Merge pull request #8182 from zmstone/0611-fix-config-update-race-condition

fix(cluster_rpc): config update race condition

Dockerfile.ubuntu20.04.runner

@@ -0,0 +1,42 @@
+## This is a fast-build Dockerfile only for testing
+FROM ubuntu:20.04
+ARG PROFILE=emqx
+
+RUN apt-get update; \
+    apt-get install -y --no-install-recommends ca-certificates procps; \
+    rm -rf /var/lib/apt/lists/*
+
+RUN mkdir /opt/emqx
+RUN date > /opt/emqx/BUILD_TIME
+COPY _build/${PROFILE}/rel/emqx /opt/emqx
+RUN ln -s /opt/emqx/bin/* /usr/local/bin/
+COPY deploy/docker/docker-entrypoint.sh /usr/bin/
+
+WORKDIR /opt/emqx
+
+
+RUN groupadd -r -g 1000 emqx; \
+    useradd -r -m -u 1000 -g emqx emqx; \
+    chgrp -Rf emqx /opt/emqx; \
+    chmod -Rf g+w /opt/emqx; \
+    chown -Rf emqx /opt/emqx
+
+USER emqx
+
+VOLUME ["/opt/emqx/log", "/opt/emqx/data"]
+
+# emqx will occupy these port:
+# - 1883 port for MQTT
+# - 8081 for mgmt API
+# - 8083 for WebSocket/HTTP
+# - 8084 for WSS/HTTPS
+# - 8883 port for MQTT(SSL)
+# - 11883 port for internal MQTT/TCP
+# - 18083 for dashboard
+# - 4370 default Erlang distrbution port
+# - 5369 for backplain gen_rpc
+EXPOSE 1883 8081 8083 8084 8883 11883 18083 4370 5369
+
+ENTRYPOINT ["/usr/bin/docker-entrypoint.sh"]
+
+CMD ["/opt/emqx/bin/emqx", "foreground"]

Dockerfile.ubuntu20.04.runner.dockerignore

@@ -0,0 +1,4 @@
+*
+!_build/emqx
+!_build/emqx-enterprise
+!deploy

apps/emqx/src/emqx_config.erl

@@ -233,7 +233,8 @@ put(Config) ->
 
 erase(RootName) ->
     persistent_term:erase(?PERSIS_KEY(?CONF, bin(RootName))),
-    persistent_term:erase(?PERSIS_KEY(?RAW_CONF, bin(RootName))).
+    persistent_term:erase(?PERSIS_KEY(?RAW_CONF, bin(RootName))),
+    ok.
 
 -spec put(emqx_map_lib:config_key_path(), term()) -> ok.
 put(KeyPath, Config) ->

apps/emqx/src/emqx_metrics_worker.erl

@@ -163,8 +163,7 @@ get_counters(Name, Id) ->
 reset_counters(Name, Id) ->
     Indexes = maps:values(get_indexes(Name, Id)),
     Ref = get_ref(Name, Id),
-    [counters:put(Ref, Idx, 0) || Idx <- Indexes],
+    lists:foreach(fun(Idx) -> counters:put(Ref, Idx, 0) end, Indexes).
-    ok.
 
 -spec get_metrics(handler_name(), metric_id()) -> metrics().
 get_metrics(Name, Id) ->

apps/emqx/test/emqx_bpapi_static_checks.erl

@@ -53,8 +53,7 @@
 -define(RPC_MODULES, "gen_rpc, erpc, rpc, emqx_rpc").
 %% List of known functions also known to do RPC:
 -define(RPC_FUNCTIONS,
-    "emqx_cluster_rpc:multicall/3, emqx_cluster_rpc:multicall/5, "
+    "emqx_cluster_rpc:multicall/3, emqx_cluster_rpc:multicall/5"
-    "emqx_plugin_libs_rule:cluster_call/3"
 ).
 %% List of functions in the RPC backend modules that we can ignore:
 
@@ -63,11 +62,9 @@
 %% List of business-layer functions that are exempt from the checks:
 %% erlfmt-ignore
 -define(EXEMPTIONS,
-    "emqx_mgmt_api:do_query/6,"             % Reason: legacy code. A fun and a QC query are
+    "emqx_mgmt_api:do_query/6"  % Reason: legacy code. A fun and a QC query are
                                 % passed in the args, it's futile to try to statically
                                 % check it
-    "emqx_plugin_libs_rule:cluster_call/3"  % Reason: some sort of external plugin API that we
-                                            % don't want to break?
 ).
 
 -define(XREF, myxref).

apps/emqx_conf/src/emqx_cluster_rpc.erl

@@ -30,7 +30,11 @@
     skip_failed_commit/1,
     fast_forward_to_commit/2
 ]).
--export([get_node_tnx_id/1, latest_tnx_id/0]).
+-export([
+    get_node_tnx_id/1,
+    latest_tnx_id/0,
+    make_initiate_call_req/3
+]).
 
 -export([
     init/1,
@@ -44,7 +48,7 @@
 
 -export([get_tables_status/0]).
 
--export_type([txn_id/0, succeed_num/0, multicall_return/1, multicall_return/0]).
+-export_type([tnx_id/0, succeed_num/0]).
 
 -ifdef(TEST).
 -compile(export_all).
@@ -56,19 +60,21 @@
 -include_lib("emqx/include/logger.hrl").
 -include("emqx_conf.hrl").
 
+-define(INITIATE(MFA, LatestIdLastSeen), {initiate, MFA, LatestIdLastSeen}).
 -define(CATCH_UP, catch_up).
 -define(TIMEOUT, timer:minutes(1)).
 
--type txn_id() :: pos_integer().
+-type tnx_id() :: pos_integer().
 
 -type succeed_num() :: pos_integer() | all.
 
 -type multicall_return(Result) ::
-    {ok, txn_id(), Result}
+    {ok, tnx_id(), Result}
-    | {error, term()}
+    | {init_failure, term()}
-    | {retry, txn_id(), Result, node()}.
+    | {peers_lagging, tnx_id(), Result, [node()]}.
 
 -type multicall_return() :: multicall_return(_).
+-type init_call_req() :: ?INITIATE({module(), atom(), list()}, tnx_id()).
 
 %%%===================================================================
 %%% API
@@ -102,27 +108,73 @@ start_link(Node, Name, RetryMs) ->
             {error, Reason}
     end.
 
-%% @doc return {ok, TnxId, MFARes} the first MFA result when all MFA run ok.
+%% @doc Initiate a local call (or core node),
-%% return {error, MFARes} when the first MFA result is no ok or {ok, term()}.
+%% then async-ly replicate the call to peer nodes in the cluster.
-%% return {retry, TnxId, MFARes, Nodes} when some Nodes failed and some Node ok.
+%% The evaluation result of the provided MFA is returned,
--spec multicall(module(), atom(), list()) -> multicall_return().
+%% the result is expected to be `ok | {ok, _}' to indicate success,
+%% and `{error, _}' to indicate failure.
+%%
+%% The excpetion of the MFA evaluation is captured and translated
+%% into an `{error, _}' tuple.
+%% This call tries to wait for all peer nodes to be in-sync before
+%% returning the result.
+%%
+%% In case of partial success, an `error' level log is emitted
+%% but the initial localy apply result is returned.
+-spec multicall(module(), atom(), list()) -> term().
 multicall(M, F, A) ->
     multicall(M, F, A, all, timer:minutes(2)).
 
--spec multicall(module(), atom(), list(), succeed_num(), timeout()) -> multicall_return().
+-spec multicall(module(), atom(), list(), succeed_num(), timeout()) -> term().
-multicall(M, F, A, RequireNum, Timeout) when RequireNum =:= all orelse RequireNum >= 1 ->
+multicall(M, F, A, RequiredSyncs, Timeout) when RequiredSyncs =:= all orelse RequiredSyncs >= 1 ->
-    MFA = {initiate, {M, F, A}},
+    case do_multicall(M, F, A, RequiredSyncs, Timeout) of
+        {ok, _TxnId, Result} ->
+            Result;
+        {init_failure, Error} ->
+            Error;
+        {peers_lagging, TnxId, Res, Nodes} ->
+            %% The init MFA return ok, but some other nodes failed.
+            ?SLOG(error, #{
+                msg => "cluster_rpc_peers_lagging",
+                lagging_nodes => Nodes,
+                tnx_id => TnxId
+            }),
+            Res
+    end.
+
+%% Return {ok, TnxId, MFARes} the first MFA result when all MFA run ok.
+%% return {init_failure, Error} when the initial MFA result is no ok or {ok, term()}.
+%% return {peers_lagging, TnxId, MFARes, Nodes} when some Nodes failed and some Node ok.
+-spec do_multicall(module(), atom(), list(), succeed_num(), timeout()) -> multicall_return().
+do_multicall(M, F, A, RequiredSyncs, Timeout) when
+    RequiredSyncs =:= all orelse RequiredSyncs >= 1
+->
+    %% Idealy 'LatestId' should be provided by the multicall originator,
+    %% which is the viewer of the state e.g.
+    %%  * Sysadmin who issues CLI-commands or REST-API calls to make config changes
+    %%  * Dashboard viewer who is making decision based on what they can see from the UI
+    %% To reach the ideal state, it would require adding transaction ID to each and
+    %% every view/GET requests and also provide the ID as a part of the view/GET responses.
+    %%
+    %% To keep things simple, we try to get the 'old' view when a multicall request
+    %% is received as early as possible.
+    %%
+    %% Reason to do this:
+    %% The 'initiate' call handler tries to take a table lock (cluster-wide) before
+    %% bumping the transaction ID. While waiting for the lock, the ID might have been
+    %% bumpped by another node in the cluster.
+    InitReq = make_initiate_call_req(M, F, A),
     Begin = erlang:monotonic_time(),
     InitRes =
         case mria_rlog:role() of
             core ->
-                gen_server:call(?MODULE, MFA, Timeout);
+                gen_server:call(?MODULE, InitReq, Timeout);
             replicant ->
                 %% the initiate transaction must happened on core node
                 %% make sure MFA(in the transaction) and the transaction on the same node
                 %% don't need rpc again inside transaction.
                 case mria_status:upstream_node(?CLUSTER_RPC_SHARD) of
-                    {ok, Node} -> gen_server:call({?MODULE, Node}, MFA, Timeout);
+                    {ok, Node} -> gen_server:call({?MODULE, Node}, InitReq, Timeout);
                     disconnected -> {error, disconnected}
                 end
         end,
@@ -132,23 +184,23 @@ multicall(M, F, A, RequireNum, Timeout) when RequireNum =:= all orelse RequireNu
     RetryTimeout = ceil(3 * max(MinDelay, get_retry_ms())),
     OkOrFailed =
         case InitRes of
-            {ok, _TnxId, _} when RequireNum =:= 1 ->
+            {ok, _TnxId, _} when RequiredSyncs =:= 1 ->
                 ok;
-            {ok, TnxId, _} when RequireNum =:= all ->
+            {ok, TnxId, _} when RequiredSyncs =:= all ->
                 wait_for_all_nodes_commit(TnxId, MinDelay, RetryTimeout);
-            {ok, TnxId, _} when is_integer(RequireNum) ->
+            {ok, TnxId, _} when is_integer(RequiredSyncs) ->
-                wait_for_nodes_commit(RequireNum, TnxId, MinDelay, RetryTimeout);
+                wait_for_nodes_commit(RequiredSyncs, TnxId, MinDelay, RetryTimeout);
             Error ->
                 Error
         end,
     case OkOrFailed of
         ok ->
             InitRes;
-        {error, Error0} ->
+        {init_failure, Error0} ->
-            {error, Error0};
+            {init_failure, Error0};
-        {retry, Node0} ->
+        {peers_lagging, Nodes} ->
             {ok, TnxId0, MFARes} = InitRes,
-            {retry, TnxId0, MFARes, Node0}
+            {peers_lagging, TnxId0, MFARes, Nodes}
     end.
 
 -spec query(pos_integer()) -> {'atomic', map()} | {'aborted', Reason :: term()}.
@@ -167,6 +219,11 @@ latest_tnx_id() ->
     {atomic, TnxId} = transaction(fun get_latest_id/0, []),
     TnxId.
 
+-spec make_initiate_call_req(module(), atom(), list()) -> init_call_req().
+make_initiate_call_req(M, F, A) ->
+    TnxId = get_latest_id(dirty),
+    ?INITIATE({M, F, A}, TnxId).
+
 -spec get_node_tnx_id(node()) -> integer().
 get_node_tnx_id(Node) ->
     case mnesia:wread({?CLUSTER_COMMIT, Node}) of
@@ -232,12 +289,12 @@ handle_call(reset, _From, State) ->
     _ = mria:clear_table(?CLUSTER_COMMIT),
     _ = mria:clear_table(?CLUSTER_MFA),
     {reply, ok, State, {continue, ?CATCH_UP}};
-handle_call({initiate, MFA}, _From, State = #{node := Node}) ->
+handle_call(?INITIATE(MFA, LatestId), _From, State = #{node := Node}) ->
-    case transaction(fun init_mfa/2, [Node, MFA]) of
+    case transaction(fun init_mfa/3, [Node, MFA, LatestId]) of
         {atomic, {ok, TnxId, Result}} ->
             {reply, {ok, TnxId, Result}, State, {continue, ?CATCH_UP}};
-        {aborted, Reason} ->
+        {aborted, Error} ->
-            {reply, {error, Reason}, State, {continue, ?CATCH_UP}}
+            {reply, {init_failure, Error}, State, {continue, ?CATCH_UP}}
     end;
 handle_call(skip_failed_commit, _From, State = #{node := Node}) ->
     Timeout = catch_up(State, true),
@@ -273,7 +330,7 @@ catch_up(#{node := Node, retry_interval := RetryMs} = State, SkipResult) ->
         {atomic, caught_up} ->
             ?TIMEOUT;
         {atomic, {still_lagging, NextId, MFA}} ->
-            {Succeed, _} = apply_mfa(NextId, MFA),
+            {Succeed, _} = apply_mfa(NextId, MFA, catch_up),
             case Succeed orelse SkipResult of
                 true ->
                     case transaction(fun commit/2, [Node, NextId]) of
@@ -316,35 +373,6 @@ read_next_mfa(Node) ->
         [#cluster_rpc_mfa{mfa = MFA}] -> {still_lagging, NextId, MFA}
     end.
 
-do_catch_up(ToTnxId, Node) ->
-    case mnesia:wread({?CLUSTER_COMMIT, Node}) of
-        [] ->
-            commit(Node, ToTnxId),
-            caught_up;
-        [#cluster_rpc_commit{tnx_id = LastAppliedId}] when ToTnxId =:= LastAppliedId ->
-            caught_up;
-        [#cluster_rpc_commit{tnx_id = LastAppliedId}] when ToTnxId > LastAppliedId ->
-            CurTnxId = LastAppliedId + 1,
-            [#cluster_rpc_mfa{mfa = MFA}] = mnesia:read(?CLUSTER_MFA, CurTnxId),
-            case apply_mfa(CurTnxId, MFA) of
-                {true, _Result} -> ok = commit(Node, CurTnxId);
-                {false, Error} -> mnesia:abort(Error)
-            end;
-        [#cluster_rpc_commit{tnx_id = LastAppliedId}] ->
-            Reason = lists:flatten(
-                io_lib:format(
-                    "~p catch up failed by LastAppliedId(~p) > ToTnxId(~p)",
-                    [Node, LastAppliedId, ToTnxId]
-                )
-            ),
-            ?SLOG(error, #{
-                msg => "catch_up_failed!",
-                last_applied_id => LastAppliedId,
-                to_tnx_id => ToTnxId
-            }),
-            mnesia:abort(Reason)
-    end.
-
 commit(Node, TnxId) ->
     ok = mnesia:write(?CLUSTER_COMMIT, #cluster_rpc_commit{node = Node, tnx_id = TnxId}, write).
 
@@ -365,15 +393,24 @@ do_fast_forward_to_commit(ToTnxId, State = #{node := Node}) ->
     end.
 
 get_latest_id() ->
-    case mnesia:last(?CLUSTER_MFA) of
+    get_latest_id(tnx).
+
+get_latest_id(IsolationLevel) ->
+    F =
+        case IsolationLevel of
+            tnx -> fun mnesia:last/1;
+            dirty -> fun mnesia:dirty_last/1
+        end,
+    case F(?CLUSTER_MFA) of
         '$end_of_table' -> 0;
         Id -> Id
     end.
 
-init_mfa(Node, MFA) ->
+init_mfa(Node, MFA, LatestIdLastSeen) ->
     mnesia:write_lock_table(?CLUSTER_MFA),
     LatestId = get_latest_id(),
-    ok = do_catch_up_in_one_trans(LatestId, Node),
+    case LatestIdLastSeen =:= LatestId of
+        true ->
             TnxId = LatestId + 1,
             MFARec = #cluster_rpc_mfa{
                 tnx_id = TnxId,
@@ -383,15 +420,17 @@ init_mfa(Node, MFA) ->
             },
             ok = mnesia:write(?CLUSTER_MFA, MFARec, write),
             ok = commit(Node, TnxId),
-    case apply_mfa(TnxId, MFA) of
+            case apply_mfa(TnxId, MFA, init) of
                 {true, Result} -> {ok, TnxId, Result};
                 {false, Error} -> mnesia:abort(Error)
-    end.
+            end;
-
+        false ->
-do_catch_up_in_one_trans(LatestId, Node) ->
+            ?SLOG(error, #{
-    case do_catch_up(LatestId, Node) of
+                msg => stale_view_of_cluster_state,
-        caught_up -> ok;
+                tnx_id => LatestId,
-        ok -> do_catch_up_in_one_trans(LatestId, Node)
+                last_seen_tnx_id => LatestIdLastSeen
+            }),
+            mnesia:abort({error, stale_view_of_cluster_state})
     end.
 
 transaction(Func, Args) ->
@@ -433,7 +472,7 @@ trans_query(TnxId) ->
 
 -define(TO_BIN(_B_), iolist_to_binary(io_lib:format("~p", [_B_]))).
 
-apply_mfa(TnxId, {M, F, A}) ->
+apply_mfa(TnxId, {M, F, A}, Kind) ->
     Res =
         try
             erlang:apply(M, F, A)
@@ -444,7 +483,7 @@ apply_mfa(TnxId, {M, F, A}) ->
                 {error, #{exception => Class, reason => Reason, stacktrace => Stacktrace}}
         end,
     %% Do not log args as it might be sensitive information
-    Meta = #{tnx_id => TnxId, entrypoint => format_mfa(M, F, length(A))},
+    Meta = #{kind => Kind, tnx_id => TnxId, entrypoint => format_mfa(M, F, length(A))},
     IsSuccess = is_success(Res),
     log_and_alarm(IsSuccess, Res, Meta),
     {IsSuccess, Res}.
@@ -475,21 +514,21 @@ wait_for_all_nodes_commit(TnxId, Delay, Remain) ->
         [] ->
             ok;
         Nodes ->
-            {retry, Nodes}
+            {peers_lagging, Nodes}
     end.
 
-wait_for_nodes_commit(RequiredNum, TnxId, Delay, Remain) ->
+wait_for_nodes_commit(RequiredSyncs, TnxId, Delay, Remain) ->
     ok = timer:sleep(Delay),
-    case length(synced_nodes(TnxId)) >= RequiredNum of
+    case length(synced_nodes(TnxId)) >= RequiredSyncs of
         true ->
             ok;
         false when Remain > 0 ->
-            wait_for_nodes_commit(RequiredNum, TnxId, Delay, Remain - Delay);
+            wait_for_nodes_commit(RequiredSyncs, TnxId, Delay, Remain - Delay);
         false ->
             case lagging_node(TnxId) of
                 %% All commit but The succeedNum > length(nodes()).
                 [] -> ok;
-                Nodes -> {retry, Nodes}
+                Nodes -> {peers_lagging, Nodes}
             end
     end.
 

apps/emqx_conf/src/emqx_conf.erl

@@ -92,7 +92,7 @@ get_node_and_config(KeyPath) ->
 ) ->
     {ok, emqx_config:update_result()} | {error, emqx_config:update_error()}.
 update(KeyPath, UpdateReq, Opts) ->
-    check_cluster_rpc_result(emqx_conf_proto_v1:update(KeyPath, UpdateReq, Opts)).
+    emqx_conf_proto_v1:update(KeyPath, UpdateReq, Opts).
 
 %% @doc Update the specified node's key path in local-override.conf.
 -spec update(
@@ -111,7 +111,7 @@ update(Node, KeyPath, UpdateReq, Opts) ->
 -spec remove(emqx_map_lib:config_key_path(), emqx_config:update_opts()) ->
     {ok, emqx_config:update_result()} | {error, emqx_config:update_error()}.
 remove(KeyPath, Opts) ->
-    check_cluster_rpc_result(emqx_conf_proto_v1:remove_config(KeyPath, Opts)).
+    emqx_conf_proto_v1:remove_config(KeyPath, Opts).
 
 %% @doc remove the specified node's key path in local-override.conf.
 -spec remove(node(), emqx_map_lib:config_key_path(), emqx_config:update_opts()) ->
@@ -125,7 +125,7 @@ remove(Node, KeyPath, Opts) ->
 -spec reset(emqx_map_lib:config_key_path(), emqx_config:update_opts()) ->
     {ok, emqx_config:update_result()} | {error, emqx_config:update_error()}.
 reset(KeyPath, Opts) ->
-    check_cluster_rpc_result(emqx_conf_proto_v1:reset(KeyPath, Opts)).
+    emqx_conf_proto_v1:reset(KeyPath, Opts).
 
 %% @doc reset the specified node's key path in local-override.conf.
 -spec reset(node(), emqx_map_lib:config_key_path(), emqx_config:update_opts()) ->
@@ -208,24 +208,6 @@ gen_example(File, SchemaModule, I18nFile, Lang) ->
     Example = hocon_schema_example:gen(SchemaModule, Opts),
     file:write_file(File, Example).
 
-check_cluster_rpc_result(Result) ->
-    case Result of
-        {ok, _TnxId, Res} ->
-            Res;
-        {retry, TnxId, Res, Nodes} ->
-            %% The init MFA return ok, but other nodes failed.
-            %% We return ok and alert an alarm.
-            ?SLOG(error, #{
-                msg => "failed_to_update_config_in_cluster",
-                nodes => Nodes,
-                tnx_id => TnxId
-            }),
-            Res;
-        %% all MFA return not ok or {ok, term()}.
-        {error, Error} ->
-            Error
-    end.
-
 %% Only gen hot_conf schema, not all configuration fields.
 gen_hot_conf_schema(File) ->
     {ApiSpec0, Components0} = emqx_dashboard_swagger:spec(

apps/emqx_conf/src/proto/emqx_conf_proto_v1.erl

@@ -61,7 +61,7 @@ get_all(KeyPath) ->
     update_config_key_path(),
     emqx_config:update_request(),
     emqx_config:update_opts()
-) -> emqx_cluster_rpc:multicall_return().
+) -> {ok, emqx_config:update_result()} | {error, emqx_config:update_error()}.
 update(KeyPath, UpdateReq, Opts) ->
     emqx_cluster_rpc:multicall(emqx, update_config, [KeyPath, UpdateReq, Opts]).
 
@@ -78,7 +78,7 @@ update(Node, KeyPath, UpdateReq, Opts) ->
     rpc:call(Node, emqx, update_config, [KeyPath, UpdateReq, Opts], 5000).
 
 -spec remove_config(update_config_key_path(), emqx_config:update_opts()) ->
-    emqx_cluster_rpc:multicall_result().
+    {ok, emqx_config:update_result()} | {error, emqx_config:update_error()}.
 remove_config(KeyPath, Opts) ->
     emqx_cluster_rpc:multicall(emqx, remove_config, [KeyPath, Opts]).
 
@@ -90,7 +90,7 @@ remove_config(Node, KeyPath, Opts) ->
     rpc:call(Node, emqx, remove_config, [KeyPath, Opts], 5000).
 
 -spec reset(update_config_key_path(), emqx_config:update_opts()) ->
-    emqx_cluster_rpc:multicall_return().
+    {ok, emqx_config:update_result()} | {error, emqx_config:update_error()}.
 reset(KeyPath, Opts) ->
     emqx_cluster_rpc:multicall(emqx, reset_config, [KeyPath, Opts]).
 

apps/emqx_conf/test/emqx_cluster_rpc_SUITE.erl

@@ -69,13 +69,13 @@ t_base_test(_Config) ->
     ?assertEqual(emqx_cluster_rpc:status(), {atomic, []}),
     Pid = self(),
     MFA = {M, F, A} = {?MODULE, echo, [Pid, test]},
-    {ok, TnxId, ok} = emqx_cluster_rpc:multicall(M, F, A),
+    {ok, TnxId, ok} = multicall(M, F, A),
     {atomic, Query} = emqx_cluster_rpc:query(TnxId),
     ?assertEqual(MFA, maps:get(mfa, Query)),
     ?assertEqual(node(), maps:get(initiator, Query)),
     ?assert(maps:is_key(created_at, Query)),
     ?assertEqual(ok, receive_msg(3, test)),
-    ?assertEqual({ok, 2, ok}, emqx_cluster_rpc:multicall(M, F, A)),
+    ?assertEqual({ok, 2, ok}, multicall(M, F, A)),
     {atomic, Status} = emqx_cluster_rpc:status(),
     case length(Status) =:= 3 of
         true ->
@@ -95,7 +95,7 @@ t_commit_fail_test(_Config) ->
     emqx_cluster_rpc:reset(),
     {atomic, []} = emqx_cluster_rpc:status(),
     {M, F, A} = {?MODULE, failed_on_node, [erlang:whereis(?NODE2)]},
-    {error, "MFA return not ok"} = emqx_cluster_rpc:multicall(M, F, A),
+    {init_failure, "MFA return not ok"} = multicall(M, F, A),
     ?assertEqual({atomic, []}, emqx_cluster_rpc:status()),
     ok.
 
@@ -103,7 +103,7 @@ t_commit_crash_test(_Config) ->
     emqx_cluster_rpc:reset(),
     {atomic, []} = emqx_cluster_rpc:status(),
     {M, F, A} = {?MODULE, no_exist_function, []},
-    {error, {error, Meta}} = emqx_cluster_rpc:multicall(M, F, A),
+    {init_failure, {error, Meta}} = multicall(M, F, A),
     ?assertEqual(undef, maps:get(reason, Meta)),
     ?assertEqual(error, maps:get(exception, Meta)),
     ?assertEqual(true, maps:is_key(stacktrace, Meta)),
@@ -114,21 +114,23 @@ t_commit_ok_but_apply_fail_on_other_node(_Config) ->
     emqx_cluster_rpc:reset(),
     {atomic, []} = emqx_cluster_rpc:status(),
     MFA = {M, F, A} = {?MODULE, failed_on_node, [erlang:whereis(?NODE1)]},
-    {ok, _, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, _, ok} = multicall(M, F, A, 1, 1000),
     {atomic, [Status]} = emqx_cluster_rpc:status(),
     ?assertEqual(MFA, maps:get(mfa, Status)),
     ?assertEqual(node(), maps:get(node, Status)),
     erlang:send(?NODE2, test),
-    Res = gen_server:call(?NODE2, {initiate, {M, F, A}}),
+    Call = emqx_cluster_rpc:make_initiate_call_req(M, F, A),
-    ?assertEqual({error, "MFA return not ok"}, Res),
+    Res = gen_server:call(?NODE2, Call),
+    ?assertEqual({init_failure, "MFA return not ok"}, Res),
     ok.
 
 t_catch_up_status_handle_next_commit(_Config) ->
     emqx_cluster_rpc:reset(),
     {atomic, []} = emqx_cluster_rpc:status(),
     {M, F, A} = {?MODULE, failed_on_node_by_odd, [erlang:whereis(?NODE1)]},
-    {ok, 1, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 1, ok} = multicall(M, F, A, 1, 1000),
-    {ok, 2} = gen_server:call(?NODE2, {initiate, {M, F, A}}),
+    Call = emqx_cluster_rpc:make_initiate_call_req(M, F, A),
+    {ok, 2} = gen_server:call(?NODE2, Call),
     ok.
 
 t_commit_ok_apply_fail_on_other_node_then_recover(_Config) ->
@@ -138,19 +140,19 @@ t_commit_ok_apply_fail_on_other_node_then_recover(_Config) ->
     ets:insert(test, {other_mfa_result, failed}),
     ct:pal("111:~p~n", [ets:tab2list(cluster_rpc_commit)]),
     {M, F, A} = {?MODULE, failed_on_other_recover_after_retry, [erlang:whereis(?NODE1)]},
-    {ok, 1, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 1, ok} = multicall(M, F, A, 1, 1000),
     ct:pal("222:~p~n", [ets:tab2list(cluster_rpc_commit)]),
     ct:pal("333:~p~n", [emqx_cluster_rpc:status()]),
     {atomic, [_Status | L]} = emqx_cluster_rpc:status(),
     ?assertEqual([], L),
     ets:insert(test, {other_mfa_result, ok}),
-    {ok, 2, ok} = emqx_cluster_rpc:multicall(io, format, ["test"], 1, 1000),
+    {ok, 2, ok} = multicall(io, format, ["test"], 1, 1000),
     ct:sleep(1000),
     {atomic, NewStatus} = emqx_cluster_rpc:status(),
     ?assertEqual(3, length(NewStatus)),
     Pid = self(),
     MFAEcho = {M1, F1, A1} = {?MODULE, echo, [Pid, test]},
-    {ok, TnxId, ok} = emqx_cluster_rpc:multicall(M1, F1, A1),
+    {ok, TnxId, ok} = multicall(M1, F1, A1),
     {atomic, Query} = emqx_cluster_rpc:query(TnxId),
     ?assertEqual(MFAEcho, maps:get(mfa, Query)),
     ?assertEqual(node(), maps:get(initiator, Query)),
@@ -167,7 +169,7 @@ t_del_stale_mfa(_Config) ->
     Ids =
         [
             begin
-                {ok, TnxId, ok} = emqx_cluster_rpc:multicall(M, F, A),
+                {ok, TnxId, ok} = multicall(M, F, A),
                 TnxId
             end
          || _ <- Keys
@@ -176,7 +178,7 @@ t_del_stale_mfa(_Config) ->
     Ids2 =
         [
             begin
-                {ok, TnxId, ok} = emqx_cluster_rpc:multicall(M, F, A),
+                {ok, TnxId, ok} = multicall(M, F, A),
                 TnxId
             end
          || _ <- Keys2
@@ -203,7 +205,7 @@ t_del_stale_mfa(_Config) ->
 t_skip_failed_commit(_Config) ->
     emqx_cluster_rpc:reset(),
     {atomic, []} = emqx_cluster_rpc:status(),
-    {ok, 1, ok} = emqx_cluster_rpc:multicall(io, format, ["test~n"], all, 1000),
+    {ok, 1, ok} = multicall(io, format, ["test~n"], all, 1000),
     ct:sleep(180),
     {atomic, List1} = emqx_cluster_rpc:status(),
     Node = node(),
@@ -212,7 +214,7 @@ t_skip_failed_commit(_Config) ->
         tnx_ids(List1)
     ),
     {M, F, A} = {?MODULE, failed_on_node, [erlang:whereis(?NODE1)]},
-    {ok, 2, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 2, ok} = multicall(M, F, A, 1, 1000),
     2 = gen_server:call(?NODE2, skip_failed_commit, 5000),
     {atomic, List2} = emqx_cluster_rpc:status(),
     ?assertEqual(
@@ -224,7 +226,7 @@ t_skip_failed_commit(_Config) ->
 t_fast_forward_commit(_Config) ->
     emqx_cluster_rpc:reset(),
     {atomic, []} = emqx_cluster_rpc:status(),
-    {ok, 1, ok} = emqx_cluster_rpc:multicall(io, format, ["test~n"], all, 1000),
+    {ok, 1, ok} = multicall(io, format, ["test~n"], all, 1000),
     ct:sleep(180),
     {atomic, List1} = emqx_cluster_rpc:status(),
     Node = node(),
@@ -233,11 +235,11 @@ t_fast_forward_commit(_Config) ->
         tnx_ids(List1)
     ),
     {M, F, A} = {?MODULE, failed_on_node, [erlang:whereis(?NODE1)]},
-    {ok, 2, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 2, ok} = multicall(M, F, A, 1, 1000),
-    {ok, 3, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 3, ok} = multicall(M, F, A, 1, 1000),
-    {ok, 4, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 4, ok} = multicall(M, F, A, 1, 1000),
-    {ok, 5, ok} = emqx_cluster_rpc:multicall(M, F, A, 1, 1000),
+    {ok, 5, ok} = multicall(M, F, A, 1, 1000),
-    {retry, 6, ok, _} = emqx_cluster_rpc:multicall(M, F, A, 2, 1000),
+    {peers_lagging, 6, ok, _} = multicall(M, F, A, 2, 1000),
     3 = gen_server:call(?NODE2, {fast_forward_to_commit, 3}, 5000),
     4 = gen_server:call(?NODE2, {fast_forward_to_commit, 4}, 5000),
     6 = gen_server:call(?NODE2, {fast_forward_to_commit, 7}, 5000),
@@ -333,3 +335,9 @@ failed_on_other_recover_after_retry(Pid) ->
             [{_, Res}] = ets:lookup(test, other_mfa_result),
             Res
     end.
+
+multicall(M, F, A, N, T) ->
+    emqx_cluster_rpc:do_multicall(M, F, A, N, T).
+
+multicall(M, F, A) ->
+    multicall(M, F, A, all, timer:minutes(2)).

apps/emqx_connector/test/emqx_connector_SUITE.erl

@@ -70,6 +70,7 @@ end_per_testcase(_, _Config) ->
     ok.
 
 t_list_raw_empty(_) ->
+    ok = emqx_config:erase(hd(emqx_connector:config_key_path())),
     Result = emqx_connector:list_raw(),
     ?assertEqual([], Result).
 

apps/emqx_gateway/src/emqx_gateway_http.erl

@@ -556,7 +556,7 @@ with_gateway(GwName0, Fun) ->
             end,
         case emqx_gateway:lookup(GwName) of
             undefined ->
-                return_http_error(404, "Gateway not load");
+                return_http_error(404, "Gateway not loaded");
             Gateway ->
                 Fun(GwName, Gateway)
         end

apps/emqx_management/src/emqx_mgmt_api_plugins.erl

@@ -317,7 +317,7 @@ get_plugins() ->
 upload_install(post, #{body := #{<<"plugin">> := Plugin}}) when is_map(Plugin) ->
     [{FileName, Bin}] = maps:to_list(maps:without([type], Plugin)),
     %% File bin is too large, we use rpc:multicall instead of cluster_rpc:multicall
-    %% TODO what happened when a new node join in?
+    %% TODO what happens when a new node join in?
     %% emqx_plugins_monitor should copy plugins from other core node when boot-up.
     case emqx_plugins:describe(string:trim(FileName, trailing, ".tar.gz")) of
         {error, #{error := "bad_info_file", return := {enoent, _}}} ->
@@ -358,16 +358,11 @@ upload_install(post, #{}) ->
     }}.
 
 do_install_package(FileName, Bin) ->
-    {Res, _} = emqx_mgmt_api_plugins_proto_v1:install_package(FileName, Bin),
+    %% TODO: handle bad nodes
-    case lists:filter(fun(R) -> R =/= ok end, Res) of
+    {[_ | _] = Res, []} = emqx_mgmt_api_plugins_proto_v1:install_package(FileName, Bin),
-        [] ->
+    %% TODO: handle non-OKs
-            {200};
+    [] = lists:filter(fun(R) -> R =/= ok end, Res),
-        [{error, Reason} | _] ->
+    {200}.
-            {400, #{
-                code => 'UNEXPECTED_ERROR',
-                message => iolist_to_binary(io_lib:format("~p", [Reason]))
-            }}
-    end.
 
 plugin(get, #{bindings := #{name := Name}}) ->
     {Plugins, _} = emqx_mgmt_api_plugins_proto_v1:describe_package(Name),
@@ -376,11 +371,11 @@ plugin(get, #{bindings := #{name := Name}}) ->
         [] -> {404, #{code => 'NOT_FOUND', message => Name}}
     end;
 plugin(delete, #{bindings := #{name := Name}}) ->
-    {ok, _TnxId, Res} = emqx_mgmt_api_plugins_proto_v1:delete_package(Name),
+    Res = emqx_mgmt_api_plugins_proto_v1:delete_package(Name),
     return(204, Res).
 
 update_plugin(put, #{bindings := #{name := Name, action := Action}}) ->
-    {ok, _TnxId, Res} = emqx_mgmt_api_plugins_proto_v1:ensure_action(Name, Action),
+    Res = emqx_mgmt_api_plugins_proto_v1:ensure_action(Name, Action),
     return(204, Res).
 
 update_boot_order(post, #{bindings := #{name := Name}, body := Body}) ->
@@ -422,7 +417,8 @@ delete_package(Name) ->
         ok ->
             _ = emqx_plugins:ensure_disabled(Name),
             _ = emqx_plugins:ensure_uninstalled(Name),
-            _ = emqx_plugins:delete_package(Name);
+            _ = emqx_plugins:delete_package(Name),
+            ok;
         Error ->
             Error
     end.
@@ -430,20 +426,19 @@ delete_package(Name) ->
 %% for RPC plugin update
 ensure_action(Name, start) ->
     _ = emqx_plugins:ensure_enabled(Name),
-    _ = emqx_plugins:ensure_started(Name);
+    _ = emqx_plugins:ensure_started(Name),
+    ok;
 ensure_action(Name, stop) ->
     _ = emqx_plugins:ensure_stopped(Name),
-    _ = emqx_plugins:ensure_disabled(Name);
+    _ = emqx_plugins:ensure_disabled(Name),
+    ok;
 ensure_action(Name, restart) ->
     _ = emqx_plugins:ensure_enabled(Name),
-    _ = emqx_plugins:restart(Name).
+    _ = emqx_plugins:restart(Name),
+    ok.
 
 return(Code, ok) ->
     {Code};
-return(Code, {ok, Result}) ->
-    {Code, Result};
-return(_, {error, #{error := "bad_info_file", return := {enoent, _}, path := Path}}) ->
-    {404, #{code => 'NOT_FOUND', message => Path}};
 return(_, {error, Reason}) ->
     {400, #{code => 'PARAM_ERROR', message => iolist_to_binary(io_lib:format("~p", [Reason]))}}.
 

apps/emqx_management/src/proto/emqx_mgmt_api_plugins_proto_v1.erl

@@ -43,11 +43,10 @@ install_package(Filename, Bin) ->
 describe_package(Name) ->
     rpc:multicall(emqx_mgmt_api_plugins, describe_package, [Name], 10000).
 
--spec delete_package(binary() | string()) -> emqx_cluster_rpc:multicall_return().
+-spec delete_package(binary() | string()) -> ok | {error, any()}.
 delete_package(Name) ->
     emqx_cluster_rpc:multicall(emqx_mgmt_api_plugins, delete_package, [Name], all, 10000).
 
--spec ensure_action(binary() | string(), 'restart' | 'start' | 'stop') ->
+-spec ensure_action(binary() | string(), 'restart' | 'start' | 'stop') -> ok | {error, any()}.
-    emqx_cluster_rpc:multicall_return().
 ensure_action(Name, Action) ->
     emqx_cluster_rpc:multicall(emqx_mgmt_api_plugins, ensure_action, [Name, Action], all, 10000).

apps/emqx_plugin_libs/src/emqx_plugin_libs_rule.erl

@@ -61,8 +61,6 @@
     can_topic_match_oneof/2
 ]).
 
--export([cluster_call/3]).
-
 -compile({no_auto_import, [float/1]}).
 
 -define(EX_PLACE_HOLDER, "(\\$\\{[a-zA-Z0-9\\._]+\\})").
@@ -307,7 +305,3 @@ can_topic_match_oneof(Topic, Filters) ->
         end,
         Filters
     ).
-
-cluster_call(Module, Func, Args) ->
-    {ok, _TnxId, Result} = emqx_cluster_rpc:multicall(Module, Func, Args),
-    Result.

apps/emqx_plugins/src/emqx_plugins.erl

@@ -337,7 +337,7 @@ do_ensure_started(NameVsn) ->
     ).
 
 %% try the function, catch 'throw' exceptions as normal 'error' return
-%% other exceptions with stacktrace returned.
+%% other exceptions with stacktrace logged.
 tryit(WhichOp, F) ->
     try
         F()
@@ -648,7 +648,7 @@ put_config(Key, Value) when is_atom(Key) ->
     put_config([Key], Value);
 put_config(Path, Values) when is_list(Path) ->
     Opts = #{rawconf_with_defaults => true, override_to => cluster},
-    case emqx:update_config([?CONF_ROOT | Path], bin_key(Values), Opts) of
+    case emqx_conf:update([?CONF_ROOT | Path], bin_key(Values), Opts) of
         {ok, _} -> ok;
         Error -> Error
     end.

apps/emqx_plugins/test/emqx_plugins_tests.erl

@@ -125,20 +125,10 @@ purge_test() ->
 meck_emqx() ->
     meck:new(emqx, [unstick, passthrough]),
     meck:expect(
-        emqx,
+        emqx_conf,
-        update_config,
+        update,
         fun(Path, Values, _Opts) ->
             emqx_config:put(Path, Values)
         end
     ),
-    %meck:expect(emqx, get_config,
-    %    fun(KeyPath, Default) ->
-    %        Map = emqx:get_raw_config(KeyPath, Default),
-    %        Map1 = emqx_map_lib:safe_atom_key_map(Map),
-    %        case Map1 of
-    %            #{states := Plugins} ->
-    %                Map1#{states => [emqx_map_lib:safe_atom_key_map(P) ||P <- Plugins]};
-    %            _ -> Map1
-    %        end
-    %    end),
     ok.

apps/emqx_resource/src/emqx_resource.erl

@@ -174,7 +174,7 @@ create(InstId, Group, ResourceType, Config) ->
 -spec create(instance_id(), resource_group(), resource_type(), resource_config(), create_opts()) ->
     {ok, resource_data() | 'already_created'} | {error, Reason :: term()}.
 create(InstId, Group, ResourceType, Config, Opts) ->
-    wrap_rpc(emqx_resource_proto_v1:create(InstId, Group, ResourceType, Config, Opts)).
+    emqx_resource_proto_v1:create(InstId, Group, ResourceType, Config, Opts).
 % --------------------------------------------
 
 -spec create_local(instance_id(), resource_group(), resource_type(), resource_config()) ->
@@ -196,7 +196,7 @@ create_local(InstId, Group, ResourceType, Config, Opts) ->
 -spec create_dry_run(resource_type(), resource_config()) ->
     ok | {error, Reason :: term()}.
 create_dry_run(ResourceType, Config) ->
-    wrap_rpc(emqx_resource_proto_v1:create_dry_run(ResourceType, Config)).
+    emqx_resource_proto_v1:create_dry_run(ResourceType, Config).
 
 -spec create_dry_run_local(resource_type(), resource_config()) ->
     ok | {error, Reason :: term()}.
@@ -211,7 +211,7 @@ recreate(InstId, ResourceType, Config) ->
 -spec recreate(instance_id(), resource_type(), resource_config(), create_opts()) ->
     {ok, resource_data()} | {error, Reason :: term()}.
 recreate(InstId, ResourceType, Config, Opts) ->
-    wrap_rpc(emqx_resource_proto_v1:recreate(InstId, ResourceType, Config, Opts)).
+    emqx_resource_proto_v1:recreate(InstId, ResourceType, Config, Opts).
 
 -spec recreate_local(instance_id(), resource_type(), resource_config()) ->
     {ok, resource_data()} | {error, Reason :: term()}.
@@ -225,7 +225,7 @@ recreate_local(InstId, ResourceType, Config, Opts) ->
 
 -spec remove(instance_id()) -> ok | {error, Reason :: term()}.
 remove(InstId) ->
-    wrap_rpc(emqx_resource_proto_v1:remove(InstId)).
+    emqx_resource_proto_v1:remove(InstId).
 
 -spec remove_local(instance_id()) -> ok | {error, Reason :: term()}.
 remove_local(InstId) ->
@@ -237,7 +237,7 @@ reset_metrics_local(InstId) ->
 
 -spec reset_metrics(instance_id()) -> ok | {error, Reason :: term()}.
 reset_metrics(InstId) ->
-    wrap_rpc(emqx_resource_proto_v1:reset_metrics(InstId)).
+    emqx_resource_proto_v1:reset_metrics(InstId).
 
 %% =================================================================================
 -spec query(instance_id(), Request :: term()) -> Result :: term().
@@ -430,11 +430,5 @@ inc_metrics_funcs(InstId) ->
 safe_apply(Func, Args) ->
     ?SAFE_CALL(erlang:apply(Func, Args)).
 
-wrap_rpc(Ret) ->
-    case Ret of
-        {ok, _TxnId, Result} -> Result;
-        Failed -> Failed
-    end.
-
 query_error(Reason, Msg) ->
     {error, {?MODULE, #{reason => Reason, msg => Msg}}}.

apps/emqx_resource/src/proto/emqx_resource_proto_v1.erl

@@ -40,7 +40,7 @@ introduced_in() ->
     resource_config(),
     create_opts()
 ) ->
-    emqx_cluster_rpc:multicall_return(resource_data()).
+    {ok, resource_data() | 'already_created'} | {error, Reason :: term()}.
 create(InstId, Group, ResourceType, Config, Opts) ->
     emqx_cluster_rpc:multicall(emqx_resource, create_local, [
         InstId, Group, ResourceType, Config, Opts
@@ -50,7 +50,7 @@ create(InstId, Group, ResourceType, Config, Opts) ->
     resource_type(),
     resource_config()
 ) ->
-    emqx_cluster_rpc:multicall_return(resource_data()).
+    ok | {error, Reason :: term()}.
 create_dry_run(ResourceType, Config) ->
     emqx_cluster_rpc:multicall(emqx_resource, create_dry_run_local, [ResourceType, Config]).
 
@@ -60,16 +60,14 @@ create_dry_run(ResourceType, Config) ->
     resource_config(),
     create_opts()
 ) ->
-    emqx_cluster_rpc:multicall_return(resource_data()).
+    {ok, resource_data()} | {error, Reason :: term()}.
 recreate(InstId, ResourceType, Config, Opts) ->
     emqx_cluster_rpc:multicall(emqx_resource, recreate_local, [InstId, ResourceType, Config, Opts]).
 
--spec remove(instance_id()) ->
+-spec remove(instance_id()) -> ok | {error, Reason :: term()}.
-    emqx_cluster_rpc:multicall_return(ok).
 remove(InstId) ->
     emqx_cluster_rpc:multicall(emqx_resource, remove_local, [InstId]).
 
--spec reset_metrics(instance_id()) ->
+-spec reset_metrics(instance_id()) -> ok | {error, any()}.
-    emqx_cluster_rpc:multicall_return(ok).
 reset_metrics(InstId) ->
     emqx_cluster_rpc:multicall(emqx_resource, reset_metrics_local, [InstId]).

apps/emqx_rule_engine/src/emqx_rule_engine_api.erl

@@ -321,7 +321,7 @@ replace_sql_clrf(#{<<"sql">> := SQL} = Params) ->
     end.
 '/rules/:id/reset_metrics'(put, #{bindings := #{id := RuleId}}) ->
     case emqx_rule_engine_proto_v1:reset_metrics(RuleId) of
-        {ok, _TxnId, _Result} ->
+        ok ->
             {200, <<"Reset Success">>};
         Failed ->
             {400, #{

apps/emqx_rule_engine/src/proto/emqx_rule_engine_proto_v1.erl

@@ -30,7 +30,6 @@
 introduced_in() ->
     "5.0.0".
 
--spec reset_metrics(rule_id()) ->
+-spec reset_metrics(rule_id()) -> ok | {error, any()}.
-    emqx_cluster_rpc:multicall_return(ok).
 reset_metrics(RuleId) ->
     emqx_cluster_rpc:multicall(emqx_rule_engine, reset_metrics_for_rule, [RuleId]).

scripts/make-docker-image-from-host-build.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+set -x
+
+PROFILE="$1"
+COMPILE="${2:-no}"
+DISTRO="$(./scripts/get-distro.sh)"
+PKG_VSN="${PKG_VSN:-$(./pkg-vsn.sh "$PROFILE")}"
+
+case "$DISTRO" in
+    ubuntu20*)
+        EMQX_DOCKERFILE="Dockerfile.ubuntu20.04.runner"
+        ;;
+    *)
+        echo "sorry, no support for $DISTRO yet"
+        exit 1
+esac
+
+if [ "$COMPILE" = '--compile' ]; then
+    make "$PROFILE"
+    sync
+fi
+
+export DOCKER_BUILDKIT=1
+docker build --build-arg PROFILE="${PROFILE}" \
+    -t "emqx/emqx:${PKG_VSN}-${DISTRO}" \
+    -f "$EMQX_DOCKERFILE" .

scripts/start-two-nodes-in-docker.sh

@@ -2,14 +2,6 @@
 
 set -euo pipefail
 
-## This script takes the first argument as docker image name,
-## starts two containers running with the built code mount
-## into docker containers.
-##
-## NOTE: containers are not instructed to rebuild emqx,
-##       Please use a docker image which is compatible with
-##       the docker host.
-##
 ## EMQX can only start with longname (https://erlang.org/doc/reference_manual/distributed.html)
 ## The host name part of EMQX's node name has to be static, this means we should either
 ## pre-assign static IP for containers, or ensure containers can communiate with each other by name
@@ -19,7 +11,6 @@ set -euo pipefail
 cd -P -- "$(dirname -- "$0")/.."
 
 IMAGE="${1}"
-PROJ_DIR="$(pwd)"
 
 NET='emqx.io'
 NODE1="node1.$NET"
@@ -35,23 +26,23 @@ docker network create "$NET"
 
 docker run -d -t --restart=always --name "$NODE1" \
   --net "$NET" \
+  -e EMQX_LOG__CONSOLE_HANDLER__LEVEL=debug \
   -e EMQX_NODE_NAME="emqx@$NODE1" \
   -e EMQX_NODE_COOKIE="$COOKIE" \
   -p 18083:18083 \
-  -v "$PROJ_DIR"/_build/emqx/rel/emqx:/built \
+  "$IMAGE"
-  "$IMAGE" sh -c 'cp -r /built /emqx && /emqx/bin/emqx console'
 
 docker run -d -t --restart=always --name "$NODE2" \
   --net "$NET" \
+  -e EMQX_LOG__CONSOLE_HANDLER__LEVEL=debug \
   -e EMQX_NODE_NAME="emqx@$NODE2" \
   -e EMQX_NODE_COOKIE="$COOKIE" \
   -p 18084:18083 \
-  -v "$PROJ_DIR"/_build/emqx/rel/emqx:/built \
+  "$IMAGE"
-  "$IMAGE" sh -c 'cp -r /built /emqx && /emqx/bin/emqx console'
 
 wait (){
   container="$1"
-  while ! docker exec "$container" /emqx/bin/emqx_ctl status >/dev/null 2>&1; do
+  while ! docker exec "$container" emqx_ctl status >/dev/null 2>&1; do
     echo -n '.'
     sleep 1
   done
@@ -61,4 +52,4 @@ wait $NODE1
 wait $NODE2
 echo
 
-docker exec $NODE1 /emqx/bin/emqx_ctl cluster join "emqx@$NODE2"
+docker exec $NODE1 emqx_ctl cluster join "emqx@$NODE2"