使用Ambassador API网关作为Istio入口吗？

huangapple
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英文:

use Ambassador api gateway as Istio ingress?

问题

我整天在互联网上搜索，但找不到一个完整而合适的示例，说明如何将Ambassador API网关用作Istio Ingress。Ambassador网站上关于Istio的默认文档不够清晰。所以能否有人提供一个完整详细的示例，说明如何在Istio服务网格中使用Ambassador API网关？

我的平台规格如下：
操作系统：Windows 10
容器平台：Docker Desktop
Kubernetes版本：1.10.11

英文:

every one i have been searching the internet whole day but can't find a complete and decent example of how to use ambassador api gateway as istio ingress. The default documentation at ambassador site regarding istio isn't clear enough. So can someone please provide a complete and detailed example of how to use ambassador Api gateway along with istio service mesh?

My platform specs are
OS: Windows10
Container-Platform: Docker-desktop
Kubernetes-version: 1.10.11

答案1

得分: 1

这个主题在Ambassador 文档中有详细解释：

Ambassador是一个针对微服务的Kubernetes本地API网关。Ambassador部署在您网络的边缘，并将传入的流量路由到您的内部服务（也称为“南北”流量）。 Istio 是面向微服务的服务网格，旨在为服务之间的流量（也称为“东西”流量）添加应用程序级别的第7层观察、路由和弹性。Istio和Ambassador都是使用Envoy构建的。

按照这个链接，了解如何逐步配置Ambassador与Istio一起使用。

此外，您需要根据Istio的要求更新您的Kubernetes版本：

  • Istio 1.4 和 1.3 已经与Kubernetes版本 1.13、1.14、1.15 进行了测试。

  • Istio 1.2 已经与Kubernetes版本 1.12、1.13、1.14 进行了测试。

我建议避免使用较旧的版本。

英文:

This topic is explained in detail in Ambassador documentation:

>Ambassador is a Kubernetes-native API gateway for microservices. Ambassador is deployed at the edge of your network, and routes incoming traffic to your internal services (aka "north-south" traffic). Istio is a service mesh for microservices, and is designed to add application-level Layer (L7) observability, routing, and resilience to service-to-service traffic (aka "east-west" traffic). Both Istio and Ambassador are built using Envoy.

Follow this link for step-by-step guide how to get Ambassador working with Istio.

Additionally You will need to update Your Kubernetes version as Istio requirements are:

  • Istio 1.4 and 1.3 has been tested with Kubernetes: 1.13, 1.14, 1.15.

  • Istio 1.2 has been tested with Kubernetes: 1.12, 1.13, 1.14.

I suggest avoiding older versions.

答案2

得分: 0

以下是您要翻译的内容：

"After many hours I succeded integrating Ambassador 1.8 with Istio 1.7.3. The mTLS integration was really tricky.

First I upgraded Kubernetes to the latest one (1.19.2) with the following extraArgs:

extraArgs:
service-account-issuer: kubernetes.default.svc
service-account-signing-key-file: /etc/kubernetes/pki/sa.key
Then installed Istio with the default profile.

Then I went on with the documentation Piotr mentioned, but the Ambassador pod did not want to start. So I compared the side car in the docs line-by-line with a side car generated automatically by Istio in another pod. Finally I got to the following working deployment yaml:

apiVersion: apps/v1

kind: Deployment

metadata:

name: ambassador

namespace: rocket

spec:

replicas: 1

selector:

matchLabels:

service: ambassador

template:

metadata:

annotations:

consul.hashicorp.com/connect-inject: 'false'

sidecar.istio.io/inject: 'false'

labels:

service: ambassador

app.kubernetes.io/managed-by: getambassador.io

spec:

affinity:

podAntiAffinity:

preferredDuringSchedulingIgnoredDuringExecution:

- podAffinityTerm:

labelSelector:

matchLabels:

service: ambassador

topologyKey: kubernetes.io/hostname

weight: 100

containers:

- name: ambassador

image: docker.io/datawire/ambassador:1.8.0

env:

- name: AMBASSADOR_NAMESPACE

valueFrom:

fieldRef:

fieldPath: metadata.namespace

- name: HOST_IP

valueFrom:

fieldRef:

fieldPath: status.hostIP

- name: REDIS_URL

value: ambassador-redis:6379

- name: AMBASSADOR_URL

value: https://ambassador.rocket.svc.cluster.local

- name: POLL_EVERY_SECS

value: '60'

- name: AMBASSADOR_INTERNAL_URL

value: https://127.0.0.1:8443

- name: AMBASSADOR_SINGLE_NAMESPACE

value: "YES"

- name: AMBASSADOR_ID

value: "ambassador-rocket"

# Necessary to run the istio-proxy sidecar

- name: AMBASSADOR_ENVOY_BASE_ID

value: "1"

ports:

- containerPort: 8080

name: http

- containerPort: 8443

name: https

- containerPort: 8877

name: http-admin

livenessProbe:

httpGet:

path: /ambassador/v0/check_alive

port: http-admin

periodSeconds: 3

readinessProbe:

httpGet:

path: /ambassador/v0/check_ready

port: http-admin

periodSeconds: 3

resources:

limits:

cpu: 1000m

memory: 600Mi

requests:

cpu: 200m

memory: 300Mi

securityContext:

allowPrivilegeEscalation: false

volumeMounts:

- mountPath: /tmp/ambassador-pod-info

name: ambassador-pod-info

- mountPath: /etc/istio-certs/

name: istio-certs

- name: istio-proxy

# Use the same version as your Istio installation

image: docker.io/istio/proxyv2:1.7.3

args:

- proxy

- sidecar

- --domain

- $(POD_NAMESPACE).svc.cluster.local

- --serviceCluster

- istio-proxy-ambassador.$(POD_NAMESPACE)

- --discoveryAddress

- istiod.istio-system.svc:15012

- --connectTimeout

- 10s

- --statusPort

- "15020"

- --trust-domain=cluster.local

- --controlPlaneBootstrap=false

env:

- name: OUTPUT_CERTS

value: "/etc/istio-certs"

- name: JWT_POLICY

value: third-party-jwt

- name: PILOT_CERT_PROVIDER

value: istiod

- name: CA_ADDR

value: istiod.istio-system.svc:15012

- name: ISTIO_META_MESH_ID

value: cluster.local

- name: POD_NAME

valueFrom:

fieldRef:

fieldPath: metadata.name

- name: POD_NAMESPACE

valueFrom:

fieldRef:

fieldPath: metadata.namespace

- name: INSTANCE_IP

valueFrom:

fieldRef:

fieldPath: status.podIP

- name: SERVICE_ACCOUNT

valueFrom:

fieldRef:

fieldPath: spec.serviceAccountName

- name: HOST_IP

valueFrom:

fieldRef:

fieldPath: status.hostIP

- name: ISTIO_META_POD_NAME

valueFrom:

fieldRef:

apiVersion: v1

fieldPath: metadata.name

- name: ISTIO_META_CONFIG_NAMESPACE

valueFrom:

fieldRef:

apiVersion: v1

fieldPath: metadata.namespace

- name: ISTIO_META_CLUSTER_ID

value: Kubernetes

imagePullPolicy: IfNotPresent

resources:

limits:

cpu: 2000m

memory: 1024Mi

requests:

cpu: 100m

memory: 128Mi

readinessProbe:

failureThreshold: 30

httpGet:

path: /healthz/ready

port: 15020

scheme: HTTP

initialDelaySeconds: 1

periodSeconds: 2

successThreshold: 1

timeoutSeconds: 1

volumeMounts:

- mountPath: /var/run/secrets/istio

name: istiod-ca-cert

- mountPath: /etc/istio/proxy

name: istio-envoy

- mountPath: /etc/istio-certs/

name: istio-certs

- mountPath: /var/run/secrets/tokens

name: istio-token

securityContext:

runAsUser: 0

volumes:

- name: istio-certs

emptyDir:

medium: Memory

- name: istiod-ca-cert

configMap:

defaultMode: 420

name: istio-ca-root-cert

- name: istio-envoy

emptyDir:

medium: Memory

- name: istio-token

projected:

defaultMode: 420

sources:

- serviceAccountToken:

audience: istio-ca

expirationSeconds: 43200

path: istio-token

- downwardAPI:



英文:

After many hours I succeded integrating Ambassador 1.8 with Istio 1.7.3. The mTLS integration was really tricky.


First I upgraded Kubernetes to the latest one (1.19.2) with the following extraArgs:


   			  extraArgs:

service-account-issuer: kubernetes.default.svc

service-account-signing-key-file: /etc/kubernetes/pki/sa.key

Then installed Istio with the default profile.


Then I went on with the [documentation][1] Piotr mentioned, but the Ambassador pod did not want to start. So I compared the side car in the docs line-by-line with a side car generated automatically by Istio in another pod. Finally I got to the following working deployment yaml:

<pre>

apiVersion: apps/v1

kind: Deployment

metadata:

name: ambassador

namespace: rocket

spec:

replicas: 1

selector:

matchLabels:

service: ambassador

template:

metadata:

annotations:

consul.hashicorp.com/connect-inject: 'false'

sidecar.istio.io/inject: 'false'

labels:

service: ambassador

app.kubernetes.io/managed-by: getambassador.io

spec:

affinity:

podAntiAffinity:

preferredDuringSchedulingIgnoredDuringExecution:

- podAffinityTerm:

labelSelector:

matchLabels:

service: ambassador

topologyKey: kubernetes.io/hostname

weight: 100

containers:

- name: ambassador

image: docker.io/datawire/ambassador:1.8.0

env:

- name: AMBASSADOR_NAMESPACE

valueFrom:

fieldRef:

fieldPath: metadata.namespace

- name: HOST_IP

valueFrom:

fieldRef:

fieldPath: status.hostIP

- name: REDIS_URL

value: ambassador-redis:6379

- name: AMBASSADOR_URL

value: https://ambassador.rocket.svc.cluster.local

- name: POLL_EVERY_SECS

value: '60'

- name: AMBASSADOR_INTERNAL_URL

value: https://127.0.0.1:8443

- name: AMBASSADOR_SINGLE_NAMESPACE

value: "YES"

- name: AMBASSADOR_ID

value: "ambassador-rocket"

# Necessary to run the istio-proxy sidecar

- name: AMBASSADOR_ENVOY_BASE_ID

value: "1"

ports:

- containerPort: 8080

name: http

- containerPort: 8443

name: https

- containerPort: 8877

name: http-admin

livenessProbe:

httpGet:

path: /ambassador/v0/check_alive

port: http-admin

periodSeconds: 3

readinessProbe:

httpGet:

path: /ambassador/v0/check_ready

port: http-admin

periodSeconds: 3

resources:

limits:

cpu: 1000m

memory: 600Mi

requests:

cpu: 200m

memory: 300Mi

securityContext:

allowPrivilegeEscalation: false

volumeMounts:

- mountPath: /tmp/ambassador-pod-info

name: ambassador-pod-info

- mountPath: /etc/istio-certs/

name: istio-certs

- name: istio-proxy

# Use the same version as your Istio installation

image: docker.io/istio/proxyv2:1.7.3

args:

- proxy

- sidecar

- --domain

- $(POD_NAMESPACE).svc.cluster.local

- --serviceCluster

- istio-proxy-ambassador.$(POD_NAMESPACE)

- --discoveryAddress

- istiod.istio-system.svc:15012

- --connectTimeout

- 10s

- --statusPort

- "15020"

- --trust-domain=cluster.local

- --controlPlaneBootstrap=false

env:

- name: OUTPUT_CERTS

value: "/etc/istio-certs"

- name: JWT_POLICY

value: third-party-jwt

- name: PILOT_CERT_PROVIDER

value: istiod

- name: CA_ADDR

value: istiod.istio-system.svc:15012

- name: ISTIO_META_MESH_ID

value: cluster.local

- name: POD_NAME

valueFrom:

fieldRef:

fieldPath: metadata.name

- name: POD_NAMESPACE

valueFrom:

fieldRef:

fieldPath: metadata.namespace

- name: INSTANCE_IP

valueFrom:

fieldRef:

fieldPath: status.podIP

- name: SERVICE_ACCOUNT

valueFrom:

fieldRef:

fieldPath: spec.serviceAccountName

- name: HOST_IP

valueFrom:

fieldRef:

fieldPath: status.hostIP

- name: ISTIO_META_POD_NAME

valueFrom:

fieldRef:

apiVersion: v1

fieldPath: metadata.name

- name: ISTIO_META_CONFIG_NAMESPACE

valueFrom:

fieldRef:

apiVersion: v1

fieldPath: metadata.namespace

- name: ISTIO_META_CLUSTER_ID

value: Kubernetes

imagePullPolicy: IfNotPresent

resources:

limits:

cpu: 2000m

memory: 1024Mi

requests:

cpu: 100m

memory: 128Mi

readinessProbe:

failureThreshold: 30

httpGet:

path: /healthz/ready

port: 15020

scheme: HTTP

initialDelaySeconds: 1

periodSeconds: 2

successThreshold: 1

timeoutSeconds: 1

volumeMounts:

- mountPath: /var/run/secrets/istio

name: istiod-ca-cert

- mountPath: /etc/istio/proxy

name: istio-envoy

- mountPath: /etc/istio-certs/

name: istio-certs

- mountPath: /var/run/secrets/tokens

name: istio-token

securityContext:

runAsUser: 0

volumes:

- name: istio-certs

emptyDir:

medium: Memory

- name: istiod-ca-cert

configMap:

defaultMode: 420

name: istio-ca-root-cert

- name: istio-envoy

emptyDir:

medium: Memory

- name: istio-token

projected:

defaultMode: 420

sources:

- serviceAccountToken:

audience: istio-ca

expirationSeconds: 43200

path: istio-token

- downwardAPI:

items:

- fieldRef:

fieldPath: metadata.labels

path: labels

name: ambassador-pod-info

restartPolicy: Always

securityContext:

runAsUser: 8888

serviceAccountName: ambassador

terminationGracePeriodSeconds: 0

</pre>

Note: I prefer running one Istio per cluster and one Ambassador per namespace, so I put the Ambassador pod and my other pods into the "rocket" namespace.


  [1]: https://www.getambassador.io/docs/latest/howtos/istio/
huangapple
  • 本文由 发表于 2020年1月6日 22:35:43
  • 转载请务必保留本文链接：https://go.coder-hub.com/59613934.html
  • ambassador
  • docker-desktop
  • istio
  • kubernetes
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