
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- kind: ServiceAccount
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name: {{ template "k8s-spot-rescheduler.serviceAccountName" . }}
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namespace: {{ .Release.Namespace }}
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{{- end }}
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apiVersion: apps/v1beta2
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kind: Deployment
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metadata:
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name: {{ template "k8s-spot-rescheduler.fullname" . }}
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labels:
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app: {{ template "k8s-spot-rescheduler.name" . }}
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chart: {{ template "k8s-spot-rescheduler.chart" . }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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replicas: {{ .Values.replicaCount }}
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selector:
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matchLabels:
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app: {{ template "k8s-spot-rescheduler.name" . }}
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release: {{ .Release.Name }}
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template:
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metadata:
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labels:
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app: {{ template "k8s-spot-rescheduler.name" . }}
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release: {{ .Release.Name }}
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spec:
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serviceAccountName: {{ template "k8s-spot-rescheduler.serviceAccountName" . }}
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containers:
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- name: {{ .Chart.Name }}
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image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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command:
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- rescheduler
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- --namespace={{ .Release.Namespace }}
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{{- range $key, $value := .Values.cmdOptions }}
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- --{{ $key }}{{ if $value }}={{ $value }}{{ end }}
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{{- end }}
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ports:
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- name: http
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containerPort: 9235
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resources:
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{{ toYaml .Values.resources | indent 12 }}
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{{- if .Values.serviceAccount.create }}
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: {{ template "k8s-spot-rescheduler.serviceAccountName" . }}
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labels:
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app: {{ template "k8s-spot-rescheduler.name" . }}
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chart: {{ template "k8s-spot-rescheduler.chart" . }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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{{- end }}
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# Default values for k8s-spot-rescheduler.
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# This is a YAML-formatted file.
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# Declare variables to be passed into your templates.
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replicaCount: 1
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image:
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repository: quay.io/pusher/k8s-spot-rescheduler
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tag: v0.1.1
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pullPolicy: IfNotPresent
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# The full list of available options https://github.com/pusher/k8s-spot-rescheduler#flags
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cmdOptions:
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v: 2
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running-in-cluster: true
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housekeeping-interval: 10s
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node-drain-delay: 10m
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pod-eviction-timeout: 2m
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max-graceful-termination: 2m
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listen-address: 0.0.0.0:9235
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on-demand-node-label: node-role.kubernetes.io/worker
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spot-node-label: node-role.kubernetes.io/spot-worker
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resources: {}
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# We usually recommend not to specify default resources and to leave this as a conscious
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# choice for the user. This also increases chances charts run on environments with little
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# resources, such as Minikube. If you do want to specify resources, uncomment the following
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# lines, adjust them as necessary, and remove the curly braces after 'resources:'.
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# limits:
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# cpu: 100m
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# memory: 128Mi
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# requests:
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# cpu: 100m
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# memory: 128Mi
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rbac:
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# Specifies whether RBAC resources should be created
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create: true
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serviceAccount:
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# Specifies whether a ServiceAccount should be created
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create: true
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# The name of the ServiceAccount to use.
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# If not set and create is true, a name is generated using the fullname template
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name:
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