diff --git a/apps/emqx_gateway/src/emqx_gateway_schema.erl b/apps/emqx_gateway/src/emqx_gateway_schema.erl
index 70528d2bc..3811d56c6 100644
--- a/apps/emqx_gateway/src/emqx_gateway_schema.erl
+++ b/apps/emqx_gateway/src/emqx_gateway_schema.erl
@@ -297,7 +297,7 @@ sc_meta(Type, Meta) ->
     hoconsc:mk(Type, Meta).
 
 map(Name, Type) ->
-    hoconsc: map(Name, Type).
+    hoconsc:map(Name, Type).
 
 ref(StructName) ->
     ref(?MODULE, StructName).
diff --git a/bin/emqx b/bin/emqx
index e6cd421f1..db3c8a798 100755
--- a/bin/emqx
+++ b/bin/emqx
@@ -355,6 +355,16 @@ case "$1" in
         ;;
 esac
 
+IS_NO_CONNECTION_COMMAND='no'
+case "$1" in
+    cold_eval)
+        IS_NO_CONNECTION_COMMAND='yes'
+        ;;
+    *)
+        ;;
+esac
+
+
 ## Possible ways to configure emqx node name:
 ## 1. configure node.name in emqx.conf
 ## 2. override with environment variable EMQX_NODE_NAME
@@ -362,18 +372,17 @@ esac
 ## or long name (with '@') e.g. 'emqx@example.net' or 'emqx@127.0.0.1'
 NAME="${EMQX_NODE_NAME:-}"
 if [ -z "$NAME" ]; then
-    if [ "$IS_BOOT_COMMAND" = 'no' ]; then
+    if [ "$IS_BOOT_COMMAND" = 'yes' ]; then
+        # for boot commands, inspect emqx.conf for node name
+        NAME="$(call_hocon -s $SCHEMA_MOD -c "$RUNNER_ETC_DIR"/emqx.conf get node.name | tr -d \")"
+    elif [ "$IS_NO_CONNECTION_COMMAND" = 'yes' ]; then
+        # this command requires no connection to the target beam node, do nothing
+        :
+    else
         # for non-boot commands, inspect vm.<time>.args for node name
         # shellcheck disable=SC2012,SC2086
         LATEST_VM_ARGS="$(ls -t $CONFIGS_DIR/vm.*.args | head -1)"
-        if [ -z "$LATEST_VM_ARGS" ]; then
-            echoerr "no_vm_arg_file_found_for $1 in $CONFIGS_DIR/"
-            exit 1
-        fi
         NAME="$(grep -E '^-s?name' "$LATEST_VM_ARGS" | awk '{print $2}')"
-    else
-        # for boot commands, inspect emqx.conf for node name
-        NAME="$(call_hocon -s $SCHEMA_MOD -c "$RUNNER_ETC_DIR"/emqx.conf get node.name | tr -d \")"
     fi
 fi
 
@@ -396,13 +405,12 @@ COOKIE="${EMQX_NODE_COOKIE:-}"
 if [ -z "$COOKIE" ]; then
     if [ "$IS_BOOT_COMMAND" = 'yes' ]; then
         COOKIE="$(call_hocon -s $SCHEMA_MOD -c "$RUNNER_ETC_DIR"/emqx.conf get node.cookie | tr -d \")"
+    elif [ "$IS_NO_CONNECTION_COMMAND" = 'yes' ]; then
+        # this command requires no connection to the target beam node, do nothing
+        COOKIE="whatever"
     else
         # shellcheck disable=SC2012,SC2086
         LATEST_VM_ARGS="$(ls -t $CONFIGS_DIR/vm.*.args | head -1)"
-        if [ -z "$LATEST_VM_ARGS" ]; then
-            echoerr "no_vm_arg_file_found_for $1 in $CONFIGS_DIR/"
-            exit 1
-        fi
         COOKIE="$(grep -E '^-setcookie' "$LATEST_VM_ARGS" | awk '{print $2}')"
     fi
 fi
diff --git a/build b/build
index 481249b7c..e73b083f7 100755
--- a/build
+++ b/build
@@ -62,6 +62,13 @@ log() {
     echo "===< $msg"
 }
 
+docgen() {
+    local conf_doc
+    conf_doc="$(pwd)/_build/${PROFILE}/rel/emqx/etc/emqx-config-doc.html"
+    echo "===< Generating config document $conf_doc"
+	./_build/"$PROFILE"/rel/emqx/bin/emqx cold_eval "file:write_file('$conf_doc', hocon_schema_html:gen(emqx_machine_schema, \"EMQ X ${PKG_VSN}\"))"
+}
+
 make_rel() {
     # shellcheck disable=SC1010
     ./rebar3 as "$PROFILE" do release,tar
@@ -69,10 +76,7 @@ make_rel() {
         echo "gpb should not be included in the release"
         exit 1
     fi
-    local conf_doc
-    conf_doc="$(pwd)/_build/${PROFILE}/rel/emqx/etc/emqx-config-doc.html"
-    echo "===< Generating config document $conf_doc"
-	./_build/"$PROFILE"/rel/emqx/bin/emqx cold_eval "file:write_file('$conf_doc', hocon_schema_html:gen(emqx_machine_schema, \"EMQ X ${PKG_VSN}\"))"
+    docgen
 }
 
 ## unzip previous version .zip files to _build/$PROFILE/rel/emqx/releases before making relup