文件列表:

Dockerfile (200, 2023-04-20)
app.py (177, 2023-04-20)
k8s_cluster (0, 2023-04-20)
k8s_cluster\canary.yaml (1607, 2023-04-20)
k8s_cluster\custom_404_metrics.yaml (780, 2023-04-20)
k8s_cluster\deployment.yaml (656, 2023-04-20)
k8s_cluster\gateway.yaml (274, 2023-04-20)
k8s_cluster\tester_app.yaml (1797, 2023-04-20)
k8s_cluster\virtualservice.yaml (328, 2023-04-20)
requirements.txt (19, 2023-04-20)
test_hello.py (391, 2023-04-20)

# k8s-flagger ### Configure cluster #### Install istio ```BASH curl -L https://istio.io/downloadIstio | sh cd istio-1.16.1 export PATH=$PWD/bin:$PATH istioctl install --set profile=demo -y ``` #### Install prometheus ```BASH kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.10/samples/addons/prometheus.yaml ``` #### Install Flagger ```BASH helm repo add flagger https://flagger.app kubectl apply -f https://raw.githubusercontent.com/fluxcd/flagger/main/artifacts/flagger/crd.yaml helm upgrade -i flagger flagger/flagger --namespace=istio-system --set crd.create=false --set meshProvider=istio --set metricsServer=http://prometheus:9090 ``` #### Install Grafana ```BASH helm upgrade -i flagger-grafana flagger/grafana --namespace=istio-system --set url=http://prometheus.istio-system:9090 --set user=admin --set password=change-me kubectl patch svc flagger-grafana -n istio-system -p '{"spec": {"type": "NodePort"}}' kubectl -n istio-system get svc ``` #### Install Kiali ```BASH kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/addons/kiali.yaml kubectl patch svc kiali -n istio-system -p '{"spec": {"type": "NodePort"}}' ``` #### Name pod from istio-system namespaces flagger-5c8658c***-jplrh flagger-grafana-6594969455-lhwbk istio-egressgateway-56b4ddcfd6-9n5zb istio-ingressgateway-76cd944566-g2d4k istiod-56b77cf5d6-b59xs kiali-748d5cdbfc-blcsp prometheus-69f7f4d689-cvrcx ### Deploy app ```BASH kubectl create ns test kubectl label namespace test istio-injection=enabled ``` ```BASH kubectl apply -f https://raw.githubusercontent.com/geksogen/k8s-flagger/master/k8s_cluster/deployment.yaml ``` #### New window ```BASH kubectl -n test run -i -t nginx --rm=true --image=nginx -- bash ``` ```BASH curl -X GET http://appdeploy:5000 curl -X GET http://appdeploy:5000/return_version ``` #### Patch istio-ingressgateway to nodeport ```BASH kubectl patch svc -n istio-system istio-ingressgateway --type='json' -p '[{"op":"replace","path":"/spec/type","value":"NodePort"}]' kubectl apply -f https://raw.githubusercontent.com/geksogen/k8s-flagger/master/k8s_cluster/gateway.yaml kubectl apply -f https://raw.githubusercontent.com/geksogen/k8s-flagger/master/k8s_cluster/virtualservice.yaml export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}') && echo $INGRESS_PORT ``` Проверяем ответ от приложения через istio-ingressgateway ```BASH curl 217.28.220.13:$INGRESS_PORT curl 217.28.220.13:$INGRESS_PORT/return_version for i in `seq 10000`; do curl -XGET http://217.28.220.13:$INGRESS_PORT/return_version;\n; sleep 0.1; done watch -n 1 curl -o /dev/null -s -w %{http_code} http://217.28.220.13:$INGRESS_PORT/return_version ``` Смотрим в Kiali граф трафика #### Deploy the load testing service to generate traffic during the canary analysis ```BASH helm upgrade -i flagger-loadtester flagger/loadtester --namespace=test ``` #### Before creating canary we need to delete the virtual service, as it will now be managed by the flagger from the above canary.yaml file ```BASH kubectl -n test delete -f https://raw.githubusercontent.com/geksogen/k8s-flagger/master/k8s_cluster/virtualservice.yaml ``` #### Create 404 metrix ```BASH kubectl apply -f https://raw.githubusercontent.com/geksogen/k8s-flagger/master/k8s_cluster/custom_404_metrics.yaml ``` #### Create Canary ```BASH kubectl apply -f https://raw.githubusercontent.com/geksogen/k8s-flagger/master/k8s_cluster/canary.yaml ``` #### Run traffic to app ```BASH for i in `seq 10000`; do curl -XGET http://217.28.220.13:$INGRESS_PORT/return_version;\; sleep 0.1; done watch -n 1 curl -o /dev/null -s -w %{http_code} curl -XGET http://217.28.220.13:$INGRESS_PORT/return_version ``` #### See canary status ```BASH watch kubectl get canaries --all-namespaces ``` #### Change image tag ```BASH kubectl -n test set image deployment/appdeploy appdeploy=geksogen/k8s-flagger:47 ``` #### Result - [x] Определение изменении в namespace (deployment spec, secrets or configmaps changes) - [ ] Проверка жизнеспособности Cannary pods - [ ] Тестирование Cannary pods - [ ] Если тестирование с ошибкои останавливаем процесс - [ ] Тестирование успешно, гранулируем трафик - [ ] Если тестирование с ошибкои останавливаем процесс - [ ] Переключение трафика на Cannary - [ ] Удаление ресурсов прежнеи версии - [ ] Cannary становится Latest версиеи #### Clear resource ```BASH # Delete app kubectl -n test delete all -l app=flask kubectl -n test delete gateway appdeploy-gateway kubectl -n test delete virtualservice appdeploy helm -n test uninstall flagger-loadtester kubectl delete ns test # Delete istio cd export PATH=$PWD/bin:$PATH istioctl x uninstall --purge kubectl delete namespace istio-system ```

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