diff --git a/package.json b/package.json
index 1d4a7f5..fe8e677 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "@types/express": "^4.17.1",
     "@types/express-rate-limit": "^5.1.1",
     "@types/mongoose": "5.10.3",
+    "@types/redis": "^2.8.28",
     "ts-node": "^8.1.0",
     "ts-node-dev": "^1.0.0-pre.63",
     "typescript": "^3.4.5"
@@ -42,6 +43,7 @@
     "express-jwt": "^5.3.1",
     "express-rate-limit": "^5.2.3",
     "fs-jetpack": "^4.1.0",
-    "mongoose": "5.10.3"
+    "mongoose": "5.10.3",
+    "redis": "^2.8.0"
   }
 }
diff --git a/src/common/Debug.ts b/src/common/Debug.ts
index 095aba5..8a497dc 100644
--- a/src/common/Debug.ts
+++ b/src/common/Debug.ts
@@ -12,5 +12,7 @@ export const assistLog = debug('jc:assist');
 
 export const cardLog = debug('jc:card');
 
+export const sysLog = debug('jc:sys');
+
 export const error = debug('jc:error');
 error.log = console.error.bind(console);
diff --git a/src/common/WebApi.ts b/src/common/WebApi.ts
index 8088f72..dabe1bf 100644
--- a/src/common/WebApi.ts
+++ b/src/common/WebApi.ts
@@ -1,8 +1,6 @@
 import axios from 'axios'
-import { Config } from '../cfg/Config'
 import { debugRoom, error } from './Debug'
-
-let config: Config = require('../../config/config.json')
+import { Service } from '../service/Service'
 
 /**
  * 获取卡组详情
@@ -11,8 +9,9 @@ let config: Config = require('../../config/config.json')
  * @param {string} cardgroup
  * @return {Promise<AxiosResponse<any>>}
  */
-export function getCardGroup(accountid: string, heroid: number, cardgroup: string) {
-  return axios.get(`${ config.info_svr }/${ accountid }/group_info/${ heroid }/${ cardgroup }`)
+export async function getCardGroup(accountid: string, heroid: number, cardgroup: string) {
+  const infoHost = await new Service().getInfoSvr()
+  return axios.get(`${ infoHost }/${ accountid }/group_info/${ heroid }/${ cardgroup }`)
     .then(function (response) {
       let res = response.data
       if (res.errcode) {
@@ -23,8 +22,9 @@ export function getCardGroup(accountid: string, heroid: number, cardgroup: strin
     })
 }
 
-export function getUserInfo(accountid: string, isMatch: boolean) {
-  return axios.post(`${ config.info_svr }/${ accountid }/uinfo`, {isMatch})
+export async function getUserInfo(accountid: string, isMatch: boolean) {
+  const infoHost = await new Service().getInfoSvr()
+  return axios.post(`${ infoHost }/${ accountid }/uinfo`, {isMatch})
     .then(function (response) {
       let res = response.data
       if (res.errcode) {
@@ -35,9 +35,10 @@ export function getUserInfo(accountid: string, isMatch: boolean) {
     })
 }
 
-export function randomUserInfo(min: number, max: number, accounts: string[]) {
+export async function randomUserInfo(min: number, max: number, accounts: string[]) {
   const data = {min, max, accounts}
-  return axios.post(`${ config.info_svr }/randomrobot`, data)
+  const infoHost = await new Service().getInfoSvr()
+  return axios.post(`${ infoHost }/randomrobot`, data)
     .then(function (response) {
       let res = response.data
       if (res.errcode) {
@@ -54,9 +55,10 @@ export function randomUserInfo(min: number, max: number, accounts: string[]) {
  * @param {number | string} heroid
  * @return {Promise<AxiosResponse<any>>}
  */
-export function requestUnlockHero(accountid: string, heroid: number | string) {
+export async function requestUnlockHero(accountid: string, heroid: number | string) {
   let data = { 'type': 0 }
-  return axios.post(`${ config.info_svr }/${ accountid }/hero/unlock/${ heroid }`, data)
+  const infoHost = await new Service().getInfoSvr()
+  return axios.post(`${ infoHost }/${ accountid }/hero/unlock/${ heroid }`, data)
 }
 
 /**
@@ -65,10 +67,10 @@ export function requestUnlockHero(accountid: string, heroid: number | string) {
  */
 export async function reportGameResult(data: any) {
   let dataStr = JSON.stringify(data)
-
+  const infoHost = await new Service().getInfoSvr()
   let reqConfig = {
     method: 'post',
-    url: `${ config.info_svr }/record/save`,
+    url: `${ infoHost }/record/save`,
     headers: {
       'Content-Type': 'application/json'
     },
@@ -88,9 +90,13 @@ export async function reportGameResult(data: any) {
 export async function useItem(accountid: string, itemid: number, count: number) {
   const data = { itemid, count }
   let dataStr = JSON.stringify(data)
+  const infoHost = await new Service().getInfoSvr()
+  if (!infoHost) {
+    error('no info host found!!!')
+  }
   let reqConfig = {
     method: 'post',
-    url: `${ config.info_svr }/${ accountid }/useitem`,
+    url: `${ infoHost }/${ accountid }/useitem`,
     headers: {
       'Content-Type': 'application/json'
     },
@@ -109,7 +115,8 @@ export async function useItem(accountid: string, itemid: number, count: number)
  */
 export async function checkMatchTicket(accountid: string, matchid: string) {
   const data = { matchid }
-  const url = `${ config.info_svr }/${ accountid }/beginmatch`
+  const infoHost = await new Service().getInfoSvr()
+  const url = `${ infoHost }/${ accountid }/beginmatch`
   let reqConfig = {
     method: 'post',
     url,
@@ -135,8 +142,12 @@ export async function checkMatchTicket(accountid: string, matchid: string) {
  * 创建机器人
  * @param data
  */
-export function createRobot(data: any) {
-  axios.get('http://127.0.0.1:2500/robot/create', {
+export async function createRobot(data: any) {
+  const robotHost = await new Service().getRobotSvr()
+  if (!robotHost) {
+    error('no robot host found!!!')
+  }
+  axios.get(`${robotHost}/robot/create`, {
     params: data
   }).then((res) => {
     debugRoom(`caeate robot result: `, res.data)
diff --git a/src/index.ts b/src/index.ts
index 5673fd9..895a3a4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -10,6 +10,8 @@ import {initData} from "./common/GConfig";
 import {Config} from "./cfg/Config";
 import {RankedLobbyRoom} from "./rooms/RankedLobbyRoom";
 import { MongooseDriver } from 'colyseus/lib/matchmaker/drivers/MongooseDriver'
+import { Service } from './service/Service'
+import { RedisClient } from './redis/RedisClient'
 
 require('./rooms/MSender');
 require('./rooms/RoomExtMethod');
@@ -26,8 +28,8 @@ app.use(cors());
 app.use(express.json())
 initData();
 const server = http.createServer(app);
-let port
-let gameServer
+let port: number
+let gameServer: Server
 if (isProd) {
   port = Number(process.env.PORT) + Number(process.env.NODE_APP_INSTANCE);
   gameServer = new Server({
@@ -70,10 +72,18 @@ app.use("/matchmake/", apiLimiter);
 // see https://expressjs.com/en/guide/behind-proxies.html
 app.set('trust proxy', 1);
 
+let opts = {url: config.redis}
+new RedisClient(opts)
+const services = new Service()
 gameServer.onShutdown(function () {
   console.log("master process is being shut down!");
   //TODO:: 保存所有数据至db, 重启时恢复
 });
-gameServer.listen(port).then(() => {
-});
-console.log(`Listening on ws://localhost:${port}`)
+services.registSelf(port)
+  .then(() => {
+    return gameServer.listen(port)
+  }).then(() => {
+    console.log(`Listening on ws://localhost:${port}`)
+  });
+
+
diff --git a/src/redis/RedisClient.ts b/src/redis/RedisClient.ts
new file mode 100644
index 0000000..0eac011
--- /dev/null
+++ b/src/redis/RedisClient.ts
@@ -0,0 +1,273 @@
+import redis from 'redis';
+import { promisify } from 'util';
+import { singleton } from '../decorators/singleton.decorator'
+
+type Callback = (...args: any[]) => void;
+
+@singleton
+export class RedisClient {
+  public pub: redis.RedisClient;
+  public sub: redis.RedisClient;
+
+  protected subscribeAsync: any;
+  protected unsubscribeAsync: any;
+  protected publishAsync: any;
+
+  protected subscriptions: { [channel: string]: Callback[] } = {};
+
+  protected smembersAsync: any;
+  protected sismemberAsync: any;
+  protected hgetAsync: any;
+  protected hlenAsync: any;
+  protected pubsubAsync: any;
+  protected incrAsync: any;
+  protected decrAsync: any;
+
+  constructor(opts?: redis.ClientOpts) {
+    this.sub = redis.createClient(opts);
+    this.pub = redis.createClient(opts);
+
+    // no listener limit
+    this.sub.setMaxListeners(0);
+
+    // create promisified pub/sub methods.
+    this.subscribeAsync = promisify(this.sub.subscribe).bind(this.sub);
+    this.unsubscribeAsync = promisify(this.sub.unsubscribe).bind(this.sub);
+
+    this.publishAsync = promisify(this.pub.publish).bind(this.pub);
+
+    // create promisified redis methods.
+    this.smembersAsync = promisify(this.pub.smembers).bind(this.pub);
+    this.sismemberAsync = promisify(this.pub.sismember).bind(this.pub);
+    this.hlenAsync = promisify(this.pub.hlen).bind(this.pub);
+    this.hgetAsync = promisify(this.pub.hget).bind(this.pub);
+    this.pubsubAsync = promisify(this.pub.pubsub).bind(this.pub);
+    this.decrAsync = promisify(this.pub.decr).bind(this.pub);
+    this.incrAsync = promisify(this.pub.incr).bind(this.pub);
+  }
+
+  public async subscribe(topic: string, callback: Callback) {
+    if (!this.subscriptions[topic]) {
+      this.subscriptions[topic] = [];
+    }
+
+    this.subscriptions[topic].push(callback);
+
+    if (this.sub.listeners('message').length === 0) {
+      this.sub.addListener('message', this.handleSubscription);
+    }
+
+    await this.subscribeAsync(topic);
+
+    return this;
+  }
+
+  public async unsubscribe(topic: string, callback?: Callback) {
+    if (callback) {
+      const index = this.subscriptions[topic].indexOf(callback);
+      this.subscriptions[topic].splice(index, 1);
+
+    } else {
+      this.subscriptions[topic] = [];
+    }
+
+    if (this.subscriptions[topic].length === 0) {
+      await this.unsubscribeAsync(topic);
+    }
+
+    return this;
+  }
+
+  public async publish(topic: string, data: any) {
+    if (data === undefined) {
+      data = false;
+    }
+
+    await this.publishAsync(topic, JSON.stringify(data));
+  }
+
+  public async exists(roomId: string): Promise<boolean> {
+    return (await this.pubsubAsync('channels', roomId)).length > 0;
+  }
+
+  public async setex(key: string, value: string, seconds: number) {
+    return new Promise((resolve) =>
+      this.pub.setex(key, seconds, value, resolve));
+  }
+
+  public async expire(key: string, seconds: number) {
+    return new Promise((resolve) =>
+      this.pub.expire(key, seconds, resolve));
+  }
+
+  public async get(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.get(key, (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async del(roomId: string) {
+    return new Promise((resolve) => {
+      this.pub.del(roomId, resolve);
+    });
+  }
+
+  public async sadd(key: string, value: any) {
+    return new Promise((resolve) => {
+      this.pub.sadd(key, value, resolve);
+    });
+  }
+
+  public async smembers(key: string): Promise<string[]> {
+    return await this.smembersAsync(key);
+  }
+
+  public async sismember(key: string, field: string): Promise<number> {
+    return await this.sismemberAsync(key, field);
+  }
+
+  public async srem(key: string, value: any) {
+    return new Promise((resolve) => {
+      this.pub.srem(key, value, resolve);
+    });
+  }
+
+  public async scard(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.scard(key, (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+  public async srandmember(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.srandmember(key, (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async sinter(...keys: string[]) {
+    return new Promise<string[]>((resolve, reject) => {
+      this.pub.sinter(...keys, (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async zadd(key: string, value: any, member: string) {
+    return new Promise((resolve) => {
+      this.pub.zadd(key, value, member, resolve);
+    });
+  }
+  public async zrangebyscore(key: string, min: number, max: number) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrangebyscore(key, min, max, 'withscores', (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async zcard(key: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.zcard(key,  (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async zrevrank(key: string, member: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrank(key, member,  (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async zscore(key: string, member: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.zscore(key, member,  (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+
+  public async zrevrange(key: string, start: number, end: number) {
+    return new Promise((resolve, reject) => {
+      this.pub.zrevrange(key, start, end, 'withscores', (err, data) => {
+        if (err) { return reject(err); }
+        resolve(data);
+      });
+    });
+  }
+
+  public async hset(key: string, field: string, value: string) {
+    return new Promise((resolve) => {
+      this.pub.hset(key, field, value, resolve);
+    });
+  }
+
+  public async hincrby(key: string, field: string, value: number) {
+    return new Promise((resolve) => {
+      this.pub.hincrby(key, field, value, resolve);
+    });
+  }
+
+  public async hget(key: string, field: string) {
+    return await this.hgetAsync(key, field);
+  }
+
+  public async hgetall(key: string) {
+    return new Promise<{ [key: string]: string }>((resolve, reject) => {
+      this.pub.hgetall(key, (err, values) => {
+        if (err) { return reject(err); }
+        resolve(values);
+      });
+    });
+  }
+
+  public async hdel(key: string, field: string) {
+    return new Promise((resolve, reject) => {
+      this.pub.hdel(key, field, (err, ok) => {
+        if (err) { return reject(err); }
+        resolve(ok);
+      });
+    });
+  }
+
+  public async hlen(key: string): Promise<number> {
+    return await this.hlenAsync(key);
+  }
+
+  public async incr(key: string): Promise<number> {
+    return await this.incrAsync(key);
+  }
+
+  public async decr(key: string): Promise<number> {
+    return await this.decrAsync(key);
+  }
+
+  protected handleSubscription = (channel: string, message: string) => {
+    if (this.subscriptions[channel]) {
+      for (let i = 0, l = this.subscriptions[channel].length; i < l; i++) {
+        try {
+          this.subscriptions[channel][i](JSON.parse(message));
+        } catch (err) {
+          this.subscriptions[channel][i](message);
+        }
+
+      }
+    }
+  }
+}
diff --git a/src/robot.ts b/src/robot.ts
index 4d02fbc..82eb9c0 100644
--- a/src/robot.ts
+++ b/src/robot.ts
@@ -4,19 +4,42 @@ import cors from "cors";
 import bodyParser from 'body-parser';
 import mainCtrl from './robot/main.controller';
 import {initData} from "./common/GConfig";
+import {
+  registerGracefulShutdown,
+  registService,
+  unRegistService
+} from './utils/system.util'
+import { error } from './common/Debug'
+import { Config } from './cfg/Config'
+import { RedisClient } from './redis/RedisClient'
 
 require('./common/Extend');
 const app = express()
 
 const port = Number(process.env.PORT || 2500);
 
+let config: Config = require('../config/config.json');
+const isProd = process.env.NODE_ENV === 'production'
 initData();
 app.use(cors());
 app.use(express.json());
 app.use(bodyParser.json({}));
 
 app.use('/robot', mainCtrl);
+let gracefullyShutdown = function (exit: boolean = true, err?: Error) {
+    unRegistService(port).then(()=>{})
+      .catch(err => {
+          error('error unregistservice')
+      })
+}
 
-app.listen(port, function () {
+let opts = {url: config.redis}
+new RedisClient(opts)
+
+app.listen(port, async function () {
+    if (isProd) {
+      await registerGracefulShutdown((err) => gracefullyShutdown(true, err));
+      await registService(port)
+    }
     console.log(`App is listening on port ${port}!`);
 });
diff --git a/src/rooms/GeneralRoom.ts b/src/rooms/GeneralRoom.ts
index 37908ff..e82f038 100644
--- a/src/rooms/GeneralRoom.ts
+++ b/src/rooms/GeneralRoom.ts
@@ -21,6 +21,7 @@ import {GameRestartCommand} from "./commands/GameRestartCommand";
 import {RobotClient} from "../robot/RobotClient";
 import {ChangePetCommand} from "./commands/ChangePetCommand";
 import {createRobot} from "../common/WebApi";
+import { Service } from '../service/Service'
 
 export class GeneralRoom extends Room {
   dispatcher = new Dispatcher(this);
@@ -250,13 +251,14 @@ export class GeneralRoom extends Room {
     }
   }
 
-  addRobot(playerId?: string) {
+  async addRobot(playerId?: string) {
+    const host = new Service().selfHost
     let data = {
-      host: 'ws://127.0.0.1:2567',
+      host,
       room: this.roomId,
       sessionId: playerId
     }
-    createRobot(data);
+    await createRobot(data);
   }
 
   addAssistClient(sessionId: string) {
diff --git a/src/rooms/commands/GameResultCommand.ts b/src/rooms/commands/GameResultCommand.ts
index de5e7e5..15e016c 100644
--- a/src/rooms/commands/GameResultCommand.ts
+++ b/src/rooms/commands/GameResultCommand.ts
@@ -177,11 +177,11 @@ export class GameResultCommand extends Command<CardGameState, {}> {
                 await self.room.unlock();
                 await self.room.setPrivate(false);
                 //开启匹配定时, 长时间没匹配到人的话, 添加机器人
-                let timeOutWaitingPlayer = function () {
+                let timeOutWaitingPlayer = async function () {
                     let count = self.room.maxClients - self.room.clientCount();
                     if (count > 0) {
                         for (let i = 0; i < count; i++) {
-                            self.room.addRobot();
+                            await self.room.addRobot();
                         }
                     }
                 }
diff --git a/src/rooms/commands/OnJoinCommand.ts b/src/rooms/commands/OnJoinCommand.ts
index 582040d..0e54420 100644
--- a/src/rooms/commands/OnJoinCommand.ts
+++ b/src/rooms/commands/OnJoinCommand.ts
@@ -69,11 +69,11 @@ export class OnJoinCommand extends Command<CardGameState, {
     } else {
       if (this.room.clientCount() == 1) {
         // 正常的匹配逻辑进入的第一个玩家, 开启定时, 超过设定时间人没齐的话, 添加机器人
-        let timeOutWaitingPlayer = function () {
+        let timeOutWaitingPlayer = async function () {
           let count = self.room.maxClients - self.room.clientCount();
           if (count > 0) {
             for (let i = 0; i < count; i++) {
-              self.room.addRobot();
+              await self.room.addRobot();
             }
           }
         }
@@ -92,7 +92,7 @@ export class OnJoinCommand extends Command<CardGameState, {
         && this.state.players.size >= this.room.maxClients - this.room.robotCount) {
         for (let i = 0; i < this.room.robotCount; i++) {
           this.room.robotCount --;
-          self.room.addRobot();
+          await self.room.addRobot();
         }
       }
     }
diff --git a/src/service/Service.ts b/src/service/Service.ts
new file mode 100644
index 0000000..3062880
--- /dev/null
+++ b/src/service/Service.ts
@@ -0,0 +1,115 @@
+import { singleton } from '../decorators/singleton.decorator'
+import { getNodeList, listen, Action } from './discovery'
+import { error, sysLog } from '../common/Debug'
+import { Config } from '../cfg/Config'
+import ip from 'internal-ip'
+const config: Config = require('../../config/config.json')
+const isProd = process.env.NODE_ENV === 'production'
+@singleton
+export class Service {
+  /**
+   * info server的key名
+   * @type {string}
+   */
+  public static readonly INFO_NODE = 'poker:infosvr'
+  /**
+   * info server发布的channel
+   * @type {string}
+   */
+  public static readonly INFO_CHANNEL = 'poker:infosvr:discovery'
+  /**
+   * robot server的key名
+   * @type {string}
+   */
+  public static readonly ROBOT_NODE = 'poker:robot'
+  /**
+   * robot server发布的channel
+   * @type {string}
+   */
+  public static readonly ROBOT_CHANNEL = 'poker:robot:discovery'
+
+  public selfHost: string
+
+  public serviceMap: Map<string, string[]> = new Map()
+
+
+  constructor() {
+    this.serviceMap.set(Service.INFO_NODE, [])
+    this.serviceMap.set(Service.ROBOT_NODE, [])
+    if (isProd) {
+      this.discoveryServices()
+    }
+  }
+
+  public discoveryServices() {
+    listen(Service.INFO_CHANNEL, (action: Action, address: string) => {
+      sysLog("LISTEN: info channel ", action, address);
+      if (action === 'add') {
+        this.register(Service.INFO_NODE, address);
+
+      } else if (action == 'remove') {
+        this.unregister(Service.INFO_NODE, address);
+      }
+    }).then(() => {
+      sysLog('subscribe to info channel success')
+    }).catch(err => {
+      sysLog('subscribe to info channel error', err)
+    })
+    listen(Service.ROBOT_CHANNEL, (action: Action, address: string) => {
+      sysLog("LISTEN: robot channel", action, address);
+      if (action === 'add') {
+        this.register(Service.ROBOT_NODE, address);
+
+      } else if (action == 'remove') {
+        this.unregister(Service.ROBOT_NODE, address);
+      }
+    }).then(() => {
+      sysLog('subscribe to robot channel success')
+    }).catch(err => {
+      sysLog('subscribe to robot channel error', err)
+    })
+  }
+
+  public async getInfoSvr() {
+    let key = Service.INFO_NODE
+    if (!this.serviceMap.has(key) || this.serviceMap.get(key).length == 0) {
+      let svrList = await getNodeList(key)
+      this.serviceMap.set(key, svrList)
+    }
+    let svrList = this.serviceMap.get(key)
+    if (svrList.length == 0 || !isProd) {
+      error('no info service found')
+      return config.info_svr
+    }
+    return 'http://' + svrList.randomOne()+'/svr'
+  }
+
+  public async getRobotSvr() {
+    let key = Service.ROBOT_NODE
+    if (!this.serviceMap.has(key) || this.serviceMap.get(key).length == 0) {
+      let svrList = await getNodeList(key)
+      this.serviceMap.set(key, svrList)
+    }
+    let svrList = this.serviceMap.get(key)
+    if (svrList.length == 0 || !isProd) {
+      error('no robot service found')
+      return 'http://127.0.0.1:2500'
+    }
+    return 'http://' + svrList.randomOne()
+  }
+
+  private register(type: string, address: string) {
+    let svrList = this.serviceMap.get(type)
+    svrList.pushOnce(address)
+  }
+  private unregister(type: string, address: string) {
+    let svrList = this.serviceMap.get(type)
+    svrList.removeEx(address)
+  }
+
+  public async registSelf(port: number) {
+    const host = process.env.SELF_HOSTNAME || await ip.v4();
+    this.selfHost = `ws://${host}:${port}`
+  }
+
+}
diff --git a/src/service/discovery.ts b/src/service/discovery.ts
new file mode 100644
index 0000000..74b6706
--- /dev/null
+++ b/src/service/discovery.ts
@@ -0,0 +1,16 @@
+import { RedisClient } from '../redis/RedisClient'
+
+export type Action = 'add' | 'remove';
+
+
+export async function getNodeList(type: string): Promise<string []> {
+  const nodes: string[] = await new RedisClient().smembers(type);
+  return nodes
+}
+
+export async function listen(channel: string, cb: (action: Action, address: string) => void) {
+  await new RedisClient().subscribe(channel, function (message: any){
+    const [action, address] = message.split(",");
+    cb(action, address);
+  })
+}
diff --git a/src/utils/system.util.ts b/src/utils/system.util.ts
new file mode 100644
index 0000000..627450e
--- /dev/null
+++ b/src/utils/system.util.ts
@@ -0,0 +1,39 @@
+import { RedisClient } from '../redis/RedisClient'
+import ip from 'internal-ip'
+import { Service } from '../service/Service'
+
+const signals: NodeJS.Signals[] = ['SIGINT', 'SIGTERM', 'SIGUSR2']
+
+
+export function registerGracefulShutdown(callback: (err?: Error) => void) {
+  /**
+   * Gracefully shutdown on uncaught errors
+   */
+  process.on('uncaughtException', (err) => {
+    console.error(err)
+    callback(err)
+  })
+
+  signals.forEach((signal) => {
+    process.once(signal, () => callback())
+  })
+}
+
+async function getNodeAddress(port: number) {
+  const host = process.env.SELF_HOSTNAME || await ip.v4()
+  return `${ host }:${ port }`
+}
+
+export async function registService(port: number) {
+  const address = await getNodeAddress(port)
+  const client = new RedisClient()
+  await client.sadd(Service.ROBOT_NODE, address)
+  await client.publish(Service.ROBOT_CHANNEL, `add,${address}`)
+}
+
+export async function unRegistService(port: number) {
+  const address = await getNodeAddress(port)
+  const client = new RedisClient()
+  await client.srem(Service.ROBOT_NODE, address)
+  await client.publish(Service.ROBOT_CHANNEL, `remove,${address}`)
+}