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- 노드포트(NodePort)
- 인그레스(Ingress)
# 노드포스(NodePort) 생성
# 마스터 노드 및 워크노드 정보
# kubectl get nodes -o wide
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
m-k8s Ready master 3d5h v1.18.4 192.168.56.10 <none> CentOS Linux 7 (Core) 3.10.0-1160.90.1.el7.x86_64 docker://18.9.9
w1-k8s Ready <none> 3d4h v1.18.4 192.168.56.101 <none> CentOS Linux 7 (Core) 3.10.0-1160.90.1.el7.x86_64 docker://18.9.9
w2-k8s Ready <none> 3d4h v1.18.4 192.168.56.102 <none> CentOS Linux 7 (Core) 3.10.0-1160.90.1.el7.x86_64 docker://18.9.9
w3-k8s Ready <none> 3d4h v1.18.4 192.168.56.103 <none> CentOS Linux 7 (Core) 3.10.0-1160.90.1.el7.x86_64 docker://18.9.9
# 파드 오브젝트 스펙 노드포트 서비스
# cat nodeport.yaml
apiVersion: v1
kind: Service # kind : Service
metadata: # Metadata 서비스의 이름
name: np-svc
spec: # Spec 셀렉터의 레이블 지정
selector:
app: np-pods
ports: # 사용할 프토토콜과 포트들을 지정
- name: http
protocol: TCP
port: 80
targetPort: 80
nodePort: 30000
type: NodePort # 서비스 타입을 설정
# 파드 생성
# kubectl create deployment np-pods --image=sysnet4admin/echo-hname
deployment.apps/np-pods created
# 파드 노드포트 서비스 생성
# kubectl create -f nodeport.yaml
# kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
np-pods-5767d54d4b-txwm4 1/1 Running 0 10m 172.16.103.169 w2-k8s <none> <none>
# kubectl get services
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
np-svc NodePort 10.104.110.226 <none> 80:30000/TCP 7m32s
# 인그레스(Ingress) 생성
# cat ingress-config.yaml
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: ingress-nginx
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
spec:
rules:
- http:
paths:
- path:
backend:
serviceName: hname-svc-default
servicePort: 80
- path: /ip
backend:
serviceName: ip-svc
servicePort: 80
- path: /your-directory
backend:
serviceName: your-svc
servicePort: 80
# cat ingress-nginx.yaml
# All of sources From https://raw.githubusercontent.com/kubernetes/ingress-nginx/nginx-0.30.0/deploy/static/mandatory.yaml
# clone from above to sysnet4admin
apiVersion: v1
kind: Namespace
metadata:
name: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
---
kind: ConfigMap
apiVersion: v1
metadata:
name: nginx-configuration
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
---
kind: ConfigMap
apiVersion: v1
metadata:
name: tcp-services
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
---
kind: ConfigMap
apiVersion: v1
metadata:
name: udp-services
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: nginx-ingress-serviceaccount
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
name: nginx-ingress-clusterrole
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
rules:
- apiGroups:
- ""
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
verbs:
- list
- watch
- apiGroups:
- ""
resources:
- nodes
verbs:
- get
- apiGroups:
- ""
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- ""
resources:
- events
verbs:
- create
- patch
- apiGroups:
- "extensions"
- "networking.k8s.io"
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- "extensions"
- "networking.k8s.io"
resources:
- ingresses/status
verbs:
- update
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: Role
metadata:
name: nginx-ingress-role
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
rules:
- apiGroups:
- ""
resources:
- configmaps
- pods
- secrets
- namespaces
verbs:
- get
- apiGroups:
- ""
resources:
- configmaps
resourceNames:
# Defaults to "<election-id>-<ingress-class>"
# Here: "<ingress-controller-leader>-<nginx>"
# This has to be adapted if you change either parameter
# when launching the nginx-ingress-controller.
- "ingress-controller-leader-nginx"
verbs:
- get
- update
- apiGroups:
- ""
resources:
- configmaps
verbs:
- create
- apiGroups:
- ""
resources:
- endpoints
verbs:
- get
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
name: nginx-ingress-role-nisa-binding
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: nginx-ingress-role
subjects:
- kind: ServiceAccount
name: nginx-ingress-serviceaccount
namespace: ingress-nginx
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: nginx-ingress-clusterrole-nisa-binding
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: nginx-ingress-clusterrole
subjects:
- kind: ServiceAccount
name: nginx-ingress-serviceaccount
namespace: ingress-nginx
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-ingress-controller
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
template:
metadata:
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
annotations:
prometheus.io/port: "10254"
prometheus.io/scrape: "true"
spec:
# wait up to five minutes for the drain of connections
terminationGracePeriodSeconds: 300
serviceAccountName: nginx-ingress-serviceaccount
nodeSelector:
kubernetes.io/os: linux
containers:
- name: nginx-ingress-controller
image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.30.0
args:
- /nginx-ingress-controller
- --configmap=$(POD_NAMESPACE)/nginx-configuration
- --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
- --udp-services-configmap=$(POD_NAMESPACE)/udp-services
- --publish-service=$(POD_NAMESPACE)/ingress-nginx
- --annotations-prefix=nginx.ingress.kubernetes.io
securityContext:
allowPrivilegeEscalation: true
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
# www-data -> 101
runAsUser: 101
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
ports:
- name: http
containerPort: 80
protocol: TCP
- name: https
containerPort: 443
protocol: TCP
livenessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 10
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 10
lifecycle:
preStop:
exec:
command:
- /wait-shutdown
---
apiVersion: v1
kind: LimitRange
metadata:
name: ingress-nginx
namespace: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/part-of: ingress-nginx
spec:
limits:
- min:
memory: 90Mi
cpu: 100m
type: Container
# cat ingress.yaml
apiVersion: v1
kind: Service
metadata:
name: nginx-ingress-controller
namespace: ingress-nginx
spec:
ports:
- name: http
protocol: TCP
port: 80
targetPort: 80
nodePort: 30100
- name: https
protocol: TCP
port: 443
targetPort: 443
nodePort: 30101
selector:
app.kubernetes.io/name: ingress-nginx
type: NodePort
# kubectl create deployment in-hname-pod --image=sysnet4admin/echo-hname
deployment.apps/in-hname-pod created
# kubectl create deployment in-ip-pod --image=sysnet4admin/echo-ip
deployment.apps/in-ip-pod created
# kubectl apply -f ingress-nginx.yaml
namespace/ingress-nginx created
configmap/nginx-configuration created
configmap/tcp-services created
configmap/udp-services created
serviceaccount/nginx-ingress-serviceaccount created
clusterrole.rbac.authorization.k8s.io/nginx-ingress-clusterrole created
role.rbac.authorization.k8s.io/nginx-ingress-role created
rolebinding.rbac.authorization.k8s.io/nginx-ingress-role-nisa-binding created
clusterrolebinding.rbac.authorization.k8s.io/nginx-ingress-clusterrole-nisa-binding created
deployment.apps/nginx-ingress-controller created
limitrange/ingress-nginx created
# kubectl apply -f ingress-config.yaml
ingress.networking.k8s.io/ingress-nginx configured
# kubectl apply -f ingress.yaml
service/nginx-ingress-controller created
# kubectl expose deployment in-hname-pod --name=hname-svc-default --port=80,443
service/hname-svc-default exposed
# kubectl expose deployment in-ip-pod --name=ip-svc --port=80,443
service/ip-svc exposed# kubectl get pods -n ingress-nginx
NAME READY STATUS RESTARTS AGE
nginx-ingress-controller-5bb8fb4bb6-mnx88 1/1 Running 0 23s
# kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-nginx <none> * 80 40m
# kubectl get services -n ingress-nginx
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
nginx-ingress-controller NodePort 10.101.20.235 <none> 80:30100/TCP,443:30101/TCP 20s
# kubectl get services
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
hname-svc-default ClusterIP 10.97.228.75 <none> 80/TCP,443/TCP 18s
ip-svc ClusterIP 10.108.49.235 <none> 80/TCP,443/TCP 9s
# kubectl get pods
NAME READY STATUS RESTARTS AGE
in-hname-pod-8565c86448-d8q9h 1/1 Running 0 2m40s
in-ip-pod-76bf6989d-j7pdk 1/1 Running 0 2m30s
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