我刚刚将 mongoose 和 MongoDB 升级到最新版本并转换了mongod实例到副本集（用于测试的单个节点），但现在当节点应用程序连接到它时，我得到MongooseServerSelectionError: connect ECONNREFUSED ::1:27017错误，但我不明白为什么type: 'ReplicaSetNoPrimary',当我通过 shell 连接到它时，提示符是rs0:PRIMARY>. Serching for this error I always see 消息：'连接ECONNREFUSED 127.0.0.1:27017'，but looks like mongoose is trying to connect to::1:27017`。
你能看出我做错了什么或缺少设置吗？
更新：
我重新启动了机器，首先节点应用程序连接正常。然后，如果重新启动它，它开始无法连接。
rs
[nodemon] starting `node server.js`
App executing to port 3000
MongooseServerSelectionError: connect ECONNREFUSED ::1:27017
Error :
App executing to port 3000
MongooseServerSelectionError: connect ECONNREFUSED ::1:27017
at NativeConnection.Connection.openUri (/Volumes/ProjectsSSD/FixitServer/fixit_server_node/node_modules/mongoose/lib/connection.js:797:32)
at /Volumes/ProjectsSSD/FixitServer/fixit_server_node/node_modules/mongoose/lib/index.js:332:10
at /Volumes/ProjectsSSD/FixitServer/fixit_server_node/node_modules/mongoose/lib/helpers/promiseOrCallback.js:32:5
at new Promise (<anonymous>)
at promiseOrCallback (/Volumes/ProjectsSSD/FixitServer/fixit_server_node/node_modules/mongoose/lib/helpers/promiseOrCallback.js:31:10)
at Mongoose._promiseOrCallback (/Volumes/ProjectsSSD/FixitServer/fixit_server_node/node_modules/mongoose/lib/index.js:1158:10)
at Mongoose.connect (/Volumes/ProjectsSSD/FixitServer/fixit_server_node/node_modules/mongoose/lib/index.js:331:20)
at Object.<anonymous> (/Volumes/ProjectsSSD/FixitServer/fixit_server_node/api/src/config/database.js:33:10)
at Module._compile (node:internal/modules/cjs/loader:1097:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1149:10) {
reason: TopologyDescription {
type: 'ReplicaSetNoPrimary',
servers: Map(1) { 'localhost:27017' => [ServerDescription] },
stale: false,
compatible: true,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
setName: 'rs0',
maxSetVersion: 1,
maxElectionId: new ObjectId("7fffffff0000000000000004"),
commonWireVersion: 13,
logicalSessionTimeoutMinutes: undefined
}
}
MongoDB 通过 home-brew 作为服务安装，因此它随机器启动。由于我需要使用事务，因此我通过编辑将我的实例转换为副本集mongod.conf添加复制
systemLog:
destination: file
path: /usr/local/var/log/mongodb/mongo.log
logAppend: true
storage:
dbPath: /usr/local/var/mongodb
net:
bindIp: 127.0.0.1
replication:
oplogSizeMB: 128
replSetName: "rs0"
enableMajorityReadConcern: true
并连接到它显示rs0:PRIMARY> shell 中提示：
rs0:PRIMARY> rs.status()
{
"set" : "rs0",
"date" : ISODate("2021-12-12T08:33:55.844Z"),
"myState" : 1,
"term" : NumberLong(4),
"syncSourceHost" : "",
"syncSourceId" : -1,
"heartbeatIntervalMillis" : NumberLong(2000),
"majorityVoteCount" : 1,
"writeMajorityCount" : 1,
"votingMembersCount" : 1,
"writableVotingMembersCount" : 1,
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1639298030, 1),
"t" : NumberLong(4)
},
"lastCommittedWallTime" : ISODate("2021-12-12T08:33:50.600Z"),
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1639298030, 1),
"t" : NumberLong(4)
},
"appliedOpTime" : {
"ts" : Timestamp(1639298030, 1),
"t" : NumberLong(4)
},
"durableOpTime" : {
"ts" : Timestamp(1639298030, 1),
"t" : NumberLong(4)
},
"lastAppliedWallTime" : ISODate("2021-12-12T08:33:50.600Z"),
"lastDurableWallTime" : ISODate("2021-12-12T08:33:50.600Z")
},
"lastStableRecoveryTimestamp" : Timestamp(1639297999, 2),
"electionCandidateMetrics" : {
"lastElectionReason" : "electionTimeout",
"lastElectionDate" : ISODate("2021-12-12T07:28:18.023Z"),
"electionTerm" : NumberLong(4),
"lastCommittedOpTimeAtElection" : {
"ts" : Timestamp(0, 0),
"t" : NumberLong(-1)
},
"lastSeenOpTimeAtElection" : {
"ts" : Timestamp(1639293898, 1),
"t" : NumberLong(3)
},
"numVotesNeeded" : 1,
"priorityAtElection" : 1,
"electionTimeoutMillis" : NumberLong(10000),
"newTermStartDate" : ISODate("2021-12-12T07:28:18.032Z"),
"wMajorityWriteAvailabilityDate" : ISODate("2021-12-12T07:28:18.037Z")
},
"members" : [
{
"_id" : 0,
"name" : "localhost:27017",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 3943,
"optime" : {
"ts" : Timestamp(1639298030, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2021-12-12T08:33:50Z"),
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"electionTime" : Timestamp(1639294098, 1),
"electionDate" : ISODate("2021-12-12T07:28:18Z"),
"configVersion" : 1,
"configTerm" : 4,
"self" : true,
"lastHeartbeatMessage" : ""
}
],
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1639298030, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1639298030, 1)
}
然后我将连接 uri 和选项修改为：
const {
MONGO_USERNAME,
MONGO_PASSWORD,
MONGO_HOSTNAME,
MONGO_PORT,
MONGO_DB,
REPLICA_SET
} = process.env;
const options = {
// useNewUrlParser: true,
// useUnifiedTopology: true,
// useCreateIndex:true,
// useFindAndModify: false,
// reconnectTries: Number.MAX_VALUE,
// reconnectInterval: 500,
connectTimeoutMS: 10000,
};
const url = `mongodb://${MONGO_USERNAME}:${MONGO_PASSWORD}@${MONGO_HOSTNAME}:${MONGO_PORT}/${MONGO_DB}?replicaSet=${REPLICA_SET}`;
mongoose.connect(url, options)
.then(con => {
console.log('MongoDB is successfully connected. \n\n ');//, con.connections);
})
.catch(function (err) {
console.log(err);
});
环境值：
PORT=3000
MONGO_USERNAME=someName
MONGO_PASSWORD=somePassword
MONGO_HOSTNAME=127.0.0.1
MONGO_PORT=27017
MONGO_DB=fixit
REPLICA_SET=rs0
