Merge "Single K8S Node Of Deploying SDNC Cluster POC"

1 files changed, 193 insertions, 0 deletions

diff --git a/kubernetes/sdnc/templates/db-statefulset.yaml b/kubernetes/sdnc/templates/db-statefulset.yaml
new file mode 100644
index 0000000000..f2e079d76e
--- /dev/null
+++ b/kubernetes/sdnc/templates/db-statefulset.yaml
@@ -0,0 +1,193 @@
+#{{ if not .Values.disableSdncSdncDbhost }}
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: sdnc-dbhost
+  namespace: "{{ .Values.nsPrefix }}-sdnc"
+spec:
+  serviceName: "dbhost"
+  replicas: {{ .Values.numberOfDbReplicas }}
+  selector:
+    matchLabels:
+      app: sdnc-dbhost
+  template:
+    metadata:
+      labels:
+        app: sdnc-dbhost
+      name: sdnc-dbhost
+    spec:
+      initContainers:
+      - name: init-mysql
+        image: {{ .Values.image.mysql }}
+        imagePullPolicy: {{ .Values.pullPolicy }}
+        command:
+        - bash
+        - "-c"
+        - |
+          set -ex
+          # Generate mysql server-id from pod ordinal index.
+          [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+          ordinal=${BASH_REMATCH[1]}
+          echo BASH_REMATCH=${BASH_REMATCH}
+          echo [mysqld] > /mnt/conf.d/server-id.cnf
+          # Add an offset to avoid reserved server-id=0 value.
+          echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf
+          # Copy appropriate conf.d files from config-map to emptyDir.
+          if [[ $ordinal -eq 0 ]]; then
+            cp /mnt/config-map/master.cnf /mnt/conf.d/
+          else
+            cp /mnt/config-map/slave.cnf /mnt/conf.d/
+          fi
+        volumeMounts:
+        - name: conf
+          mountPath: /mnt/conf.d
+        - name: config-map
+          mountPath: /mnt/config-map
+      - name: clone-mysql
+        image: {{ .Values.image.xtrabackup }}
+        env:
+        - name: MYSQL_ROOT_PASSWORD
+          value: openECOMP1.0
+        command:
+        - bash
+        - "-c"
+        - |
+          set -ex
+          # Skip the clone if data already exists.
+          [[ -d /var/lib/mysql/mysql ]] && exit 0
+          # Skip the clone on master (ordinal index 0).
+          [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+          ordinal=${BASH_REMATCH[1]}
+          echo ${BASH_REMATCH}
+          [[ $ordinal -eq 0 ]] && exit 0
+          # Clone data from previous peer.
+          ncat --recv-only sdnc-dbhost-$(($ordinal-1)).dbhost.{{ .Values.nsPrefix }}-sdnc 3307 | xbstream -x -C /var/lib/mysql
+          # Prepare the backup.
+          xtrabackup --user=root --password=$MYSQL_ROOT_PASSWORD --prepare --target-dir=/var/lib/mysql
+          ls -l /var/lib/mysql
+        volumeMounts:
+        - name: sdnc-data
+          mountPath: /var/lib/mysql
+          subPath: mysql
+        - name: conf
+          mountPath: /etc/mysql/conf.d
+      containers:
+      - env:
+        - name: MYSQL_ROOT_PASSWORD
+          value: openECOMP1.0
+        - name: MYSQL_ROOT_HOST
+          value: '%'
+        - name: MYSQL_ALLOW_EMPTY_PASSWORD
+          value: "0"
+        image: {{ .Values.image.mysql }}
+        imagePullPolicy: {{ .Values.pullPolicy }}
+        name: sdnc-db-container
+        volumeMounts:
+        - mountPath: /var/lib/mysql
+          name: sdnc-data
+          subPath: mysql
+        - name: conf
+          mountPath: /etc/mysql/conf.d
+        ports:
+        - containerPort: 3306
+        resources:
+          requests:
+            cpu: 500m
+            memory: 1Gi
+        livenessProbe:
+          exec:
+            command: ["mysqladmin", "ping"]
+          initialDelaySeconds: 30
+          periodSeconds: 10
+          timeoutSeconds: 5
+        readinessProbe:
+          tcpSocket:
+            port: 3306
+          initialDelaySeconds: 5
+          periodSeconds: 10
+      - name: xtrabackup
+        image: {{ .Values.image.xtrabackup }}
+        env:
+        - name: MYSQL_ROOT_PASSWORD
+          value: openECOMP1.0
+        ports:
+        - name: xtrabackup
+          containerPort: 3307
+        command:
+        - bash
+        - "-c"
+        - |
+          set -ex
+          cd /var/lib/mysql
+          ls -l
+          # Determine binlog position of cloned data, if any.
+          if [[ -f xtrabackup_slave_info ]]; then
+            echo "Inside xtrabackup_slave_info"
+            # XtraBackup already generated a partial "CHANGE MASTER TO" query
+            # because we're cloning from an existing slave.
+            mv xtrabackup_slave_info change_master_to.sql.in
+            # Ignore xtrabackup_binlog_info in this case (it's useless).
+            rm -f xtrabackup_binlog_info
+          elif [[ -f xtrabackup_binlog_info ]]; then
+            echo "Inside xtrabackup_binlog_info"
+            # We're cloning directly from master. Parse binlog position.
+            [[ `cat xtrabackup_binlog_info` =~ ^(.*?)[[:space:]]+(.*?)$ ]] || exit 1
+            rm xtrabackup_binlog_info
+            echo "CHANGE MASTER TO MASTER_LOG_FILE='${BASH_REMATCH[1]}',\
+                  MASTER_LOG_POS=${BASH_REMATCH[2]}" > change_master_to.sql.in
+          fi
+
+          # Check if we need to complete a clone by starting replication.
+          if [[ -f change_master_to.sql.in ]]; then
+            echo "Waiting for mysqld to be ready (accepting connections)"
+            [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
+            ordinal=${BASH_REMATCH[1]}
+            echo $ordinal
+            until mysql --user=root --password=$MYSQL_ROOT_PASSWORD -h 127.0.0.1 -e "SELECT 1"; do sleep 1; done
+
+            echo "Initializing replication from clone position"
+            # In case of container restart, attempt this at-most-once.
+            mv change_master_to.sql.in change_master_to.sql.orig
+            mysql --user=root --password=$MYSQL_ROOT_PASSWORD -h 127.0.0.1 <<EOF
+          $(<change_master_to.sql.orig),
+            MASTER_HOST="sdnc-dbhost-0.dbhost.{{ .Values.nsPrefix }}-sdnc",
+            MASTER_USER="root",
+            MASTER_PASSWORD="$MYSQL_ROOT_PASSWORD",
+            MASTER_CONNECT_RETRY=10;
+          START SLAVE;
+          EOF
+          fi
+
+          # Start a server to send backups when requested by peers.
+          exec ncat --listen --keep-open --send-only --max-conns=1 3307 -c \
+            "xtrabackup --user=root --password=$MYSQL_ROOT_PASSWORD --backup --slave-info --stream=xbstream --host=127.0.0.1"
+        volumeMounts:
+        - name: sdnc-data
+          mountPath: /var/lib/mysql
+          subPath: mysql
+        - name: conf
+          mountPath: /etc/mysql/conf.d
+        resources:
+          requests:
+            cpu: 100m
+            memory: 100Mi
+      volumes:
+      - name: conf
+        emptyDir: {}
+      - name: config-map
+        configMap:
+          name: mysql
+      - name: localtime
+        hostPath:
+          path: /etc/localtime
+  volumeClaimTemplates:
+  - metadata:
+      name: sdnc-data
+      annotations:
+        volume.beta.kubernetes.io/storage-class: "{{ .Values.nsPrefix }}-sdnc-data"
+    spec:
+      accessModes: ["ReadWriteMany"]
+      resources:
+        requests:
+          storage: 1Gi
+#{{ end }}