diff --git a/common/lib/idds/common/utils.py b/common/lib/idds/common/utils.py
index 3e391805..428fde66 100644
--- a/common/lib/idds/common/utils.py
+++ b/common/lib/idds/common/utils.py
@@ -146,6 +146,8 @@ def get_rest_host():
     """
     Function to get rest host
     """
+    if "IDDS_HOST" in os.environ:
+        return os.environ.get("IDDS_HOST")
     host = config_get('rest', 'host')
     url_prefix = get_rest_url_prefix()
     while host.endswith("/"):
diff --git a/main/lib/idds/agents/conductor/plugins/messaging.py b/main/lib/idds/agents/conductor/plugins/messaging.py
index cce41a02..191830fa 100644
--- a/main/lib/idds/agents/conductor/plugins/messaging.py
+++ b/main/lib/idds/agents/conductor/plugins/messaging.py
@@ -90,17 +90,22 @@ def connect_to_messaging_brokers(self):
         broker_addresses = []
         for b in self.brokers:
             try:
+                if ":" in b:
+                    b, port = b.split(":")
+                else:
+                    port = self.port
+
                 addrinfos = socket.getaddrinfo(b, 0, socket.AF_INET, 0, socket.IPPROTO_TCP)
                 for addrinfo in addrinfos:
                     b_addr = addrinfo[4][0]
-                    broker_addresses.append(b_addr)
+                    broker_addresses.append((b_addr, port))
             except socket.gaierror as error:
                 self.logger.error('Cannot resolve hostname %s: %s' % (b, str(error)))
 
         self.logger.info("Resolved broker addresses: %s" % broker_addresses)
 
-        for broker in broker_addresses:
-            conn = stomp.Connection12(host_and_ports=[(broker, self.port)],
+        for broker, port in broker_addresses:
+            conn = stomp.Connection12(host_and_ports=[(broker, port)],
                                       vhost=self.vhost,
                                       keepalive=True,
                                       timeout=self.broker_timeout)
@@ -157,17 +162,22 @@ def subscribe(self):
         broker_addresses = []
         for b in self.brokers:
             try:
+                if ":" in b:
+                    b, port = b.split(":")
+                else:
+                    port = self.port
+
                 addrinfos = socket.getaddrinfo(b, 0, socket.AF_INET, 0, socket.IPPROTO_TCP)
                 for addrinfo in addrinfos:
                     b_addr = addrinfo[4][0]
-                    broker_addresses.append(b_addr)
+                    broker_addresses.append((b_addr, port))
             except socket.gaierror as error:
                 self.logger.error('Cannot resolve hostname %s: %s' % (b, str(error)))
 
         self.logger.info("Resolved broker addresses: %s" % broker_addresses)
 
-        for broker in broker_addresses:
-            conn = stomp.Connection12(host_and_ports=[(broker, self.port)],
+        for broker, port in broker_addresses:
+            conn = stomp.Connection12(host_and_ports=[(broker, port)],
                                       vhost=self.vhost,
                                       keepalive=True)
             conn.set_listener('message-receiver', self.get_listener(conn.transport._Transport__host_and_ports[0]))
diff --git a/start-daemon.sh b/start-daemon.sh
index 43a0dd86..c37769b3 100755
--- a/start-daemon.sh
+++ b/start-daemon.sh
@@ -10,10 +10,10 @@ export IDDS_HOME=/opt/idds
 if [ -f /etc/grid-security/hostkey.pem ]; then
     echo "host certificate is already created."
     chmod 600 /etc/grid-security/hostkey.pem
-elif [ -f /opt/idds/configmap/hostkey.pem ]; then
-    echo "mount /opt/idds/configmap/hostkey.pem to /etc/grid-security/hostkey.pem"
-    ln -fs /opt/idds/configmap/hostkey.pem /etc/grid-security/hostkey.pem
-    ln -fs /opt/idds/configmap/hostcert.pem /etc/grid-security/hostcert.pem
+elif [ -f /opt/idds/certs/hostkey.pem ]; then
+    echo "mount /opt/idds/certs/hostkey.pem to /etc/grid-security/hostkey.pem"
+    ln -fs /opt/idds/certs/hostkey.pem /etc/grid-security/hostkey.pem
+    ln -fs /opt/idds/certs/hostcert.pem /etc/grid-security/hostcert.pem
     chmod 600 /etc/grid-security/hostkey.pem
 fi