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| # Flagger install on Kubernetes with SuperGloo | ||
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| This guide walks you through setting up Flagger on a Kubernetes cluster using [SuperGloo](https://github.com/solo-io/supergloo). | ||
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| SuperGloo by [Solo.io](https://solo.io) is an opinionated abstraction layer that will simplify the installation, management, and operation of your service mesh. | ||
| It supports running multiple ingress with multiple mesh (Istio, App Mesh, Consul Connect and Linkerd 2) in the same cluster. | ||
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| ### Prerequisites | ||
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| Flagger requires a Kubernetes cluster **v1.11** or newer with the following admission controllers enabled: | ||
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| * MutatingAdmissionWebhook | ||
| * ValidatingAdmissionWebhook | ||
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| ### Install Istio with SuperGloo | ||
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| Download SuperGloo CLI and add it to your path: | ||
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| ```bash | ||
| curl -sL https://run.solo.io/supergloo/install | sh | ||
| export PATH=$HOME/.supergloo/bin:$PATH | ||
| ``` | ||
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| Deploy the SuperGloo controller in the `supergloo-system` namespace: | ||
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| ```bash | ||
| supergloo init | ||
| ``` | ||
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| Create the `istio-system` namespace and install Istio with traffic management, telemetry and Prometheus enabled: | ||
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| ```bash | ||
| ISTIO_VER="1.0.6" | ||
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| kubectl create ns istio-system | ||
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| supergloo install istio --name istio \ | ||
| --namespace=supergloo-system \ | ||
| --auto-inject=true \ | ||
| --installation-namespace=istio-system \ | ||
| --mtls=false \ | ||
| --prometheus=true \ | ||
| --version ${ISTIO_VER} | ||
| ``` | ||
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| Create a cluster role binding so that Flagger can manipulate SuperGloo custom resources: | ||
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| ```bash | ||
| kubectl create clusterrolebinding flagger-supergloo \ | ||
| --clusterrole=mesh-discovery \ | ||
| --serviceaccount=istio-system:flagger | ||
| ``` | ||
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| Wait for the Istio control plane to become available: | ||
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| ```bash | ||
| kubectl -n istio-system rollout status deployment/istio-sidecar-injector | ||
| kubectl -n istio-system rollout status deployment/prometheus | ||
| ``` | ||
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| ### Install Flagger | ||
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| Add Flagger Helm repository: | ||
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| ```bash | ||
| helm repo add flagger https://flagger.app | ||
| ``` | ||
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| Deploy Flagger in the _**istio-system**_ namespace and set the service mesh provider to SuperGloo: | ||
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| ```bash | ||
| helm upgrade -i flagger flagger/flagger \ | ||
| --namespace=istio-system \ | ||
| --set metricsServer=http://prometheus.istio-system:9090 \ | ||
| --set meshProvider=supergloo:istio.supergloo-system | ||
| ``` | ||
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| When using SuperGloo the mesh provider format is `supergloo:<MESH-NAME>.<SUPERGLOO-NAMESPACE>`. | ||
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| Optionally you can enable **Slack** notifications: | ||
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| ```bash | ||
| helm upgrade -i flagger flagger/flagger \ | ||
| --reuse-values \ | ||
| --namespace=istio-system \ | ||
| --set slack.url=https://hooks.slack.com/services/YOUR/SLACK/WEBHOOK \ | ||
| --set slack.channel=general \ | ||
| --set slack.user=flagger | ||
| ``` | ||
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| ### Install Grafana | ||
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| Flagger comes with a Grafana dashboard made for monitoring the canary analysis. | ||
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| Deploy Grafana in the _**istio-system**_ namespace: | ||
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| ```bash | ||
| helm upgrade -i flagger-grafana flagger/grafana \ | ||
| --namespace=istio-system \ | ||
| --set url=http://prometheus.istio-system:9090 | ||
| ``` | ||
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| You can access Grafana using port forwarding: | ||
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| ```bash | ||
| kubectl -n istio-system port-forward svc/flagger-grafana 3000:80 | ||
| ``` | ||
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| ### Install Load Tester | ||
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| Flagger comes with an optional load testing service that generates traffic | ||
| during canary analysis when configured as a webhook. | ||
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| Deploy the load test runner with Helm: | ||
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| ```bash | ||
| helm upgrade -i flagger-loadtester flagger/loadtester \ | ||
| --namespace=test \ | ||
| --set cmd.timeout=1h | ||
| ``` | ||
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| Deploy with kubectl: | ||
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| ```bash | ||
| helm fetch --untar --untardir . flagger/loadtester && | ||
| helm template loadtester \ | ||
| --name flagger-loadtester \ | ||
| --namespace=test | ||
| > $HOME/flagger-loadtester.yaml | ||
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| # apply | ||
| kubectl apply -f $HOME/flagger-loadtester.yaml | ||
| ``` | ||
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| > **Note** that the load tester should be deployed in a namespace with Istio sidecar injection enabled. |