diff --git a/sentinel-demo/sentinel-demo-log-logback/src/main/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogLoggerImpl.java b/sentinel-demo/sentinel-demo-log-logback/src/main/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogLoggerImpl.java
index 1f6c57dc..78ca6812 100644
--- a/sentinel-demo/sentinel-demo-log-logback/src/main/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogLoggerImpl.java
+++ b/sentinel-demo/sentinel-demo-log-logback/src/main/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogLoggerImpl.java
@@ -15,7 +15,7 @@
  */
 package com.alibaba.csp.sentinel.demo.log.logback;
 
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
+import com.alibaba.csp.sentinel.transport.log.CommandCenterLog;
 import com.alibaba.csp.sentinel.log.LogTarget;
 import com.alibaba.csp.sentinel.log.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/sentinel-demo/sentinel-demo-log-logback/src/test/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogTest.java b/sentinel-demo/sentinel-demo-log-logback/src/test/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogTest.java
index 5004131b..f8569586 100644
--- a/sentinel-demo/sentinel-demo-log-logback/src/test/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogTest.java
+++ b/sentinel-demo/sentinel-demo-log-logback/src/test/java/com/alibaba/csp/sentinel/demo/log/logback/CommandCenterLogTest.java
@@ -15,7 +15,7 @@
  */
 package com.alibaba.csp.sentinel.demo.log.logback;
 
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
+import com.alibaba.csp.sentinel.transport.log.CommandCenterLog;
 import org.junit.Assert;
 import org.junit.Rule;
 import org.junit.Test;
diff --git a/sentinel-core/src/main/java/com/alibaba/csp/sentinel/log/CommandCenterLog.java b/sentinel-transport/sentinel-transport-common/src/main/java/com/alibaba/csp/sentinel/transport/log/CommandCenterLog.java
similarity index 96%
rename from sentinel-core/src/main/java/com/alibaba/csp/sentinel/log/CommandCenterLog.java
rename to sentinel-transport/sentinel-transport-common/src/main/java/com/alibaba/csp/sentinel/transport/log/CommandCenterLog.java
index 17e6d26e..c4054c75 100755
--- a/sentinel-core/src/main/java/com/alibaba/csp/sentinel/log/CommandCenterLog.java
+++ b/sentinel-transport/sentinel-transport-common/src/main/java/com/alibaba/csp/sentinel/transport/log/CommandCenterLog.java
@@ -13,8 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.alibaba.csp.sentinel.log;
+package com.alibaba.csp.sentinel.transport.log;
 
+import com.alibaba.csp.sentinel.log.LoggerSpiProvider;
 import com.alibaba.csp.sentinel.log.jul.JavaLoggingAdapter;
 
 /**
diff --git a/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/NettyHttpCommandCenter.java b/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/NettyHttpCommandCenter.java
index 29adb01f..16db0df1 100755
--- a/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/NettyHttpCommandCenter.java
+++ b/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/NettyHttpCommandCenter.java
@@ -49,9 +49,8 @@ public class NettyHttpCommandCenter implements CommandCenter {
                 try {
                     server.start();
                 } catch (Exception ex) {
-                    RecordLog.info("Start netty server error", ex);
+                    RecordLog.warn("[NettyHttpCommandCenter] Failed to start Netty transport server", ex);
                     ex.printStackTrace();
-                    System.exit(-1);
                 }
             }
         });
diff --git a/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServer.java b/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServer.java
index 9f8f5776..4d57b4ea 100755
--- a/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServer.java
+++ b/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServer.java
@@ -21,7 +21,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 
 import com.alibaba.csp.sentinel.command.CommandHandler;
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
+import com.alibaba.csp.sentinel.transport.log.CommandCenterLog;
 import com.alibaba.csp.sentinel.log.RecordLog;
 import com.alibaba.csp.sentinel.transport.config.TransportConfig;
 import com.alibaba.csp.sentinel.util.StringUtil;
@@ -78,7 +78,7 @@ public final class HttpServer {
                     break;
                 } catch (Exception e) {
                     TimeUnit.MILLISECONDS.sleep(30);
-                    RecordLog.warn("[HttpServer] Netty server bind error, port={0}, retry={1}", newPort, retryCount);
+                    RecordLog.warn("[HttpServer] Netty server bind error, port={}, retry={}", newPort, retryCount);
                     retryCount ++;
                 }
             }
diff --git a/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServerHandler.java b/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServerHandler.java
index 36146c2f..a77e6a6b 100755
--- a/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServerHandler.java
+++ b/sentinel-transport/sentinel-transport-netty-http/src/main/java/com/alibaba/csp/sentinel/transport/command/netty/HttpServerHandler.java
@@ -25,7 +25,7 @@ import com.alibaba.csp.sentinel.command.CommandHandler;
 import com.alibaba.csp.sentinel.command.CommandRequest;
 import com.alibaba.csp.sentinel.command.CommandResponse;
 import com.alibaba.csp.sentinel.config.SentinelConfig;
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
+import com.alibaba.csp.sentinel.transport.log.CommandCenterLog;
 import com.alibaba.csp.sentinel.transport.command.codec.CodecRegistry;
 import com.alibaba.csp.sentinel.transport.command.codec.Encoder;
 import com.alibaba.csp.sentinel.transport.util.HttpCommandUtils;
diff --git a/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/SimpleHttpCommandCenter.java b/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/SimpleHttpCommandCenter.java
index 382f1398..484b8b69 100755
--- a/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/SimpleHttpCommandCenter.java
+++ b/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/SimpleHttpCommandCenter.java
@@ -34,7 +34,7 @@ import java.util.concurrent.TimeUnit;
 import com.alibaba.csp.sentinel.command.CommandHandler;
 import com.alibaba.csp.sentinel.command.CommandHandlerProvider;
 import com.alibaba.csp.sentinel.concurrent.NamedThreadFactory;
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
+import com.alibaba.csp.sentinel.transport.log.CommandCenterLog;
 import com.alibaba.csp.sentinel.transport.CommandCenter;
 import com.alibaba.csp.sentinel.transport.command.http.HttpEventTask;
 import com.alibaba.csp.sentinel.transport.config.TransportConfig;
diff --git a/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/http/HttpEventTask.java b/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/http/HttpEventTask.java
index ba65d46b..57ad7762 100755
--- a/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/http/HttpEventTask.java
+++ b/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/command/http/HttpEventTask.java
@@ -19,7 +19,7 @@ import com.alibaba.csp.sentinel.command.CommandHandler;
 import com.alibaba.csp.sentinel.command.CommandRequest;
 import com.alibaba.csp.sentinel.command.CommandResponse;
 import com.alibaba.csp.sentinel.config.SentinelConfig;
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
+import com.alibaba.csp.sentinel.transport.log.CommandCenterLog;
 import com.alibaba.csp.sentinel.transport.command.SimpleHttpCommandCenter;
 import com.alibaba.csp.sentinel.transport.command.exception.RequestException;
 import com.alibaba.csp.sentinel.transport.util.HttpCommandUtils;
@@ -126,7 +126,7 @@ public class HttpEventTask implements Runnable {
                     printWriter.flush();
                 }
             } catch (Exception e1) {
-                CommandCenterLog.warn("[SimpleHttpCommandCenter] Close server socket failed", e);
+                CommandCenterLog.warn("Failed to write error response", e1);
             }
         } finally {
             closeResource(inputStream);
diff --git a/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/heartbeat/client/SimpleHttpClient.java b/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/heartbeat/client/SimpleHttpClient.java
index 8c20ca75..6befd46f 100755
--- a/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/heartbeat/client/SimpleHttpClient.java
+++ b/sentinel-transport/sentinel-transport-simple-http/src/main/java/com/alibaba/csp/sentinel/transport/heartbeat/client/SimpleHttpClient.java
@@ -25,7 +25,6 @@ import java.nio.charset.Charset;
 import java.util.Map;
 import java.util.Map.Entry;
 
-import com.alibaba.csp.sentinel.log.CommandCenterLog;
 import com.alibaba.csp.sentinel.log.RecordLog;
 
 /**
@@ -125,7 +124,7 @@ public class SimpleHttpClient {
                 try {
                     socket.close();
                 } catch (Exception ex) {
-                    CommandCenterLog.info("Error when closing " + type + " request to " + socketAddress + ": ", ex);
+                    RecordLog.warn("Error when closing {} request to {} in SimpleHttpClient", type, socketAddress, ex);
                 }
             }
         }
@@ -177,7 +176,7 @@ public class SimpleHttpClient {
             }
             return paramsBuilder.toString();
         } catch (Throwable e) {
-            RecordLog.info("Encode request params fail", e);
+            RecordLog.warn("Encode request params fail", e);
             return "";
         }
     }