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service-nginx01.yaml
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service-nginx01.yaml
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##
## https://kubernetes.io/docs/tasks/inject-data-application/define-environment-variable-container/
##
## https://www.baeldung.com/ops/kubernetes-pod-vs-deployment
# https://kubernetes.io/zh-cn/docs/concepts/services-networking/network-policies/
#
# 1. create app configuration, app container deployment, app sidecar deployment, service, hpa, probes, ingress
# 2. network policy to control ingress to app service
# 3. token policy to authentication access to app service
#
apiVersion: v1
kind: ServiceAccount
metadata:
name: zt-nginx-svc-account
---
#
# JWT Token:
# expire time: None by default
#
apiVersion: v1
kind: Secret
metadata:
name: zt-nginx-secret
annotations:
kubernetes.io/service-account.name: zt-nginx-svc-account
type: kubernetes.io/service-account-token
data:
extra: YmFyCg==
---
apiVersion: v1
kind: ConfigMap
metadata:
name: zt-nginx-configmap
data:
index.html: |
<html>
<body>
<h1>Welcome to My Website in Blue!</h1>
</body>
</html>
zt.conf: |
server {
listen 81;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
location /health {
return 200;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
sidecar.conf: |
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
#include /etc/nginx/conf.d/*.conf;
server {
listen 80;
server_name zt.localdev.me;
location / {
proxy_pass http://localhost:81;
}
}
}
# 类属性键；每一个键都映射到一个简单的值
player_initial_lives: "3"
ui_properties_file_name: "user-interface.properties"
# 类文件键
game.properties: |
enemy.types=aliens,monsters
player.maximum-lives=5
user-interface.properties: |
color.good=purple
color.bad=yellow
---
apiVersion: v1
kind: ConfigMap
metadata:
name: zt-app-configmap
data:
PG_PASS: bXlzZWNyZXRwYXNzd29yZA==
PG_HOST: localhost:5379
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: zt-nginx-deployment
labels:
version: v1
spec:
replicas: 2
selector:
matchLabels:
app: zt-nginx-pod
version: v1
template:
metadata:
labels:
app: zt-nginx-pod
version: v1
spec:
serviceAccountName: zt-nginx-svc-account
# sidecar
initContainers:
- name: appdoor
image: nginx:1.10
restartPolicy: Always
#command: ['sh', '-c', 'tail /opt/logs.txt']
volumeMounts:
- name: data
mountPath: /opt
- name: sidecar-config
mountPath: /etc/nginx/nginx.conf
subPath: nginx.conf
#
resources:
limits:
cpu: 100m
memory: 100Mi
requests:
cpu: 50m
memory: 50Mi
# main
containers:
- image: nginx:1.10 # Edit this for your reponame
#imagePullPolicy: Never
env:
- name: NGINX_HOST
value: zt.localdev.me
envFrom:
- configMapRef:
name: zt-app-configmap
#
resources:
limits:
cpu: 100m
memory: 100Mi
requests:
cpu: 50m
memory: 50Mi
name: zt-nginx-pod
#restartPolicy: Never
ports:
- containerPort: 81
- name: liveness-port
containerPort: 81
#
volumeMounts:
- name: html-volume
mountPath: /usr/share/nginx/html
- name: nginx-config
mountPath: /etc/nginx/conf.d
#
livenessProbe:
httpGet:
path: /health
port: liveness-port
httpHeaders:
- name: Custom-Header
value: Awesome
initialDelaySeconds: 3
periodSeconds: 3
timeoutSeconds: 10
failureThreshold: 3
readinessProbe:
httpGet:
path: /health
port: liveness-port
httpHeaders:
- name: Custom-Header
value: Awesome
initialDelaySeconds: 3
periodSeconds: 3
timeoutSeconds: 10
failureThreshold: 3
startupProbe:
httpGet:
path: /health
port: liveness-port
failureThreshold: 1
periodSeconds: 10
#
volumes:
- name: data
emptyDir: {}
- name: html-volume
# Use either ConfigMap or PersistentVolume
configMap:
name: zt-nginx-configmap
items:
- key: index.html
path: index.html
# persistentVolumeClaim:
# claimName: html-pvc
- name: nginx-config
configMap:
name: zt-nginx-configmap
items:
- key: zt.conf
path: default.conf
- name: sidecar-config
configMap:
name: zt-nginx-configmap
items:
- key: sidecar.conf
path: nginx.conf
- name: access-token
projected:
sources:
# 要为某 Pod 提供一个受众为 vault 并且有效期限为 2 小时的令牌 ??
- serviceAccountToken:
path: access-token
expirationSeconds: 600
audience: vault
---
apiVersion: v1
kind: Service
metadata:
labels:
app: zt-nginx-svc
version: v1
name: zt-nginx-svc
spec:
ports:
- port: 80
protocol: TCP
targetPort: 80
selector:
app: zt-nginx-pod
type: ClusterIP
---
# https://docs.openshift.com/container-platform/4.10/nodes/pods/nodes-pods-autoscaling.html
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
name: hpa-zt-nginx
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: zt-nginx-deployment
minReplicas: 3
maxReplicas: 10
metrics:
- type: Resource
resource:
name: cpu
target:
type: Utilization
averageUtilization: 50
- type: Resource
resource:
name: memory
target:
type: Utilization
averageUtilization: 50
behavior:
scaleDown:
policies:
- type: Pods
value: 4
periodSeconds: 60
- type: Percent
value: 10
periodSeconds: 60
selectPolicy: Min
stabilizationWindowSeconds: 300
scaleUp:
policies:
- type: Pods
value: 5
periodSeconds: 70
- type: Percent
value: 12
periodSeconds: 80
selectPolicy: Max
stabilizationWindowSeconds: 0