이 단계에 문제가 있거나 점진적 출시를 수행하려면 100%에 도달할 때까지 이 마이그레이션 스크립트 명령어를 여러 번 다시 실행할 수 있습니다.
예를 들어 트래픽의 10%를 마이그레이션하도록 선택한 경우 프로세스 중 터미널 출력이 다음과 유사하게 표시됩니다.
In this step, 10% of traffic from the previously installed
version of Istio is migrated to the Cloud Service Mesh ingress.
Setting the number of replicas of Istio ingress to 9,
and the number of replicas of Cloud Service Mesh ingress to 1
deployment.apps/istio-ingress patched
Waiting for all istio-ingress pods to be ready
All istio-ingress pods are ready.
deployment.apps/istio-ingressgateway patched
Waiting for all istio-ingressgateway pods to be ready
All istio-ingressgateway pods are ready.
10% traffic has been migrated to Cloud Service Mesh ingress
[[["이해하기 쉬움","easyToUnderstand","thumb-up"],["문제가 해결됨","solvedMyProblem","thumb-up"],["기타","otherUp","thumb-up"]],[["이해하기 어려움","hardToUnderstand","thumb-down"],["잘못된 정보 또는 샘플 코드","incorrectInformationOrSampleCode","thumb-down"],["필요한 정보/샘플이 없음","missingTheInformationSamplesINeed","thumb-down"],["번역 문제","translationIssue","thumb-down"],["기타","otherDown","thumb-down"]],["최종 업데이트: 2025-09-01(UTC)"],[],[],null,["# Migrate your workload traffic to Cloud Service Mesh\n\nThis step in the process allows you to choose how to rollout your changes. You\ncan specify an initial amount of traffic that you want migrate to Cloud Service Mesh\nand then gradually increase the rollout to 100%.\n\nBefore you begin\n----------------\n\n- You must first review and ensure that you meet the\n [requirements for upgrading](/kubernetes-engine/enterprise/knative-serving/docs/install/on-gcp/upgrade).\n\n- The commands on this page use the environment variables and migration script\n from the [upgrade preparation step](/kubernetes-engine/enterprise/knative-serving/docs/install/on-gcp/upgrade/prepare).\n\n- It is important that you perform each step of this process in the\n [specified order](/kubernetes-engine/enterprise/knative-serving/docs/install/on-gcp/upgrade#upgrading).\n\n### Migrate all workload traffic to Cloud Service Mesh\n\nIn this section, the [migration script](/kubernetes-engine/enterprise/knative-serving/docs/install/on-gcp/upgrade/prepare) is used to\nmigrate your existing all traffic to Cloud Service Mesh.\n\n1. Run the following command to set the percent of traffic you want migrated:\n\n ./migration-addon.sh --command migrate-traffic \u003cvar translate=\"no\"\u003eTRAFFIC_PERCENTAGE\u003c/var\u003e\n\n Replace \u003cvar translate=\"no\"\u003eTRAFFIC_PERCENTAGE\u003c/var\u003e with the percent of traffic that you\n want to send to the to Cloud Service Mesh ingress. Valid values are: `0`, `10`,\n `20`, `30`, `40`, `50`, `60`, `70`, `80`, `90`, `100`.\n\n Note that if you have any issues with this step or want to perform a gradual\n rollout, you can re-run this migration script command multiple times until\n you reach 100%.\n\n For example, if you choose to migrate 10% of traffic, the terminal output\n during the process looks similar to the following: \n\n In this step, 10% of traffic from the previously installed\n version of Istio is migrated to the Cloud Service Mesh ingress.\n\n Setting the number of replicas of Istio ingress to 9,\n and the number of replicas of Cloud Service Mesh ingress to 1\n deployment.apps/istio-ingress patched\n\n Waiting for all istio-ingress pods to be ready\n\n All istio-ingress pods are ready.\n deployment.apps/istio-ingressgateway patched\n\n Waiting for all istio-ingressgateway pods to be ready\n\n All istio-ingressgateway pods are ready.\n\n 10% traffic has been migrated to Cloud Service Mesh ingress\n\n | **Note:** The total number of Cloud Service Mesh ingress pods and Istio ingress pods are scaled to 10 even if you currently have less ingress pods.\n |\n |\n | You can run the following command to view the status of the `gke-system`. \n |\n | ```bash\n | kubectl describe pod -n gke-system\n | ```\n |\n |\n | If you receive the `FailedScheduling` warning, your cluster might\n | not have sufficient resources to scale to the necessary number of ingress\n | pods. To increase the number of nodes for your cluster and therefore,\n | increase the amount of available resources, see\n | [Resizing a\n | cluster](/kubernetes-engine/docs/how-to/resizing-a-cluster) in the Google Kubernetes Engine documentation.\n2. You can monitor your traffic of your services, in the Google Cloud console:\n\n [Go to Knative serving](https://console.cloud.google.com/kubernetes/run)\n\nWhat's next\n-----------\n\n[Finalize the upgrade and perform cleanup tasks](/kubernetes-engine/enterprise/knative-serving/docs/install/on-gcp/upgrade/finalize)\n\nRollback\n--------\n\nIf you need to rollback the changes that you made through the steps above, you\ncan use the migration script to set the percentage of traffic to the\nCloud Service Mesh ingress back to `0`: \n\n ./migration-addon.sh --command migrate-traffic 0"]]
