diff --git a/.gitignore b/.gitignore
index feb7369..5a1df5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,4 @@ __temp
 .DS_Store
 docklet.conf
 home.html
-src/migrations/
+src/utils/migrations/
diff --git a/src/com/migrations/README b/src/com/migrations/README
deleted file mode 100644
index 98e4f9c..0000000
--- a/src/com/migrations/README
+++ /dev/null
@@ -1 +0,0 @@
-Generic single-database configuration.
\ No newline at end of file
diff --git a/src/com/migrations/alembic.ini b/src/com/migrations/alembic.ini
deleted file mode 100644
index f8ed480..0000000
--- a/src/com/migrations/alembic.ini
+++ /dev/null
@@ -1,45 +0,0 @@
-# A generic, single database configuration.
-
-[alembic]
-# template used to generate migration files
-# file_template = %%(rev)s_%%(slug)s
-
-# set to 'true' to run the environment during
-# the 'revision' command, regardless of autogenerate
-# revision_environment = false
-
-
-# Logging configuration
-[loggers]
-keys = root,sqlalchemy,alembic
-
-[handlers]
-keys = console
-
-[formatters]
-keys = generic
-
-[logger_root]
-level = WARN
-handlers = console
-qualname =
-
-[logger_sqlalchemy]
-level = WARN
-handlers =
-qualname = sqlalchemy.engine
-
-[logger_alembic]
-level = INFO
-handlers =
-qualname = alembic
-
-[handler_console]
-class = StreamHandler
-args = (sys.stderr,)
-level = NOTSET
-formatter = generic
-
-[formatter_generic]
-format = %(levelname)-5.5s [%(name)s] %(message)s
-datefmt = %H:%M:%S
diff --git a/src/com/migrations/env.py b/src/com/migrations/env.py
deleted file mode 100644
index 4593816..0000000
--- a/src/com/migrations/env.py
+++ /dev/null
@@ -1,87 +0,0 @@
-from __future__ import with_statement
-from alembic import context
-from sqlalchemy import engine_from_config, pool
-from logging.config import fileConfig
-import logging
-
-# this is the Alembic Config object, which provides
-# access to the values within the .ini file in use.
-config = context.config
-
-# Interpret the config file for Python logging.
-# This line sets up loggers basically.
-fileConfig(config.config_file_name)
-logger = logging.getLogger('alembic.env')
-
-# add your model's MetaData object here
-# for 'autogenerate' support
-# from myapp import mymodel
-# target_metadata = mymodel.Base.metadata
-from flask import current_app
-config.set_main_option('sqlalchemy.url',
-                       current_app.config.get('SQLALCHEMY_DATABASE_URI'))
-target_metadata = current_app.extensions['migrate'].db.metadata
-
-# other values from the config, defined by the needs of env.py,
-# can be acquired:
-# my_important_option = config.get_main_option("my_important_option")
-# ... etc.
-
-
-def run_migrations_offline():
-    """Run migrations in 'offline' mode.
-
-    This configures the context with just a URL
-    and not an Engine, though an Engine is acceptable
-    here as well.  By skipping the Engine creation
-    we don't even need a DBAPI to be available.
-
-    Calls to context.execute() here emit the given string to the
-    script output.
-
-    """
-    url = config.get_main_option("sqlalchemy.url")
-    context.configure(url=url)
-
-    with context.begin_transaction():
-        context.run_migrations()
-
-
-def run_migrations_online():
-    """Run migrations in 'online' mode.
-
-    In this scenario we need to create an Engine
-    and associate a connection with the context.
-
-    """
-
-    # this callback is used to prevent an auto-migration from being generated
-    # when there are no changes to the schema
-    # reference: http://alembic.readthedocs.org/en/latest/cookbook.html
-    def process_revision_directives(context, revision, directives):
-        if getattr(config.cmd_opts, 'autogenerate', False):
-            script = directives[0]
-            if script.upgrade_ops.is_empty():
-                directives[:] = []
-                logger.info('No changes in schema detected.')
-
-    engine = engine_from_config(config.get_section(config.config_ini_section),
-                                prefix='sqlalchemy.',
-                                poolclass=pool.NullPool)
-
-    connection = engine.connect()
-    context.configure(connection=connection,
-                      target_metadata=target_metadata,
-                      process_revision_directives=process_revision_directives,
-                      **current_app.extensions['migrate'].configure_args)
-
-    try:
-        with context.begin_transaction():
-            context.run_migrations()
-    finally:
-        connection.close()
-
-if context.is_offline_mode():
-    run_migrations_offline()
-else:
-    run_migrations_online()
diff --git a/src/com/migrations/script.py.mako b/src/com/migrations/script.py.mako
deleted file mode 100644
index 9570201..0000000
--- a/src/com/migrations/script.py.mako
+++ /dev/null
@@ -1,22 +0,0 @@
-"""${message}
-
-Revision ID: ${up_revision}
-Revises: ${down_revision}
-Create Date: ${create_date}
-
-"""
-
-# revision identifiers, used by Alembic.
-revision = ${repr(up_revision)}
-down_revision = ${repr(down_revision)}
-
-from alembic import op
-import sqlalchemy as sa
-${imports if imports else ""}
-
-def upgrade():
-    ${upgrades if upgrades else "pass"}
-
-
-def downgrade():
-    ${downgrades if downgrades else "pass"}
diff --git a/src/com/migrations/versions/37dcfdb2604_.py b/src/com/migrations/versions/37dcfdb2604_.py
deleted file mode 100644
index c746d1c..0000000
--- a/src/com/migrations/versions/37dcfdb2604_.py
+++ /dev/null
@@ -1,116 +0,0 @@
-"""empty message
-
-Revision ID: 37dcfdb2604
-Revises: None
-Create Date: 2018-04-22 11:58:48.307690
-
-"""
-
-# revision identifiers, used by Alembic.
-revision = '37dcfdb2604'
-down_revision = None
-
-from alembic import op
-import sqlalchemy as sa
-
-
-def upgrade():
-    ### commands auto generated by Alembic - please adjust! ###
-    op.create_table('apply_msg',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('username', sa.String(length=10), nullable=True),
-    sa.Column('number', sa.Integer(), nullable=True),
-    sa.Column('reason', sa.String(length=600), nullable=True),
-    sa.Column('status', sa.String(length=10), nullable=True),
-    sa.Column('time', sa.DateTime(timezone=10), nullable=True),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_table('image',
-    sa.Column('imagename', sa.String(length=50), nullable=True),
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('hasPrivate', sa.Boolean(), nullable=True),
-    sa.Column('hasPublic', sa.Boolean(), nullable=True),
-    sa.Column('ownername', sa.String(length=20), nullable=True),
-    sa.Column('create_time', sa.DateTime(), nullable=True),
-    sa.Column('description', sa.Text(), nullable=True),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_table('v_cluster',
-    sa.Column('clusterid', sa.BigInteger(), autoincrement=False, nullable=False),
-    sa.Column('clustername', sa.String(length=50), nullable=True),
-    sa.Column('ownername', sa.String(length=20), nullable=True),
-    sa.Column('status', sa.String(length=10), nullable=True),
-    sa.Column('size', sa.Integer(), nullable=True),
-    sa.Column('nextcid', sa.Integer(), nullable=True),
-    sa.Column('create_time', sa.DateTime(), nullable=True),
-    sa.Column('start_time', sa.String(length=20), nullable=True),
-    sa.Column('proxy_server_ip', sa.String(length=20), nullable=True),
-    sa.Column('proxy_public_ip', sa.String(length=20), nullable=True),
-    sa.PrimaryKeyConstraint('clusterid')
-    )
-    op.create_table('v_node',
-    sa.Column('name', sa.String(length=100), nullable=False),
-    sa.Column('laststopcpuval', sa.Float(), nullable=True),
-    sa.Column('laststopruntime', sa.Integer(), nullable=True),
-    sa.Column('billing', sa.Integer(), nullable=True),
-    sa.PrimaryKeyConstraint('name')
-    )
-    op.create_table('billing_history',
-    sa.Column('node_name', sa.String(length=100), nullable=False),
-    sa.Column('vclusterid', sa.Integer(), nullable=True),
-    sa.Column('cpu', sa.Float(), nullable=True),
-    sa.Column('mem', sa.Float(), nullable=True),
-    sa.Column('disk', sa.Float(), nullable=True),
-    sa.Column('port', sa.Float(), nullable=True),
-    sa.ForeignKeyConstraint(['vclusterid'], ['v_cluster.clusterid'], ),
-    sa.PrimaryKeyConstraint('node_name')
-    )
-    op.create_table('container',
-    sa.Column('containername', sa.String(length=100), nullable=False),
-    sa.Column('hostname', sa.String(length=30), nullable=True),
-    sa.Column('ip', sa.String(length=20), nullable=True),
-    sa.Column('host', sa.String(length=20), nullable=True),
-    sa.Column('image', sa.String(length=50), nullable=True),
-    sa.Column('lastsave', sa.DateTime(), nullable=True),
-    sa.Column('setting_cpu', sa.Integer(), nullable=True),
-    sa.Column('setting_mem', sa.Integer(), nullable=True),
-    sa.Column('setting_disk', sa.Integer(), nullable=True),
-    sa.Column('vclusterid', sa.Integer(), nullable=True),
-    sa.ForeignKeyConstraint(['vclusterid'], ['v_cluster.clusterid'], ),
-    sa.PrimaryKeyConstraint('containername')
-    )
-    op.create_table('history',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('vnode', sa.String(length=100), nullable=True),
-    sa.Column('action', sa.String(length=30), nullable=True),
-    sa.Column('runningtime', sa.Integer(), nullable=True),
-    sa.Column('cputime', sa.Float(), nullable=True),
-    sa.Column('billing', sa.Integer(), nullable=True),
-    sa.Column('actionTime', sa.DateTime(), nullable=True),
-    sa.ForeignKeyConstraint(['vnode'], ['v_node.name'], ),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_table('port_mapping',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('node_name', sa.String(length=100), nullable=True),
-    sa.Column('node_ip', sa.String(length=20), nullable=True),
-    sa.Column('node_port', sa.Integer(), nullable=True),
-    sa.Column('host_port', sa.Integer(), nullable=True),
-    sa.Column('vclusterid', sa.Integer(), nullable=True),
-    sa.ForeignKeyConstraint(['vclusterid'], ['v_cluster.clusterid'], ),
-    sa.PrimaryKeyConstraint('id')
-    )
-    ### end Alembic commands ###
-
-
-def downgrade():
-    ### commands auto generated by Alembic - please adjust! ###
-    op.drop_table('port_mapping')
-    op.drop_table('history')
-    op.drop_table('container')
-    op.drop_table('billing_history')
-    op.drop_table('v_node')
-    op.drop_table('v_cluster')
-    op.drop_table('image')
-    op.drop_table('apply_msg')
-    ### end Alembic commands ###
diff --git a/src/com/env.py b/src/utils/env.py
similarity index 100%
rename from src/com/env.py
rename to src/utils/env.py
diff --git a/src/com/etcdlib.py b/src/utils/etcdlib.py
similarity index 100%
rename from src/com/etcdlib.py
rename to src/utils/etcdlib.py
diff --git a/src/com/imagemgr.py b/src/utils/imagemgr.py
similarity index 99%
rename from src/com/imagemgr.py
rename to src/utils/imagemgr.py
index 86f66fb..fc6a2bb 100755
--- a/src/com/imagemgr.py
+++ b/src/utils/imagemgr.py
@@ -20,10 +20,10 @@ from configparser import ConfigParser
 from io import StringIO
 import os,sys,subprocess,time,re,datetime,threading,random
 import xmlrpc.client
-from com.model import db, Image
+from utils.model import db, Image
 
-from com.log import logger
-from com import env, updatebase
+from utils.log import logger
+from utils import env, updatebase
 from worker.lvmtool import *
 import requests
 
diff --git a/src/com/log.py b/src/utils/log.py
similarity index 99%
rename from src/com/log.py
rename to src/utils/log.py
index 46568e1..721776e 100755
--- a/src/com/log.py
+++ b/src/utils/log.py
@@ -6,7 +6,7 @@ import argparse
 import sys
 import time  # this is only being used as part of the example
 import os
-from com import env
+from utils import env
 
 # logger should only be imported after initlogging has been called
 logger = None
diff --git a/src/com/logs.py b/src/utils/logs.py
similarity index 100%
rename from src/com/logs.py
rename to src/utils/logs.py
diff --git a/src/com/manage.py b/src/utils/manage.py
similarity index 100%
rename from src/com/manage.py
rename to src/utils/manage.py
diff --git a/src/com/model.py b/src/utils/model.py
similarity index 99%
rename from src/com/model.py
rename to src/utils/model.py
index fcc1ac9..250ad10 100755
--- a/src/com/model.py
+++ b/src/utils/model.py
@@ -34,7 +34,7 @@ import os, json
 from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
 from itsdangerous import SignatureExpired, BadSignature
 
-from com import env
+from utils import env
 
 fsdir = env.getenv('FS_PREFIX')
 
diff --git a/src/com/nettools.py b/src/utils/nettools.py
similarity index 99%
rename from src/com/nettools.py
rename to src/utils/nettools.py
index 98621b3..4f9e7f8 100755
--- a/src/com/nettools.py
+++ b/src/utils/nettools.py
@@ -1,8 +1,8 @@
 #!/usr/bin/python3
 
 import subprocess, threading
-from com.log import logger
-from com import env
+from utils.log import logger
+from utils import env
 
 class ipcontrol(object):
     @staticmethod
diff --git a/src/com/proxytool.py b/src/utils/proxytool.py
similarity index 97%
rename from src/com/proxytool.py
rename to src/utils/proxytool.py
index 69b071c..c3c2032 100755
--- a/src/com/proxytool.py
+++ b/src/utils/proxytool.py
@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 
 import requests, json
-from com import env
+from utils import env
 
 proxy_api_port = env.getenv("PROXY_API_PORT")
 proxy_control="http://localhost:"+ str(proxy_api_port) +"/api/routes"
diff --git a/src/com/tools.py b/src/utils/tools.py
similarity index 100%
rename from src/com/tools.py
rename to src/utils/tools.py
diff --git a/src/com/updatebase.py b/src/utils/updatebase.py
similarity index 98%
rename from src/com/updatebase.py
rename to src/utils/updatebase.py
index 7c54e4e..692db59 100755
--- a/src/com/updatebase.py
+++ b/src/utils/updatebase.py
@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 
 import os, shutil
-from com.log import logger
+from utils.log import logger
 
 def aufs_remove(basefs):
     try:
@@ -13,7 +13,7 @@ def aufs_remove(basefs):
         logger.error(e)
 
 def aufs_clean(basefs):
-    # clean the aufs mark 
+    # clean the aufs mark
     allfiles = os.listdir(basefs)
     for onefile in allfiles:
         if onefile[:4] == ".wh.":
diff --git a/src/worker/container.py b/src/worker/container.py
index 203e150..7f2d977 100755
--- a/src/worker/container.py
+++ b/src/worker/container.py
@@ -1,8 +1,8 @@
 #!/usr/bin/python3
 
 import subprocess, os, json
-from com.log import logger
-from com import env, imagemgr
+from utils.log import logger
+from utils import env, imagemgr
 from worker.lvmtool import sys_run, check_volume
 from worker.monitor import Container_Collector, History_Manager
 import lxc
diff --git a/src/worker/lvmtool.py b/src/worker/lvmtool.py
index 7a83933..ce4626c 100755
--- a/src/worker/lvmtool.py
+++ b/src/worker/lvmtool.py
@@ -1,8 +1,8 @@
 #!/usr/bin/python3
 
 import subprocess,os,time
-from com.log import logger
-from com import env
+from utils.log import logger
+from utils import env
 
 def sys_run(command,check=False):
     Ret = subprocess.run(command, stdout = subprocess.PIPE, stderr = subprocess.STDOUT, shell=True, check=check)
diff --git a/src/worker/monitor.py b/src/worker/monitor.py
index c0793b1..0291b1a 100755
--- a/src/worker/monitor.py
+++ b/src/worker/monitor.py
@@ -19,13 +19,13 @@ Design:Monitor mainly consists of three parts: Collectors, Master_Collector and
 
 import subprocess,re,os,psutil,math,sys
 import time,threading,json,traceback,platform
-from com import env, etcdlib
+from utils import env, etcdlib
 import lxc
 import xmlrpc.client
 from datetime import datetime
 
-from com.model import db,VNode,History,BillingHistory,VCluster,PortMapping
-from com.log import logger
+from utils.model import db,VNode,History,BillingHistory,VCluster,PortMapping
+from utils.log import logger
 from httplib2 import Http
 from urllib.parse import urlencode
 
diff --git a/src/worker/worker.py b/src/worker/worker.py
index a6305b3..7121090 100755
--- a/src/worker/worker.py
+++ b/src/worker/worker.py
@@ -4,22 +4,22 @@
 import sys
 if sys.path[0].endswith("worker"):
     sys.path[0] = sys.path[0][:-6]
-from com import env, tools
+from utils import env, tools
 config = env.getenv("CONFIG")
 #config = "/opt/docklet/local/docklet-running.conf"
 tools.loadenv(config)
 
 # must import logger after initlogging, ugly
-from com.log import initlogging
+from utils.log import initlogging
 initlogging("docklet-worker")
-from com.log import logger
+from utils.log import logger
 
 import xmlrpc.server, sys, time
 from socketserver import ThreadingMixIn
 import threading
-from com import etcdlib, proxytool
+from utils import etcdlib, proxytool
 from worker import container, monitor
-from com.nettools import netcontrol,ovscontrol,portcontrol
+from utils.nettools import netcontrol,ovscontrol,portcontrol
 from worker.lvmtool import new_group, recover_group
 from master import network
 
@@ -179,7 +179,7 @@ class Worker(object):
                 netcontrol.new_bridge('docklet-br')
             else:
                 if not netcontrol.bridge_exists('docklet-br'):
-                    logger.error("docklet-br not found")
+          utils       logger.error("docklet-br not found")
                     sys.exit(1)
             logger.info ("setup GRE tunnel to master %s" % self.master)
             #network.netsetup("gre", self.master)