Kubernetes Istio

preStop:
  exec:
    command:
      - sleep
      - "30"

- name: sigsci-agent
    image: signalsciences/sigsci-agent:x.xx.x
    imagePullPolicy: IfNotPresent
    ...

- name: sigsci-agent
    image: signalsciences/sigsci-agent:testing
    imagePullPolicy: Never
...

env:
  - name: SIGSCI_ACCESSKEYID
    valueFrom:
      secretKeyRef:
        # Update my-site-name-here to the correct site (workspace) name or similar identifier
        name: sigsci.my-site-name-here
        key: accesskeyid
  - name: SIGSCI_SECRETACCESSKEY
    valueFrom:
      secretKeyRef:
        # Update my-site-name-here to the correct site (workspace) name or similar identifier
        name: sigsci.my-site-name-here
        key: secretaccesskey

apiVersion: v1
kind: Secret
metadata:
  name: sigsci.my-site-name-here
stringData:
  accesskeyid: 12345678-abcd-1234-abcd-1234567890ab
  secretaccesskey: abcdefg_hijklmn_opqrstuvwxy_z0123456789ABCD

volumes:
  - name: sigsci-tmp
    emptyDir: {}

volumeMounts:
  - name: sigsci-tmp
    mountPath: /sigsci/tmp

apiVersion: v1
kind: Service
metadata:
  name: sigsci-agent
  labels:
    app: sigsci-agent
spec:
  ports:
  - name: grpc
    port: 9999
    targetPort: 9999
  selector:
    app: sigsci-agent
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: sigsci-agent
spec:
  replicas: 1
  selector:
    matchLabels:
      app: sigsci-agent
  template:
    metadata:
      labels:
        app: sigsci-agent
    spec:
      containers:
      - name: sigsci-agent
        image: signalsciences/sigsci-agent:latest
        imagePullPolicy: IfNotPresent
        # Configure the agent to use Envoy gRPC on port 9999
        env:
        - name: SIGSCI_ACCESSKEYID
          valueFrom:
            secretKeyRef:
              # This secret needs added (see docs on sigsci secrets)
              name: sigsci-agent-accesskey
              key: accesskeyid
        - name: SIGSCI_SECRETACCESSKEY
          valueFrom:
            secretKeyRef:
              # This secret needs added (see docs on sigsci secrets)
              name: sigsci-agent-accesskey
              key: secretaccesskey
        # Configure the Envoy to expect response data (if using a gRPC access log config for Envoy)
        - name: SIGSCI_ENVOY_EXPECT_RESPONSE_DATA
          value: "1"
        - name: SIGSCI_ENVOY_GRPC_ADDRESS
          value: :9999
        ports:
        - containerPort: 9999
        securityContext:
          # The sigsci-agent container should run with its root filesystem read only
          readOnlyRootFilesystem: true
---

data:
  mesh: |-
    # Add the following content to define the external authorizers.
    extensionProviders:
      - name: "sigsci-agent-ext-authz"
        envoyExtAuthzGrpc:
          service: "sigsci-agent.foo.svc.cluster.local"
          port: "9999"
          timeout: 0.2s
          failOpen: true
          includeRequestBodyInCheck:
            packAsBytes: true
            # use `allowPartialMessage: false` if you want to inspect larger payloads
            allowPartialMessage: true
            maxRequestBytes: 8192
      - name: "sigsci-agent-access-log"
        envoyHttpAls:
          service: "sigsci-agent.foo.svc.cluster.local"
          port: "9999"
          additionalRequestHeadersToLog:
          - "x-sigsci-request-id"
          - "x-sigsci-waf-response"
          - "accept"
          - "content-type"
          - "content-length"
          additionalResponseHeadersToLog:
          - "date"
          - "server"
          - "content-type"
          - "content-length"

apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
  name: ext-authz
spec:
  selector:
    matchLabels:
      app: httpbin
  action: CUSTOM
  provider:
    # The provider name must match the extension provider defined in the mesh config.
    name: sigsci-agent-ext-authz
  rules:
    # The rules specify when to trigger the external authorizer.
    - to:
      - operation:
          paths: ["/headers"]

# kubectl apply -f logging.yaml
apiVersion: telemetry.istio.io/v1alpha1
kind: Telemetry
metadata:
  name: mesh-default
  namespace: istio-system
spec:
  accessLogging:
    - providers:
      - name: sigsci-agent-access-log

...
      containers:
      # Example helloworld app running on port 8000 without sigsci configured
      - name: helloworld
        image: signalsciences/example-helloworld:latest
        imagePullPolicy: IfNotPresent
        args:
        # Address for the app to listen on
        - localhost:8080
        ports:
        - containerPort: 8080
      # Next-Gen WAF agent running in Envoy gRPC mode (SIGSCI_ENVOY_GRPC_ADDRESS configured)
      - name: sigsci-agent
        image: signalsciences/sigsci-agent:latest
        imagePullPolicy: IfNotPresent
        # Configure the agent to use Envoy gRPC on port 9999
        env:
        - name: SIGSCI_ACCESSKEYID
          valueFrom:
            secretKeyRef:
              # This secret needs added (see docs on sigsci secrets)
              name: sigsci.my-site-name-here
              key: accesskeyid
        - name: SIGSCI_SECRETACCESSKEY
          valueFrom:
            secretKeyRef:
              # This secret needs added (see docs on sigsci secrets)
              name: sigsci.my-site-name-here
              key: secretaccesskey
        # Configure the Envoy to expect response data (if using a gRPC access log config for Envoy)
        - name: SIGSCI_ENVOY_EXPECT_RESPONSE_DATA
          value: "1"
        # Configure the Envoy gRPC listener address on any unused port
        - name: SIGSCI_ENVOY_GRPC_ADDRESS
          value: localhost:9999
        ports:
        - containerPort: 9999
        securityContext:
          # The sigsci-agent container should run with its root filesystem read only
          readOnlyRootFilesystem: true

...
      volumes:
      # Define a volume where sigsci-agent will write temp data and share the socket file,
      # which is required with the root filesystem is mounted read only
      - name: sigsci-tmp
        emptyDir: {}

# The following adds the required Envoy configuration into the istio-proxy configuration
apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  # This needs adjusted to be the app name protected by sigsci
  name: helloworld
spec:
  workloadSelector:
    labels:
      # This needs adjusted to be the app name protected by sigsci
      app: helloworld

  # Patch the Envoy configuration, adding in the required sigsci config
  configPatches:

  # Adds the ext_authz HTTP filter for the sigsci-agent ext_authz API
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_INBOUND
      listener:
        name: virtualInbound
        filterChain:
          filter:
            name: "envoy.filters.network.http_connection_manager"
    patch:
      operation: INSERT_BEFORE
      value:
        # Configure the ext_authz filter here:
        name: envoy.filters.http.ext_authz
        typed_config:
          "@type": "type.googleapis.com/envoy.extensions.filters.http.ext_authz.v3.ExtAuthz"
          transport_api_version: "V3"
          grpc_service:
            # NOTE: *SHOULD* use envoy_grpc as ext_authz can use dynamic clusters and has connection pooling
            envoy_grpc:
              cluster_name: sigsci-agent-grpc
            timeout: 0.2s
          failure_mode_allow: true
          with_request_body:
            max_request_bytes: 8192
            allow_partial_message: true

  # Adds the access_log entry for the sigsci-agent http_grpc_access_log API
  - applyTo: NETWORK_FILTER
    match:
      context: SIDECAR_INBOUND
      listener:
        name: virtualInbound
        filterChain:
          filter:
            name: "envoy.filters.network.http_connection_manager"
    patch:
      operation: MERGE
      value:
        name: "envoy.filters.network.http_connection_manager"
        typed_config:
          "@type": "type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager"
          access_log:
          # Configure the envoy.http_grpc_access_log here:
          - name: "envoy.http_grpc_access_log"
            typed_config:
              "@type": "type.googleapis.com/envoy.extensions.access_loggers.grpc.v3.HttpGrpcAccessLogConfig"
              common_config:
                log_name: "sigsci-agent-grpc"
                transport_api_version: "V3"
                grpc_service:
                  # NOTE: *MUST* use google_grpc as envoy_grpc cannot handle a dynamic cluster for ALS (yet)
                  google_grpc:
                    # The address *MUST* be 127.0.0.1 so that communication is intra-pod
                    # Configure the sigsci-agent port number here:
                    target_uri: 127.0.0.1:9999
                    stat_prefix: "sigsci-agent"
                  timeout: 0.2s
              additional_request_headers_to_log:
              # These are required:
              - "x-sigsci-request-id"
              - "x-sigsci-waf-response"
              # These are additional you want recorded:
              - "accept"
              - "content-type"
              - "content-length"
              additional_response_headers_to_log:
              # These are additional you want recorded:
              - "date"
              - "server"
              - "content-type"
              - "content-length"

  # Adds a dynamic cluster for the sigsci-agent via CDS for sigsci-agent ext_authz API
  - applyTo: CLUSTER
    patch:
      operation: ADD
      value:
        name: sigsci-agent-grpc
        type: STRICT_DNS
        connect_timeout: 0.5s
        http2_protocol_options: {}
        load_assignment:
          cluster_name: sigsci-agent-grpc
          endpoints:
          - lb_endpoints:
            - endpoint:
                address:
                  socket_address:
                    # The address *MUST* be 127.0.0.1 so that communication is intra-pod
                    address: 127.0.0.1
                    # Configure the agent port here:
                    port_value: 9999