diff --git a/.github/workflows/erlang.yml b/.github/workflows/erlang.yml
index 41e8e97..4272677 100644
--- a/.github/workflows/erlang.yml
+++ b/.github/workflows/erlang.yml
@@ -31,6 +31,11 @@ jobs:
     - name: Compile
       run: rebar3 compile
     - name: Run tests
+      env:
+        GT_TEST_HOST: ${{ secrets.GT_TEST_HOST }}
+        GT_TEST_DB: ${{ secrets.GT_TEST_DB }}
+        GT_TEST_USER: ${{ secrets.GT_TEST_USER }}
+        GT_TEST_PASSWD: ${{ secrets.GT_TEST_PASSWD }}
       run: |
         cat /tmp/greptimedb.log
         rebar3 ct -v --cover
@@ -40,4 +45,8 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+        GT_TEST_HOST: ${{ secrets.GT_TEST_HOST }}
+        GT_TEST_DB: ${{ secrets.GT_TEST_DB }}
+        GT_TEST_USER: ${{ secrets.GT_TEST_USER }}
+        GT_TEST_PASSWD: ${{ secrets.GT_TEST_PASSWD }}
       run: rebar3 as test coveralls send
diff --git a/src/greptimedb_worker.erl b/src/greptimedb_worker.erl
index e924009..2390dac 100644
--- a/src/greptimedb_worker.erl
+++ b/src/greptimedb_worker.erl
@@ -50,9 +50,11 @@
 init(Args) ->
     logger:debug("[GreptimeDB] genserver has started (~w)~n", [self()]),
     Endpoints = proplists:get_value(endpoints, Args),
+    SslOptions = proplists:get_value(ssl_opts, Args, []),
     Options = proplists:get_value(grpc_options, Args, #{connect_timeout => ?CONNECT_TIMEOUT}),
     Channels =
-        lists:map(fun({Schema, Host, Port}) -> {Schema, Host, Port, []} end, Endpoints),
+        lists:map(fun({Scheme, Host, Port}) -> {Scheme, Host, Port, ssl_options(Scheme, SslOptions)}
+                  end, Endpoints),
     Channel = list_to_atom(pid_to_list(self())),
     {ok, _} = grpcbox_channel_sup:start_child(Channel, Channels, Options),
     {ok, #state{channel = Channel, requests = #{ pending => queue:new(), pending_count => 0}}}.
@@ -60,6 +62,7 @@ init(Args) ->
 handle_call({handle, Request}, _From, #state{channel = Channel} = State) ->
     Ctx = ctx:with_deadline_after(?REQUEST_TIMEOUT, millisecond),
     Reply = greptime_v_1_greptime_database_client:handle(Ctx, Request, #{channel => Channel}),
+    logger:debug("[GreptimeDB] handle_call reply: ~w~n", [Reply]),
     case Reply of
         {ok, Resp, _} ->
             {reply, {ok, Resp}, State};
@@ -113,6 +116,19 @@ terminate(Reason, #state{channel = Channel} = State) ->
 %%%===================================================================
 %%% Helper functions
 %%%===================================================================
+ssl_options(https, []) ->
+    %% https://www.erlang.org/doc/man/ssl#type-client_option
+    [
+     {verify, verify_peer},
+     {cacerts, public_key:cacerts_get()},
+     %% hostname may be wildcard
+     {customize_hostname_check, [{match_fun,public_key:pkix_verify_hostname_match_fun(https)}]}
+    ];
+
+ssl_options(_, SslOptions) ->
+    SslOptions.
+
+
 now_() ->
     erlang:system_time(millisecond).
 
diff --git a/test/greptimedb_SUITE.erl b/test/greptimedb_SUITE.erl
index 5e8b597..b75422a 100644
--- a/test/greptimedb_SUITE.erl
+++ b/test/greptimedb_SUITE.erl
@@ -15,6 +15,7 @@ all() ->
      t_bench_perf,
      t_write_stream,
      t_async_write_batch,
+     t_insert_greptime_cloud,
      t_auth_error].
 
 %%[t_bench_perf].
@@ -110,23 +111,26 @@ t_insert_requests(_) ->
 
 t_insert_requests_with_timeunit(_) ->
     TsNano = 1705946037724448346,
-    Points = [#{fields => #{<<"temperature">> => 1},
-                tags =>
-                    #{<<"from">> => <<"mqttx_4b963a8e">>,
-                      <<"host">> => <<"serverA">>,
-                      <<"qos">> => "0",
-                      <<"device">> => <<"NO.1">>,
-                      <<"region">> => <<"hangzhou">>},
-                timestamp => TsNano}],
+    Points =
+        [#{fields => #{<<"temperature">> => 1},
+           tags =>
+               #{<<"from">> => <<"mqttx_4b963a8e">>,
+                 <<"host">> => <<"serverA">>,
+                 <<"qos">> => "0",
+                 <<"device">> => <<"NO.1">>,
+                 <<"region">> => <<"hangzhou">>},
+           timestamp => TsNano}],
     AuthInfo = {basic, #{username => "test", password => "test"}},
     Client = #{cli_opts => [{auth, AuthInfo}, {timeunit, second}]},
     Metric = #{table => "Test", timeunit => nanosecond},
     Request = greptimedb_encoder:insert_requests(Client, [{Metric, Points}]),
     #{header := #{dbname := _DbName, authorization := _Auth},
-      request := {inserts, #{inserts := [#{columns := Columns}]}}} = Request,
+      request := {inserts, #{inserts := [#{columns := Columns}]}}} =
+        Request,
     {value, TimestampColumn} =
         lists:search(fun(C) -> maps:get(column_name, C) == <<"greptime_timestamp">> end, Columns),
-    ?assertEqual([TsNano], maps:get(timestamp_nanosecond_values, maps:get(values, TimestampColumn))).
+    ?assertEqual([TsNano],
+                 maps:get(timestamp_nanosecond_values, maps:get(values, TimestampColumn))).
 
 t_write_failure(_) ->
     Metric = <<"temperatures">>,
@@ -477,3 +481,46 @@ t_async_write_batch(_) ->
 
     greptimedb:stop_client(Client),
     ok.
+
+t_insert_greptime_cloud(_) ->
+    Host = os:getenv("GT_TEST_HOST"),
+    DbName = os:getenv("GT_TEST_DB"),
+    UserName = os:getenv("GT_TEST_USER"),
+    PassWd = os:getenv("GT_TEST_PASSWD"),
+
+    if (Host == false) or (DbName == false) or (UserName == false) or (PassWd == false) ->
+           ct:print("Ignored t_insert_greptime_cloud..."),
+           ok;
+       true ->
+           ct:print("Running t_insert_greptime_cloud..."),
+           %% the endpoint scheme must be `https`.
+           Options =
+               [{endpoints, [{https, Host, 5001}]},
+                {pool, greptimedb_client_pool},
+                {pool_size, 5},
+                {pool_type, random},
+                {timeunit, ms},
+                {auth, {basic, #{username => UserName, password => PassWd}}}],
+           {ok, Client} = greptimedb:start_client(Options),
+           Metric = {DbName, <<"temperatures">>},
+           Points =
+               [#{fields => #{<<"temperature">> => 1},
+                  tags =>
+                      #{<<"from">> => <<"mqttx_4b963a8e">>,
+                        <<"host">> => <<"serverA">>,
+                        <<"qos">> => greptimedb_values:int64_value(0),
+                        <<"region">> => <<"hangzhou">>},
+                  timestamp => 1619775142098},
+                #{fields => #{<<"temperature">> => 2},
+                  tags =>
+                      #{<<"from">> => <<"mqttx_4b963a8e">>,
+                        <<"host">> => <<"serverB">>,
+                        <<"qos">> => greptimedb_values:int64_value(1),
+                        <<"region">> => <<"ningbo">>,
+                        <<"to">> => <<"kafka">>},
+                  timestamp => 1619775143098}],
+           {ok, #{response := {affected_rows, #{value := 2}}}} =
+               greptimedb:write(Client, Metric, Points),
+           greptimedb:stop_client(Client),
+           ok
+    end.