MongoDB 3.2 升级至 3.4.6

MongoDB 升级测试步骤：
1、MongoDB版本升级顺序3.2->3.4->3.6->4.0 不能跨版本升级
2、升级到3.4后，您不能降级到3.2.7或更早版本。您只能降级到3.2.8或更高版本
3、先升级所有副本集中的Secondary
4、将Primary节点降级为Secondary节点
5、升级Primary
6、MongoDB3.2升级到3.4，登录后查看版本信息若还是3.2，执行db.adminCommand( { setFeatureCompatibilityVersion: "3.4" } )
7、MongoDB3.4升级到3.6，登录后查看版本信息若还是3.4，执行db.adminCommand( { setFeatureCompatibilityVersion: "3.6" } )
8、MongoDB3.6升级到4.0，登录后查看版本信息若还是3.6，执行db.adminCommand( { setFeatureCompatibilityVersion: "4.0" } )
###只在升级到4.0执行###
cfg = rs.conf();
cfg.protocolVersion=1;
rs.reconfig(cfg);

查看MongoDB进程：
[[email protected] bin]# ps -ef | grep mongo
root 17908 9428 0 20:43 pts/1 00:00:00 grep mongo
root 47265 1 0 Oct09 ? 00:09:38 /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/2777/conf/mongodb_2777.conf
root 179052 1 0 Oct09 ? 00:05:27 /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/5777/conf/mongodb_5777.conf
root 180521 1 2 Oct08 ? 00:59:01 /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/3777/conf/mongodb_3777.conf
root 185602 1 0 Oct08 ? 00:08:30 /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/4777/conf/mongodb_4777.conf

端口5777为Primary，2777，3777，4777为Secondary

登录副本集查看副本集信息：
[[email protected] bin]# /u02/mongodb/mongodb/bin/mongo --port 5777
MongoDB shell version: 3.2.6
connecting to: 127.0.0.1:5777/test
Server has startup warnings:
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
shard1:PRIMARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2019-10-10T12:42:36.196Z"),
"myState" : 1,
"term" : NumberLong(4),
"heartbeatIntervalMillis" : NumberLong(2000),
"members" : [
{
"_id" : 1,
"name" : "127.0.0.1:3777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 106410,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:42:34.326Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:42:35.321Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 21
},
{
"_id" : 2,
"name" : "127.0.0.1:4777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 106410,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:42:34.324Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:42:35.321Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 21
},
{
"_id" : 3,
"name" : "127.0.0.1:5777",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 106450,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"electionTime" : Timestamp(1570711316, 1),
"electionDate" : ISODate("2019-10-10T12:41:56Z"),
"configVersion" : 21,
"self" : true
},
{
"_id" : 4,
"name" : "127.0.0.1:2777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 100601,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:42:34.324Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:42:35.319Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 21
}
],
"ok" : 1
}

将mongodb-linux-x86_64-rhel62-3.4.6.tgz放在/opt下解压后改名
[[email protected] bin]# ls
bsondump mongo mongod mongodump mongoexport mongofiles mongoimport mongooplog mongoperf mongoreplay mongorestore mongos mongostat mongotop
[[email protected] bin]# pwd
/opt/mongodb_3_4/bin

删除副本：
shard1:PRIMARY> rs.remove("127.0.0.1:2777")

关闭2777端口mongo
[[email protected] bin]# /mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/2777/conf/mongodb_2777.conf --shutdown

通过mongodb3.4启动端口2777mongo，升级至3.4
/opt/mongodb_3_4/bin/mongod -f /u02/mongodb/mongodb/2777/conf/mongodb_2777.conf

登录mongo查看版本信息
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 2777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:2777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten]

将端口2777mongo添加到副本集
shard1:PRIMARY> rs.add("127.0.0.1:2777")

查看2777端口副本集信息
shard1:PRIMARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2019-10-10T12:49:24.623Z"),
"myState" : 1,
"term" : NumberLong(4),
"heartbeatIntervalMillis" : NumberLong(2000),
"members" : [
{
"_id" : 1,
"name" : "127.0.0.1:3777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 106819,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:49:24.438Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:49:23.376Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 21
},
{
"_id" : 2,
"name" : "127.0.0.1:4777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 106819,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:49:24.438Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:49:23.374Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 21
},
{
"_id" : 3,
"name" : "127.0.0.1:5777",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 106858,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"electionTime" : Timestamp(1570711316, 1),
"electionDate" : ISODate("2019-10-10T12:41:56Z"),
"configVersion" : 21,
"self" : true
},
{
"_id" : 4,
"name" : "127.0.0.1:2777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 101009,
"optime" : {
"ts" : Timestamp(1570711316, 2),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:41:56Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:49:24.405Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:49:23.375Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 21
}
],
"ok" : 1
}

登录mongo3.4版本2777端口查询数据测试
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 2777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:2777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten]
shard1:SECONDARY> rs.slaveOk()
shard1:SECONDARY> show dbs
local 0.001GB
test 0.000GB
yoon 0.000GB
shard1:SECONDARY> use yoon
switched to db yoon
shard1:SECONDARY> show collections
movie
shard1:SECONDARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }

通过mongodb3.4启动端口3777mongo，升级至3.4
[[email protected] bin]# /u02/mongodb/mongodb/bin/mongo --port 5777
MongoDB shell version: 3.2.6
connecting to: 127.0.0.1:5777/test
Server has startup warnings:
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
shard1:PRIMARY> rs.remove("127.0.0.1:3777")
{ "ok" : 1 }
shard1:PRIMARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2019-10-10T12:52:37.517Z"),
"myState" : 1,
"term" : NumberLong(4),
"heartbeatIntervalMillis" : NumberLong(2000),
"members" : [
{
"_id" : 2,
"name" : "127.0.0.1:4777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 107011,
"optime" : {
"ts" : Timestamp(1570711953, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:52:33Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:52:37.379Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:52:37.379Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 22
},
{
"_id" : 3,
"name" : "127.0.0.1:5777",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 107051,
"optime" : {
"ts" : Timestamp(1570711953, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:52:33Z"),
"electionTime" : Timestamp(1570711316, 1),
"electionDate" : ISODate("2019-10-10T12:41:56Z"),
"configVersion" : 22,
"self" : true
},
{
"_id" : 4,
"name" : "127.0.0.1:2777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 101202,
"optime" : {
"ts" : Timestamp(1570711953, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:52:33Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:52:37.379Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:52:37.379Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 22
}
],
"ok" : 1
}

[[email protected] bin]# /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/3777/conf/mongodb_3777.conf --shutdown
killing process with pid: 180521

[[email protected] bin]# /opt/mongodb_3_4/bin/mongod -f /u02/mongodb/mongodb/3777/conf/mongodb_3777.conf
about to fork child process, waiting until server is ready for connections.
forked process: 25117
child process started successfully, parent exiting

[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 3777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:3777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
shard1:OTHER>

3777端口升级至3.4.6版本，将3777端口加入副本集
[[email protected] bin]# /u02/mongodb/mongodb/bin/mongo --port 5777
MongoDB shell version: 3.2.6
connecting to: 127.0.0.1:5777/test
Server has startup warnings:
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
shard1:PRIMARY> rs.add("127.0.0.1:3777")
{ "ok" : 1 }
shard1:PRIMARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2019-10-10T12:55:20.927Z"),
"myState" : 1,
"term" : NumberLong(4),
"heartbeatIntervalMillis" : NumberLong(2000),
"members" : [
{
"_id" : 2,
"name" : "127.0.0.1:4777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 107175,
"optime" : {
"ts" : Timestamp(1570712117, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:55:17Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:55:19.964Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:55:19.964Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 23
},
{
"_id" : 3,
"name" : "127.0.0.1:5777",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 107214,
"optime" : {
"ts" : Timestamp(1570712117, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:55:17Z"),
"electionTime" : Timestamp(1570711316, 1),
"electionDate" : ISODate("2019-10-10T12:41:56Z"),
"configVersion" : 23,
"self" : true
},
{
"_id" : 4,
"name" : "127.0.0.1:2777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 101365,
"optime" : {
"ts" : Timestamp(1570712117, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:55:17Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:55:19.964Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:55:19.965Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 23
},
{
"_id" : 5,
"name" : "127.0.0.1:3777",
"health" : 1,
"state" : 5,
"stateStr" : "STARTUP2",
"uptime" : 0,
"optime" : {
"ts" : Timestamp(1570711953, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T12:52:33Z"),
"lastHeartbeat" : ISODate("2019-10-10T12:55:19.964Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T12:55:17.966Z"),
"pingMs" : NumberLong(0),
"configVersion" : 23
}
],
"ok" : 1
}

在Primary插入一条新数据在3777端口查询测试

查看DB
shard1:PRIMARY> show dbs
local 0.001GB
test 0.000GB
yoon 0.000GB

连接DB
shard1:PRIMARY> use yoon
switched to db yoon

查看DB下表
shard1:PRIMARY> show collections;
movie

查询数据
shard1:PRIMARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }

当前连接DB
shard1:PRIMARY> db
yoon

插入一条新数据
shard1:PRIMARY> db.movie.insert({"kname":"shouqi"})
WriteResult({ "nInserted" : 1 })

查询数据
shard1:PRIMARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }

登录2777和3777端口分别查看{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 2777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:2777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T16:41:23.659+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T16:41:23.660+0800 I CONTROL [initandlisten]
shard1:SECONDARY> rs.slaveOk()
shard1:SECONDARY> use yoon
switched to db yoon
shard1:SECONDARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }
shard1:SECONDARY>

[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 3777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:3777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
shard1:SECONDARY> rs.slaveOk()
shard1:SECONDARY> use yoon
switched to db yoon
shard1:SECONDARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }

以此类推升级端口4777，至3.4.6
shard1:PRIMARY> rs.remove("127.0.0.1:4777")
{ "ok" : 1 }

[[email protected] bin]# /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/4777/conf/mongodb_4777.conf --shutdown
killing process with pid: 185602

[[email protected] bin]# /opt/mongodb_3_4/bin/mongod -f /u02/mongodb/mongodb/4777/conf/mongodb_4777.conf
about to fork child process, waiting until server is ready for connections.
forked process: 34453
child process started successfully, parent exiting

[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 4777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:4777/
MongoDB server version: 3.4.6

将4777端口添加到副本集
[[email protected] bin]# /u02/mongodb/mongodb/bin/mongo --port 5777
MongoDB shell version: 3.2.6
connecting to: 127.0.0.1:5777/test
Server has startup warnings:
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-09T15:08:26.464+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-09T15:08:26.465+0800 I CONTROL [initandlisten]
shard1:PRIMARY> rs.add("127.0.0.1:4777")
{ "ok" : 1 }
shard1:PRIMARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2019-10-10T13:07:58.679Z"),
"myState" : 1,
"term" : NumberLong(4),
"heartbeatIntervalMillis" : NumberLong(2000),
"members" : [
{
"_id" : 3,
"name" : "127.0.0.1:5777",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 107972,
"optime" : {
"ts" : Timestamp(1570712875, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T13:07:55Z"),
"electionTime" : Timestamp(1570711316, 1),
"electionDate" : ISODate("2019-10-10T12:41:56Z"),
"configVersion" : 25,
"self" : true
},
{
"_id" : 4,
"name" : "127.0.0.1:2777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 102123,
"optime" : {
"ts" : Timestamp(1570712875, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T13:07:55Z"),
"lastHeartbeat" : ISODate("2019-10-10T13:07:57.987Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T13:07:55.990Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 25
},
{
"_id" : 5,
"name" : "127.0.0.1:3777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 758,
"optime" : {
"ts" : Timestamp(1570712875, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T13:07:55Z"),
"lastHeartbeat" : ISODate("2019-10-10T13:07:57.987Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T13:07:55.990Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "127.0.0.1:5777",
"configVersion" : 25
},
{
"_id" : 6,
"name" : "127.0.0.1:4777",
"health" : 1,
"state" : 5,
"stateStr" : "STARTUP2",
"uptime" : 0,
"optime" : {
"ts" : Timestamp(1570712743, 1),
"t" : NumberLong(4)
},
"optimeDate" : ISODate("2019-10-10T13:05:43Z"),
"lastHeartbeat" : ISODate("2019-10-10T13:07:57.987Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T13:07:55.990Z"),
"pingMs" : NumberLong(0),
"configVersion" : 25
}
],
"ok" : 1
}

将Primary升级至3.4.6

将Primary节点降级为Secondary节点，有两种方式，一种是rs.stepDown() ， 另一种是通过修改优先级来修改Primary
shard1:PRIMARY> rs.stepDown()
或
通过优先级来修改PRIMARY
shard1:PRIMARY> config=rs.conf() //查看当前配置，存入config变量中

shard1:PRIMARY> config.members[0].priority = 50 //修改config变量，第1组成员的优先级为50

shard1:PRIMARY> rs.reconfig(config) //配置生效

shard1:PRIMARY> rs.config() //查看当前配置
{
"_id" : "shard1",
"version" : 18,
"protocolVersion" : NumberLong(1),
"members" : [
{
"_id" : 1,
"host" : "127.0.0.1:3777",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 50,
"tags" : {

},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "127.0.0.1:4777",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {

},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 3,
"host" : "127.0.0.1:5777",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {

},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 4,
"host" : "127.0.0.1:2777",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {

},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"getLastErrorModes" : {

},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("5d9c7a7e76695600e03e231f")
}
}

登录3777端口变为Primary
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 3777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:3777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
shard1:PRIMARY>

升级5777端口
shard1:PRIMARY> rs.remove("127.0.0.1:5777")
{ "ok" : 1 }

[[email protected] bin]# /u02/mongodb/mongodb/bin/mongod -f /u02/mongodb/mongodb/5777/conf/mongodb_5777.conf --shutdown
killing process with pid: 179052

[[email protected] bin]# /opt/mongodb_3_4/bin/mongod -f /u02/mongodb/mongodb/5777/conf/mongodb_5777.conf
about to fork child process, waiting until server is ready for connections.
forked process: 40446
child process started successfully, parent exiting

[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 5777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:5777/
MongoDB server version: 3.4.6

将5777端口添加至副本集
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 3777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:3777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-10T20:53:40.536+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-10T20:53:40.537+0800 I CONTROL [initandlisten]
shard1:PRIMARY> rs.add("127.0.0.1:5777")
{ "ok" : 1 }

shard1:PRIMARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2019-10-10T13:16:30.878Z"),
"myState" : 1,
"term" : NumberLong(5),
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"appliedOpTime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"durableOpTime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
}
},
"members" : [
{
"_id" : 4,
"name" : "127.0.0.1:2777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 1272,
"optime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDurable" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDate" : ISODate("2019-10-10T13:16:16Z"),
"optimeDurableDate" : ISODate("2019-10-10T13:16:16Z"),
"lastHeartbeat" : ISODate("2019-10-10T13:16:28.911Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T13:16:26.912Z"),
"pingMs" : NumberLong(0),
"configVersion" : 28
},
{
"_id" : 5,
"name" : "127.0.0.1:3777",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 1370,
"optime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDate" : ISODate("2019-10-10T13:16:16Z"),
"electionTime" : Timestamp(1570713059, 1),
"electionDate" : ISODate("2019-10-10T13:10:59Z"),
"configVersion" : 28,
"self" : true
},
{
"_id" : 6,
"name" : "127.0.0.1:4777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 514,
"optime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDurable" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDate" : ISODate("2019-10-10T13:16:16Z"),
"optimeDurableDate" : ISODate("2019-10-10T13:16:16Z"),
"lastHeartbeat" : ISODate("2019-10-10T13:16:28.911Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T13:16:26.912Z"),
"pingMs" : NumberLong(0),
"configVersion" : 28
},
{
"_id" : 7,
"name" : "127.0.0.1:5777",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 11,
"optime" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDurable" : {
"ts" : Timestamp(1570713376, 1),
"t" : NumberLong(5)
},
"optimeDate" : ISODate("2019-10-10T13:16:16Z"),
"optimeDurableDate" : ISODate("2019-10-10T13:16:16Z"),
"lastHeartbeat" : ISODate("2019-10-10T13:16:28.911Z"),
"lastHeartbeatRecv" : ISODate("2019-10-10T13:16:27.075Z"),
"pingMs" : NumberLong(0),
"configVersion" : 28
}
],
"ok" : 1
}

在Primary插入数据，在所有端口Secondary测试数据是否正常
shard1:PRIMARY> db.movie.insert({"shouyue":"yunweibu"})
WriteResult({ "nInserted" : 1 })

shard1:PRIMARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }
{ "_id" : ObjectId("5d9f2fa0b384f3ba8df3a0ce"), "shouyue" : "yunweibu" } #查看各端口是否有此条数据

2777端口：
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 2777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:2777/
MongoDB server version: 3.4.6
shard1:SECONDARY> show dbs
2019-10-10T21:19:51.176+0800 E QUERY [thread1] Error: listDatabases failed:{
"ok" : 0,
"errmsg" : "not master and slaveOk=false",
"code" : 13435,
"codeName" : "NotMasterNoSlaveOk"
} :
[email protected]/mongo/shell/utils.js:25:13
[email protected]/mongo/shell/mongo.js:62:1
[email protected]/mongo/shell/utils.js:769:19
[email protected]/mongo/shell/utils.js:659:15
@(shellhelp2):1:1
shard1:SECONDARY> rs.slaveOk()
shard1:SECONDARY> use yoon
switched to db yoon
shard1:SECONDARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }
{ "_id" : ObjectId("5d9f2fa0b384f3ba8df3a0ce"), "shouyue" : "yunweibu" }

4777端口：
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 4777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:4777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten]
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten]
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten]
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-10T21:07:05.390+0800 I CONTROL [initandlisten]
shard1:SECONDARY> rs.slaveOk()
shard1:SECONDARY> use yoon
switched to db yoon
shard1:SECONDARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }
{ "_id" : ObjectId("5d9f2fa0b384f3ba8df3a0ce"), "shouyue" : "yunweibu" }

5777端口：
[[email protected] bin]# /opt/mongodb_3_4/bin/mongo --port 5777
MongoDB shell version v3.4.6
connecting to: mongodb://127.0.0.1:5777/
MongoDB server version: 3.4.6
Server has startup warnings:
2019-10-10T21:15:35.059+0800 I CONTROL [initandlisten]
2019-10-10T21:15:35.059+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2019-10-10T21:15:35.059+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2019-10-10T21:15:35.059+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2019-10-10T21:15:35.059+0800 I CONTROL [initandlisten]
2019-10-10T21:15:35.060+0800 I CONTROL [initandlisten]
2019-10-10T21:15:35.060+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine.
2019-10-10T21:15:35.060+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems:
2019-10-10T21:15:35.060+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options]
2019-10-10T21:15:35.060+0800 I CONTROL [initandlisten]
shard1:SECONDARY> rs.slaveOk()
shard1:SECONDARY> use yoon
switched to db yoon
shard1:SECONDARY> db.movie.find()
{ "_id" : ObjectId("5d9c7ee9d7a8df8fd023d6ed"), "name" : "hank" }
{ "_id" : ObjectId("5d9d9d5d159fa59c5d01985a"), "hname" : "yoon" }
{ "_id" : ObjectId("5d9d9e33159fa59c5d01985b"), "yname" : "hankyoon" }
{ "_id" : ObjectId("5d9f2aacdaabe0e11aebef86"), "kname" : "shouqi" }
{ "_id" : ObjectId("5d9f2fa0b384f3ba8df3a0ce"), "shouyue" : "yunweibu" }

MongoDB3.2升级至3.4.6升级完成。

但是真正的升级线上需要开发，测试配合来完成，保证升级的可用性。

原文地址：https://www.cnblogs.com/hankyoon/p/11650830.html

时间： 2024-11-02 01:30:27

MongoDB 3.2 升级至 3.4.6的相关文章

通过Yum更新MongoDB 2.6 to 3.0

通过Yum更新MongoDB 2.6 to 3.0 由于之前使用的是yum安装的MongoDB 2.6(根据官网提示,如果你准备从2.4升级起来,需要先行升级至2.6版本,再进行3.0的升级),为了使用MongoDB多个新特性,如WiredTiger引擎,中文检索等,而根据MongoDB版本划分可知,双数为稳定版本,所以决定升级至最新的MongoDb 3.2(笔者写这篇文时MongoDB 3.3为最新版本). 其实根据官网所给文档就能正常升级了,本文也是参考官网文档做升级,如果你准备参考本文进行

Centos 安装MongoDB C++ dirver

Centos 安装MongoDB C++ dirver 前言: 图片居然显示不了, 后面在添加图片了 官网地址:https://www.mongodb.org/ 驱动下载地址: https://docs.mongodb.org/ecosystem/drivers/?_ga=1.81586452.2024551820.1440643898 下载release版本 官网安装教程地址:https://docs.mongodb.org/ecosystem/drivers/cpp/ 安装环境 CentOS

一条命令搞垮MongoDB实例

一条命令搞垮MongoDB实例 背景 Part1:写在最前 在副本集架构中,我们会经常通过rs.add(),rs.remove()命令来调整后台数据库架构,在本案例中,我们异常的触发到了一个MongoDB的BUG,并尽快的找到了官方的人进行咨询.在生产环境中,我们做实例迁移,将研发自行维护的MongoDB副本集迁移至DBA管理,由于硬件和版本都不符合规范,因此我们对集群先进行了升级处理,又使用了rs.add()和rs.remove()来完成数据库的迁移工作. Part2:背景 在研发自行维护的数

云数据库 MongoDB版

阿里云云数据库MongoDB版是一种安全可靠.可弹性伸缩的云数据库服务,目前支持ReplicaSet和Sharding两种部署架构,通过简单的几步操作即可快速部署.阿里云云数据库MongoDB版是一种高度可用的托管服务,具有自动监控.备份及容灾功能,可将您从耗时的数据库管理任务中解放出来,让您有更多时间专注于您的应用和业务. 优点: 高可靠存储引擎飞天分布式系统.三节点副本集架构,多重备份数据无忧 数据强扩展性支持集群架构,无限弹性扩展,数据存储永无止境 数据闭环流通云上云下同构数据互通,异构数

ubuntu安装mongodb

参考:http://blog.csdn.net/zhushh/article/details/52451441 1.导入软件源的公钥 sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927 2.为mongodb创建软件源list文件 ubuntu12.04 echo "deb http://repo.mongodb.org/apt/ubuntu precise/mongodb-org/3.2 multi

mongodb 安装、windows服务、创建用户

http://www.cnblogs.com/best/p/6212807.html 打开MongoDB的安装目录如“C:\Program Files\MongoDB\Server\3.4\bin”,并在此目录下新建一个mongo.config文件,文件内容如下: ##数据库目录## dbpath=C:\data\db ##日志输出文件## logpath=C:\data\log\db.log 使用cmd进入命令行 使用cd切换目录到安装目录下,如:cd  C:\Program Files\Mo

MongoDB 学习笔记之 WriteConcern

WriteConcern: 转载:MongoDB WriteConcern(写关注)机制 http://www.ywnds.com/?p=3688&viewuser=40 MongoDB部署模式 MongoDB的部署模式有三种:第一种是单机模式(开发测试):第二种是高可用复制集:第三种是可扩展分片集群.如下图所示. 知道了MongoDB几种常用的部署模式之后,接下来我们看看每种部署模式的写操作过程. MongoDB单点写操作 从上图可以看出,其中primary是MongoDB的一个实例,里面有两

MongoDB副本集

简介 mongodb复制(replication)是将数据同步在多个服务器的过程.主节点记录在其上的所有操作oplog,从节点定期轮询主节点获取这些操作,然后对自己的数据副本执行这些操作,从而保证从节点的数据与主节点一致.复制提供了数据的冗余备份,并在多个服务器上存储数据副本,提高了数据的可用性,并保证数据的安全性.复制还允许您从硬件故障和服务中断中恢复数据. 而副本集(replica set)是从mongodb 1.6 提供的新功能,比复制功能要强大一些并增加了故障自动切换和自动修复成员节点,

mongodb 学习

该命令如果数据库不存在,将创建一个新的数据库, 否则将返回现有的数据库.如果想创建一个数据库名称为 <mydb>, 那么 use DATABASE 语句应该如下: >use mydb switched to db mydb=============================================================================要检查当前选择的数据库使用命令 db >db mydb============================