diff --git a/.github/workflows/centos-ci.yml b/.github/workflows/centos-ci.yml
index d25557568..09c3fa474 100644
--- a/.github/workflows/centos-ci.yml
+++ b/.github/workflows/centos-ci.yml
@@ -16,9 +16,20 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Install Java and Maven
+      - name: Reset DNF repositories
+        run: |
+          cd /etc/yum.repos.d/
+          sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
+          sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
+      - name: Update DNF package index
+        run: dnf makecache
+      - name: Install Java and Maven with retry
+        run: |
+          for i in {1..5}; do
+            dnf install -y java-1.8.0-openjdk-devel maven && break || sleep 15
+          done
+      - name: Verify Java and Maven installation
         run: |
-          dnf install -y java-1.8.0-openjdk-devel maven
           java -version
           mvn -version
       - name: Cache Maven packages
diff --git a/auth/authentication/src/main/java/com/tencent/supersonic/auth/authentication/adaptor/DefaultUserAdaptor.java b/auth/authentication/src/main/java/com/tencent/supersonic/auth/authentication/adaptor/DefaultUserAdaptor.java
index 2bf387656..54b423ad6 100644
--- a/auth/authentication/src/main/java/com/tencent/supersonic/auth/authentication/adaptor/DefaultUserAdaptor.java
+++ b/auth/authentication/src/main/java/com/tencent/supersonic/auth/authentication/adaptor/DefaultUserAdaptor.java
@@ -12,6 +12,7 @@ import com.tencent.supersonic.auth.authentication.persistence.repository.UserRep
 import com.tencent.supersonic.auth.authentication.utils.AESEncryptionUtil;
 import com.tencent.supersonic.auth.authentication.utils.UserTokenUtils;
 import com.tencent.supersonic.common.util.ContextUtils;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.BeanUtils;
 import java.util.List;
 import java.util.Set;
@@ -20,6 +21,7 @@ import java.util.stream.Collectors;
 /**
  * DefaultUserAdaptor provides a default method to obtain user and organization information
  */
+@Slf4j
 public class DefaultUserAdaptor implements UserAdaptor {
 
     private List<UserDO> getUserDOList() {
@@ -76,7 +78,7 @@ public class DefaultUserAdaptor implements UserAdaptor {
         try {
             byte[] salt = AESEncryptionUtil.generateSalt(userDO.getName());
             userDO.setSalt(AESEncryptionUtil.getStringFromBytes(salt));
-            System.out.println("salt: " + userDO.getSalt());
+            log.info("salt: " + userDO.getSalt());
             userDO.setPassword(AESEncryptionUtil.encrypt(userReq.getPassword(), salt));
         } catch (Exception e) {
             throw new RuntimeException("password encrypt error, please try again");