Register GCP nodes with repmgr

bin/database-wrangler/steps_production

@@ -151,6 +151,18 @@ function check-gcp-candidate-master-is-master(){
 }
 
 function enable-automatic-failover-on-gcp-only(){
+  echo "Register $GCP_MASTER_CANDIDATE as master with repmgr"
+  ssh_remote "$GCP_MASTER_CANDIDATE" sudo gitlab-ctl repmgr register master
+  for host in "${GCP_HOSTS[@]}"
+  do
+    if [ "$GCP_MASTER_CANDIDATE" == "$host" ]
+    then
+      continue;
+    fi
+    echo "Register $host as standby with repmgr"
+    ssh_remote "$host" sudo gitlab-ctl repmgr register standby
+  done
+
   echo "Starting repmgrd on $GCP_MASTER_CANDIDATE"
   ssh_remote "$GCP_MASTER_CANDIDATE" sudo sv stop /opt/gitlab/sv/repmgrd
   for host in "${GCP_HOSTS[@]}"