diff --git a/plugins/mysql/conf/my5.5.cnf b/plugins/mysql/conf/my5.5.cnf
index 5b257948b..3b9050e57 100644
--- a/plugins/mysql/conf/my5.5.cnf
+++ b/plugins/mysql/conf/my5.5.cnf
@@ -53,7 +53,7 @@ long_query_time=10
 #log_queries_not_using_indexes=on
 #log_slow_admin_statements=1
 #log_slow_slave_statements=1
-expire_logs_days=30
+expire_logs_days=7
 
 relay-log=mdserver
 relay-log-index=mdserver
diff --git a/plugins/mysql/conf/my5.6.cnf b/plugins/mysql/conf/my5.6.cnf
index 983e95fdb..09404b10d 100644
--- a/plugins/mysql/conf/my5.6.cnf
+++ b/plugins/mysql/conf/my5.6.cnf
@@ -56,7 +56,7 @@ long_query_time=10
 #log_queries_not_using_indexes=on
 #log_slow_admin_statements=1
 #log_slow_slave_statements=1
-expire_logs_days=30
+expire_logs_days=7
 
 relay-log=mdserver
 relay-log-index=mdserver
diff --git a/plugins/mysql/conf/my5.7.cnf b/plugins/mysql/conf/my5.7.cnf
index 95801b7cd..6c0e3d682 100644
--- a/plugins/mysql/conf/my5.7.cnf
+++ b/plugins/mysql/conf/my5.7.cnf
@@ -57,7 +57,7 @@ long_query_time=10
 #log_queries_not_using_indexes=1
 #log_slow_admin_statements=1
 #log_slow_slave_statements=1
-expire_logs_days=30
+expire_logs_days=7
 
 relay-log=mdserver
 relay-log-index=mdserver