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Agregando Clase 7

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Alejandro Lembke Barrientos
2022-09-21 00:21:33 -06:00
parent f98fbc4d85
commit 1fd932480f
9 changed files with 393 additions and 0 deletions
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11
Clase 7/Ejercicio/00-helm.txt Normal file
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install helm first:
docs: https://helm.sh/docs/intro/install/
#Before you can install the chart you will need to add the metrics-server repo to Helm.
1. helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
#After you've installed the repo you can install the chart.
2. helm upgrade --install metrics-server metrics-server/metrics-server --namespace kube-system
On docker desktop add: --set args={"--kubelet-insecure-tls=true"}
Link: https://artifacthub.io/packages/helm/metrics-server/metrics-server

198
Clase 7/Ejercicio/00-metrics-server.yml Normal file
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apiVersion: v1
kind: ServiceAccount
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
rbac.authorization.k8s.io/aggregate-to-admin: "true"
rbac.authorization.k8s.io/aggregate-to-edit: "true"
rbac.authorization.k8s.io/aggregate-to-view: "true"
name: system:aggregated-metrics-reader
rules:
- apiGroups:
- metrics.k8s.io
resources:
- pods
- nodes
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
rules:
- apiGroups:
- ""
resources:
- nodes/metrics
verbs:
- get
- apiGroups:
- ""
resources:
- pods
- nodes
verbs:
- get
- list
- watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server-auth-reader
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: metrics-server:system:auth-delegator
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:auth-delegator
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
k8s-app: metrics-server
name: system:metrics-server
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: system:metrics-server
subjects:
- kind: ServiceAccount
name: metrics-server
namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
ports:
- name: https
port: 443
protocol: TCP
targetPort: https
selector:
k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
k8s-app: metrics-server
name: metrics-server
namespace: kube-system
spec:
selector:
matchLabels:
k8s-app: metrics-server
strategy:
rollingUpdate:
maxUnavailable: 0
template:
metadata:
labels:
k8s-app: metrics-server
spec:
containers:
- args:
- --cert-dir=/tmp
- --secure-port=4443
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
- --kubelet-use-node-status-port
- --metric-resolution=15s
- --authorization-always-allow-paths=/livez,/readyz
- --kubelet-insecure-tls
image: k8s.gcr.io/metrics-server/metrics-server:v0.6.1
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 3
httpGet:
path: /livez
port: https
scheme: HTTPS
periodSeconds: 10
name: metrics-server
ports:
- containerPort: 4443
name: https
protocol: TCP
readinessProbe:
failureThreshold: 3
httpGet:
path: /readyz
port: https
scheme: HTTPS
initialDelaySeconds: 20
periodSeconds: 10
resources:
requests:
cpu: 100m
memory: 200Mi
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 1000
volumeMounts:
- mountPath: /tmp
name: tmp-dir
nodeSelector:
kubernetes.io/os: linux
priorityClassName: system-cluster-critical
serviceAccountName: metrics-server
volumes:
- emptyDir: {}
name: tmp-dir
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
labels:
k8s-app: metrics-server
name: v1beta1.metrics.k8s.io
spec:
group: metrics.k8s.io
groupPriorityMinimum: 100
insecureSkipTLSVerify: true
service:
name: metrics-server
namespace: kube-system
version: v1beta1
versionPriority: 100

13
Clase 7/Ejercicio/01-configmap.yaml Normal file
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apiVersion: v1
kind: ConfigMap
metadata:
name: node-app-configmap
namespace: default
data:
#WHITELIST URLS Default to http://localhost
WHITELIST_URLS: http://localhost,http://localhost:4000
PORT: "4000"
HOST_MONGO: mongodb-node-app-svc
PORT_MONGO: "27017"
DB_MONGO: app_db

9
Clase 7/Ejercicio/02-secret.yaml Normal file
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apiVersion: v1
kind: Secret
metadata:
name: node-app-secret
namespace: default
type: Opaque
data:
USER_MONGO: cm9vdA==
PASSWORD_MONGO: MTIzNA==

16
Clase 7/Ejercicio/03-service.yaml Normal file
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apiVersion: v1
kind: Service
metadata:
name: app-service
namespace: default
spec:
ports:
- name: 80-tcp
port: 80
protocol: TCP
targetPort: 4000
selector:
com.docker.project: node-app
type: LoadBalancer
status:
loadBalancer: {}

13
Clase 7/Ejercicio/04-db-svc.yaml Normal file
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kind: Service
apiVersion: v1
metadata:
name: mongodb-node-app-svc
namespace: default
spec:
selector:
app: mongodb-node-app
ports:
- protocol: TCP
name: mongodb-node-app
port: 27017
targetPort: 27017

65
Clase 7/Ejercicio/05-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: node-app
namespace: default
spec:
replicas: 1
selector:
matchLabels:
com.docker.project: node-app
template:
metadata:
labels:
com.docker.project: node-app
spec:
containers:
- name: node-app
image: aleleba/example-app:2.0.1
imagePullPolicy: Always
resources:
requests:
memory: "256Mi"
cpu: "800m"
limits:
memory: "512Mi"
cpu: "2000m"
env:
- name: PORT
valueFrom:
configMapKeyRef:
name: node-app-configmap
key: PORT
- name: WHITELIST_URLS
valueFrom:
configMapKeyRef:
name: node-app-configmap
key: WHITELIST_URLS
- name: HOST_MONGO
valueFrom:
configMapKeyRef:
name: node-app-configmap
key: HOST_MONGO
- name: PORT_MONGO
valueFrom:
configMapKeyRef:
name: node-app-configmap
key: PORT_MONGO
- name: DB_MONGO
valueFrom:
configMapKeyRef:
name: node-app-configmap
key: DB_MONGO
- name: USER_MONGO
valueFrom:
secretKeyRef:
name: node-app-secret
key: USER_MONGO
- name: PASSWORD_MONGO
valueFrom:
secretKeyRef:
name: node-app-secret
key: PASSWORD_MONGO
ports:
- containerPort: 80
protocol: TCP

49
Clase 7/Ejercicio/06-mongodb-stayfullset.yaml Normal file
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apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mongodb-node-app
namespace: default
spec:
replicas: 1
serviceName: mongodb-node-app-svc
selector:
matchLabels:
app: mongodb-node-app
template:
metadata:
labels:
app: mongodb-node-app
spec:
containers:
- name: mongodb-node-app
image: mongo:5.0.12
imagePullPolicy: Always
ports:
- containerPort: 27017
env:
- name: MONGO_DATA_DIR
value: /data/db
- name: MONGO_LOG_DIR
value: /dev/null
- name: MONGODB_USER
valueFrom:
secretKeyRef:
name: node-app-secret
key: USER_MONGO
- name: MONGO_INITDB_ROOT_USERNAME
valueFrom:
secretKeyRef:
name: node-app-secret
key: USER_MONGO
- name: MONGODB_PASS
valueFrom:
secretKeyRef:
name: node-app-secret
key: PASSWORD_MONGO
- name: MONGO_INITDB_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: node-app-secret
key: PASSWORD_MONGO
- name: MONGO_INITDB_DATABASE
value: admin

19
Clase 7/Ejercicio/07-hpa.yaml Normal file
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apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
name: node-app
namespace: default
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: node-app
minReplicas: 1
maxReplicas: 5
metrics:
- type: Resource
resource:
name: cpu
target:
type: Utilization
averageUtilization: 30