diff --git a/src/plugins/monitor/src/monitorMain.c b/src/plugins/monitor/src/monitorMain.c
index 76b322d01b9396cdc48f0af2d8e3ec3e5961b82b..ae8038e44498621b1dc764d1ffb0576b6d75da24 100644
--- a/src/plugins/monitor/src/monitorMain.c
+++ b/src/plugins/monitor/src/monitorMain.c
@@ -109,6 +109,11 @@ static void monitorStartSystemRetry() {
 }
 
 static void monitorInitConn(void *para, void *unused) {
+  if (dnodeGetDnodeId() <= 0) {
+    monitorStartSystemRetry();
+    return;
+  }
+  
   monitorPrint("starting to initialize monitor service ..");
   tsMonitorConn.state = MONITOR_STATE_INITIALIZING;
 
diff --git a/tests/script/jenkins/basic.txt b/tests/script/jenkins/basic.txt
index f253de09c41f664a6a40866e815c0c262fc0ba01..272183b26d4c432d80002e454c7809601af75820 100644
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
@@ -241,14 +241,14 @@ cd ../../../debug; make
 ./test.sh -u -f unique/account/user_create.sim
 ./test.sh -u -f unique/account/user_len.sim
 
-#./test.sh -u -f unique/big/balance.sim
-#slguan ./test.sh -u -f unique/big/maxvnodes.sim
+#liao wait ./test.sh -u -f unique/big/balance.sim
+#liao wait ./test.sh -u -f unique/big/maxvnodes.sim
 ./test.sh -u -f unique/big/tcp.sim
 
-#jeff ./test.sh -u -f unique/cluster/balance1.sim
-#jeff ./test.sh -u -f unique/cluster/balance2.sim
-#jeff ./test.sh -u -f unique/cluster/balance3.sim
-#./test.sh -u -f unique/cluster/cache.sim
+./test.sh -u -f unique/cluster/balance1.sim
+./test.sh -u -f unique/cluster/balance2.sim
+./test.sh -u -f unique/cluster/balance3.sim
+./test.sh -u -f unique/cluster/cache.sim
 
 ./test.sh -u -f unique/column/replica3.sim
 
diff --git a/tests/script/unique/cluster/balance1.sim b/tests/script/unique/cluster/balance1.sim
index 10e05971d7f0f01a1641f615cef2097417793e9a..424a80d25aa397837fd4598ccd0a48c77e27f140 100644
--- a/tests/script/unique/cluster/balance1.sim
+++ b/tests/script/unique/cluster/balance1.sim
@@ -77,7 +77,7 @@ print dnode2 $dnode2Vnodes
 if $dnode1Vnodes != 2 then
   return -1
 endi
-if $dnode2Vnodes != NULL then
+if $dnode2Vnodes != null then
   return -1
 endi
 
@@ -146,7 +146,7 @@ print dnode2 $dnode2Vnodes
 if $dnode1Vnodes != 3 then
   goto show4
 endi
-if $dnode2Vnodes != NULL then
+if $dnode2Vnodes != null then
   goto show4
 endi
 
@@ -229,7 +229,7 @@ print dnode3 $dnode3Vnodes
 if $dnode1Vnodes != 3 then
   goto show8
 endi
-if $dnode3Vnodes != NULL then
+if $dnode3Vnodes != null then
   goto show8
 endi
 
@@ -245,7 +245,7 @@ if $dnode1Role != master then
   return -1
 endi
 
-if $dnode3Role != NULL then
+if $dnode3Role != null then
   return -1
 endi
 
diff --git a/tests/script/unique/cluster/balance2.sim b/tests/script/unique/cluster/balance2.sim
index d741e03eec9723a7e191c35138836b784a8658bc..08fdd233e012f89a29bcaca938fb34f73aeb224a 100644
--- a/tests/script/unique/cluster/balance2.sim
+++ b/tests/script/unique/cluster/balance2.sim
@@ -131,7 +131,7 @@ print dnode3 $dnode3Vnodes
 if $dnode1Vnodes != 3 then
   goto show2
 endi
-if $dnode2Vnodes != NULL then
+if $dnode2Vnodes != null then
   goto show2
 endi
 if $dnode3Vnodes != 3 then
@@ -194,7 +194,7 @@ print dnode4 ==> $dnode4Role
 if $dnode1Role != master then
   return -1
 endi
-if $dnode2Role != NULL then
+if $dnode2Role != null then
   return -1
 endi
 if $dnode3Role != slave then
@@ -231,7 +231,7 @@ endi
 if $dnode4Vnodes != 3 then
   goto show4
 endi
-if $dnode3Vnodes != NULL then
+if $dnode3Vnodes != null then
   goto show4
 endi
 
@@ -248,10 +248,10 @@ print dnode4 ==> $dnode4Role
 if $dnode1Role != master then
   return -1
 endi
-if $dnode2Role != NULL then
+if $dnode2Role != null then
   return -1
 endi
-if $dnode3Role != NULL then
+if $dnode3Role != null then
   return -1
 endi
 
@@ -339,7 +339,7 @@ print dnode4 $dnode4Vnodes
 $dnode5Vnodes = $data2_5
 print dnode5 $dnode5Vnodes
 
-if $dnode1Vnodes != NULL then
+if $dnode1Vnodes != null then
   goto show6
 endi
 if $dnode4Vnodes != 3 then
diff --git a/tests/script/unique/cluster/balance3.sim b/tests/script/unique/cluster/balance3.sim
index e9847e21dac7af4deeb8e92b8ff59b2b5bc8a821..407adc7f3b61301d6a5d08047160ae0b4d3fac27 100644
--- a/tests/script/unique/cluster/balance3.sim
+++ b/tests/script/unique/cluster/balance3.sim
@@ -110,7 +110,7 @@ endi
 if $dnode3Vnodes != 3 then
   goto show1
 endi
-if $dnode4Vnodes != NULL then
+if $dnode4Vnodes != null then
   goto show1
 endi
 
@@ -166,7 +166,7 @@ print dnode4 $dnode4Vnodes
 if $dnode1Vnodes != 3 then
   goto show3
 endi
-if $dnode2Vnodes != NULL then
+if $dnode2Vnodes != null then
   goto show3
 endi
 if $dnode3Vnodes != 3 then
@@ -232,7 +232,7 @@ endi
 if $dnode5Vnodes != 3 then
   goto show5
 endi
-if $dnode3Vnodes != NULL then
+if $dnode3Vnodes != null then
   goto show5
 endi
 if $dnode4Vnodes != 3 then
@@ -298,7 +298,7 @@ endi
 if $dnode6Vnodes != 3 then
   goto show7
 endi
-if $dnode4Vnodes != NULL then
+if $dnode4Vnodes != null then
   goto show7
 endi
 
diff --git a/tests/script/unique/cluster/cache.sim b/tests/script/unique/cluster/cache.sim
index 41f9db69f37c6d2578c27cdbdde8015b5503b385..e23b40782870be00eb3f010cbcdba693e18b19da 100644
--- a/tests/script/unique/cluster/cache.sim
+++ b/tests/script/unique/cluster/cache.sim
@@ -4,26 +4,18 @@ system sh/stop_dnodes.sh
 system sh/deploy.sh -n dnode1 -i 1
 system sh/deploy.sh -n dnode2 -i 2
 
-system sh/cfg.sh -n dnode1 -c walLevel           -v 0
-system sh/cfg.sh -n dnode2 -c walLevel           -v 0
+system sh/cfg.sh -n dnode1 -c walLevel            -v 0
+system sh/cfg.sh -n dnode2 -c walLevel            -v 0
 system sh/cfg.sh -n dnode1 -c httpMaxThreads      -v 2
 system sh/cfg.sh -n dnode2 -c httpMaxThreads      -v 2
 system sh/cfg.sh -n dnode1 -c monitor             -v 1
-system sh/cfg.sh -n dnode2 -c http          -v 1
+system sh/cfg.sh -n dnode1 -c monitor             -v 2
+system sh/cfg.sh -n dnode2 -c http                -v 1
 system sh/cfg.sh -n dnode1 -c enableHttp          -v 1
 system sh/cfg.sh -n dnode2 -c monitor             -v 1
 system sh/cfg.sh -n dnode1 -c monitorInterval     -v 1
 system sh/cfg.sh -n dnode2 -c monitorInterval     -v 1
 
-system sh/cfg.sh -n dnode1 -c maxVnodeConnections -v 30000
-system sh/cfg.sh -n dnode2 -c maxVnodeConnections -v 30000
-system sh/cfg.sh -n dnode1 -c maxMgmtConnections  -v 30000
-system sh/cfg.sh -n dnode2 -c maxMgmtConnections  -v 30000
-system sh/cfg.sh -n dnode1 -c maxMeterConnections -v 30000
-system sh/cfg.sh -n dnode2 -c maxMeterConnections -v 30000
-system sh/cfg.sh -n dnode1 -c maxShellConns       -v 30000
-system sh/cfg.sh -n dnode2 -c maxShellConns       -v 30000
-
 system sh/exec.sh -n dnode1 -s start
 sleep 3000
 sql connect
@@ -45,13 +37,20 @@ sleep 3000
 system sh/exec.sh -n dnode2 -s start
 sql create dnode $hostname2
 
-sleep 20000
-sql select * from log.dn_192_168_0_1
+
+sleep 10000
+
+sql show log.tables;
+if $rows != 5 then
+  return -1
+endi
+
+sql select * from log.dn1
 print ===>rows $rows
 print $data00 $data01 $data02
 print $data10 $data11 $data12
 print $data20 $data21 $data22
-if $rows < 20 then
+if $rows < 10 then
   return -1
 endi