269 lines
7.1 KiB
YAML
269 lines
7.1 KiB
YAML
---
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# Namespace (trust zone; default-deny + policies apply)
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apiVersion: v1
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kind: Namespace
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metadata:
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name: semaphore
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labels:
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homelab.keithjackson.dev/app-namespace: 'true'
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gateway-access: shared
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annotations:
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homelab.keithjackson.dev/backup-policy: daily-offcluster
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---
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# Default-deny baseline (R-NET-01): deny all, allow only DNS
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apiVersion: networking.k8s.io/v1
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kind: NetworkPolicy
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metadata:
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name: default-deny
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namespace: semaphore
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labels:
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homelab.keithjackson.dev/baseline: default-deny
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spec:
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podSelector: {}
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policyTypes:
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- Ingress
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- Egress
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ingress: []
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egress:
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- to:
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- namespaceSelector:
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matchLabels:
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kubernetes.io/metadata.name: kube-system
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ports:
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- protocol: UDP
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port: 53
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- protocol: TCP
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port: 53
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---
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# PVC semaphore-config (R-STATE)
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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name: semaphore-config
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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spec:
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accessModes:
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- ReadWriteOnce
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storageClassName: longhorn
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resources:
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requests:
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storage: 1Gi
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---
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# Deployment (R-PLAT-02)
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: semaphore
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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spec:
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replicas: 1
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strategy:
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type: Recreate
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selector:
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matchLabels:
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app.kubernetes.io/name: semaphore
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template:
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metadata:
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labels:
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app.kubernetes.io/name: semaphore
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homelab.keithjackson.dev/egress-class: internet
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homelab.keithjackson.dev/auth-mode: oidc
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annotations:
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homelab.keithjackson.dev/auth-mode: oidc
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homelab.keithjackson.dev/auth-groups: platform-admins
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spec:
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containers:
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- name: semaphore
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image: semaphoreui/semaphore:v2.19.17
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ports:
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- containerPort: 3000
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env:
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- name: SEMAPHORE_DB_DIALECT
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value: postgres
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- name: SEMAPHORE_DB_HOST
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value: semaphore-db-rw.semaphore-db.svc.cluster.local
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- name: SEMAPHORE_DB_PORT
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value: '5432'
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- name: SEMAPHORE_DB
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value: semaphore
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- name: SEMAPHORE_DB_USER
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value: semaphore
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- name: SEMAPHORE_DB_PASS
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: db-password
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- name: SEMAPHORE_ADMIN
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: admin-username
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- name: SEMAPHORE_ADMIN_PASSWORD
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: admin-password
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- name: SEMAPHORE_ADMIN_NAME
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value: Semaphore Admin
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- name: SEMAPHORE_ADMIN_EMAIL
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value: admin@${BASE_DOMAIN}
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- name: SEMAPHORE_ACCESS_KEY_ENCRYPTION
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: access-key-encryption
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- name: SEMAPHORE_PORT
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value: :3000
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- name: SEMAPHORE_OIDC_CLIENT_SECRET
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: oidc-client-secret
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- name: SEMAPHORE_OIDC_PROVIDERS
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value: '{"keycloak":{"display_name":"Keycloak","provider_url":"https://keycloak.${BASE_DOMAIN}/realms/homelab","client_id":"semaphore","client_secret":"$(SEMAPHORE_OIDC_CLIENT_SECRET)","redirect_url":"https://semaphore.${BASE_DOMAIN}/api/auth/oidc/keycloak/redirect","scopes":["openid","profile","email"],"username_claim":"preferred_username","email_claim":"email","name_claim":"name","order":1}}'
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volumeMounts:
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- name: config
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mountPath: /etc/semaphore
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securityContext:
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runAsUser: 1001
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runAsGroup: 0
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runAsNonRoot: true
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fsGroup: 1001
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volumes:
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- name: config
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persistentVolumeClaim:
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claimName: semaphore-config
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---
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# Service
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apiVersion: v1
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kind: Service
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metadata:
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name: semaphore
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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spec:
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selector:
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app.kubernetes.io/name: semaphore
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ports:
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- name: port-3000
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port: 3000
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targetPort: 3000
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---
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# CiliumNetworkPolicy egress allow (R-NET-02): semaphore-allow-semaphore-db-5432
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apiVersion: cilium.io/v2
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kind: CiliumNetworkPolicy
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metadata:
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name: semaphore-allow-semaphore-db-5432
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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spec:
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endpointSelector:
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matchLabels:
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app.kubernetes.io/name: semaphore
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egress:
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- toEndpoints:
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- matchLabels:
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app.kubernetes.io/name: semaphore-db
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k8s:io.kubernetes.pod.namespace: semaphore-db
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toPorts:
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- ports:
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- port: '5432'
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protocol: TCP
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---
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# CiliumNetworkPolicy gateway-ingress allow (R-NET-01/02): semaphore-allow-gateway-ingress
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apiVersion: cilium.io/v2
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kind: CiliumNetworkPolicy
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metadata:
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name: semaphore-allow-gateway-ingress
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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spec:
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endpointSelector:
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matchLabels:
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app.kubernetes.io/name: semaphore
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ingress:
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- fromEntities:
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- ingress
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toPorts:
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- ports:
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- port: '3000'
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protocol: TCP
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---
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# CiliumNetworkPolicy world egress allow (egress class governs the path; R-NET-05): semaphore-allow-internet-egress
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apiVersion: cilium.io/v2
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kind: CiliumNetworkPolicy
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metadata:
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name: semaphore-allow-internet-egress
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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spec:
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endpointSelector:
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matchLabels:
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app.kubernetes.io/name: semaphore
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egress:
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- toEntities:
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- world
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- toEndpoints:
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- matchLabels:
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io.kubernetes.pod.namespace: keycloak
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app: keycloak
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---
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# HTTPRoute semaphore-3000 (R-TLS/R-DNS)
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apiVersion: gateway.networking.k8s.io/v1
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kind: HTTPRoute
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metadata:
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name: semaphore-3000
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namespace: semaphore
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labels:
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app.kubernetes.io/name: semaphore
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annotations:
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homelab.keithjackson.dev/auth-mode: oidc
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homelab.keithjackson.dev/auth-groups: platform-admins
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external-dns.alpha.kubernetes.io/controller: none
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spec:
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parentRefs:
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- name: shared
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namespace: gateway
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sectionName: https
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hostnames:
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- semaphore.${BASE_DOMAIN}
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rules:
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- matches:
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- path:
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type: PathPrefix
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value: /
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backendRefs:
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- name: semaphore
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port: 3000
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---
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# PrometheusRule SLI alerts (R-OBS-01)
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apiVersion: monitoring.coreos.com/v1
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kind: PrometheusRule
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metadata:
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name: semaphore-slis
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namespace: semaphore
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labels:
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release: kube-prometheus-stack
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app.kubernetes.io/name: semaphore
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spec:
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groups:
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- name: semaphore.slis
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rules:
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- alert: semaphore-down
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expr: kube_deployment_status_replicas_available{namespace="semaphore", deployment="semaphore"} == 0 or absent(kube_deployment_status_replicas_available{namespace="semaphore", deployment="semaphore"})
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for: 5m
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labels:
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severity: critical
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service: semaphore
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annotations:
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summary: semaphore is down
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description: 'semaphore: its Deployment has no available/ready replica for 5m, or the signal is gone entirely (SLI: up, via kube_deployment_status_replicas_available).'
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