问题描述
我正在努力连接到我的 MongoDB 副本集，但似乎没有任何效果。
我已经部署了具有 3 个节点的副本集，每个节点都位于单独的 AWS 可用区但位于同一区域。
下面是我用来连接副本集的代码。
mongoURL := "mongodb://myuser:password@<publicIP>:27017,<publicIP>:27017,<publicIP>:27017/?replicaset=replica01&authSource=admin"
clientOptions := options.Client().ApplyURI(mongoURL)
clientOptions = clientOptions.SetMaxPoolSize(100) //100 is default driver setting
log.Println("Connection String: " + clientOptions.GetURI())
client,err := mongo.Connect(ctx,clientOptions)
我还创建了 DNS 映射并使用了它，但这也不起作用。
以下是连接网址mongodb://adminuser:password@rs1.domain.com:27017,rs2.domain.com:27017,rs3.domain.com:27017/?replicaset=replica01&authSource=admin
Robo3T
当我尝试使用公共 IP 将副本集与 Robo3T 连接时，出现以下错误
无法连接到副本集“IP-RS”[public-ip:27017]。套 主节点无法访问。
原因：集合中没有成员可访问。原因：连接失败
当我使用子域名连接副本集时，出现以下错误
无法连接到副本集“SRV 副本”[rs1.domain.com:27017]。 Set 的主节点无法访问。
原因：初始化 MongoWorker 失败。原因：连接失败
解决方法
这是解决方案。
问题在于主机名。我在配置副本集时使用了主机名。
这是我的配置
$ config = {
_id : "mongo-cluster",members : [
{_id : 0,host : "mongo-1:27017"},{_id : 1,host : "mongo-2:27017"},{_id : 2,host : "mongo-3:27017"},]
}
$ rs.initiate(config)
解决方案
我用 hostname 更改了 private-ip。
请注意，由于我的 3 个副本节点位于同一 AWS 区域但位于不同的可用区，因此我使用 private ip 在节点之间建立连接。
$ config = {
_id : "replica01",host : "private-ip:27017"},]
}
rs0:PRIMARY> rs.reconfig(config)
所有 3 个节点上的 MongoDB conf 设置
File: /etc/mongod.conf
net:
port: 27017
bindIp: 127.0.0.1,172.16.1.x (private-ip)
security:
keyFile: /opt/mongo/mongo-keyfile
replication:
replSetName: replica01
所有 3 个节点上的 Hostentry
File: /etc/hosts
172.16.1.x mongo-1
172.16.1.x mongo-2
172.16.1.x mongo-3
您每台机器的名称应与 /etc/hosts 文件中定义的名称相匹配
$ sudo nano /etc/hostname
mongo-1
副本状态
> rs.status()
{
"set" : "replica01","date" : ISODate("2021-03-13T12:42:45.971Z"),"myState" : 2,"term" : NumberLong(8),"syncSourceHost" : "172.16.1.x:27017","syncSourceId" : 2,"heartbeatIntervalMillis" : NumberLong(2000),"majorityVoteCount" : 2,"writeMajorityCount" : 2,"votingMembersCount" : 3,"writableVotingMembersCount" : 3,"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1615639361,1),"t" : NumberLong(8)
},"lastCommittedWallTime" : ISODate("2021-03-13T12:42:41.356Z"),"readConcernMajorityOpTime" : {
"ts" : Timestamp(1615639361,"readConcernMajorityWallTime" : ISODate("2021-03-13T12:42:41.356Z"),"appliedOpTime" : {
"ts" : Timestamp(1615639361,"durableOpTime" : {
"ts" : Timestamp(1615639361,"lastAppliedWallTime" : ISODate("2021-03-13T12:42:41.356Z"),"lastDurableWallTime" : ISODate("2021-03-13T12:42:41.356Z")
},"lastStableRecoveryTimestamp" : Timestamp(1615639331,"members" : [
{
"_id" : 1,"name" : "172.16.1.x:27017","health" : 1,"state" : 2,"stateStr" : "SECONDARY","uptime" : 159132,"optime" : {
"ts" : Timestamp(1615639361,"t" : NumberLong(8)
},"optimeDate" : ISODate("2021-03-13T12:42:41Z"),"infoMessage" : "","configVersion" : 2,"configTerm" : 8,"self" : true,"lastHeartbeatMessage" : ""
},{
"_id" : 2,"state" : 1,"stateStr" : "PRIMARY","uptime" : 62213,"optimeDurable" : {
"ts" : Timestamp(1615639361,"optimeDurableDate" : ISODate("2021-03-13T12:42:41Z"),"lastHeartbeat" : ISODate("2021-03-13T12:42:45.616Z"),"lastHeartbeatRecv" : ISODate("2021-03-13T12:42:44.778Z"),"pingMs" : NumberLong(1),"lastHeartbeatMessage" : "","syncSourceHost" : "","syncSourceId" : -1,"electionTime" : Timestamp(1615477956,"electionDate" : ISODate("2021-03-11T15:52:36Z"),"configTerm" : 8
},{
"_id" : 3,"lastHeartbeat" : ISODate("2021-03-13T12:42:45.095Z"),"lastHeartbeatRecv" : ISODate("2021-03-13T12:42:45.321Z"),"pingMs" : NumberLong(0),"configTerm" : 8
}
],"ok" : 1,"$clusterTime" : {
"clusterTime" : Timestamp(1615639361,"signature" : {
"hash" : BinData(0,"2ujactkx3HytFTyWhh+JkzyQy+8="),"keyId" : NumberLong("6936222258616598531")
}
},"operationTime" : Timestamp(1615639361,1)
}
转到连接字符串
mongoURL := "mongodb://username:pass@$172.16.1.x:27017,172.16.1.x:27017,172.16.1.x:27017/mydb?replicaSet=replica01&authSource=admin"