CockroachDB deployment:

- updated instructions
- file cleanup

manifests/cockroachdb/README.md

-# Ref: https://www.cockroachlabs.com/docs/stable/configure-cockroachdb-kubernetes.html
+# CockroachDB configuration preparation
+
+These steps reproduce how to generate Cockroach manifest files used in TeraFlowSDN and apply them to MicroK8s.
+For stability reasons, we fix the versions providing the manifest files.
+In future releases of TeraFlowSDN, we might consider dynamically downloading and modifying the files.
+
+- Ref: https://www.cockroachlabs.com/docs/stable/configure-cockroachdb-kubernetes.html
+
+## Steps:
 
 DEPLOY_PATH="manifests/cockroachdb"
 OPERATOR_BASE_URL="https://raw.githubusercontent.com/cockroachdb/cockroach-operator/master"
@@ -12,8 +20,9 @@ kubectl apply -f "${DEPLOY_PATH}/crds.yaml"
 # Deploy CockroachDB Operator
 curl -o "${DEPLOY_PATH}/operator.yaml" "${OPERATOR_BASE_URL}/install/operator.yaml"
 nano "${DEPLOY_PATH}/operator.yaml"
-# - add env var: WATCH_NAMESPACE='crdb'
-kubectl apply -f "${DEPLOY_PATH}/operator.yaml"
+# - add env var: WATCH_NAMESPACE=%TFS_CRDB_NAMESPACE%
+sed s/%TFS_CRDB_NAMESPACE%/crdb/g ${DEPLOY_PATH}/operator.yaml > ${DEPLOY_PATH}/tfs_crdb_operator.yaml
+kubectl apply -f "${DEPLOY_PATH}/tfs_crdb_operator.yaml"
 
 # Deploy CockroachDB
 curl -o "${DEPLOY_PATH}/cluster.yaml" "${OPERATOR_BASE_URL}/examples/example.yaml"

manifests/cockroachdb/from_carlos/cluster-init.yaml

-# Generated file, DO NOT EDIT. Source: cloud/kubernetes/templates/cluster-init.yaml
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: cluster-init
-  labels:
-    app: cockroachdb
-spec:
-  template:
-    spec:
-      containers:
-      - name: cluster-init
-        image: cockroachdb/cockroach:v22.1.6
-        imagePullPolicy: IfNotPresent
-        command:
-          - "/cockroach/cockroach"
-          - "init"
-          - "--insecure"
-          - "--host=cockroachdb-0.cockroachdb"
-      restartPolicy: OnFailure

manifests/cockroachdb/from_carlos/cockroachdb-statefulset.yaml

-# Generated file, DO NOT EDIT. Source: cloud/kubernetes/templates/cockroachdb-statefulset.yaml
-apiVersion: v1
-kind: Service
-metadata:
-  # This service is meant to be used by clients of the database. It exposes a ClusterIP that will
-  # automatically load balance connections to the different database pods.
-  name: cockroachdb-public
-  labels:
-    app: cockroachdb
-spec:
-  ports:
-  # The main port, served by gRPC, serves Postgres-flavor SQL, internode
-  # traffic and the cli.
-  - port: 26257
-    targetPort: 26257
-    name: grpc
-  # The secondary port serves the UI as well as health and debug endpoints.
-  - port: 8080
-    targetPort: 8080
-    name: http
-  selector:
-    app: cockroachdb
----
-apiVersion: v1
-kind: Service
-metadata:
-  # This service only exists to create DNS entries for each pod in the stateful
-  # set such that they can resolve each other's IP addresses. It does not
-  # create a load-balanced ClusterIP and should not be used directly by clients
-  # in most circumstances.
-  name: cockroachdb
-  labels:
-    app: cockroachdb
-  annotations:
-    # Use this annotation in addition to the actual publishNotReadyAddresses
-    # field below because the annotation will stop being respected soon but the
-    # field is broken in some versions of Kubernetes:
-    # https://github.com/kubernetes/kubernetes/issues/58662
-    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
-    # Enable automatic monitoring of all instances when Prometheus is running in the cluster.
-    prometheus.io/scrape: "true"
-    prometheus.io/path: "_status/vars"
-    prometheus.io/port: "8080"
-spec:
-  ports:
-  - port: 26257
-    targetPort: 26257
-    name: grpc
-  - port: 8080
-    targetPort: 8080
-    name: http
-  # We want all pods in the StatefulSet to have their addresses published for
-  # the sake of the other CockroachDB pods even before they're ready, since they
-  # have to be able to talk to each other in order to become ready.
-  publishNotReadyAddresses: true
-  clusterIP: None
-  selector:
-    app: cockroachdb
----
-apiVersion: policy/v1beta1
-kind: PodDisruptionBudget
-metadata:
-  name: cockroachdb-budget
-  labels:
-    app: cockroachdb
-spec:
-  selector:
-    matchLabels:
-      app: cockroachdb
-  maxUnavailable: 1
----
-apiVersion: apps/v1
-kind: StatefulSet
-metadata:
-  name: cockroachdb
-spec:
-  serviceName: "cockroachdb"
-  replicas: 3
-  selector:
-    matchLabels:
-      app: cockroachdb
-  template:
-    metadata:
-      labels:
-        app: cockroachdb
-    spec:
-      affinity:
-        podAntiAffinity:
-          preferredDuringSchedulingIgnoredDuringExecution:
-          - weight: 100
-            podAffinityTerm:
-              labelSelector:
-                matchExpressions:
-                - key: app
-                  operator: In
-                  values:
-                  - cockroachdb
-              topologyKey: kubernetes.io/hostname
-      containers:
-      - name: cockroachdb
-        image: cockroachdb/cockroach:v22.1.6
-        imagePullPolicy: IfNotPresent
-        # TODO: Change these to appropriate values for the hardware that you're running. You can see
-        # the resources that can be allocated on each of your Kubernetes nodes by running:
-        #   kubectl describe nodes
-        # Note that requests and limits should have identical values.
-        resources:
-          requests:
-            cpu: "250m"
-            memory: "1Gi"
-          limits:
-            cpu: "1"
-            memory: "1Gi" 
-        ports:
-        - containerPort: 26257
-          name: grpc
-        - containerPort: 8080
-          name: http
-# We recommend that you do not configure a liveness probe on a production environment, as this can impact the availability of production databases.
-#       livenessProbe:
-#         httpGet:
-#           path: "/health"
-#           port: http
-#         initialDelaySeconds: 30
-#         periodSeconds: 5
-        readinessProbe:
-          httpGet:
-            path: "/health?ready=1"
-            port: http
-          initialDelaySeconds: 10
-          periodSeconds: 5
-          failureThreshold: 2
-        volumeMounts:
-        - name: datadir
-          mountPath: /cockroach/cockroach-data
-        env:
-        - name: COCKROACH_CHANNEL
-          value: kubernetes-insecure
-        - name: GOMAXPROCS
-          valueFrom:
-            resourceFieldRef:
-              resource: limits.cpu
-              divisor: "1"
-        - name: MEMORY_LIMIT_MIB
-          valueFrom:
-            resourceFieldRef:
-              resource: limits.memory
-              divisor: "1Mi"
-        command:
-          - "/bin/bash"
-          - "-ecx"
-          # The use of qualified `hostname -f` is crucial:
-          # Other nodes aren't able to look up the unqualified hostname.
-          - exec
-            /cockroach/cockroach
-            start
-            --logtostderr
-            --insecure
-            --advertise-host $(hostname -f)
-            --http-addr 0.0.0.0
-            --join cockroachdb-0.cockroachdb,cockroachdb-1.cockroachdb,cockroachdb-2.cockroachdb
-            --cache $(expr $MEMORY_LIMIT_MIB / 4)MiB
-            --max-sql-memory $(expr $MEMORY_LIMIT_MIB / 4)MiB
-      # No pre-stop hook is required, a SIGTERM plus some time is all that's
-      # needed for graceful shutdown of a node.
-      terminationGracePeriodSeconds: 60
-      volumes:
-      - name: datadir
-        persistentVolumeClaim:
-          claimName: datadir
-  podManagementPolicy: Parallel
-  updateStrategy:
-    type: RollingUpdate
-  volumeClaimTemplates:
-  - metadata:
-      name: datadir
-    spec:
-      accessModes:
-        - "ReadWriteOnce"
-      resources:
-        requests:
-          storage: 10Gi

manifests/cockroachdb/operator.yaml

@@ -543,7 +543,7 @@ spec:
         - name: OPERATOR_NAME
           value: cockroachdb
         - name: WATCH_NAMESPACE
-          value: crdb
+          value: %TFS_CRDB_NAMESPACE%
         - name: POD_NAME
           valueFrom:
             fieldRef: