Flagger Install on Alibaba ServiceMesh

This guide walks you through setting up Flagger on Alibaba ServiceMesh.
Prerequisites
Created an ACK(Alibabacloud Container Service for Kubernetes) cluster instance.
Created an ASM(Alibaba ServiceMesh) instance, and added ACK cluster.
Variables declaration
$ACK_CONFIG: the kubeconfig file path of ACK, which be treated as$HOME/.kube/config in the rest of guide.
$MESH_CONFIG: the kubeconfig file path of ASM.
$ISTIO_RELEASE: see https://github.com/istio/istio/releases​
$FLAGGER_SRC: see https://github.com/fluxcd/flagger​
Install Prometheus
Install Prometheus:
kubectl apply -f $ISTIO_RELEASE/samples/addons/prometheus.yaml
it' same with the below cmd:
kubectl --kubeconfig "$ACK_CONFIG" apply -f $ISTIO_RELEASE/samples/addons/prometheus.yaml
Append the below configs to scrape_configs in prometheus configmap, to support telemetry:
scrape_configs:
# Mixer scrapping. Defaults to Prometheus and mixer on same namespace.
- job_name: 'istio-mesh'
  kubernetes_sd_configs:
  - role: endpoints
    namespaces:
      names:
      - istio-system
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
    action: keep
    regex: istio-telemetry;prometheus
# Scrape config for envoy stats
- job_name: 'envoy-stats'
  metrics_path: /stats/prometheus
  kubernetes_sd_configs:
  - role: pod
  relabel_configs:
  - source_labels: [__meta_kubernetes_pod_container_port_name]
    action: keep
    regex: '.*-envoy-prom'
  - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
    action: replace
    regex: ([^:]+)(?::\d+)?;(\d+)
    replacement: $1:15090
    target_label: __address__
  - action: labeldrop
    regex: __meta_kubernetes_pod_label_(.+)
  - source_labels: [__meta_kubernetes_namespace]
    action: replace
    target_label: namespace
  - source_labels: [__meta_kubernetes_pod_name]
    action: replace
    target_label: pod_name
- job_name: 'istio-policy'
  kubernetes_sd_configs:
  - role: endpoints
    namespaces:
      names:
      - istio-system
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
    action: keep
    regex: istio-policy;http-policy-monitoring
- job_name: 'istio-telemetry'
  kubernetes_sd_configs:
  - role: endpoints
    namespaces:
      names:
      - istio-system
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
    action: keep
    regex: istio-telemetry;http-monitoring
- job_name: 'pilot'
  kubernetes_sd_configs:
  - role: endpoints
    namespaces:
      names:
      - istio-system
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
    action: keep
    regex: istiod;http-monitoring
  - source_labels: [__meta_kubernetes_service_label_app]
    target_label: app
- job_name: 'sidecar-injector'
  kubernetes_sd_configs:
  - role: endpoints
    namespaces:
      names:
      - istio-system
  relabel_configs:
  - source_labels: [__meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
    action: keep
    regex: istio-sidecar-injector;http-monitoring
Install Flagger
Add Flagger Helm repository:
helm repo add flagger https://flagger.app
helm repo update
Install Flagger's Canary CRD:
kubectl apply -f $FLAGGER_SRC/artifacts/flagger/crd.yaml
Deploy Flagger for Alibaba ServiceMesh:
cp $MESH_CONFIG kubeconfig
kubectl -n istio-system create secret generic istio-kubeconfig --from-file kubeconfig
kubectl -n istio-system label secret istio-kubeconfig istio/multiCluster=true
helm upgrade -i flagger flagger/flagger \
--namespace=istio-system \
--set crd.create=false \
--set meshProvider=istio \
--set metricsServer=http://prometheus:9090 \
--set istio.kubeconfig.secretName=istio-kubeconfig \
--set istio.kubeconfig.key=kubeconfig
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Last updated 5 months ago