init: 아르고cd, vault 기반 인프라 설계

infra/vault/base/files/vault/vault.hcl

@@ -0,0 +1,23 @@
+ui = true
+disable_mlock = true
+api_addr = "http://vault.vault.svc.cluster.local:8200"
+cluster_addr = "http://vault.vault.svc.cluster.local:8201"
+
+listener "tcp" {
+  address = "0.0.0.0:8200"
+  cluster_address = "0.0.0.0:8201"
+  tls_disable = 1
+}
+
+seal "transit" {
+  address         = "http://vault-transit.vault-transit.svc.cluster.local:8200"
+  disable_renewal = "false"
+  key_name        = "workload-vault-dev-unseal"
+  mount_path      = "transit/"
+  tls_skip_verify = "true"
+}
+
+storage "raft" {
+  path = "/vault/data"
+  node_id = "vault-dev-0"
+}

infra/vault/base/kustomization.yaml

@@ -0,0 +1,17 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - vault-serviceaccount.yaml
+  - vault-auth-delegator.clusterrolebinding.yaml
+  - vault-pvc.yaml
+  - vault-service.yaml
+  - vault-deployment.yaml
+
+generatorOptions:
+  disableNameSuffixHash: true
+
+configMapGenerator:
+  - name: vault-config
+    files:
+      - files/vault/vault.hcl

infra/vault/base/vault-auth-delegator.clusterrolebinding.yaml

@@ -0,0 +1,12 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: vault-server-auth-delegator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+  - kind: ServiceAccount
+    name: vault-server
+    namespace: vault

infra/vault/base/vault-deployment.yaml

@@ -0,0 +1,79 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: vault
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app: vault
+  template:
+    metadata:
+      labels:
+        app: vault
+    spec:
+      serviceAccountName: vault-server
+      containers:
+        - name: vault
+          image: hashicorp/vault:1.18
+          command:
+            - /bin/sh
+            - -ec
+          env:
+            - name: VAULT_ADDR
+              value: http://127.0.0.1:8200
+            - name: VAULT_TOKEN
+              valueFrom:
+                secretKeyRef:
+                  name: vault-transit-seal
+                  key: VAULT_TRANSIT_SEAL_TOKEN
+          args:
+            - |
+              cp /vault/config/vault.hcl /tmp/vault.hcl
+              exec vault server -config=/tmp/vault.hcl
+          ports:
+            - containerPort: 8200
+              name: http
+            - containerPort: 8201
+              name: cluster
+          volumeMounts:
+            - name: vault-config
+              mountPath: /vault/config
+              readOnly: true
+            - name: vault-data
+              mountPath: /vault/data
+          readinessProbe:
+            exec:
+              command:
+                - sh
+                - -c
+                - vault status -address=http://127.0.0.1:8200 >/dev/null 2>&1; code=$?; [ "$code" -eq 0 ] || [ "$code" -eq 2 ]
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 5
+          livenessProbe:
+            exec:
+              command:
+                - sh
+                - -c
+                - vault status -address=http://127.0.0.1:8200 >/dev/null 2>&1; code=$?; [ "$code" -eq 0 ] || [ "$code" -eq 2 ]
+            initialDelaySeconds: 20
+            periodSeconds: 15
+            timeoutSeconds: 5
+          resources:
+            requests:
+              cpu: 100m
+              memory: 256Mi
+            limits:
+              cpu: 500m
+              memory: 512Mi
+      volumes:
+        - name: vault-config
+          configMap:
+            name: vault-config
+            defaultMode: 0555
+        - name: vault-data
+          persistentVolumeClaim:
+            claimName: vault-data

infra/vault/base/vault-pvc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: vault-data
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Gi

infra/vault/base/vault-service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: vault
+spec:
+  selector:
+    app: vault
+  ports:
+    - name: http
+      port: 8200
+      targetPort: 8200
+    - name: cluster
+      port: 8201
+      targetPort: 8201
+  type: ClusterIP

infra/vault/base/vault-serviceaccount.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: vault-server

infra/vault/overlays/dev/kustomization.yaml

@@ -0,0 +1,9 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: vault
+
+resources:
+  - ../../base
+  - namespace.yaml
+  - networkpolicy.yaml

infra/vault/overlays/dev/namespace.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: vault
+  labels:
+    pod-security.kubernetes.io/enforce: baseline
+    pod-security.kubernetes.io/enforce-version: latest
+    pod-security.kubernetes.io/warn: restricted
+    pod-security.kubernetes.io/warn-version: latest
+    pod-security.kubernetes.io/audit: restricted
+    pod-security.kubernetes.io/audit-version: latest

infra/vault/overlays/dev/networkpolicy.yaml

@@ -0,0 +1,140 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-server-default-deny
+spec:
+  podSelector:
+    matchLabels:
+      app: vault
+  policyTypes:
+    - Ingress
+    - Egress
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-server-allow-dns-egress
+spec:
+  podSelector:
+    matchLabels:
+      app: vault
+  policyTypes:
+    - Egress
+  egress:
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: kube-system
+          podSelector:
+            matchLabels:
+              k8s-app: kube-dns
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-server-allow-transit-egress
+spec:
+  podSelector:
+    matchLabels:
+      app: vault
+  policyTypes:
+    - Egress
+  egress:
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: vault-transit
+          podSelector:
+            matchLabels:
+              app: vault-transit
+      ports:
+        - protocol: TCP
+          port: 8200
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-server-allow-postgres-egress
+spec:
+  podSelector:
+    matchLabels:
+      app: vault
+  policyTypes:
+    - Egress
+  egress:
+    - to:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: platform
+          podSelector:
+            matchLabels:
+              app: postgres
+      ports:
+        - protocol: TCP
+          port: 5432
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-server-allow-kubernetes-api-egress
+spec:
+  podSelector:
+    matchLabels:
+      app: vault
+  policyTypes:
+    - Egress
+  egress:
+    - to:
+        - ipBlock:
+            cidr: 10.43.0.1/32
+      ports:
+        - protocol: TCP
+          port: 443
+    - to:
+        - ipBlock:
+            cidr: 10.208.141.98/32
+      ports:
+        - protocol: TCP
+          port: 6443
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-server-allow-ingress-from-workloads
+spec:
+  podSelector:
+    matchLabels:
+      app: vault
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: auth-dev
+        - namespaceSelector:
+            matchLabels:
+              kubernetes.io/metadata.name: platform
+      ports:
+        - protocol: TCP
+          port: 8200
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: vault-agent-injector-webhook-ingress
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: vault-agent-injector
+  policyTypes:
+    - Ingress
+  ingress:
+    - ports:
+        - protocol: TCP
+          port: 8080

infra/vault/overlays/prod/kustomization.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: vault-prod
+
+resources:
+  - ../../base
+  - namespace.yaml

infra/vault/overlays/prod/namespace.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: vault-prod
+  labels:
+    pod-security.kubernetes.io/enforce: baseline
+    pod-security.kubernetes.io/enforce-version: latest
+    pod-security.kubernetes.io/warn: restricted
+    pod-security.kubernetes.io/warn-version: latest
+    pod-security.kubernetes.io/audit: restricted
+    pod-security.kubernetes.io/audit-version: latest