diff --git a/dm/tests/_utils/run_downstream_cluster b/dm/tests/_utils/run_downstream_cluster
index 36038c74e07..0d755cbd8d2 100755
--- a/dm/tests/_utils/run_downstream_cluster
+++ b/dm/tests/_utils/run_downstream_cluster
@@ -1,7 +1,7 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # tools to run a TiDB cluster
 # parameter 1: work directory
-set -eu
+set -eux
 WORK_DIR=$1
 
 export PD_PEER_ADDR="127.0.0.1:2380"
@@ -24,7 +24,7 @@ start_pd() {
 max-replicas = 1
 EOF
 
-	pd-server --version
+	bin/pd-server --version
 	mkdir -p "$WORK_DIR/pd"
 	bin/pd-server \
 		--client-urls "http://$PD_ADDR" \
@@ -32,14 +32,21 @@ EOF
 		--log-file "$WORK_DIR/pd.log" \
 		--config "$WORK_DIR/pd.toml" \
 		--data-dir "$WORK_DIR/pd" &
-	# wait until PD is online...
+	sleep 5
 	i=0
-	while ! curl "http://$PD_ADDR/pd/api/v1/version"; do
+	while true; do
+		response=$(curl -s -o /dev/null -w "%{http_code}" "http://$PD_ADDR/pd/api/v1/version" || echo "")
+		echo "curl response: $response"
+		if [ "$response" -eq 200 ]; then
+			echo 'Start PD success'
+			break
+		fi
 		i=$((i + 1))
 		if [ "$i" -gt 20 ]; then
 			echo 'Failed to start PD'
 			return 1
 		fi
+		echo 'Waiting for PD ready...'
 		sleep 3
 	done
 }
@@ -47,6 +54,7 @@ EOF
 start_tikv() {
 	echo "Starting TiKV..."
 	mkdir -p "$WORK_DIR/tikv"
+	bin/tikv-server --version
 	bin/tikv-server \
 		--pd "$PD_ADDR" \
 		-A "$TIKV_ADDR" \
@@ -54,18 +62,35 @@ start_tikv() {
 		--log-file "$WORK_DIR/tikv.log" \
 		--log-level info \
 		-s "$WORK_DIR/tikv" &
-	while ! curl "http://$PD_ADDR/pd/api/v1/cluster/status" | tee /dev/stderr | grep '"is_initialized": true'; do
+	sleep 5
+	i=0
+	while true; do
+		response=$(curl -s "http://$PD_ADDR/pd/api/v1/cluster/status" || echo "")
+
+		if [ -z "$response" ]; then
+			echo "Failed to connect to PD server"
+		else
+			echo "PD response: $response"
+			if echo "$response" | grep -q '"is_initialized": true'; then
+				echo "TiKV cluster initialized successfully"
+				break
+			fi
+		fi
+
 		i=$((i + 1))
 		if [ "$i" -gt 20 ]; then
-			echo 'Failed to initialize TiKV cluster'
+			echo 'Failed to initialize TiKV cluster after 20 attempts'
 			return 1
 		fi
+
+		echo 'Waiting for TiKV ready...'
 		sleep 5
 	done
 }
 
 start_tidb() {
 	echo "Starting TiDB..."
+	bin/tidb-server -V
 	bin/tidb-server \
 		-P 4000 \
 		--status 10080 \
@@ -73,14 +98,22 @@ start_tidb() {
 		--store tikv \
 		--path "$PD_ADDR" \
 		--log-file "$WORK_DIR/tidb.log" &
-
+	sleep 5
+	# wait until TiDB is online...
 	i=0
-	while ! curl "http://$TIDB_IP:10080/status"; do
+	while true; do
+		response=$(curl -s -o /dev/null -w "%{http_code}" "http://$TIDB_IP:10080/status" || echo "")
+		echo "curl response: $response"
+		if [ "$response" -eq 200 ]; then
+			echo 'Start TiDB success'
+			break
+		fi
 		i=$((i + 1))
 		if [ "$i" -gt 50 ]; then
 			echo 'Failed to start TiDB'
 			return 1
 		fi
+		echo 'Waiting for TiDB ready...'
 		sleep 3
 	done
 }
diff --git a/dm/tests/_utils/run_sql b/dm/tests/_utils/run_sql
index 555fc4a2337..66d91a40a28 100755
--- a/dm/tests/_utils/run_sql
+++ b/dm/tests/_utils/run_sql
@@ -18,5 +18,5 @@ fi
 if [[ $# -ge 4 ]]; then
 	echo "$1" | iconv -f utf8 -t $4 | mysql -u$user -h127.0.0.1 -P$2 -p$3 --default-character-set $4 -E >>$OUTFILE
 else
-	mysql -u$user -h127.0.0.1 -P$2 -p$3 --default-character-set utf8 -E -e "$1" >>$OUTFILE
+	MYSQL_PWD=$3 mysql -u$user -h127.0.0.1 -P$2 --default-character-set utf8 -E -e "$1" >>$OUTFILE
 fi
diff --git a/dm/tests/many_tables/run.sh b/dm/tests/many_tables/run.sh
index 3fc99f2c4bb..0ffb9a6a680 100644
--- a/dm/tests/many_tables/run.sh
+++ b/dm/tests/many_tables/run.sh
@@ -151,7 +151,9 @@ function run() {
 	pkill -hup tidb-server 2>/dev/null || true
 	wait_process_exit tidb-server
 	# now worker will process some binlog events, save table checkpoint and meet downstream error
+	echo "start incremental_data_2"
 	incremental_data_2
+	echo "finish incremental_data_2"
 	sleep 30
 
 	resume_num=$(grep 'unit process error' $WORK_DIR/worker1/log/dm-worker.log | wc -l)
diff --git a/dm/tests/requirements.txt b/dm/tests/requirements.txt
index f2293605cf1..8ca17f61940 100644
--- a/dm/tests/requirements.txt
+++ b/dm/tests/requirements.txt
@@ -1 +1,2 @@
 requests
+ipaddress
diff --git a/dm/tests/tls/run.sh b/dm/tests/tls/run.sh
index 3fc76387f38..b5046829b78 100644
--- a/dm/tests/tls/run.sh
+++ b/dm/tests/tls/run.sh
@@ -42,8 +42,13 @@ EOF
 		--log-file "$WORK_DIR/tidb.log" 2>&1 &
 
 	sleep 5
+
+	echo "show databases without TLS"
+	mysql -uroot -h127.0.0.1 -P4400 --default-character-set utf8 -E -e "SHOW DATABASES;"
+	echo "drop database tls with TLS"
 	# if execute failed, print tidb's log for debug
 	mysql -uroot -h127.0.0.1 -P4400 --default-character-set utf8 --ssl-ca $cur/conf/ca.pem --ssl-cert $cur/conf/dm.pem --ssl-key $cur/conf/dm.key -E -e "drop database if exists tls" || (cat $WORK_DIR/tidb.log && exit 1)
+	echo "drop database dm_meta with TLS"
 	mysql -uroot -h127.0.0.1 -P4400 --default-character-set utf8 --ssl-ca $cur/conf/ca.pem --ssl-cert $cur/conf/dm.pem --ssl-key $cur/conf/dm.key -E -e "drop database if exists dm_meta"
 }