k3s-knative-kourier Knative Serving hello-world
k3s-knative-kourier Knative Serving hello-world
后端云
发布于 2022-11-25 17:19:52
发布于 2022-11-25 17:19:52
代码可运行
运行总次数：0
代码可运行
Since Knative has its own network layer, we need to disable k3s’ Traefik during its installation
[root@centos9 tt]# export KUBECONFIG="/var/lib/rancher/k3s/server/cred/admin.kubeconfig"[root@centos9 tt]# curl -sfL https://get.k3s.io | sh -s - --disable traefik[INFO] Finding release for channel stable[INFO] Using v1.24.3+k3s1 as release[INFO] Downloading hash https://github.com/k3s-io/k3s/releases/download/v1.24.3+k3s1/sha256sum-amd64.txt[INFO] Skipping binary downloaded, installed k3s matches hashRancher K3s Common (stable) 4.1 kB/s | 2.9 kB 00:00
Package k3s-selinux-1.2-2.el8.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete![INFO] Skipping /usr/local/bin/kubectl symlink to k3s, command exists in PATH at /usr/bin/kubectl[INFO] Skipping /usr/local/bin/crictl symlink to k3s, already exists[INFO] Skipping /usr/local/bin/ctr symlink to k3s, already exists[INFO] Creating killall script /usr/local/bin/k3s-killall.sh[INFO] Creating uninstall script /usr/local/bin/k3s-uninstall.sh[INFO] env: Creating environment file /etc/systemd/system/k3s.service.env[INFO] systemd: Creating service file /etc/systemd/system/k3s.service[INFO] systemd: Enabling k3s unit
Created symlink /etc/systemd/system/multi-user.target.wants/k3s.service → /etc/systemd/system/k3s.service.[INFO] systemd: Starting k3s正在删除traefik
[root@centos9 ~]# kubectl get pod -ANAMESPACE NAME READY STATUS RESTARTS AGE
kube-system local-path-provisioner-7b7dc8d6f5-qxscd 1/1 Running 0 57m
kube-system svclb-traefik-089ff14b-pf7b9 2/2 Running 0 56m
kube-system coredns-b96499967-x277m 1/1 Running 0 57m
kube-system metrics-server-668d979685-k7wl7 1/1 Running 0 57m
kube-system traefik-7cd4fcff68-ddr6q 1/1 Running 0 56m
kube-system helm-delete-traefik-98xsn 0/1 ContainerCreating 0 0s
kube-system helm-delete-traefik-crd-85kx9 0/1 ContainerCreating 0 0sInstall Knative Serving
[root@centos9 tt]# export KNATIVE_VERSION="1.7.1"[root@centos9 tt]# kubectl apply --filename "https://github.com/knative/serving/releases/download/v$KNATIVE_VERSION/serving-crds.yaml"error: unable to read URL "https://github.com/knative/serving/releases/download/v1.7.1/serving-crds.yaml", server reported 404 Not Found, status code=404[root@centos9 tt]# kubectl apply --filename "https://github.com/knative/serving/releases/download/knative-v$KNATIVE_VERSION/serving-crds.yaml"customresourcedefinition.apiextensions.k8s.io/certificates.networking.internal.knative.dev created
customresourcedefinition.apiextensions.k8s.io/configurations.serving.knative.dev created
customresourcedefinition.apiextensions.k8s.io/clusterdomainclaims.networking.internal.knative.dev created
customresourcedefinition.apiextensions.k8s.io/domainmappings.serving.knative.dev created
customresourcedefinition.apiextensions.k8s.io/ingresses.networking.internal.knative.dev created
customresourcedefinition.apiextensions.k8s.io/metrics.autoscaling.internal.knative.dev created
customresourcedefinition.apiextensions.k8s.io/podautoscalers.autoscaling.internal.knative.dev created
customresourcedefinition.apiextensions.k8s.io/revisions.serving.knative.dev created
customresourcedefinition.apiextensions.k8s.io/routes.serving.knative.dev created
customresourcedefinition.apiextensions.k8s.io/serverlessservices.networking.internal.knative.dev created
customresourcedefinition.apiextensions.k8s.io/services.serving.knative.dev created
customresourcedefinition.apiextensions.k8s.io/images.caching.internal.knative.dev created[root@centos9 tt]# kubectl apply --filename "https://github.com/knative/serving/releases/download/knative-v$KNATIVE_VERSION/serving-core.yaml"namespace/knative-serving created
clusterrole.rbac.authorization.k8s.io/knative-serving-aggregated-addressable-resolver created
clusterrole.rbac.authorization.k8s.io/knative-serving-addressable-resolver created
clusterrole.rbac.authorization.k8s.io/knative-serving-namespaced-admin created
clusterrole.rbac.authorization.k8s.io/knative-serving-namespaced-edit created
clusterrole.rbac.authorization.k8s.io/knative-serving-namespaced-view created
clusterrole.rbac.authorization.k8s.io/knative-serving-core created
clusterrole.rbac.authorization.k8s.io/knative-serving-podspecable-binding created
serviceaccount/controller created
clusterrole.rbac.authorization.k8s.io/knative-serving-admin created
clusterrolebinding.rbac.authorization.k8s.io/knative-serving-controller-admin created
clusterrolebinding.rbac.authorization.k8s.io/knative-serving-controller-addressable-resolver created
customresourcedefinition.apiextensions.k8s.io/images.caching.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/certificates.networking.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/configurations.serving.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/clusterdomainclaims.networking.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/domainmappings.serving.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/ingresses.networking.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/metrics.autoscaling.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/podautoscalers.autoscaling.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/revisions.serving.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/routes.serving.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/serverlessservices.networking.internal.knative.dev unchanged
customresourcedefinition.apiextensions.k8s.io/services.serving.knative.dev unchanged
secret/serving-certs-ctrl-ca created
secret/knative-serving-certs created
image.caching.internal.knative.dev/queue-proxy created
configmap/config-autoscaler created
configmap/config-defaults created
configmap/config-deployment created
configmap/config-domain created
configmap/config-features created
configmap/config-gc created
configmap/config-leader-election created
configmap/config-logging created
configmap/config-network created
configmap/config-observability created
configmap/config-tracing created
Warning: autoscaling/v2beta2 HorizontalPodAutoscaler is deprecated in v1.23+, unavailable in v1.26+; use autoscaling/v2 HorizontalPodAutoscaler
horizontalpodautoscaler.autoscaling/activator created
poddisruptionbudget.policy/activator-pdb created
deployment.apps/activator created
service/activator-service created
deployment.apps/autoscaler created
service/autoscaler created
deployment.apps/controller created
service/controller created
deployment.apps/domain-mapping created
deployment.apps/domainmapping-webhook created
service/domainmapping-webhook created
horizontalpodautoscaler.autoscaling/webhook created
poddisruptionbudget.policy/webhook-pdb created
deployment.apps/webhook created
service/webhook created
validatingwebhookconfiguration.admissionregistration.k8s.io/config.webhook.serving.knative.dev created
mutatingwebhookconfiguration.admissionregistration.k8s.io/webhook.serving.knative.dev created
mutatingwebhookconfiguration.admissionregistration.k8s.io/webhook.domainmapping.serving.knative.dev created
secret/domainmapping-webhook-certs created
validatingwebhookconfiguration.admissionregistration.k8s.io/validation.webhook.domainmapping.serving.knative.dev created
validatingwebhookconfiguration.admissionregistration.k8s.io/validation.webhook.serving.knative.dev created
secret/webhook-certs created[root@centos9 tt]# kubectl apply --filename "https://github.com/knative/serving/releases/download/knative-v$KNATIVE_VERSION/serving-default-domain.yaml"job.batch/default-domain created
service/default-domain-service createdInstall and configure Kourier
[root@centos9 tt]# kubectl apply --filename https://raw.githubusercontent.com/knative/serving/knative-v$KNATIVE_VERSION/third_party/kourier-latest/kourier.yamlnamespace/kourier-system created
configmap/kourier-bootstrap created
configmap/config-kourier created
serviceaccount/net-kourier created
clusterrole.rbac.authorization.k8s.io/net-kourier created
clusterrolebinding.rbac.authorization.k8s.io/net-kourier created
deployment.apps/net-kourier-controller created
service/net-kourier-controller created
deployment.apps/3scale-kourier-gateway created
service/kourier created
service/kourier-internal created[root@centos9 tt]# kubectl patch configmap/config-network --namespace knative-serving --type merge --patch '{"data":{"ingress.class":"kourier.ingress.networking.knative.dev"}}'configmap/config-network patched检查k3s+knative+kourier pod运行状态
[root@centos9 tt]# kubectl get pod -ANAMESPACE NAME READY STATUS RESTARTS AGE
kube-system local-path-provisioner-7b7dc8d6f5-qxscd 1/1 Running 0 67m
kube-system coredns-b96499967-x277m 1/1 Running 0 67m
kube-system metrics-server-668d979685-k7wl7 1/1 Running 0 67m
knative-serving domain-mapping-6cdd967788-t7nb7 1/1 Running 0 3m52s
knative-serving autoscaler-69c94fb9c7-lhsx9 1/1 Running 0 3m52s
knative-serving webhook-69db94fb79-w966n 1/1 Running 0 3m52s
knative-serving controller-59bb6bbfc-xstvl 1/1 Running 0 3m52s
knative-serving domainmapping-webhook-986ddd5c7-b7q4g 1/1 Running 0 3m52s
knative-serving activator-77df89764b-gnqbw 1/1 Running 0 3m52s
knative-serving default-domain-dpp5x 1/1 Running 0 3m9s
kube-system svclb-kourier-1a1ccd02-lkf4t 2/2 Running 0 2m36s
knative-serving net-kourier-controller-79f5b774c5-zsw4q 1/1 Running 0 2m36s
kourier-system 3scale-kourier-gateway-54f8c78c75-d74g6 1/1 Running 0 2m36s[root@centos9 tt]# kubectl get svc kourier -n kourier-systemNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kourier LoadBalancer 10.43.136.237 192.168.190.130 80:32512/TCP,443:31765/TCP 2m42s制作knative serving helloworld-go 镜像，部署和测试
helloworld-go golang代码
[root@centos9 tt]# git clone https://github.com/knative/docs.git knative-docsCloning into 'knative-docs'...
remote: Enumerating objects: 39528, done.
remote: Counting objects: 100% (30/30), done.
remote: Compressing objects: 100% (29/29), done.
remote: Total 39528 (delta 6), reused 2 (delta 1), pack-reused 39498Receiving objects: 100% (39528/39528), 65.81 MiB | 10.04 MiB/s, done.
Resolving deltas: 100% (25518/25518), done.[root@centos9 tt]# cd knative-docs/code-samples/serving/hello-world/helloworld-go[root@centos9 helloworld-go]# cat helloworld.go package mainimport (
"fmt"
"log"
"net/http"
"os")func handler(w http.ResponseWriter, r *http.Request) {
log.Print("helloworld: received a request")
target := os.Getenv("TARGET")
if target == "" {
target = "World"
}
fmt.Fprintf(w, "Hello %s!\n", target)}func main() {
log.Print("helloworld: starting server...")
http.HandleFunc("/", handler)
port := os.Getenv("PORT")
if port == "" {
port = "8080"
}
log.Printf("helloworld: listening on port %s", port)
log.Fatal(http.ListenAndServe(fmt.Sprintf(":%s", port), nil))}制作镜像并上传docker hub
[root@centos9 helloworld-go]# cat Dockerfile # Use the official Golang image to create a build artifact.# This is based on Debian and sets the GOPATH to /go.FROM golang:1.13 as builder# Create and change to the app directory.WORKDIR /app# Retrieve application dependencies using go modules.# Allows container builds to reuse downloaded dependencies.COPY go.* ./
RUN go mod download# Copy local code to the container image.COPY . ./# Build the binary.# -mod=readonly ensures immutable go.mod and go.sum in container builds.RUN CGO_ENABLED=0 GOOS=linux go build -mod=readonly -v -o server# Use the official Alpine image for a lean production container.# https://hub.docker.com/_/alpine# https://docs.docker.com/develop/develop-images/multistage-build/#use-multi-stage-buildsFROM alpine:3
RUN apk add --no-cache ca-certificates# Copy the binary to the production image from the builder stage.COPY --from=builder /app/server /server# Run the web service on container startup.CMD ["/server"][root@centos9 helloworld-go]# docker build -t docker.io/backendcloud/helloworld-go .Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.[1/2] STEP 1/6: FROM golang:1.13 AS builder
Error: error creating build container: ^C[root@centos9 helloworld-go]# docker build -t backendcloud/helloworld-go .Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.[1/2] STEP 1/6: FROM golang:1.13 AS builder
✔ docker.io/library/golang:1.13
Trying to pull docker.io/library/golang:1.13...
Getting image source signatures
Copying blob 799f41bb59c9 done Copying blob c958d65b3090 done Copying blob 80931cf68816 done Copying blob edaf0a6b092f done Copying blob 813643441356 done Copying blob d6ff36c9ec48 done Copying blob 16b5038bccc8 done Copying config d6f3656320 done Writing manifest to image destination
Storing signatures[1/2] STEP 2/6: WORKDIR /app
--> 828a2d7681c[1/2] STEP 3/6: COPY go.* ./
--> 8d8c9e35cb3[1/2] STEP 4/6: RUN go mod download
--> cd50b410496[1/2] STEP 5/6: COPY . ./
--> 3d4eedb7c9e[1/2] STEP 6/6: RUN CGO_ENABLED=0 GOOS=linux go build -mod=readonly -v -o server
net
vendor/golang.org/x/net/http/httpproxy
crypto/x509
net/textproto
vendor/golang.org/x/net/http/httpguts
crypto/tls
net/http/httptrace
net/http
github.com/knative/docs/code-samples/serving/hello-world/helloworld-go
--> afeac0749bd[2/2] STEP 1/4: FROM alpine:3
Resolved "alpine" as an alias (/etc/containers/registries.conf.d/000-shortnames.conf)Trying to pull docker.io/library/alpine:3...
Getting image source signatures
Copying blob 213ec9aee27d skipped: already exists
Copying config 9c6f072447 done Writing manifest to image destination
Storing signatures[2/2] STEP 2/4: RUN apk add --no-cache ca-certificates
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/community/x86_64/APKINDEX.tar.gz(1/1) Installing ca-certificates (20220614-r0)Executing busybox-1.35.0-r17.trigger
Executing ca-certificates-20220614-r0.trigger
OK: 6 MiB in 15 packages
--> adb2f939cdc[2/2] STEP 3/4: COPY --from=builder /app/server /server
--> 4aa9c1e09b8[2/2] STEP 4/4: CMD ["/server"][2/2] COMMIT backendcloud/helloworld-go
--> e00e007c551
Successfully tagged localhost/backendcloud/helloworld-go:latest
e00e007c551b1090b8f316b6b0f3a45d74c73e9a3d90de59ec15780519e60ae9[root@centos9 helloworld-go]# docker push backendcloud/helloworld-goEmulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Getting image source signatures
Error: trying to reuse blob sha256:994393dc58e7931862558d06e46aa2bb17487044f670f310dffe1d24e4d1eec7 at destination: checking whether a blob sha256:994393dc58e7931862558d06e46aa2bb17487044f670f310dffe1d24e4d1eec7 exists in docker.io/backendcloud/helloworld-go: errors:
denied: requested access to the resource is denied
error parsing HTTP 401 response body: unexpected end of JSON input: ""[root@centos9 helloworld-go]# docker push backendcloud/helloworld-goEmulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Getting image source signatures
Copying blob 91c5703324e6 done Copying blob 3ace8d3a0355 done Copying blob 213ec9aee27d skipped: already exists
Copying config e00e007c55 done WARN[0047] Failed, retrying in 1s ... (1/3). Error: writing blob: Patch "https://registry-1.docker.io/v2/backendcloud/helloworld-go/blobs/uploads/37839a47-df43-4484-b274-9a94ec038784?_state=30VxOFN44VyS0C4KuomnYUMIsohRppkAUPAxy-7VSWB7Ik5hbWUiOiJiYWNrZW5kY2xvdWQvaGVsbG93b3JsZC1nbyIsIlVVSUQiOiIzNzgzOWE0Ny1kZjQzLTQ0ODQtYjI3NC05YTk0ZWMwMzg3ODQiLCJPZmZzZXQiOjAsIlN0YXJ0ZWRBdCI6IjIwMjItMDgtMjVUMDg6MzA6MzguMTQ1NDcxNzgzWiJ9": EOF
Getting image source signatures
Copying blob 779b7f9a0d7e skipped: already exists
Copying blob 105575cd9027 skipped: already exists
Copying blob 213ec9aee27d skipped: already exists
Copying config e00e007c55 done Writing manifest to image destination
Storing signatures部署 helloworld-go 微服务 并 测试
[root@centos9 helloworld-go]# cat service.yaml apiVersion: serving.knative.dev/v1
kind: Service
metadata:
name: helloworld-go
namespace: default
spec:
template:
spec:
containers:
- image: docker.io/backendcloud/helloworld-go
env:
- name: TARGET
value: "Go Sample v1"[root@centos9 helloworld-go]# kubectl apply -f service.yaml service.serving.knative.dev/helloworld-go created[root@centos9 helloworld-go]# kubectl get ksvc helloworld-goNAME URL LATESTCREATED LATESTREADY READY REASON
helloworld-go http://helloworld-go.default.192.168.190.130.sslip.io helloworld-go-00001 helloworld-go-00001 True
[root@centos9 helloworld-go]# kubectl get ksvc helloworld-go --output=custom-columns=NAME:.metadata.name,URL:.status.urlNAME URL
helloworld-go http://helloworld-go.default.192.168.190.130.sslip.io[root@centos9 helloworld-go]# curl http://helloworld-go.default.192.168.190.130.sslip.ioHello Go Sample v1!本文参与 腾讯云自媒体同步曝光计划，分享自微信公众号。
原始发表：2022-08-26，如有侵权请联系 cloudcommunity@tencent.com 删除
评论
登录后参与评论
推荐阅读
目录
腾讯云开发者
