refactor(infra): restructure metrics collection infrastructure
Added new playbook `setup_metrics_server.yml` and standalone role `roles/metrics_server/` to centralize Kubernetes metrics server deployment and configuration, separating concerns from the main uyuni role for modularity and reuse.
This commit is contained in:
parent
b0a8b35dd9
commit
6e0200f64c
9 changed files with 480 additions and 0 deletions
6
playbooks/setup_metrics_server.yml
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6
playbooks/setup_metrics_server.yml
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@ -0,0 +1,6 @@
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---
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- name: Deploy Kubernetes Metrics Server
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hosts: manager_nodes
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become: false
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roles:
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- metrics_server
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15
roles/metrics_server/defaults/main.yml
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15
roles/metrics_server/defaults/main.yml
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@ -0,0 +1,15 @@
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---
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metrics_server_namespace: kube-system
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metrics_server_kubeconfig: "/home/{{ ansible_user }}/.kube/config"
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metrics_server_chart_version: "3.12.0"
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metrics_server_use_helm: true
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metrics_server_args:
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- --kubelet-insecure-tls
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- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
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- --metric-resolution=15s
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metrics_server_resources_requests_memory: "200Mi"
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metrics_server_resources_requests_cpu: "100m"
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metrics_server_resources_limits_memory: "500Mi"
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metrics_server_resources_limits_cpu: "500m"
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199
roles/metrics_server/files/metrics-server-manifest.yml
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199
roles/metrics_server/files/metrics-server-manifest.yml
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@ -0,0 +1,199 @@
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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labels:
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k8s-app: metrics-server
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name: system:aggregated-metrics-reader
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rules:
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- apiGroups:
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- metrics.k8s.io
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resources:
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- pods
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- nodes
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verbs:
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- get
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- list
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- watch
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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labels:
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k8s-app: metrics-server
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name: system:metrics-server
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rules:
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- apiGroups:
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- ""
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resources:
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- nodes
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verbs:
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- get
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- list
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- watch
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- apiGroups:
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- ""
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resources:
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- pods
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- nodes
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- nodes/stats
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- namespaces
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- configmaps
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verbs:
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- get
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- list
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- watch
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: RoleBinding
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server-auth-reader
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namespace: kube-system
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: Role
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name: extension-apiserver-authentication-reader
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subjects:
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- kind: ServiceAccount
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server:system:auth-delegator
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: system:auth-delegator
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subjects:
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- kind: ServiceAccount
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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labels:
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k8s-app: metrics-server
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name: system:metrics-server
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: system:metrics-server
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subjects:
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- kind: ServiceAccount
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: Role
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metadata:
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labels:
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k8s-app: metrics-server
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name: extension-apiserver-authentication-reader
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namespace: kube-system
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rules:
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- apiGroups:
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- ""
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resources:
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- configmaps
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name: extension-apiserver-authentication
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verbs:
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- get
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---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server
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namespace: kube-system
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spec:
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selector:
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matchLabels:
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k8s-app: metrics-server
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strategy:
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rollingUpdate:
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maxUnavailable: 0
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template:
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metadata:
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labels:
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k8s-app: metrics-server
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spec:
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containers:
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- args:
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- --kubelet-insecure-tls
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- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
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- --metric-resolution=15s
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image: registry.k8s.io/metrics-server/metrics-server:v0.7.2
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imagePullPolicy: IfNotPresent
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livenessProbe:
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failureThreshold: 3
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httpGet:
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path: /livez
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port: https
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scheme: HTTPS
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periodSeconds: 10
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name: metrics-server
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ports:
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- containerPort: 4443
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name: https
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protocol: TCP
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readinessProbe:
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failureThreshold: 3
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httpGet:
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path: /readyz
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port: https
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scheme: HTTPS
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periodSeconds: 10
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resources:
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requests:
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cpu: 100m
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memory: 200Mi
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limits:
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cpu: 500m
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memory: 500Mi
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securityContext:
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allowPrivilegeEscalation: false
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capabilities:
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drop:
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- ALL
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readOnlyRootFilesystem: true
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volumeMounts:
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- mountPath: /tmp
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name: tmp-dir
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nodeSelector:
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kubernetes.io/os: linux
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priorityClassName: system-cluster-critical
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serviceAccountName: metrics-server
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volumes:
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- emptyDir: {}
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name: tmp-dir
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---
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apiVersion: apiregistration.k8s.io/v1
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kind: APIService
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metadata:
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labels:
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k8s-app: metrics-server
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name: v1beta1.metrics.k8s.io
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spec:
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group: metrics.k8s.io
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groupPriorityMinimum: 100
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insecureSkipTLSVerify: true
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service:
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name: metrics-server
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namespace: kube-system
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version: v1beta1
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versionPriority: 100
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2
roles/metrics_server/meta/main.yml
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2
roles/metrics_server/meta/main.yml
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@ -0,0 +1,2 @@
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---
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dependencies: []
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30
roles/metrics_server/tasks/helm.yml
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30
roles/metrics_server/tasks/helm.yml
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@ -0,0 +1,30 @@
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---
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- name: Helm | Add metrics-server repository
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ansible.builtin.command: helm repo add metrics-server https://kubernetes-sigs.github.io/metrics-server/
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register: _helm_repo_add
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changed_when: "'already exists' not in _helm_repo_add.stdout"
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failed_when: _helm_repo_add.rc != 0 and 'already exists' not in _helm_repo_add.stdout
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- name: Helm | Update repositories
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ansible.builtin.command: helm repo update
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changed_when: false
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- name: Helm | Install or upgrade metrics-server
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ansible.builtin.command: >
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helm upgrade --install metrics-server metrics-server/metrics-server
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--namespace {{ metrics_server_namespace }}
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--create-namespace
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--version {{ metrics_server_chart_version }}
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--set args[0]=--kubelet-insecure-tls
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--set args[1]=--metric-resolution=15s
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--set resources.requests.cpu={{ metrics_server_resources_requests_cpu }}
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--set resources.requests.memory={{ metrics_server_resources_requests_memory }}
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--set resources.limits.cpu={{ metrics_server_resources_limits_cpu }}
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--set resources.limits.memory={{ metrics_server_resources_limits_memory }}
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--timeout 10m0s
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--wait
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environment:
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KUBECONFIG: "{{ metrics_server_kubeconfig }}"
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PATH: "/usr/local/bin:/usr/bin:/bin"
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register: _helm_install
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changed_when: "'STATUS: deployed' in _helm_install.stdout or 'has been upgraded' in _helm_install.stdout"
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8
roles/metrics_server/tasks/main.yml
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8
roles/metrics_server/tasks/main.yml
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@ -0,0 +1,8 @@
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---
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- name: Helm | Deploy metrics-server
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ansible.builtin.include_tasks: helm.yml
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when: metrics_server_use_helm | bool
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- name: Manifest | Deploy metrics-server
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ansible.builtin.include_tasks: manifest.yml
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when: not metrics_server_use_helm | bool
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9
roles/metrics_server/tasks/manifest.yml
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9
roles/metrics_server/tasks/manifest.yml
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---
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- name: Manifest | Apply metrics-server
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ansible.builtin.command: kubectl apply -f {{ role_path }}/files/metrics-server-manifest.yml
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environment:
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KUBECONFIG: "{{ metrics_server_kubeconfig }}"
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PATH: "/usr/local/bin:/usr/bin:/bin"
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register: _manifest_apply
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changed_when: "'created' in _manifest_apply.stdout or 'configured' in _manifest_apply.stdout"
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failed_when: _manifest_apply.rc != 0 and 'already exists' not in _manifest_apply.stderr
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199
roles/metrics_server/templates/metrics-server-manifest.yml.j2
Normal file
199
roles/metrics_server/templates/metrics-server-manifest.yml.j2
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@ -0,0 +1,199 @@
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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labels:
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k8s-app: metrics-server
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name: system:aggregated-metrics-reader
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rules:
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- apiGroups:
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- metrics.k8s.io
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resources:
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- pods
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- nodes
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verbs:
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- get
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- list
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- watch
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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labels:
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k8s-app: metrics-server
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name: system:metrics-server
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rules:
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- apiGroups:
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- ""
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resources:
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- nodes
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verbs:
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- get
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- list
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- watch
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- apiGroups:
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- ""
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resources:
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- pods
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- nodes
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- nodes/stats
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- namespaces
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- configmaps
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verbs:
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- get
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- list
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- watch
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: RoleBinding
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server-auth-reader
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namespace: kube-system
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: Role
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name: extension-apiserver-authentication-reader
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subjects:
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- kind: ServiceAccount
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server:system:auth-delegator
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: system:auth-delegator
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subjects:
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- kind: ServiceAccount
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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labels:
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k8s-app: metrics-server
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name: system:metrics-server
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: system:metrics-server
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subjects:
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- kind: ServiceAccount
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name: metrics-server
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namespace: kube-system
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: Role
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metadata:
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labels:
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k8s-app: metrics-server
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name: extension-apiserver-authentication-reader
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namespace: kube-system
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rules:
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- apiGroups:
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- ""
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resources:
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- configmaps
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name: extension-apiserver-authentication
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verbs:
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- get
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---
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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labels:
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k8s-app: metrics-server
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name: metrics-server
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namespace: kube-system
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spec:
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selector:
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matchLabels:
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k8s-app: metrics-server
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strategy:
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rollingUpdate:
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maxUnavailable: 0
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template:
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metadata:
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labels:
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k8s-app: metrics-server
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spec:
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containers:
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- args:
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- --kubelet-insecure-tls
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- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
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- --metric-resolution=15s
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image: registry.k8s.io/metrics-server/metrics-server:v0.7.2
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imagePullPolicy: IfNotPresent
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livenessProbe:
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failureThreshold: 3
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httpGet:
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path: /livez
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port: https
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scheme: HTTPS
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periodSeconds: 10
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name: metrics-server
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ports:
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- containerPort: 4443
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name: https
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protocol: TCP
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readinessProbe:
|
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failureThreshold: 3
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httpGet:
|
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path: /readyz
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port: https
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scheme: HTTPS
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periodSeconds: 10
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resources:
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requests:
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cpu: 100m
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memory: 200Mi
|
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limits:
|
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cpu: 500m
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memory: 500Mi
|
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securityContext:
|
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allowPrivilegeEscalation: false
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capabilities:
|
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drop:
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- ALL
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readOnlyRootFilesystem: true
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volumeMounts:
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- mountPath: /tmp
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name: tmp-dir
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nodeSelector:
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kubernetes.io/os: linux
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priorityClassName: system-cluster-critical
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serviceAccountName: metrics-server
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volumes:
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- emptyDir: {}
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name: tmp-dir
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---
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apiVersion: apiregistration.k8s.io/v1
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kind: APIService
|
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metadata:
|
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labels:
|
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k8s-app: metrics-server
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name: v1beta1.metrics.k8s.io
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spec:
|
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group: metrics.k8s.io
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groupPriorityMinimum: 100
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insecureSkipTLSVerify: true
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service:
|
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name: metrics-server
|
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namespace: kube-system
|
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version: v1beta1
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versionPriority: 100
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12
roles/metrics_server/templates/metrics-server-values.yml.j2
Normal file
12
roles/metrics_server/templates/metrics-server-values.yml.j2
Normal file
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@ -0,0 +1,12 @@
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args:
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{% for arg in metrics_server_args %}
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- {{ arg }}
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{% endfor %}
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|
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resources:
|
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requests:
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memory: {{ metrics_server_resources_requests_memory }}
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cpu: {{ metrics_server_resources_requests_cpu }}
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limits:
|
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memory: {{ metrics_server_resources_limits_memory }}
|
||||
cpu: {{ metrics_server_resources_limits_cpu }}
|
||||
Loading…
Reference in a new issue