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kubebuilder实战之八：知识点小记
本篇概览
- 作为《kubebuilder实战》系列的第六篇，前面已完成了编码，现在到了验证功能的环节，请确保您的docker和kubernetes环境正常，然后咱们一起完成以下操作：
- 部署CRD
- 本地运行Controller
- 通过yaml文件新建elasticweb资源对象
- 通过日志和kubectl命令验证elasticweb功能是否正常
- 浏览器访问web，验证业务服务是否正常
- 修改singlePodQPS，看elasticweb是否自动调整pod数量
- 修改totalQPS，看elasticweb是否自动调整pod数
- 删除elasticweb，看相关的service和deployment被自动删除
- 构建Controller镜像，在kubernetes运行此Controller，验证上述功能是否正常
- 看似简单的部署验证操作，零零散散加起来居然有这么多...好吧不感慨了，立即开始吧；
部署CRD
- 从控制台进入Makefile所在目录，执行命令make install，即可将CRD部署到kubernetes：
zhaoqin@zhaoqindeMBP-2 elasticweb % make install
/Users/zhaoqin/go/bin/controller-gen "crd:trivialVersions=true" rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
kustomize build config/crd | kubectl apply -f -
Warning: apiextensions.k8s.io/v1beta1 CustomResourceDefinition is deprecated in v1.16+, unavailable in v1.22+; use apiextensions.k8s.io/v1 CustomResourceDefinition
customresourcedefinition.apiextensions.k8s.io/elasticwebs.elasticweb.com.bolingcavalry configured
-
从上述内容可见，实际上执行的操作是用kustomize将config/crd下的yaml资源合并后在kubernetes进行创建；
-
可以用命令kubectl api-versions验证CRD部署是否成功：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl api-versions|grep elasticweb
elasticweb.com.bolingcavalry/v1
本地运行Controller
- 先尝试用最简单的方式来验证Controller的功能，如下图，Macbook电脑是我的开发环境，直接用elasticweb工程中的Makefile，可以将Controller的代码在本地运行起来里面：
- 进入Makefile文件所在目录，执行命令make run即可编译运行controller：
zhaoqin@zhaoqindeMBP-2 elasticweb % pwd
/Users/zhaoqin/github/blog_demos/kubebuilder/elasticweb
zhaoqin@zhaoqindeMBP-2 elasticweb % make run
/Users/zhaoqin/go/bin/controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./..."
go fmt ./...
go vet ./...
/Users/zhaoqin/go/bin/controller-gen "crd:trivialVersions=true" rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
go run ./main.go
2021-02-20T20:46:16.774+0800 INFO controller-runtime.metrics metrics server is starting to listen {"addr": ":8080"}
2021-02-20T20:46:16.774+0800 INFO setup starting manager
2021-02-20T20:46:16.775+0800 INFO controller-runtime.controller Starting EventSource {"controller": "elasticweb", "source": "kind source: /, Kind="}
2021-02-20T20:46:16.776+0800 INFO controller-runtime.manager starting metrics server {"path": "/metrics"}
2021-02-20T20:46:16.881+0800 INFO controller-runtime.controller Starting Controller {"controller": "elasticweb"}
2021-02-20T20:46:16.881+0800 INFO controller-runtime.controller Starting workers {"controller": "elasticweb", "worker count": 1}
新建elasticweb资源对象
-
负责处理elasticweb的Controller已经运行起来了，接下来就开始创建elasticweb资源对象吧，用yaml文件来创建；
-
在config/samples目录下，kubebuilder为咱们创建了demo文件elasticweb_v1_elasticweb.yaml，不过这里面spec的内容不是咱们定义的那四个字段，需要改成以下内容：
apiVersion: v1
kind: Namespace
metadata:
name: dev
labels:
name: dev
---
apiVersion: elasticweb.com.bolingcavalry/v1
kind: ElasticWeb
metadata:
namespace: dev
name: elasticweb-sample
spec:
# Add fields here
image: tomcat:8.0.18-jre8
port: 30003
singlePodQPS: 500
totalQPS: 600
- 对上述配置的几个参数做如下说明：
- 使用的namespace为dev
- 本次测试部署的应用为tomcat
- service使用宿主机的30003端口暴露tomcat的服务
- 假设单个pod能支撑500QPS，外部请求的QPS为600
- 执行命令kubectl apply -f config/samples/elasticweb_v1_elasticweb.yaml，即可在kubernetes创建elasticweb实例：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl apply -f config/samples/elasticweb_v1_elasticweb.yaml
namespace/dev created
elasticweb.elasticweb.com.bolingcavalry/elasticweb-sample created
- 去controller的窗口发现打印了不少日志，通过分析日志发现Reconcile方法执行了两次，第一执行时创建了deployment和service等资源：
2021-02-21T10:03:57.108+0800 INFO controllers.ElasticWeb 1. start reconcile logic {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.108+0800 INFO controllers.ElasticWeb 3. instance : Image [tomcat:8.0.18-jre8], Port [30003], SinglePodQPS [500], TotalQPS [600], RealQPS [nil] {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.210+0800 INFO controllers.ElasticWeb 4. deployment not exists {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.313+0800 INFO controllers.ElasticWeb set reference {"func": "createService"}
2021-02-21T10:03:57.313+0800 INFO controllers.ElasticWeb start create service {"func": "createService"}
2021-02-21T10:03:57.364+0800 INFO controllers.ElasticWeb create service success {"func": "createService"}
2021-02-21T10:03:57.365+0800 INFO controllers.ElasticWeb expectReplicas [2] {"func": "createDeployment"}
2021-02-21T10:03:57.365+0800 INFO controllers.ElasticWeb set reference {"func": "createDeployment"}
2021-02-21T10:03:57.365+0800 INFO controllers.ElasticWeb start create deployment {"func": "createDeployment"}
2021-02-21T10:03:57.382+0800 INFO controllers.ElasticWeb create deployment success {"func": "createDeployment"}
2021-02-21T10:03:57.382+0800 INFO controllers.ElasticWeb singlePodQPS [500], replicas [2], realQPS[1000] {"func": "updateStatus"}
2021-02-21T10:03:57.407+0800 DEBUG controller-runtime.controller Successfully Reconciled {"controller": "elasticweb", "request": "dev/elasticweb-sample"}
2021-02-21T10:03:57.407+0800 INFO controllers.ElasticWeb 1. start reconcile logic {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.407+0800 INFO controllers.ElasticWeb 3. instance : Image [tomcat:8.0.18-jre8], Port [30003], SinglePodQPS [500], TotalQPS [600], RealQPS [1000] {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.407+0800 INFO controllers.ElasticWeb 9. expectReplicas [2], realReplicas [2] {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.407+0800 INFO controllers.ElasticWeb 10. return now {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T10:03:57.407+0800 DEBUG controller-runtime.controller Successfully Reconciled {"controller": "elasticweb", "request": "dev/elasticweb-sample"}
- 再用kubectl get命令详细检查资源对象，一切符合预期，elasticweb、service、deployment、pod都是正常的：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl apply -f config/samples/elasticweb_v1_elasticweb.yaml
namespace/dev created
elasticweb.elasticweb.com.bolingcavalry/elasticweb-sample created
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get elasticweb -n dev
NAME AGE
elasticweb-sample 35s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get service -n dev
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
elasticweb-sample NodePort 10.107.177.158 <none> 8080:30003/TCP 41s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get deployment -n dev
NAME READY UP-TO-DATE AVAILABLE AGE
elasticweb-sample 2/2 2 2 46s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
NAME READY STATUS RESTARTS AGE
elasticweb-sample-56fc5848b7-l5thk 1/1 Running 0 50s
elasticweb-sample-56fc5848b7-lqjk5 1/1 Running 0 50s
浏览器验证业务功能
- 本次部署操作使用的docker镜像是tomcat，验证起来非常简单，打开默认页面能见到猫就证明tomcat启动成功了，我这kubernetes宿主机的IP地址是192.168.50.75，于是用浏览器访问http://192.168.50.75:30003，如下图，业务功能正常：
修改单个Pod的QPS
-
如果自身优化，或者外界依赖变化(如缓存、数据库扩容)，这些都可能导致当前服务的QPS提升，假设单个Pod的QPS从500提升到了800，看看咱们的Operator能不能自动做出调整（总QPS是600，因此pod数应该从2降到1）
-
在config/samples/目录下新增名为update_single_pod_qps.yaml的文件，内容如下：
spec:
singlePodQPS: 800
- 执行以下命令，即可将单个Pod的QPS从500更新为800（注意，参数type很重要别漏了）：
kubectl patch elasticweb elasticweb-sample \
-n dev \
--type merge \
--patch "$(cat config/samples/update_single_pod_qps.yaml)"
- 此时去看controller日志，如下图，红框1表示spec已经更新，红框2则表示用最新的参数计算出来的pod数量，符合预期：
- 用kubectl get命令检查pod，可见已经降到1个了：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
NAME READY STATUS RESTARTS AGE
elasticweb-sample-56fc5848b7-l5thk 1/1 Running 0 30m
- 记得用浏览器检查tomcat是否正常；
修改总QPS
-
外部QPS也在频繁变化中，咱们的operator也需要根据总QPS及时调节pod实例，以确保整体服务质量，接下来咱们就修改总QPS，看operator是否生效：
-
在config/samples/目录下新增名为update_total_qps.yaml的文件，内容如下：
spec:
totalQPS: 2600
- 执行以下命令，即可将总QPS从600更新为2600（注意，参数type很重要别漏了）：
kubectl patch elasticweb elasticweb-sample \
-n dev \
--type merge \
--patch "$(cat config/samples/update_total_qps.yaml)"
- 此时去看controller日志，如下图，红框1表示spec已经更新，红框2则表示用最新的参数计算出来的pod数量，符合预期：
- 用kubectl get命令检查pod，可见已经增长到4个，4个pd的能支撑的QPS为3200，满足了当前2600的要求：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
NAME READY STATUS RESTARTS AGE
elasticweb-sample-56fc5848b7-8n7tq 1/1 Running 0 8m22s
elasticweb-sample-56fc5848b7-f2lpb 1/1 Running 0 8m22s
elasticweb-sample-56fc5848b7-l5thk 1/1 Running 0 48m
elasticweb-sample-56fc5848b7-q8p5f 1/1 Running 0 8m22s
- 记得用浏览器检查tomcat是否正常；
- 聪明的您一定会觉得用这个方法来调节pod数太low了，呃...您说得没错确实low，但您可以自己开发一个应用，收到当前QPS后自动调用client-go去修改elasticweb的totalQPS，让operator及时调整pod数，这也勉强算自动调节了......吧
删除验证
- 目前整个dev这个namespace下有service、deployment、pod、elasticweb这些资源对象，如果要全部删除，只需删除elasticweb即可，因为service和deployment都和elasticweb建立的关联关系，代码如下图红框：
- 执行删除elasticweb的命令：
kubectl delete elasticweb elasticweb-sample -n dev
- 再去查看其他资源，都被自动删除了：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl delete elasticweb elasticweb-sample -n dev
elasticweb.elasticweb.com.bolingcavalry "elasticweb-sample" deleted
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
NAME READY STATUS RESTARTS AGE
elasticweb-sample-56fc5848b7-9lcww 1/1 Terminating 0 45s
elasticweb-sample-56fc5848b7-n7p7f 1/1 Terminating 0 45s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
NAME READY STATUS RESTARTS AGE
elasticweb-sample-56fc5848b7-n7p7f 0/1 Terminating 0 73s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
No resources found in dev namespace.
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get deployment -n dev
No resources found in dev namespace.
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get service -n dev
No resources found in dev namespace.
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get namespace dev
NAME STATUS AGE
dev Active 97s
构建镜像
- 前面咱们在开发环境将controller运行起来尝试了所有功能，在实际生产环境中，controller并非这样独立于kubernetes之外，而是以pod的状态运行在kubernetes之中，接下来咱们尝试将controller代码编译构建成docker镜像，再在kubernetes上运行起来；
- 要做的第一件事，就是在前面的controller控制台上执行Ctrl+C，把那个controller停掉；
- 这里有个要求，就是您要有个kubernetes可以访问的镜像仓库，例如局域网内的Harbor，或者公共的hub.docker.com，我这为了操作方便选择了hub.docker.com，使用它的前提是拥有hub.docker.com的注册帐号；
- 在kubebuilder电脑上，打开一个控制台，执行docker login命令登录，根据提示输入hub.docker.com的帐号和密码，这样就可以在当前控制台上执行docker push命令将镜像推送到hub.docker.com上了（这个网站的网络很差，可能要登录好几次才能成功）；
- 执行以下命令构建docker镜像并推送到hub.docker.com，镜像名为bolingcavalry/elasticweb:002：
make docker-build docker-push IMG=bolingcavalry/elasticweb:002
- hub.docker.com的网络状况不是一般的差，kubebuilder电脑上的docker一定要设置镜像加速，上述命令如果遭遇超时失败，请重试几次，此外，构建过程中还会下载诸多go模块的依赖，也需要您耐心等待，也很容易遇到网络问题，需要多次重试，所以，最好是使用局域网内搭建的Habor服务；
- 最终，命令执行成功后输出如下：
zhaoqin@zhaoqindeMBP-2 elasticweb % make docker-build docker-push IMG=bolingcavalry/elasticweb:002
/Users/zhaoqin/go/bin/controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./..."
go fmt ./...
go vet ./...
/Users/zhaoqin/go/bin/controller-gen "crd:trivialVersions=true" rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
go test ./... -coverprofile cover.out
? elasticweb [no test files]
? elasticweb/api/v1 [no test files]
ok elasticweb/controllers 8.287s coverage: 0.0% of statements
docker build . -t bolingcavalry/elasticweb:002
[+] Building 146.8s (17/17) FINISHED
=> [internal] load build definition from Dockerfile 0.1s
=> => transferring dockerfile: 37B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for gcr.io/distroless/static:nonroot 1.8s
=> [internal] load metadata for docker.io/library/golang:1.13 0.7s
=> [builder 1/9] FROM docker.io/library/golang:1.13@sha256:8ebb6d5a48deef738381b56b1d4cd33d99a5d608e0d03c5fe8dfa3f68d41a1f8 0.0s
=> [stage-1 1/3] FROM gcr.io/distroless/static:nonroot@sha256:b89b98ea1f5bc6e0b48c8be6803a155b2a3532ac6f1e9508a8bcbf99885a9152 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 14.51kB 0.0s
=> CACHED [builder 2/9] WORKDIR /workspace 0.0s
=> CACHED [builder 3/9] COPY go.mod go.mod 0.0s
=> CACHED [builder 4/9] COPY go.sum go.sum 0.0s
=> CACHED [builder 5/9] RUN go mod download 0.0s
=> CACHED [builder 6/9] COPY main.go main.go 0.0s
=> CACHED [builder 7/9] COPY api/ api/ 0.0s
=> [builder 8/9] COPY controllers/ controllers/ 0.1s
=> [builder 9/9] RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go 144.5s
=> CACHED [stage-1 2/3] COPY --from=builder /workspace/manager . 0.0s
=> exporting to image 0.0s
=> => exporting layers 0.0s
=> => writing image sha256:622d30aa44c77d93db4093b005fce86b39d5ba5c6cd29f1fb2accb7e7f9b23b8 0.0s
=> => naming to docker.io/bolingcavalry/elasticweb:002 0.0s
docker push bolingcavalry/elasticweb:002
The push refers to repository [docker.io/bolingcavalry/elasticweb]
eea77d209b68: Layer already exists
8651333b21e7: Layer already exists
002: digest: sha256:c09ab87f6fce3d85f1fda0ffe75ead9db302a47729aefd3ef07967f2b99273c5 size: 739
- 去hub.docker.com网站看看，如下图，新镜像已经上传，这样只要任何机器只要能上网就能pull此镜像到本地使用了：
- 镜像准备好之后，执行以下命令即可在kubernetes环境部署controller：
make deploy IMG=bolingcavalry/elasticweb:002
- 接下来像之前那样创建elasticweb资源对象，验证所有资源是否创建成功：
zhaoqin@zhaoqindeMBP-2 elasticweb % make deploy IMG=bolingcavalry/elasticweb:002
/Users/zhaoqin/go/bin/controller-gen "crd:trivialVersions=true" rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
cd config/manager && kustomize edit set image controller=bolingcavalry/elasticweb:002
kustomize build config/default | kubectl apply -f -
namespace/elasticweb-system created
Warning: apiextensions.k8s.io/v1beta1 CustomResourceDefinition is deprecated in v1.16+, unavailable in v1.22+; use apiextensions.k8s.io/v1 CustomResourceDefinition
customresourcedefinition.apiextensions.k8s.io/elasticwebs.elasticweb.com.bolingcavalry configured
role.rbac.authorization.k8s.io/elasticweb-leader-election-role created
clusterrole.rbac.authorization.k8s.io/elasticweb-manager-role created
clusterrole.rbac.authorization.k8s.io/elasticweb-proxy-role created
Warning: rbac.authorization.k8s.io/v1beta1 ClusterRole is deprecated in v1.17+, unavailable in v1.22+; use rbac.authorization.k8s.io/v1 ClusterRole
clusterrole.rbac.authorization.k8s.io/elasticweb-metrics-reader created
rolebinding.rbac.authorization.k8s.io/elasticweb-leader-election-rolebinding created
clusterrolebinding.rbac.authorization.k8s.io/elasticweb-manager-rolebinding created
clusterrolebinding.rbac.authorization.k8s.io/elasticweb-proxy-rolebinding created
service/elasticweb-controller-manager-metrics-service created
deployment.apps/elasticweb-controller-manager created
zhaoqin@zhaoqindeMBP-2 elasticweb %
zhaoqin@zhaoqindeMBP-2 elasticweb %
zhaoqin@zhaoqindeMBP-2 elasticweb %
zhaoqin@zhaoqindeMBP-2 elasticweb %
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl apply -f config/samples/elasticweb_v1_elasticweb.yaml
namespace/dev created
elasticweb.elasticweb.com.bolingcavalry/elasticweb-sample created
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get service -n dev
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
elasticweb-sample NodePort 10.96.234.7 <none> 8080:30003/TCP 13s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get deployment -n dev
NAME READY UP-TO-DATE AVAILABLE AGE
elasticweb-sample 2/2 2 2 18s
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pod -n dev
NAME READY STATUS RESTARTS AGE
elasticweb-sample-56fc5848b7-559lw 1/1 Running 0 22s
elasticweb-sample-56fc5848b7-hp4wv 1/1 Running 0 22s
- 这还不够！还有个重要的信息需要咱们检查---controller的日志，先看有哪些pod：
zhaoqin@zhaoqindeMBP-2 elasticweb % kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
dev elasticweb-sample-56fc5848b7-559lw 1/1 Running 0 68s
dev elasticweb-sample-56fc5848b7-hp4wv 1/1 Running 0 68s
elasticweb-system elasticweb-controller-manager-5795d4d98d-t6jvc 2/2 Running 0 98s
kube-system coredns-7f89b7bc75-5pdwc 1/1 Running 15 20d
kube-system coredns-7f89b7bc75-nvbvm 1/1 Running 15 20d
kube-system etcd-hedy 1/1 Running 15 20d
kube-system kube-apiserver-hedy 1/1 Running 15 20d
kube-system kube-controller-manager-hedy 1/1 Running 16 20d
kube-system kube-flannel-ds-v84vc 1/1 Running 22 20d
kube-system kube-proxy-hlppx 1/1 Running 15 20d
kube-system kube-scheduler-hedy 1/1 Running 16 20d
test-clientset client-test-deployment-7677cc9669-kd7l7 1/1 Running 9 9d
test-clientset client-test-deployment-7677cc9669-kt5rv 1/1 Running 9 9d
- 可见controller的pod名称为elasticweb-controller-manager-5795d4d98d-t6jvc，执行以下命令可以查看日志，多了-c manager参数是因为这个pod里面有两个容器，需要指定正确的容器才能看到日志：
kubectl logs -f \
elasticweb-controller-manager-5795d4d98d-t6jvc \
-c manager \
-n elasticweb-system
- 再次看到了熟悉的业务日志：
2021-02-21T08:52:27.064Z INFO controllers.ElasticWeb 1. start reconcile logic {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.064Z INFO controllers.ElasticWeb 3. instance : Image [tomcat:8.0.18-jre8], Port [30003], SinglePodQPS [500], TotalQPS [600], RealQPS [nil] {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.064Z INFO controllers.ElasticWeb 4. deployment not exists {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.064Z INFO controllers.ElasticWeb set reference {"func": "createService"}
2021-02-21T08:52:27.064Z INFO controllers.ElasticWeb start create service {"func": "createService"}
2021-02-21T08:52:27.107Z INFO controllers.ElasticWeb create service success {"func": "createService"}
2021-02-21T08:52:27.107Z INFO controllers.ElasticWeb expectReplicas [2] {"func": "createDeployment"}
2021-02-21T08:52:27.107Z INFO controllers.ElasticWeb set reference {"func": "createDeployment"}
2021-02-21T08:52:27.107Z INFO controllers.ElasticWeb start create deployment {"func": "createDeployment"}
2021-02-21T08:52:27.119Z INFO controllers.ElasticWeb create deployment success {"func": "createDeployment"}
2021-02-21T08:52:27.119Z INFO controllers.ElasticWeb singlePodQPS [500], replicas [2], realQPS[1000] {"func": "updateStatus"}
2021-02-21T08:52:27.198Z DEBUG controller-runtime.controller Successfully Reconciled {"controller": "elasticweb", "request": "dev/elasticweb-sample"}
2021-02-21T08:52:27.198Z INFO controllers.ElasticWeb 1. start reconcile logic {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.198Z INFO controllers.ElasticWeb 3. instance : Image [tomcat:8.0.18-jre8], Port [30003], SinglePodQPS [500], TotalQPS [600], RealQPS [1000] {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.198Z INFO controllers.ElasticWeb 9. expectReplicas [2], realReplicas [2] {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.198Z INFO controllers.ElasticWeb 10. return now {"elasticweb": "dev/elasticweb-sample"}
2021-02-21T08:52:27.198Z DEBUG controller-runtime.controller Successfully Reconciled {"controller": "elasticweb", "request": "dev/elasticweb-sample"}
- 再用浏览器验证tomcat已经启动成功；
卸载和清理
- 体验完毕后，如果想把前面创建的资源全部清理掉(注意，是清理资源，不是资源对象)，可以执行以下命令：
make uninstall
- 至此，整个operator的设计、开发、部署、验证流程就全部完成了，在您的operator开发过程中，希望本文能给您带来一些参考；
出处：https://www.cnblogs.com/bolingcavalry/p/15208633.html
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