【发布时间】：2020-09-22 07:19:10
【问题描述】：
我正在尝试在 mongoDB 中创建一个具有 3 个节点（主节点和 2 个辅助节点）的基本副本集。 它曾经对我有用，但突然我在 rs.status() 中看到主节点现在是辅助节点，而其他 2 个节点无法访问。我试图重新配置，启动但没有任何效果。我所做的只是删除 2 个节点并保留 1 个主节点，但是每当我尝试添加 2 个节点时，它都会给我一个错误，表明正在重新配置节点。
rs1:SECONDARY> rs.status()
{
"set" : "rs1",
"date" : ISODate("2020-09-22T07:11:47.370Z"),
"myState" : 2,
"term" : NumberLong(3),
"syncSourceHost" : "",
"syncSourceId" : -1,
"heartbeatIntervalMillis" : NumberLong(2000),
"majorityVoteCount" : 2,
"writeMajorityCount" : 2,
"votingMembersCount" : 3,
"writableVotingMembersCount" : 3,
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1600758614, 1),
"t" : NumberLong(3)
},
"lastCommittedWallTime" : ISODate("2020-09-22T07:10:14.325Z"),
"appliedOpTime" : {
"ts" : Timestamp(1600758624, 1),
"t" : NumberLong(3)
},
"durableOpTime" : {
"ts" : Timestamp(1600758624, 1),
"t" : NumberLong(3)
},
"lastAppliedWallTime" : ISODate("2020-09-22T07:10:24.326Z"),
"lastDurableWallTime" : ISODate("2020-09-22T07:10:24.326Z")
},
"lastStableRecoveryTimestamp" : Timestamp(1600758614, 1),
"members" : [
{
"_id" : 0,
"name" : "127.0.0.1:27011",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 3007,
"optime" : {
"ts" : Timestamp(1600758624, 1),
"t" : NumberLong(3)
},
"optimeDate" : ISODate("2020-09-22T07:10:24Z"),
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"configVersion" : 382587,
"configTerm" : -1,
"self" : true,
"lastHeartbeatMessage" : ""
},
{
"_id" : 1,
"name" : "127.0.0.1:27012",
"health" : 0,
"state" : 8,
"stateStr" : "(not reachable/healthy)",
"uptime" : 0,
"optime" : {
"ts" : Timestamp(0, 0),
"t" : NumberLong(-1)
},
"optimeDurable" : {
"ts" : Timestamp(0, 0),
"t" : NumberLong(-1)
},
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2020-09-22T07:11:42.692Z"),
"lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "Couldn't get a connection within the time limit of 500ms",
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"configVersion" : -1,
"configTerm" : -1
},
{
"_id" : 2,
"name" : "127.0.0.1:27013",
"health" : 0,
"state" : 8,
"stateStr" : "(not reachable/healthy)",
"uptime" : 0,
"optime" : {
"ts" : Timestamp(0, 0),
"t" : NumberLong(-1)
},
"optimeDurable" : {
"ts" : Timestamp(0, 0),
"t" : NumberLong(-1)
},
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2020-09-22T07:11:42.692Z"),
"lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "Couldn't get a connection within the time limit of 500ms",
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "",
"configVersion" : -1,
"configTerm" : -1
}
],
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1600758624, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1600758624, 1)
}
此外，当我尝试使用 3 节点成员然后 rs.initiate() 创建配置文件时，我收到错误消息“errmsg”：“已经初始化”。
【问题讨论】：
-
你启动服务了吗？所有服务都在您的本地主机上运行，您是否为每个实例使用专用的
dbPath？ -
我运行这些来启动服务：/usr/bin/mongod --config /home/mongodb/data1/db/mongod.cfg --port 27011 & /usr/bin/mongod --配置 /home/mongodb/data2/db/mongod.cfg --port 27012 & /usr/bin/mongod --config /home/mongodb/data3/db/mongod.cfg --port 27013 &
-
您的
mongod.cfg文件是什么样的？ -
``` echo "复制：replSetName: rs1" >> /home/mongodb/data1/db/mongod.cfg echo "复制：replSetName: rs1" >> /home/mongodb/data2/ db/mongod.cfg echo "复制：replSetName: rs1" >> /home/mongodb/data3/db/mongod.cfg ``
-
请用这些细节而不是评论更新问题。
标签： mongodb replication database-replication