首页 > 解决方案 > MongoError:在副本集中找不到主节点

问题描述

我有 2 个应用程序服务器,它们连接到一个副本集(Primary、Secondary 和 Arbitrer)。

我面临的问题是

 [ 'MongoError: no primary found in replicaset',
  '    at ../server/node_modules/mongodb-core/lib/topologies/replset.js:524:28',
  '    at null.<anonymous> (../server/node_modules/mongodb-core/lib/topologies/replset.js:303:24)',
  '    at g (events.js:260:16)',
  '    at emitOne (events.js:77:13)',
  '    at emit (events.js:169:7)',
  '    at null.<anonymous> (../server/node_modules/mongodb-core/lib/topologies/server.js:326:21)',
  '    at emitOne (events.js:77:13)',
  '    at emit (events.js:169:7)',
  '    at null.<anonymous> (../server/node_modules/mongodb-core/lib/connection/pool.js:270:12)',
  '    at g (events.js:260:16)',
  '    at emitTwo (events.js:87:13)',
  '    at emit (events.js:172:7)',
  '    at Socket.<anonymous> (../server/node_modules/mongodb-core/lib/connection/connection.js:175:49)',
  '    at Socket.g (events.js:260:16)',
  '    at emitOne (events.js:77:13)',
  '    at Socket.emit (events.js:169:7)',
  '    at connectErrorNT (net.js:996:8)',
  '    at nextTickCallbackWith2Args (node.js:442:9)',
  '    at process._tickCallback (node.js:356:17)' ]

应用程序上的 ReplicaSet 配置:

 "mongodb" : { 
      "replicaset": {
       "db"       : "test",
       "user"     : "admin",
       "password" : "*********",
       "name":"rs1",  
       "replicas": [{"host":"App1Box.dmz.mytest.com.au","port":27017}, {"host":"App2Box.dmz.mytest.com.au","port":27018}]  
      } 

rs.status() 输出

rs1:PRIMARY> rs.status()
{
        "set" : "rs1",
        "date" : ISODate("2018-05-17T03:50:01Z"),
        "myState" : 1,
        "members" : [
                {
                        "_id" : 2,
                        "name" : "App3Box:27018",
                        "health" : 1,
                        "state" : 7,
                        "stateStr" : "ARBITER",
                        "uptime" : 7180,
                        "lastHeartbeat" : ISODate("2018-05-17T03:50:00Z"),
                        "lastHeartbeatRecv" : ISODate("2018-05-17T03:50:00Z"),
                        "pingMs" : 0
                },
                {
                        "_id" : 3,
                        "name" : "App2Box:27018",
                        "health" : 1,
                        "state" : 1,
                        "stateStr" : "PRIMARY",
                        "uptime" : 7528,
                        "optime" : Timestamp(1526521846, 1),
                        "optimeDate" : ISODate("2018-05-17T01:50:46Z"),
                        "electionTime" : Timestamp(1526521798, 1),
                        "electionDate" : ISODate("2018-05-17T01:49:58Z"),
                        "self" : true
                },
                {
                        "_id" : 4,
                        "name" : "App1Box:27017",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 7139,
                        "optime" : Timestamp(1526521846, 1),
                        "optimeDate" : ISODate("2018-05-17T01:50:46Z"),
                        "lastHeartbeat" : ISODate("2018-05-17T03:50:01Z"),
                        "lastHeartbeatRecv" : ISODate("2018-05-17T03:50:01Z"),
                        "pingMs" : 0,
                        "syncingTo" : "App2Box:27018"
                }
        ],
        "ok" : 1
}

但是,我只能从连接到 MongoDB 的应用服务器之一看到这一点,比如 App1Box。我在 App2Box 上没有看到这个问题。

我尝试从replicaSets 中删除成员并重新添加,问题仍然存在。

Mongo 版本:2.6.8 节点版本:4.4.3 npm 版本:3.8.9

在主要和辅助上执行 rs.status() 时,我可以从 mongo 控制台查看replicaSet 中的所有成员。

谢谢你的帮助。

标签: mongodbmongodb-replica-set

解决方案


发现问题在于未使用完全限定的 DNS 名称,同时将成员添加到副本集。感谢@Neil Lunn。


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