diff --git a/Pipfile b/Pipfile
index e86ef9e..643fe50 100755
--- a/Pipfile
+++ b/Pipfile
@@ -13,8 +13,8 @@ pylint = "*"
 python-decouple = "*"
 sshtunnel = "*"
 bitmath = "*"
-etcd3-wrapper = "*"
 ucloud-common = "*"
+etcd3-wrapper = "*"
 
 [requires]
 python_version = "3.5"
diff --git a/Pipfile.lock b/Pipfile.lock
index 9f29807..76021d5 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -105,56 +105,13 @@
             ],
             "version": "==2.7"
         },
-        "etcd3": {
-            "hashes": [
-                "sha256:25a524b9f032c6631ff0097532907dea81243eaa63c3744510fd1598cc4e0e87"
-            ],
-            "version": "==0.10.0"
-        },
         "etcd3-wrapper": {
             "hashes": [
-                "sha256:0296a4cc7c75c6c432f54e95699271894716e99048c9987df55b6885ed9d5d07",
-                "sha256:8c4e90593ea6586978f0fbd484e46fd7d8554e06cb9804d34805a1f15a046b63"
+                "sha256:3680014d6593a564db7a389b3987e3ca107f466558b38cccbf268e852eb2cf93",
+                "sha256:a17df188020a007418edb5a4757f31ecc8b0df6b50ab6e7a17e978293379ac65"
             ],
             "index": "pypi",
-            "version": "==0.5.2"
-        },
-        "grpcio": {
-            "hashes": [
-                "sha256:1303578092f1f6e4bfbc354c04ac422856c393723d3ffa032fff0f7cb5cfd693",
-                "sha256:229c6b313cd82bec8f979b059d87f03cc1a48939b543fe170b5a9c5cf6a6bc69",
-                "sha256:3cd3d99a8b5568d0d186f9520c16121a0f2a4bcad8e2b9884b76fb88a85a7774",
-                "sha256:41cfb222db358227521f9638a6fbc397f310042a4db5539a19dea01547c621cd",
-                "sha256:43330501660f636fd6547d1e196e395cd1e2c2ae57d62219d6184a668ffebda0",
-                "sha256:45d7a2bd8b4f25a013296683f4140d636cdbb507d94a382ea5029a21e76b1648",
-                "sha256:47dc935658a13b25108823dabd010194ddea9610357c5c1ef1ad7b3f5157ebee",
-                "sha256:480aa7e2b56238badce0b9413a96d5b4c90c3bfbd79eba5a0501e92328d9669e",
-                "sha256:4a0934c8b0f97e1d8c18e76c45afc0d02d33ab03125258179f2ac6c7a13f3626",
-                "sha256:5624dab19e950f99e560400c59d87b685809e4cfcb2c724103f1ab14c06071f7",
-                "sha256:60515b1405bb3dadc55e6ca99429072dad3e736afcf5048db5452df5572231ff",
-                "sha256:610f97ebae742a57d336a69b09a9c7d7de1f62aa54aaa8adc635b38f55ba4382",
-                "sha256:64ea189b2b0859d1f7b411a09185028744d494ef09029630200cc892e366f169",
-                "sha256:686090c6c1e09e4f49585b8508d0a31d58bc3895e4049ea55b197d1381e9f70f",
-                "sha256:7745c365195bb0605e3d47b480a2a4d1baa8a41a5fd0a20de5fa48900e2c886a",
-                "sha256:79491e0d2b77a1c438116bf9e5f9e2e04e78b78524615e2ce453eff62db59a09",
-                "sha256:825177dd4c601c487836b7d6b4ba268db59787157911c623ba59a7c03c8d3adc",
-                "sha256:8a060e1f72fb94eee8a035ed29f1201ce903ad14cbe27bda56b4a22a8abda045",
-                "sha256:90168cc6353e2766e47b650c963f21cfff294654b10b3a14c67e26a4e3683634",
-                "sha256:94b7742734bceeff6d8db5edb31ac844cb68fc7f13617eca859ff1b78bb20ba1",
-                "sha256:962aebf2dd01bbb2cdb64580e61760f1afc470781f9ecd5fe8f3d8dcd8cf4556",
-                "sha256:9c8d9eacdce840b72eee7924c752c31b675f8aec74790e08cff184a4ea8aa9c1",
-                "sha256:af5b929debc336f6bab9b0da6915f9ee5e41444012aed6a79a3c7e80d7662fdf",
-                "sha256:b9cdb87fc77e9a3eabdc42a512368538d648fa0760ad30cf97788076985c790a",
-                "sha256:c5e6380b90b389454669dc67d0a39fb4dc166416e01308fcddd694236b8329ef",
-                "sha256:d60c90fe2bfbee735397bf75a2f2c4e70c5deab51cd40c6e4fa98fae018c8db6",
-                "sha256:d8582c8b1b1063249da1588854251d8a91df1e210a328aeb0ece39da2b2b763b",
-                "sha256:ddbf86ba3aa0ad8fed2867910d2913ee237d55920b55f1d619049b3399f04efc",
-                "sha256:e46bc0664c5c8a0545857aa7a096289f8db148e7f9cca2d0b760113e8994bddc",
-                "sha256:f6437f70ec7fed0ca3a0eef1146591bb754b418bb6c6b21db74f0333d624e135",
-                "sha256:f71693c3396530c6b00773b029ea85e59272557e9bd6077195a6593e4229892a",
-                "sha256:f79f7455f8fbd43e8e9d61914ecf7f48ba1c8e271801996fef8d6a8f3cc9f39f"
-            ],
-            "version": "==1.23.0"
+            "version": "==0.5.3"
         },
         "paramiko": {
             "hashes": [
@@ -163,27 +120,6 @@
             ],
             "version": "==2.6.0"
         },
-        "protobuf": {
-            "hashes": [
-                "sha256:00a1b0b352dc7c809749526d1688a64b62ea400c5b05416f93cfb1b11a036295",
-                "sha256:01acbca2d2c8c3f7f235f1842440adbe01bbc379fa1cbdd80753801432b3fae9",
-                "sha256:0a795bca65987b62d6b8a2d934aa317fd1a4d06a6dd4df36312f5b0ade44a8d9",
-                "sha256:0ec035114213b6d6e7713987a759d762dd94e9f82284515b3b7331f34bfaec7f",
-                "sha256:31b18e1434b4907cb0113e7a372cd4d92c047ce7ba0fa7ea66a404d6388ed2c1",
-                "sha256:32a3abf79b0bef073c70656e86d5bd68a28a1fbb138429912c4fc07b9d426b07",
-                "sha256:55f85b7808766e5e3f526818f5e2aeb5ba2edcc45bcccede46a3ccc19b569cb0",
-                "sha256:64ab9bc971989cbdd648c102a96253fdf0202b0c38f15bd34759a8707bdd5f64",
-                "sha256:64cf847e843a465b6c1ba90fb6c7f7844d54dbe9eb731e86a60981d03f5b2e6e",
-                "sha256:917c8662b585470e8fd42f052661fc66d59fccaae450a60044307dcbf82a3335",
-                "sha256:afed9003d7f2be2c3df20f64220c30faec441073731511728a2cb4cab4cd46a6",
-                "sha256:bf8e05d638b585d1752c5a84247134a0350d3a8b73d3632489a014a9f6f1e758",
-                "sha256:d831b047bd69becaf64019a47179eb22118a50dd008340655266a906c69c6417",
-                "sha256:de2760583ed28749ff885789c1cbc6c9c06d6de92fc825740ab99deb2f25ea4d",
-                "sha256:eabc4cf1bc19689af8022ba52fd668564a8d96e0d08f3b4732d26a64255216a4",
-                "sha256:fcff6086c86fb1628d94ea455c7b9de898afc50378042927a59df8065a79a549"
-            ],
-            "version": "==3.9.1"
-        },
         "pycparser": {
             "hashes": [
                 "sha256:a988718abfad80b6b157acce7bf130a30876d27603738ac39f140993246b25b3"
@@ -235,13 +171,6 @@
             "index": "pypi",
             "version": "==0.1.5"
         },
-        "tenacity": {
-            "hashes": [
-                "sha256:6a7511a59145c2e319b7d04ddd93c12d48cc3d3c8fa42c2846d33a620ee91f57",
-                "sha256:a4eb168dbf55ed2cae27e7c6b2bd48ab54dabaf294177d998330cf59f294c112"
-            ],
-            "version": "==5.1.1"
-        },
         "ucloud-common": {
             "hashes": [
                 "sha256:bb0ff7526368a80a9ac70cfb4bc71a9fe6df463f329d53baf24c7320e4b2ba00",