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Monitoring Spinnaker with Prometheus
Armory recommends monitoring the health of Spinnaker in every production instance. This document describes how to set up a basic Prometheus and Grafana stack as well as enabling monitoring for the Spinnaker services.
Additional Prometheus and Grafana configuration is necessary to make them production-grade, and this configuration is not a part of this document. Also note that monitoring the Pipelines as Code service (Dinghy) and the Terraform Integration service (Terraformer) are not discussed on this page.
ImportantArmory 2.20 (OSS 1.20.x) introduced changes to metric names and the Monitoring Daemon. These changes mean that the monitoring solutions before 2.20 are incompatiable with Armory 2.20.x (OSS 1.20.x) and later. If you are using one of those versions, see this page for 2.19.x and earlier.
- You are familiar with Prometheus and Grafana
- Spinnaker is deployed in the
- Prometheus and Grafana are deployed in the
kube-prometheus to create a monitoring stack
You can skip this section if you already have a monitoring stack.
A quick and easy way to configure a cluster monitoring solution is to use
kube-prometheus. This project creates a monitoring stack that includes cluster monitoring with Prometheus and dashboards with Grafana.
To create the stack, follow the kube-prometheus quick start instructions beginning with the Compatibility Matrix section.
After you complete the instructions, you have pods running in the
% kubectl get pods --namespace monitoring NAME READY STATUS RESTARTS AGE alertmanager-main-0 2/2 Running 0 44s alertmanager-main-1 2/2 Running 0 44s alertmanager-main-2 2/2 Running 0 44s grafana-77978cbbdc-x5rsq 1/1 Running 0 40s kube-state-metrics-7f6d7b46b4-crzx2 3/3 Running 0 40s node-exporter-nrc88 2/2 Running 0 41s prometheus-adapter-68698bc948-bl7p8 1/1 Running 0 40s prometheus-k8s-0 3/3 Running 1 39s prometheus-k8s-1 3/3 Running 1 39s prometheus-operator-6685db5c6-qfpbj 1/1 Running 0 106s
Access the Prometheus web interface by using the
kubectl port-forward command. If you want to expose this interface for others to use, create an ingress service. Make sure you nable security controls that follow Prometheus best practices.
% kubectl --namespace monitoring port-forward svc/prometheus-k8s 9090 &
Grant Prometheus RBAC permissions
There are two steps to configure Prometheus to monitor Spinnaker:
- Add permissions for Prometheus to talk to the Spinnaker namespace
- Configure Prometheus to discover the Spinnaker endpoints
Add permissions for Prometheus by applying the following configuration to your cluster. You can learn more about this process on the Prometheus Operator homepage.
apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: # name can be either prometheus or prometheus-k8s depending on the version of the prometheus-operator name: prometheus roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole # name can be either prometheus or prometheus-k8s depending on the version of the prometheus-operator name: prometheus subjects: - kind: ServiceAccount # name can be either prometheus or prometheus-k8s depending on the version of the prometheus-operator name: prometheus-k8s namespace: monitoring --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRole metadata: # name can be either prometheus or prometheus-k8s depending on the version of the prometheus-operator name: prometheus rules: - apiGroups: [""] resources: - nodes - nodes/metrics - services - endpoints - pods verbs: ["get", "list", "watch"] - apiGroups: [""] resources: - configmaps verbs: ["get"] - nonResourceURLs: ["/metrics"] verbs: ["get"] --- apiVersion: v1 kind: ServiceAccount metadata: namespace: monitoring # name can be either prometheus or prometheus-k8s depending on the version of the prometheus-operator name: prometheus-k8s
Configure monitoring using the Observability Plugin
Before configuring monitoring, read and understand the following information about the security implications.
If any of your services, typically Gate, are exposed to the open internet, there is a
risk that you can publicly expose information. Armory recommends that you filter
these paths at your edge layer in some manner. Be aware of any endpoints you
expose. Spring boot exposes the health endpoint by default though with some
restrictions on what information is exposed. When auth is enabled, Gate restricts
access to the endpoints other than
/health, preventing access to metric data.
For more information on Spring actuators, see the Monitoring and Management.
Armory recommends that you monitor your systems by using the Armory Observabililty Plugin. This is an open source solution for monitoring Spinnaker. The plugin supports the following:
- Adding Prometheus (OpenMetrics) endpoints to Spinnaker pods (explained below).
- Sending data to NewRelic (documented on the plugin page).
The Observability Plugin removes the service name from the metric. This is incompatible with the behavior of the open source Spinnaker Monitoring daemon system, which was the default monitoring solution in versions earlier than 2.20 and is now deprecated.
Install the plugin
To install the Observability plugin, add a plugin configuration to the profiles for your services:
- Add it for all services in
spinnaker-local.yml(Halyard installs) or the
spinnakerprofile section (Operator installs).
- Add it to the services you want to monitor. This local profile should contain the following to enable Prometheus:
# These lines are spring-boot configuration to allow access to the metrics # endpoints. This plugin adds the "aop-prometheus" endpoint on the # "<service>:<port>/aop-prometheus" path. management: endpoints: web: # Read the security warning at the start of this section about what gets exposed!! exposure.include: health,info,aop-prometheus spinnaker: extensibility: plugins: Armory.ObservabilityPlugin: enabled: true version: 1.1.3 # This is the basic configuration for prometheus to be enabled config.metrics: prometheus: enabled: true repositories: armory-observability-plugin-releases: url: https://raw.githubusercontent.com/armory-plugins/armory-observability-plugin-releases/master/repositories.json
More options for management endpoints and the plugin are available on the Plugin readme.
Add the ServiceMonitor
Prometheus Operator uses a “ServiceMonitor” to add targets that get scraped for monitoring. The following
example config shows how to monitor pods that are using the Observability Plugin to expose the
aop-prometheus endpoint. Note that the example contains both the exclusion of certain services (such as Redis) and changes to the Gate endpoint to show you different options.
These are examples of potential configurations. Use them as a starting point. Armory recommends that you understand how they operate and find services. Adapt them to your environment.
apiVersion: monitoring.coreos.com/v1 kind: ServiceMonitor metadata: labels: app: spin # This label is here to match the prometheus operator serviceMonitorSelector attribute # prometheus.prometheusSpec.serviceMonitorSelector. For more information, see # https://github.com/helm/charts/tree/master/stable/prometheus-operator release: prometheus-operator name: spinnaker-all-metrics namespace: spinnaker spec: endpoints: - interval: 10s path: /aop-prometheus selector: matchExpressions: - key: cluster operator: NotIn values: - spin-gate - spin-gate-api - spin-gate-custom - spin-deck - spin-deck-custom - spin-redis - spin-terraformer - spin-dinghy matchLabels: app: spin
The example excludes Gate, the API service since Gate restricts access to the endpoints unless authenticated (excluding health).
The following example is for a service monitor for Gate on a different path and using TLS.
Once these are applied, you can port forward prometheus and validate that prometheus has discovered and scraped targets as appropriate.
apiVersion: monitoring.coreos.com/v1 kind: ServiceMonitor metadata: name: spinnaker-internal-metrics namespace: spinnaker labels: app: spin # This label is here to match the prometheus operator serviceMonitorSelector attribute # prometheus.prometheusSpec.serviceMonitorSelector # https://github.com/helm/charts/tree/master/stable/prometheus-operator release: prometheus-operator spec: selector: matchLabels: cluster: spin-gate endpoints: - interval: 10s path: "/api/v1/aop-prometheus" # If Prometheus returns the error "http: server gave HTTP response to HTTPS client" then # replace scheme with targetPort: # Note that "port" is string only. "targetPort" is integer or string. # For example, targetPort: 8084 scheme: "https" tlsConfig: insecureSkipVerify: true
Check for Spinnaker targets in Prometheus
After applying these changes, you should be able to see Spinnaker targets in Prometheus. It may take 3 to 5 minutes for this to show up depending on where Prometheus is in its config polling interval.
Configure port forwarding for Grafana:
$ kubectl --namespace monitoring port-forward svc/grafana 3000
Access the Grafana web interface via http://localhost:3000 and use the default Grafana username and password of
Add Armory dashboards to Grafana
Armory provides some sample dashboards (in JSON format) that you can import into Grafana as a starting point for metrics to graph for monitoring. Armory has additional dashboards that are availabe to Armory customers. You can skip this section if you are a Grafana expert.
To import the sample dashboards, perform the following steps:
- Git clone this repo to your local workstation: (https://gitlab.com/uneeq-oss/spinnaker-mixin)
- Access the Grafana web interface (as shown above)
- Navigate to Dashboards then Manage
- Click on the Import button
- Upload the one or more of the sample dashboard files from the repo you cloned
After importing the dashboards, you can explore graphs for each service by clicking on Dashboards > Manage > Spinnaker Kubernetes Details.
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