Added option --load-balanced for running in GKE

deploy/gk-deploy

@@ -27,6 +27,8 @@ TEMPLATES=""
 NAMESPACE=""
 WAIT=300
 ABORT=0
+LOAD_BALANCED=0
+SERVICE_TYPE=ClusterIP
 NODES=""
 SKIP_PREREQ=0
 EXISTS_GLUSTERFS=0
@@ -57,7 +59,7 @@ usage() {
        [--daemonset-label <DAEMONSET_LABEL> ] [--single-node] [--no-object]
        [--object-account <ACCOUNT>] [--object-user <USER>]
        [--object-password <PASSWORD>] [--object-sc <STORAGE_CLASS>]
-       [--object-capacity <CAPACITY>] [-l <LOG_FILE>] [--abort] [<TOPOLOGY>]\n"
+       [--object-capacity <CAPACITY>] [--load-balanced] [-l <LOG_FILE>] [--abort] [<TOPOLOGY>]\n"
 }
 
 help_exit() {
@@ -144,6 +146,10 @@ Options:
               The total capacity of the GlusterFS volume which will store the
               object data. Default is '${OBJ_CAPACITY}'.
 
+  --load-balanced
+              Produce a Kubernetes Service of type LoadBalancer (to be used in
+	      GKE or environments where you want access from outside Kubernetes.
+
   -y, --yes
               Skip the pre-requisites prompt.
 
@@ -340,7 +346,7 @@ check() {
       break
     fi
     sleep 2
-    res=$(${CLI} get "${resource}" --no-headers "${select}" 2>/dev/null)
+    res=$(${CLI} get "${resource}" -a --no-headers "${select}" 2>/dev/null)
     if [[ ${s} -ne 0 ]] && [[ ${VERBOSE} -eq 1 ]]; then
       reslines=$(echo "$res" | wc -l)
       ((reslines+=1))
@@ -501,6 +507,11 @@ while [[ $# -ge 1 ]]; do
         ABORT=1
         keypos=$keylen
         ;;
+        -load-balanced*)
+        LOAD_BALANCED=1
+	SERVICE_TYPE=LoadBalancer
+        keypos=$keylen
+        ;;
         h*|-help)
         help_exit
         ;;
@@ -570,6 +581,25 @@ Do you wish to proceed with deployment?
   esac
 fi
 
+if [[ "x${USER_KEY}" == "x" ]] && [[ "${LOAD_BALANCED}" == "1" ]]; then
+  echo "
+LoadBalancer service is selected, but no authentication creedntials have been
+provided. It is generally a good idea to add authentication to a (public)
+load balanced available Heketi API.
+
+Do you wish to proceed installing without credentials?"
+
+  read -rp "[Y]es, [N]o? [Default: N]: " ynopt
+  case $ynopt in
+    Y*|y*)
+    echo ""
+    ;;
+    *)
+    exit
+    ;;
+  esac
+fi
+
 if [[ ! -f ${TOPOLOGY} ]]; then
   echo "Topology File not found!"
   exit 1
@@ -890,7 +920,7 @@ if [[ ${EXISTS_HEKETI} -eq 0 ]]; then
   if [[ "${CLI}" == *oc\ * ]]; then
     eval_output "${CLI} process ${OC_PROCESS_VAL_SWITCH} HEKETI_EXECUTOR=${EXECUTOR} ${OC_PROCESS_VAL_SWITCH} HEKETI_FSTAB=${FSTAB} ${OC_PROCESS_VAL_SWITCH} HEKETI_ADMIN_KEY=${ADMIN_KEY} ${OC_PROCESS_VAL_SWITCH} HEKETI_USER_KEY=${USER_KEY} heketi | ${CLI} create -f - 2>&1"
   else
-    eval_output "sed -e 's/\\\${HEKETI_EXECUTOR}/${EXECUTOR}/' -e 's#\\\${HEKETI_FSTAB}#${FSTAB}#' -e 's/\\\${HEKETI_ADMIN_KEY}/${ADMIN_KEY}/' -e 's/\\\${HEKETI_USER_KEY}/${USER_KEY}/' ${TEMPLATES}/heketi-deployment.yaml | ${CLI} create -f - 2>&1"
+    eval_output "sed -e 's/\\\${HEKETI_EXECUTOR}/${EXECUTOR}/' -e 's#\\\${HEKETI_FSTAB}#${FSTAB}#' -e 's/\\\${HEKETI_ADMIN_KEY}/${ADMIN_KEY}/' -e 's/\\\${HEKETI_USER_KEY}/${USER_KEY}/' -e 's/\\\${SERVICE_TYPE}/${SERVICE_TYPE}/' ${TEMPLATES}/heketi-deployment.yaml | ${CLI} create -f - 2>&1"
   fi
 
   output -n "Waiting for heketi pod to start ... "
@@ -913,7 +943,15 @@ while [[ "x${heketi_service}" == "x" ]] || [[ "${heketi_service}" == "<none>" ]]
   fi
   sleep 1
   ((s+=1))
-  heketi_service=$(${CLI} describe svc/heketi | grep "Endpoints:" | awk '{print $2}')
+  if [[ ${LOAD_BALANCED} -eq 1 ]]; then
+    heketi_lb_address=$(${CLI} describe svc/heketi | awk '/^LoadBalancer Ingress:/{print $NF}')
+    if [ "x${heketi_lb_address}" != "x" ]; then
+      heketi_port=$(${CLI} describe svc/heketi | awk '/^Port:/{print $NF}' | cut -d/ -f1)
+      heketi_service=${heketi_lb_address}:${heketi_port}
+    fi
+  else
+    heketi_service=$(${CLI} describe svc/deploy-heketi | grep "Endpoints:" | awk '{print $2}')
+  fi
 done
 
 heketi_pod=$(${CLI} get pod --no-headers --show-all --selector="heketi" | awk '{print $1}')

deploy/kube-templates/heketi-deployment.yaml

@@ -11,6 +11,7 @@ metadata:
 spec:
   selector:
     glusterfs: heketi-pod
+  type: ${SERVICE_TYPE}
   ports:
   - name: heketi
     port: 8080