am I 施 文翰(シ ブンカン) Wenhan Shi • 日立製作所 - Linux kernel module development/Support • Red Hat K.K. - GlusterFS/OpenShift Support • Canonical Japan K.K. - Ubuntu/OpenStack/Kubernetes Support • Rancher Lab/SUSE - Rancher Support • Kong Inc. - Solutions Engineer @shi_wenhan wenhan.shi@konghq.com
Kong for Kubernetes is a cloud native Kubernetes Ingress Controller • Kong Ingress Controller for Kubernetes(KIC) Github Intro https://docs.konghq.com/enterprise/2.5.x/deployment/installation/kong-for-kubernetes/#introduction
Kong and KIC will be deployed in one Pod. • Expose kubernetes’ service by Ingress Resource • KIC Receive event from API server and configure Kong • Kong container will Handle all traffic defined by Kong Ingress resources. Arch https://docs.konghq.com/kubernetes-ingress-controller/2.3.x/concepts/design/
method YAML Helm DataBase DB-less only DB-less or DB-based Config store ETCD ETCD or DB mode Available for OSS, Enterprise Pros Easy and quick Fully customizable Component s Proxy Yes Yes Admin API No Yes Manager (GUI) No Yes Dev Portal No Yes Vitals No Yes
mode? - Kong can be deploy in both DB-less or DB-related mode - Using a DB-less mode - Pros: - reduced dependencies: no need to manage a database - good fit for automation in CI/CD: configuration in a single source (local or Git) - Cons: - Higher memory usage - Not all the plugins are full Compatible in this mode - https://docs.konghq.com/konnect-platform/compatibility/plugins/ https://docs.konghq.com/gateway/2.8.x/reference/db-less-and-declarative-config/#using-kong-in-db-less-mode
with Kubernetes YAML - 1 - Need license file for Enterprise deployment - There is no postgre DB pod ## on Kubernetes native kubectl create namespace kong ## Kong Gateway on Kubernetes native kubectl create secret generic kong-enterprise-license --from-file=./license -n kong kubectl apply -f https://bit.ly/k4k8s-enterprise-install ## Kong Gateway (OSS) on Kubernetes native kubectl apply -f https://bit.ly/kong-ingress-dbless $ kubectl get pod -n kong NAME READY STATUS RESTARTS AGE svclb-kong-proxy-4sfn5 2/2 Running 0 103s ingress-kong-677b9ccbf8-tczsf 2/2 Running 3 (79s ago) 103s
with Helm - all default settings -1 - Deploy Kong using helm with all default settings ## pre-install kubectl create namespace kong helm repo add kong https://charts.konghq.com helm repo update ## Install Kong Gateway helm install kong/kong --generate-name
with Helm - all default settings - 2 - Verify ## By default, Kong is deployed in DB-less mode $ kubectl get pod NAME READY STATUS RESTARTS AGE svclb-kong-1650259566-kong-proxy-wfs7g 2/2 Running 0 90s kong-1650259566-kong-6b5d5c5758-psffx 2/2 Running 2 (87s ago) 90s ## Only kong proxy is available $ kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 39h kong-1650259566-kong-proxy LoadBalancer 10.43.40.186 10.0.134.197 80:31276/TCP,443:30182/TCP 49s $ http 10.0.134.197 $ http localhost:31276 HTTP/1.1 404 Not Found … { "message": "no Route matched with those values" }
with Helm - customize - 2 - Verify ## A Postgre DB pod is running and also a localpath of PV $ kubectl get pod -n kong NAME READY STATUS RESTARTS AGE my-kong-postgresql-0 1/1 Running 0 7m2s my-kong-kong-init-migrations--1-drgk9 0/1 Completed 0 7m2s my-kong-kong-57c589bf8c-xm6c8 2/2 Running 2 (5m54s ago) 7m2 $ kubectl get pv NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE pvc-fc7353d4-bb9f-4d9e-8f74-cb1cb8546f40 8Gi RWO Delete Bound kong/data-my-kong-postgresql-0 local-path 8m41s ## Have all the features enabled. $ kubectl get svc -n kong NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE my-kong-postgresql-headless ClusterIP None <none> 5432/TCP 9m11s my-kong-kong-proxy NodePort 10.43.119.198 <none> 80:31000/TCP,443:31254/TCP 9m11s my-kong-kong-admin NodePort 10.43.191.164 <none> 8001:31001/TCP 9m11s my-kong-kong-portal NodePort 10.43.118.111 <none> 8003:31003/TCP 9m11s my-kong-postgresql ClusterIP 10.43.55.81 <none> 5432/TCP 9m11s my-kong-kong-manager NodePort 10.43.86.108 <none> 8002:31002/TCP 9m11s
let’s deploy an echo service/pod 22 Deploy a service and expose it by Kong $ kubectl get pod -n echo NAME READY STATUS RESTARTS AGE echo-554cb8b48b-nknfw 1/1 Running 0 60s $ kubectl get svc -n echo NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE echo ClusterIP 10.43.57.39 <none> 80/TCP 66s
expose the echo service outside the Kubernetes cluster by defining Ingress rules. 24 Deploy a service and expose it by Kong # https://kubernetes.io/docs/concepts/services-networking/ingress/#the-ingress-resource $ echo ' apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: demo annotations: konghq.com/strip-path: "true” kubernetes.io/ingress.class: kong namespace: echo spec: rules: - http: paths: - path: /echo pathType: Prefix backend: service: name: echo port: number: 80 ' | kubectl apply -f - <<<<< Using Kong Ingress Controller <<<<< access path is /echo <<<<< target service is echo, port is 80
EC2 node (xxx.xxx.xxx.xxx) Kubernetes Cluster Kong Gateway Service “Echo” Admin API 31001 Kong Manager 31002 Kong Proxy 31000 Pod “echo” Ingress Rule “demo” 80 80 /echo http://xxx.xxx.xxx.xxx:31000/echo
the service - Rate Limit - setup - To enforce rate limiting plugin - annotate the service. - The plugin can also be applied at the Ingress or globally level - e.g. enforce a global rate limit for all services but enforce a different rate limit for specific services or consumers $ kubectl annotate svc echo konghq.com/plugins=rl-by-ip -n echo $ kubectl get svc -n echo -o yaml apiVersion: v1 items: - apiVersion: v1 kind: Service metadata: annotations: konghq.com/plugins: rl-by-ip <snip>
(3.113.112.202) Kubernetes Cluster Kong Gateway Service “Echo” Admin API 31001 Kong Manager 31002 Kong Proxy 31000 Pod “echo” Ingress Rule “demo” Ratelimit KongPlugin 80 80 /echo Environment now
the service - Using 3rd party Identity Provider - Openid connect plugin(OIDC) can be configured to use a 3rd party IDP - Auth0 - Amazon AWS Cognito - Connect2id - Curity - Dex - Gluu - Google - IdentityServer - Keycloak - Microsoft Azure Active Directory - Microsoft Active Directory Federation Services - Microsoft Live Connect - Okta - OneLogin - OpenAM - Paypal - PingFederate - Salesforce - WSO2 - Yahoo!
Kubernetes Cluster Kong Gateway Service “Echo” Admin API 31001 Kong Manager 31002 Kong Proxy 31000 Pod “echo” Ingress Rule “demo” KongPluginR atelimit KongPlugin openid-connect Consumer Jason 80 80 /echo Environment now
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