本文结束了作者关于 OpenWhisk 的翻译笔记系列
在 Kubernetes 上部署 OpenWhisk
在几天的时间里,我尝试将 OpenWhisk 部署到 Kubernetes,以创建一个简单而快速的测试场。 而且由于我是 Kubernetes 的新手,我相信花了一天半的时间就成功部署了。 在
- 安装包管理器
asdf
,之后我们自动更正~/.bash_profile
或其等价物如下:
$ brew install asdf
$ [ -s "/usr/local/opt/asdf/asdf.sh" ] && . /usr/local/opt/asdf/asdf.sh
$ source ~/.bash_profile
[在 Linux 上,尽管可以使用brew,但不需要此步骤。 — 大约。 译者]
- 添加插件
minikube
иkubelet
:
$ asdf plugin-add kubectl
$ asdf plugin-add minikube
[同样,在 Linux 上跳过此步骤。 — 大约。 译者]
- 安装 minikube 和 kubelet:
$ asdf install kubectl 1.9.0
$ asdf global kubectl 1.9.0
$ asdf install minikube 0.25.2
$ asdf global minikube 0.25.2
[安装了特定版本,但我检查了 Linux 最新可用版本的所有内容; 我怀疑您可以安全地安装最新版本。 — 大约。 译者]
在 Linux 上,这一步是这样完成的(所有内容都放在 ~/bin 中,它列在我的 PATH 中,译者注):
$ curl -L0 minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube && mv minikube ~/bin/
$ curl -L0 https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x kubectl && mv kubectl ~/bin/
- 创建minikube虚拟机(必须预装VirtualBox):
$ minikube start --cpus 2 --memory 4096 --kubernetes-version=v1.9.0 --extra-config=apiserver.Authorization.Mode=RBAC
[和团队一起一切都对我有利 minikube start
,不带参数且具有默认值。 — 大约。 译者]
$ minikube start
minikube v1.5.2 on Debian 8.11
Automatically selected the 'virtualbox' driver
Downloading VM boot image ...
> minikube-v1.5.1.iso.sha256: 65 B / 65 B [--------------] 100.00% ? p/s 0s
> minikube-v1.5.1.iso: 143.76 MiB / 143.76 MiB [-] 100.00% 5.63 MiB p/s 26s
Creating virtualbox VM (CPUs=2, Memory=4096MB, Disk=20000MB) ...
Preparing Kubernetes v1.16.2 on Docker '18.09.9' ...
Downloading kubelet v1.16.2
Downloading kubeadm v1.16.2
Pulling images ...
Launching Kubernetes ... Waiting for: apiserver
Done! kubectl is now configured to use "minikube"
- 将 Docker 中的网络切换为混杂模式:
$ minikube ssh -- sudo ip link set docker0 promisc on
- 创建命名空间并标记工作节点:
$ kubectl create namespace openwhisk
$ kubectl label nodes --all openwhisk-role=invoker
- 我们获取存储库的内容并覆盖 mycluster.yaml 文件中的入口类型:
$ git clone https://github.com/apache/incubator-openwhisk-deploy-kube.git
$ cd incubator-openwhisk-deploy-kube/
$ cat << "EOF" > mycluster.yaml
whisk:
ingress:
type: NodePort
api_host_name: 192.168.99.100
api_host_port: 31001
nginx:
httpsNodePort: 31001
EOF
- 安装 Helm 并使用它进行部署:
$ brew install kubernetes-helm
$ helm init # init Helm Tiller, не нужно на Helm v3+
$ kubectl get pods -n kube-system # verify that tiller-deploy is in the running state, не нужно на helm v3+
$ kubectl create clusterrolebinding tiller-cluster-admin --clusterrole=cluster-admin --serviceaccount=kube-system:default
$ helm install ./openwhisk/helm/ --namespace=openwhisk -f mycluster.yaml
[在最新版本的 Linux 上(v3.0.1 可用),情况会略有不同。 — 大约。 译者]
$ curl -L0 https://get.helm.sh/helm-v3.0.1-linux-amd64.tar.gz | tar -xzvf - linux-amd64/helm --strip-components=1; sudo mv helm /usr/local/bin
$ kubectl create clusterrolebinding tiller-cluster-admin --clusterrole=cluster-admin --serviceaccount=kube-system:default
$ helm install ./openwhisk/helm/ --namespace=openwhisk --generate-name -f mycluster.yaml
- 我们检查一切是否已上升(状态 = 正在运行或已完成):
$ kubectl get pods -n openwhisk
NAME READY STATUS RESTARTS AGE
openwhisk-1576070780-alarmprovider-6868dc694-plvpf 1/1 Running 1 1d5h
openwhisk-1576070780-apigateway-8d56f4979-825hf 1/1 Running 1 1d5h
openwhisk-1576070780-cloudantprovider-544bb46596-9scph 1/1 Running 1 1d5h
openwhisk-1576070780-controller-0 1/1 Running 2 1d5h
openwhisk-1576070780-couchdb-7fd7f6c7cc-42tw6 1/1 Running 1 1d5h
openwhisk-1576070780-gen-certs-z9nsb 0/1 Completed 0 1d5h
openwhisk-1576070780-init-couchdb-r2vmt 0/1 Completed 0 1d5h
openwhisk-1576070780-install-packages-27dtr 0/1 Completed 0 1d4h
openwhisk-1576070780-invoker-0 1/1 Running 1 1d5h
openwhisk-1576070780-kafka-0 1/1 Running 1 1d5h
openwhisk-1576070780-kafkaprovider-f8b4cf4fc-7z4gt 1/1 Running 1 1d5h
openwhisk-1576070780-nginx-6dbdbf69bc-5x76n 1/1 Running 1 1d5h
openwhisk-1576070780-redis-cfd8756f4-hkrt6 1/1 Running 1 1d5h
openwhisk-1576070780-wskadmin 1/1 Running 1 1d5h
openwhisk-1576070780-zookeeper-0 1/1 Running 1 1d5h
wskopenwhisk-1576070780-invoker-00-1-prewarm-nodejs10 1/1 Running 0 61s
wskopenwhisk-1576070780-invoker-00-2-prewarm-nodejs10 1/1 Running 0 61s
wskopenwhisk-1576070780-invoker-00-3-whisksystem-invokerhealtht 1/1 Running 0 59s
- 配置 wsk 使其工作:
$ wsk property set --apihost 192.168.99.100:31001
$ wsk property set --auth 23bc46b1-71f6-4ed5-8c54-816aa4f8c502:123zO3xZCLrMN6v2BKK1dXYFpXlPkccOFqm12CdAsMgRU4VrNZ9lyGVCGuMDGIwP
检查:
$ wsk -i list
Entities in namespace: default
packages
actions
triggers
rules
问题和解决方案
getsockopt:连接被拒绝
$ wsk -i list
error: Unable to obtain the list of entities for namespace 'default': Get http://192.168.99.100:31001/api/v1/namespaces/_/actions?limit=0&skip=0: dial tcp 192.168.99.100:31001: getsockopt: connection refused
检查容器是否在命名空间中 openwhisk
状态中 Running
, 因为有时它会因错误而崩溃 CreateContainerConfigError
.
调用者仍在初始化 — Init:1/2
下载各种运行时环境的过程可能需要很长时间。 为了加快速度,您可以在文件中指定缩短的最小列表 mycluster.yaml
:
whisk:
runtimes: "runtimes-minimal-travis.json"
带有名称的容器 -安装包- 崩溃到错误
只需增加活性测试的超时时间即可。
通过 Knative 安装 OpenWhisk
Priti Desai 使用 Knative Build 和 BuildTemplates 在 IBM 云中的集群以及常规 minikube 上进行了安装。 我还将根据如何安装在 minukube 之上
$ curl -L0 https://github.com/solo-io/gloo/releases/download/v1.2.10/glooctl-linux-amd64; chmod +x glooctl-linux-amd64; mv glooctl-linux-amd64 ~/bin
$ glooctl install knative
$ kubectl get pods -n knative-serving
NAME READY STATUS RESTARTS AGE
activator-77fc555665-rvrst 1/1 Running 0 2m23s
autoscaler-5c98b7c9b6-x8hh4 1/1 Running 0 2m21s
autoscaler-hpa-5cfd4f6845-w87kq 1/1 Running 0 2m22s
controller-7fd74c8f67-tprm8 1/1 Running 0 2m19s
webhook-74847bb77c-txr2g 1/1 Running 0 2m17s
$ kubectl get pods -n gloo-system
NAME READY STATUS RESTARTS AGE
discovery-859d7fbc9c-8xhvh 1/1 Running 0 51s
gloo-545886d9c6-85mwt 1/1 Running 0 51s
ingress-67d4996d75-lkkmw 1/1 Running 0 50s
knative-external-proxy-767dfd656c-wwv2z 1/1 Running 0 50s
knative-internal-proxy-6fdddcc6b5-7vqd8 1/1 Running 0 51s
在 Knative 之上构建和运行 OpenWhisk
- 获取内容
这个存储库 :
$ git clone https://github.com/tektoncd/catalog/
$ cd catalog/openwhisk
- 我们将访问注册表的数据设置为环境变量,并将它们保存为 Kubernetes 机密:
$ export DOCKER_USERNAME=<your docker hub username>
$ export DOCKER_PASSWORD=<your docker hub password>
$ sed -e 's/${DOCKER_USERNAME}/'"$DOCKER_USERNAME"'/' -e 's/${DOCKER_PASSWORD}/'"$DOCKER_PASSWORD"'/' docker-secret.yaml.tmpl > docker-secret.yaml
$ kubectl apply -f docker-secret.yaml
检查:
$ kubectl get secret
NAME TYPE DATA AGE
dockerhub-user-pass kubernetes.io/basic-auth 2 21s
- 创建一个用于构建环境的帐户:
$ kubectl apply -f service-account.yaml
检查:
$ kubectl get serviceaccount/openwhisk-runtime-builder
NAME SECRETS AGE
openwhisk-runtime-builder 2 31m
- 创建任务来构建 OpenWhisk 的映像
$ kubectl apply -f openwhisk.yaml
task.tekton.dev/openwhisk created
- 我们运行任务来构建镜像(以 NodeJS 为例):
创建一个包含以下内容的 taskrun.yaml 文件:
# Git Pipeline Resource for OpenWhisk NodeJS Runtime
apiVersion: tekton.dev/v1alpha1
kind: PipelineResource
metadata:
name: openwhisk-nodejs-runtime-git
spec:
type: git
params:
- name: revision
value: master
- name: url
value: https://github.com/apache/openwhisk-runtime-nodejs.git
---
# Image Pipeline Resource for OpenWhisk NodeJS Sample Application
apiVersion: tekton.dev/v1alpha1
kind: PipelineResource
metadata:
name: openwhisk-nodejs-helloworld-image
spec:
type: image
params:
- name: url
value: docker.io/${DOCKER_USERNAME}/openwhisk-nodejs-helloworld
---
# Task Run to build NodeJS image with the action source
apiVersion: tekton.dev/v1alpha1
kind: TaskRun
metadata:
name: openwhisk-nodejs-helloworld
spec:
serviceAccountName: openwhisk-runtime-builder
taskRef:
name: openwhisk
inputs:
resources:
- name: runtime-git
resourceRef:
name: openwhisk-nodejs-runtime-git
params:
- name: DOCKERFILE
value: "./runtime-git/core/nodejs10Action/knative/Dockerfile"
- name: OW_ACTION_NAME
value: "nodejs-helloworld"
- name: OW_ACTION_CODE
value: "function main() {return {payload: 'Hello World!'};}"
- name: OW_PROJECT_URL
value: ""
outputs:
resources:
- name: runtime-image
resourceRef:
name: openwhisk-nodejs-helloworld-image
---
我们为此文件应用当前数据:
$ sed 's/${DOCKER_USERNAME}/'"$DOCKER_USERNAME"'/' -i taskrun.yaml
我们申请:
$ kubectl apply -f taskrun.yaml
pipelineresource.tekton.dev/openwhisk-nodejs-runtime-git created
pipelineresource.tekton.dev/openwhisk-nodejs-helloworld-image created
taskrun.tekton.dev/openwhisk-nodejs-helloworld created
检查工作包括获取 pod 的名称并查看其状态。 还可以查看每一步的执行日志,例如:
$ kubectl get taskrun
NAME SUCCEEDED REASON STARTTIME COMPLETIONTIME
openwhisk-nodejs-helloworld True Succeeded 5m15s 44s
$ kubectl get pod openwhisk-nodejs-helloworld-pod-4640d3
NAME READY STATUS RESTARTS AGE
openwhisk-nodejs-helloworld-pod-4640d3 0/6 Completed 0 5m20s
$ kubectl logs openwhisk-nodejs-helloworld-pod-4640d3 -c step-git-source-openwhisk-nodejs-runtime-git-r8vhr
{"level":"info","ts":1576532931.5880227,"logger":"fallback-logger","caller":"logging/config.go:69","msg":"Fetch GitHub commit ID from kodata failed: open /var/run/ko/refs/heads/master: no such file or directory"}
{"level":"info","ts":1576532936.538926,"logger":"fallback-logger","caller":"git/git.go:81","msg":"Successfully cloned https://github.com/apache/openwhisk-runtime-nodejs.git @ master in path /workspace/runtime-git"}
{"level":"warn","ts":1576532936.5395331,"logger":"fallback-logger","caller":"git/git.go:128","msg":"Unexpected error: creating symlink: symlink /tekton/home/.ssh /root/.ssh: file exists"}
{"level":"info","ts":1576532936.8202565,"logger":"fallback-logger","caller":"git/git.go:109","msg":"Successfully initialized and updated submodules in path /workspace/runtime-git"}
执行后,我们将在注册表中拥有一个可以使用 kn 实用程序部署的映像,该实用程序旨在与 Knative 服务配合使用,例如:
kn service create nodejs-helloworld --image docker.io/${DOCKER_USERNAME}/openwhisk-nodejs-helloworld
Service 'nodejs-helloworld' successfully created in namespace 'default'.
Waiting for service 'nodejs-helloworld' to become ready ... OK
Service URL:
http://nodejs-helloworld.default.example.com
如果你使用 Gloo,你可以像这样检查它的功能:
$ curl -H "Host: nodejs-helloworld.default.example.com" -X POST $(glooctl proxy url --name knative-external-proxy)
{"OK":true}
$ curl -H "Host: nodejs-helloworld.default.example.com" -X POST $(glooctl proxy url --name knative-external-proxy)
{"payload":"Hello World!"}
该系列的其他文章
来源: habr.com