diff --git a/.github/workflows/run_cts_tests.yaml b/.github/workflows/run_cts_tests.yaml
index 9126d97ac..bfa1d1394 100644
--- a/.github/workflows/run_cts_tests.yaml
+++ b/.github/workflows/run_cts_tests.yaml
@@ -46,6 +46,7 @@ jobs:
       - name: run test cases
         run: |
           export CUTTLEFISH_ENV_OVERRIDE_PREFIX=EMQX_
+          export HOCON_ENV_OVERRIDE_PREFIX=EMQX_
           printenv > .env
           docker exec -i erlang sh -c "make ensure-rebar3"
           docker exec -i erlang sh -c "./rebar3 eunit --application=emqx_auth_ldap"
@@ -115,6 +116,7 @@ jobs:
       - name: run test cases
         run: |
           export CUTTLEFISH_ENV_OVERRIDE_PREFIX=EMQX_
+          export HOCON_ENV_OVERRIDE_PREFIX=EMQX_
           printenv > .env
           docker exec -i erlang sh -c "make ensure-rebar3"
           docker exec -i erlang sh -c "./rebar3 eunit --application=emqx_auth_mongo"
@@ -197,6 +199,7 @@ jobs:
       - name: run test cases
         run: |
           export CUTTLEFISH_ENV_OVERRIDE_PREFIX=EMQX_
+          export HOCON_ENV_OVERRIDE_PREFIX=EMQX_
           printenv > .env
           docker exec -i erlang sh -c "make ensure-rebar3"
           docker exec -i erlang sh -c "./rebar3 eunit --application=emqx_auth_mysql"
@@ -270,7 +273,8 @@ jobs:
           export EMQX_AUTH__PGSQL__USERNAME=root \
                  EMQX_AUTH__PGSQL__PASSWORD=public \
                  EMQX_AUTH__PGSQL__DATABASE=mqtt \
-                 CUTTLEFISH_ENV_OVERRIDE_PREFIX=EMQX_
+                 CUTTLEFISH_ENV_OVERRIDE_PREFIX=EMQX_ \
+                 HOCON_ENV_OVERRIDE_PREFIX=EMQX_
           printenv > .env
           docker exec -i erlang sh -c "make ensure-rebar3"
           docker exec -i erlang sh -c "./rebar3 eunit --application=emqx_auth_pgsql"
diff --git a/.github/workflows/run_fvt_tests.yaml b/.github/workflows/run_fvt_tests.yaml
index de7b475a6..035c0d0e3 100644
--- a/.github/workflows/run_fvt_tests.yaml
+++ b/.github/workflows/run_fvt_tests.yaml
@@ -37,6 +37,7 @@ jobs:
           run: |
             set -e -u -x
             echo "CUTTLEFISH_ENV_OVERRIDE_PREFIX=EMQX_" >> .ci/docker-compose-file/conf.cluster.env
+            echo "HOCON_ENV_OVERRIDE_PREFIX=EMQX_" >> .ci/docker-compose-file/conf.cluster.env
             echo "EMQX_ZONE__EXTERNAL__RETRY_INTERVAL=2s" >> .ci/docker-compose-file/conf.cluster.env
             echo "EMQX_MQTT__MAX_TOPIC_ALIAS=10" >> .ci/docker-compose-file/conf.cluster.env
             docker-compose \
diff --git a/apps/emqx/src/emqx_schema.erl b/apps/emqx/src/emqx_schema.erl
index 2ad3d8829..316f4b77c 100644
--- a/apps/emqx/src/emqx_schema.erl
+++ b/apps/emqx/src/emqx_schema.erl
@@ -105,14 +105,14 @@ fields("rlog") ->
     ];
 
 fields("node") ->
-    [ {"name", t(string(), "vm_args.-name", "emqx@127.0.0.1", "NODE_NAME")}
+    [ {"name", t(string(), "vm_args.-name", "emqx@127.0.0.1", "EMQX_NODE_NAME")}
     , {"ssl_dist_optfile", t(string(), "vm_args.-ssl_dist_optfile", undefined)}
-    , {"cookie", t(string(), "vm_args.-setcookie", "emqxsecretcookie", "NODE_COOKIE")}
+    , {"cookie", t(string(), "vm_args.-setcookie", "emqxsecretcookie", "EMQX_NODE_COOKIE")}
     , {"data_dir", t(string(), "emqx.data_dir", undefined)}
     , {"heartbeat", t(flag(), undefined, false)}
     , {"async_threads", t(range(1, 1024), "vm_args.+A", undefined)}
     , {"process_limit", t(integer(), "vm_args.+P", undefined)}
-    , {"max_ports", t(range(1024, 134217727), "vm_args.+Q", undefined, "MAX_PORTS")}
+    , {"max_ports", t(range(1024, 134217727), "vm_args.+Q", undefined, "EMQX_MAX_PORTS")}
     , {"dist_buffer_size", fun node__dist_buffer_size/1}
     , {"global_gc_interval", t(duration_s(), "emqx.global_gc_interval", undefined)}
     , {"fullsweep_after", t(non_neg_integer(),
@@ -203,7 +203,7 @@ fields("acl") ->
     ];
 
 fields("mqtt") ->
-    [ {"max_packet_size", t(bytesize(), "emqx.max_packet_size", "1MB", "MAX_PACKET_SIZE")}
+    [ {"max_packet_size", t(bytesize(), "emqx.max_packet_size", "1MB", "EMQX_MAX_PACKET_SIZE")}
     , {"max_clientid_len", t(integer(), "emqx.max_clientid_len", 65535)}
     , {"max_topic_levels", t(integer(), "emqx.max_topic_levels", 0)}
     , {"max_qos_allowed", t(range(0, 2), "emqx.max_qos_allowed", 2)}