MongoDB4.4版本源码部署分片集群
MongoDB4.4版本源码部署分片集群
| node1:39.103.204.27 |
node2:49.232.197.39 |
node3:43.138.41.190 |
| shard1 PRIMARY |
shard1 SECONDARY |
shard1 arbiterOnly / hidden |
| shard2 PRIMARY |
shard2 SECONDARY |
shard2 arbiterOnly / hidden |
| shard3 PRIMARY |
shard3 SECONDARY |
shard3 arbiterOnly / hidden |
| config1 PRIMARY |
config2 SECONDARY |
config3 arbiterOnly / hidden |
| mongos1 |
mongos2 |
mongos3 |
端口分配
| mongos |
config |
shard1 |
shard2 |
shard3 |
| 20000 |
21000 |
27001 |
27002 |
27003 |
一、单节点部署及环境准备
1、1 单节点部署及目录规划
/data/mongodb/config/{data,log} # config节点的数据和日志
/data/mongodb/mongos/log # mongos节点的日志
/data/mongodb/shard1/{data,log} # shard节点的数据和日志
/data/logs/mongodb # config节点的日志
/data/apps/mongodb/config # 节点配置文件路径
/data/apps/mongodb/pid # 节点pid文件路径
root@bugaoxing:/data/apps# tar xf mongodb-linux-x86_64-ubuntu2004-4.4.10.tgz
root@bugaoxing:/data/apps# tar xf mongodb-database-tools-ubuntu2004-x86_64-100.5.1.tgz
root@bugaoxing:/data/apps# mv mongodb-linux-x86_64-ubuntu2004-4.4.10 mongodb
root@bugaoxing:/data/apps# mv mongodb-database-tools-ubuntu2004-x86_64-100.5.1.tgz mongodb-database
echo "export MONGODB_HOME=/data/apps/mongodb" >> /etc/profile
echo "export PATH=$PATH:$MONGODB_HOME/bin" >> /etc/profile
echo "export MONGODB_DATABASE_HOME=/data/apps/mongodb-database" >> /etc/profile
echo "export PATH=$PATH:$MONGODB_DATABASE_HOME/bin" >> /etc/profile
root@bugaoxing:/data/apps# source /etc/profile
# 创建相关目录
mkdir -p /data/mongodb/config/{data,log}
mkdir -p /data/mongodb/mongos/log
mkdir -p /data/mongodb/shard1/{data,log}
mkdir -p /data/mongodb/shard2/{data,log}
mkdir -p /data/mongodb/shard3/{data,log}
mkdir -p /data/logs/mongodb
mkdir -p /data/apps/mongodb/{config,pid}
1、2 配置config节点
配置config.conf
注意各节点的bindip
systemLog:
destination: file
logAppend: true
path: /data/logs/mongodb/config.log
storage:
#dbPath: /data/mongodb
dbPath: /data/mongodb/config/data
journal:
enabled: true
processManagement:
fork: true # fork and run in background
pidFilePath: /data/apps/mongodb/pid/config.pid # location of pidfile
net:
port: 21000
#bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
bindIp: 0.0.0.0 # Listen to local interface only, comment to listen on all interfaces.
sharding:
clusterRole: configsvr
replication:
oplogSizeMB: 100
replSetName: configs
启动三台config server节点
root@VM-24-2-ubuntu:/data/apps/mongodb/config# mongod -f /data/apps/mongodb/config/config.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2154
child process started successfully, parent exiting
## 登录任意一台config server服务器，初始化副本集
root@VM-24-2-ubuntu:/data/apps/mongodb/config# mongo 127.0.0.1:21000
# 进入mongodb后输入一下内容 记得更改各节点ip，防火墙
config = {_id: 'configs', members: [
{_id: 0, host: '39.103.204.27:21000'},
{_id: 1, host: '49.232.197.39:21000'},
{_id: 2, host: '43.138.41.190:21000'}]
}
# 初始化配置
rs.initiate(config)
# 出现 ok 1 则成功
> config = {_id: 'configs', members: [
... {_id: 0, host: '39.103.204.27:21000'},
... {_id: 1, host: '49.232.197.39:21000'},
... {_id: 2, host: '43.138.41.190:21000'}]
... }
{
"_id" : "configs",
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:21000"
},
{
"_id" : 1,
"host" : "49.232.197.39:21000"
},
{
"_id" : 2,
"host" : "43.138.41.190:21000"
}
]
}
>
>
> rs.initiate(config)
{
"ok" : 1,
"$gleStats" : {
"lastOpTime" : Timestamp(1665399949, 1),
"electionId" : ObjectId("000000000000000000000000")
},
"lastCommittedOpTime" : Timestamp(0, 0)
}
configs:SECONDARY>
阿里云MongoDB副本集中将hidden节点用来在Secondary节点故障时接替该故障节点成为新的Secondary节点
hidden与arbiterOnly的区别在于 两种节点都会参加选举，hidden会同步SECONDARY节点的数据，但对于客户端来说是隐藏的。所以并不会对外提供数据，而arbiterOnly节点不会同步集群的数据，只会参加选举。
配置hidden从库注意事项：
hidden节点必须始终是priority为0，因为hidden节点不能成为primary节点
客户端不会将只读流量发给hidden节点，除了基本复制，这些成员不会收到任何流量
hidden节点可以在副本集选举中投票
配置方法： 在primary节点执行
cfg=rs.conf()
cfg.members[2].priority=0
cfg.members[2].hidden=true
rs.reconfig(cfg)
二、部署shard节点及mongos
2、1 部署shard1
root@bugaoxing:/data/apps/mongodb/config# cat shard1.conf
systemLog:
destination: file
logAppend: true
path: /data/mongodb/shard1/log/shard1.log
storage:
#dbPath: /var/lib/mongo
dbPath: /data/mongodb/shard1/data
journal:
enabled: true
processManagement:
fork: true # fork and run in background
pidFilePath: /data/apps/mongodb/pid/shard1.pid # location of pidfile
net:
port: 27001
#bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
bindIp: 0.0.0.0 # Listen to local interface only, comment to listen on all interfaces.
sharding:
clusterRole: shardsvr
replication:
replSetName: shard1
root@bugaoxing:/data/apps/mongodb/config#
root@bugaoxing:/data/apps/mongodb/config# mongod -f /data/apps/mongodb/config/shard1.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2991
child process started successfully, parent exiting
# 登录任意一台shard节点，初始化副本集
root@bugaoxing:/data/apps/mongodb/config# mongo 127.0.0.1:27001
# 进入mongodb后输入一下内容 记得更改各节点ip，防火墙
# 以下为仲裁节点配置
config = {_id: 'shard1', members: [
{_id: 0, host: '39.103.204.27:27001'},
{_id: 1, host: '49.232.197.39:27001'},
{_id: 2, host: '43.138.41.190:27001' , arbiterOnly: true}]
}
# 以下为不带仲裁节点配置
config = {_id: 'shard1', members: [
{_id: 0, host: '39.103.204.27:27001'},
{_id: 1, host: '49.232.197.39:27001'},
{_id: 2, host: '43.138.41.190:27001'}]
}
# 然后初始化配置
rs.initiate(config)
# 出现 ok 1 则成功
> config = {_id: 'shard1', members: [
... {_id: 0, host: '39.103.204.27:27001'},
... {_id: 1, host: '49.232.197.39:27001'},
... {_id: 2, host: '43.138.41.190:27001' , arbiterOnly: true}]
... }
{
"_id" : "shard1",
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27001"
},
{
"_id" : 1,
"host" : "49.232.197.39:27001"
},
{
"_id" : 2,
"host" : "43.138.41.190:27001",
"arbiterOnly" : true
}
]
}
>
>
>
> rs.initiate(config)
{ "ok" : 1 }
设置hidden
shard1:PRIMARY> cfg=rs.conf()
{
"_id" : "shard1",
"version" : 1,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "49.232.197.39:27001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "43.138.41.190:27001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("6346736d3a10bf51153b640b")
}
}
shard1:PRIMARY> cfg.members[2].priority=0
0
shard1:PRIMARY> cfg.members[2].hidden=true
true
shard1:PRIMARY> rs.reconfig(cfg)
{
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1665562650, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1665562650, 1)
}
shard1:PRIMARY> cfg=rs.conf()
{
"_id" : "shard1",
"version" : 2,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "49.232.197.39:27001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "43.138.41.190:27001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : true,
"priority" : 0,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("6346736d3a10bf51153b640b")
}
}
shard1:PRIMARY>
2、2 部署shard2
注：在配置shard2的时候，如果你将第一台机器分配成仲裁节点，请不要登录第一台机器进行初始化，会报错，只需要换一台机器就可以了。
root@bugaoxing:/data/apps/mongodb/config# cat shard2.conf
systemLog:
destination: file
logAppend: true
path: /data/mongodb/shard2/log/shard2.log
storage:
#dbPath: /var/lib/mongo
dbPath: /data/mongodb/shard2/data
journal:
enabled: true
processManagement:
fork: true # fork and run in background
pidFilePath: /data/apps/mongodb/pid/shard2.pid # location of pidfile
net:
port: 27002
#bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
bindIp: 0.0.0.0 # Listen to local interface only, comment to listen on all interfaces.
sharding:
clusterRole: shardsvr
replication:
replSetName: shard2
root@bugaoxing:/data/apps/mongodb/config#
root@bugaoxing:/data/apps/mongodb/config# mongod -f /data/apps/mongodb/config/shard2.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2991
child process started successfully, parent exiting
# 登录任意一台shard节点，初始化副本集
root@bugaoxing:/data/apps/mongodb/config# mongo 127.0.0.1:27002
# 进入mongodb后输入一下内容 记得更改各节点ip，防火墙
# 以下为仲裁节点配置
config = {_id: 'shard2', members: [
{_id: 0, host: '39.103.204.27:27002'},
{_id: 1, host: '49.232.197.39:27002'},
{_id: 2, host: '43.138.41.190:27002' , arbiterOnly: true}]
}
# 以下为不带仲裁节点配置
config = {_id: 'shard2', members: [
{_id: 0, host: '39.103.204.27:27002'},
{_id: 1, host: '49.232.197.39:27002'},
{_id: 2, host: '43.138.41.190:27002'}]
}
# 然后初始化配置
rs.initiate(config)
# 出现 ok 1 则成功
> config = {_id: 'shard2', members: [
... {_id: 0, host: '39.103.204.27:27002'},
... {_id: 1, host: '49.232.197.39:27002'},
... {_id: 2, host: '43.138.41.190:27002', arbiterOnly: true}]
... }
{
"_id" : "shard2",
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27002"
},
{
"_id" : 1,
"host" : "49.232.197.39:27002"
},
{
"_id" : 2,
"host" : "43.138.41.190:27002",
"arbiterOnly" : true
}
]
}
>
>
> rs.initiate(config)
{ "ok" : 1 }
设置hidden节点
shard2:SECONDARY> cfg=rs.conf()
{
"_id" : "shard2",
"version" : 1,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27002",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "49.232.197.39:27002",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "43.138.41.190:27002",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("634676c55899be79cf346ce7")
}
}
shard2:PRIMARY> cfg.members[2].priority=0
0
shard2:PRIMARY> cfg.members[2].hidden=true
true
shard2:PRIMARY> rs.reconfig(cfg)
{
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1665562354, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1665562354, 1)
}
shard2:PRIMARY>
shard2:PRIMARY>
shard2:PRIMARY>
shard2:PRIMARY> cfg=rs.conf()
{
"_id" : "shard2",
"version" : 2,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27002",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "49.232.197.39:27002",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "43.138.41.190:27002",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : true,
"priority" : 0,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("634676c55899be79cf346ce7")
}
}
shard2:PRIMARY>
shard2:PRIMARY> exit
2、3 部署shard3
root@bugaoxing:/data/apps/mongodb/config# cat shard3.conf
systemLog:
destination: file
logAppend: true
path: /data/mongodb/shard3/log/shard3.log
storage:
#dbPath: /var/lib/mongo
dbPath: /data/mongodb/shard3/data
journal:
enabled: true
processManagement:
fork: true # fork and run in background
pidFilePath: /data/apps/mongodb/pid/shard3.pid # location of pidfile
net:
port: 27003
#bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
bindIp: 0.0.0.0 # Listen to local interface only, comment to listen on all interfaces.
sharding:
clusterRole: shardsvr
replication:
replSetName: shard3
root@bugaoxing:/data/apps/mongodb/config#
root@bugaoxing:/data/apps/mongodb/config# mongod -f /data/apps/mongodb/config/shard3.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2991
child process started successfully, parent exiting
# 登录任意一台shard节点，初始化副本集
root@bugaoxing:/data/apps/mongodb/config# mongo 127.0.0.1:27003
# 进入mongodb后输入一下内容 记得更改各节点ip，防火墙
# 以下为仲裁节点配置
config = {_id: 'shard3', members: [
{_id: 0, host: '39.103.204.27:27003'},
{_id: 1, host: '49.232.197.39:27003'},
{_id: 2, host: '43.138.41.190:27003' , arbiterOnly: true}]
}
# 以下为不带仲裁节点配置
config = {_id: 'shard3', members: [
{_id: 0, host: '39.103.204.27:27003'},
{_id: 1, host: '49.232.197.39:27003'},
{_id: 2, host: '43.138.41.190:27003'}]
}
# 然后初始化配置
rs.initiate(config)
# 出现 ok 1 则成功
> config = {_id: 'shard3', members: [
... {_id: 0, host: '39.103.204.27:27003'},
... {_id: 1, host: '49.232.197.39:27003'},
... {_id: 2, host: '43.138.41.190:27003', arbiterOnly: true}]
... }
{
"_id" : "shard3",
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27003"
},
{
"_id" : 1,
"host" : "49.232.197.39:27003"
},
{
"_id" : 2,
"host" : "43.138.41.190:27003",
"arbiterOnly" : true
}
]
}
> rs.initiate(config)
{
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1665461256, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1665461256, 1)
}
设置hidden从库
shard3:SECONDARY> cfg=rs.conf()
{
"_id" : "shard3",
"version" : 1,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27003",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "49.232.197.39:27003",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "43.138.41.190:27003",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("63467947ea6c526d7bea181a")
}
}
shard3:PRIMARY> cfg.members[2].priority=0
0
shard3:PRIMARY> cfg.members[2].hidden=true
true
shard3:PRIMARY> rs.reconfig(cfg)
{
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1665563016, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1665563016, 1)
}
shard3:PRIMARY> cfg=rs.conf()
{
"_id" : "shard3",
"version" : 2,
"protocolVersion" : NumberLong(1),
"writeConcernMajorityJournalDefault" : true,
"members" : [
{
"_id" : 0,
"host" : "39.103.204.27:27003",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "49.232.197.39:27003",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "43.138.41.190:27003",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : true,
"priority" : 0,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatIntervalMillis" : 2000,
"heartbeatTimeoutSecs" : 10,
"electionTimeoutMillis" : 10000,
"catchUpTimeoutMillis" : -1,
"catchUpTakeoverDelayMillis" : 30000,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
},
"replicaSetId" : ObjectId("63467947ea6c526d7bea181a")
}
}
shard3:PRIMARY>
2、4 部署路由服务器mongos
root@VM-24-2-ubuntu:/data/apps/mongodb/config# cat mongos.conf
systemLog:
destination: file
logAppend: true
path: /data/mongodb/mongos/log/mongos.log
#dbPath: /var/lib/mongo
processManagement:
fork: true # fork and run in background
pidFilePath: /data/apps/mongodb/pid/mongos.pid # location of pidfile
#timeZoneInfo: /usr/share/zoneinfo
net:
port: 20000
#bindIp: 127.0.0.1 # Listen to local interface only, comment to listen on all interfaces.
bindIp: 0.0.0.0 # Listen to local interface only, comment to listen on all interfaces.
#监听的配置服务器,只能有1个或者3个 configs为配置服务器的副本集名字
sharding:
configDB: configs/39.103.204.27:21000,49.232.197.39:21000,43.138.41.190:21000
## 使用mongos启动 而不是 mongod
root@VM-24-2-ubuntu:/data/apps/mongodb/config# mongos -f /data/apps/mongodb/config/mongos.conf
about to fork child process, waiting until server is ready for connections.
forked process: 195471
child process started successfully, parent exiting
三、启动分片
目前搭建了mongodb配置服务器、路由服务器，各个分片服务器，不过应用程序连接到mongos路由服务器并不能使用分片机制，还需要在程序里设置分片配置，让分片生效。
片键是集合的一个键，MongoDB根据这个键拆分数据。例如，如果选择基于“username”进行分片，MongoDB会根据不同的用户名进行分片。选择片键可以认为是选择集合中数据的顺序。它与索引是个相似的概念：随着集合的不断增长，片键就会成为集合上最重要的索引。只有被索引过的键才能够作为片键.
仲裁节点：
sh.addShard("shard1/39.103.204.27:27001,49.232.197.39:27001,43.138.41.190:27001")
sh.addShard("shard2/39.103.204.27:27002,49.232.197.39:27002,43.138.41.190:27002")
sh.addShard("shard3/39.103.204.27:27003,49.232.197.39:27003,43.138.41.190:27003")
hidden节点：
sh.addShard("shard1/39.103.204.27:27001,49.232.197.39:27001")
sh.addShard("shard2/39.103.204.27:27002,49.232.197.39:27002")
sh.addShard("shard3/39.103.204.27:27003,49.232.197.39:27003")
3、1 启动分片
以下为仲裁节点启动方式
root@bugaoxing:/data/apps/mongodb/config# mongo 127.0.0.1:20000
MongoDB shell version v4.4.10
connecting to: mongodb://127.0.0.1:20000/test?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("a3741440-8529-45f3-a183-5948e3b10983") }
MongoDB server version: 4.4.10
---
The server generated these startup warnings when booting:
2022-10-11T14:00:06.725+08:00: Access control is not enabled for the database. Read and write access to data and configuration is unrestricted
2022-10-11T14:00:06.725+08:00: You are running this process as the root user, which is not recommended
---
mongos>
mongos> use admin
switched to db admin
mongos>
mongos> sh.addShard("shard1/39.103.204.27:27001,49.232.197.39:27001,43.138.41.190:27001")
{
"shardAdded" : "shard1",
"ok" : 1,
"operationTime" : Timestamp(1665468514, 4),
"$clusterTime" : {
"clusterTime" : Timestamp(1665468514, 4),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos> sh.addShard("shard2/39.103.204.27:27002,49.232.197.39:27002,43.138.41.190:27002")
{
"shardAdded" : "shard2",
"ok" : 1,
"operationTime" : Timestamp(1665468527, 3),
"$clusterTime" : {
"clusterTime" : Timestamp(1665468527, 4),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos> sh.addShard("shard3/39.103.204.27:27003,49.232.197.39:27003,43.138.41.190:27003")
{
"shardAdded" : "shard3",
"ok" : 1,
"operationTime" : Timestamp(1665468535, 5),
"$clusterTime" : {
"clusterTime" : Timestamp(1665468535, 5),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("6343fc9741b232fb9010faab")
}
shards:
{ "_id" : "shard1", "host" : "shard1/39.103.204.27:27001,49.232.197.39:27001", "state" : 1 }
{ "_id" : "shard2", "host" : "shard2/39.103.204.27:27002,49.232.197.39:27002", "state" : 1 }
{ "_id" : "shard3", "host" : "shard3/39.103.204.27:27003,49.232.197.39:27003", "state" : 1 }
active mongoses:
"4.4.10" : 3
autosplit:
Currently enabled: yes
balancer:
Currently enabled: yes
Currently running: no
Failed balancer rounds in last 5 attempts: 0
Migration Results for the last 24 hours:
No recent migrations
databases:
{ "_id" : "config", "primary" : "config", "partitioned" : true }
以下为hidden节点启动方式
mongos> sh.addShard("shard1/39.103.204.27:27001,49.232.197.39:27001")
{
"shardAdded" : "shard1",
"ok" : 1,
"operationTime" : Timestamp(1665563739, 8),
"$clusterTime" : {
"clusterTime" : Timestamp(1665563739, 8),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos> sh.addShard("shard2/39.103.204.27:27002,49.232.197.39:27002")
{
"shardAdded" : "shard2",
"ok" : 1,
"operationTime" : Timestamp(1665563776, 3),
"$clusterTime" : {
"clusterTime" : Timestamp(1665563776, 3),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos> sh.addShard("shard3/39.103.204.27:27003,49.232.197.39:27003")
{
"shardAdded" : "shard3",
"ok" : 1,
"operationTime" : Timestamp(1665563789, 5),
"$clusterTime" : {
"clusterTime" : Timestamp(1665563789, 5),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("63466fe028ab153ff68f35e2")
}
shards:
{ "_id" : "shard1", "host" : "shard1/39.103.204.27:27001,49.232.197.39:27001", "state" : 1 }
{ "_id" : "shard2", "host" : "shard2/39.103.204.27:27002,49.232.197.39:27002", "state" : 1 }
{ "_id" : "shard3", "host" : "shard3/39.103.204.27:27003,49.232.197.39:27003", "state" : 1 }
active mongoses:
"4.4.10" : 3
autosplit:
Currently enabled: yes
balancer:
Currently enabled: yes
Currently running: no
Failed balancer rounds in last 5 attempts: 0
Migration Results for the last 24 hours:
No recent migrations
databases:
{ "_id" : "config", "primary" : "config", "partitioned" : true }
3、2 测试
目前配置服务、路由服务、分片服务、副本集服务都已经串联起来了，但我们的目的是希望插入数据，数据能够自动分片。连接在mongos上，准备让指定的数据库、指定的集合分片生效。
设置分片chunk大小
root@bugaoxing:/data/apps/mongodb/config# mongo mongodb://39.103.204.27:20000,49.232.197.39:20000,43.138.41.190:20000/
MongoDB shell version v4.4.10
connecting to: mongodb://39.103.204.27:20000,49.232.197.39:20000,43.138.41.190:20000/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("94567086-d2b1-4b85-8b1c-acb8290c110b") }
MongoDB server version: 4.4.10
---
The server generated these startup warnings when booting:
2022-10-12T16:33:18.306+08:00: Access control is not enabled for the database. Read and write access to data and configuration is unrestricted
2022-10-12T16:33:18.306+08:00: You are running this process as the root user, which is not recommended
---
mongos>
mongos> use config
switched to db config
mongos> db.settings.save({ "_id" : "chunksize", "value" : 1 })
WriteResult({ "nMatched" : 0, "nUpserted" : 1, "nModified" : 0, "_id" : "chunksize" })
**数据库分片功能
语法：( { enablesharding : “数据库名称” } )
mongos> db.runCommand( { enablesharding : “test” } )
或者mongos>sh.enableSharding(“test”)
##use到admin库下执行，否则会报错
mongos> use admin
switched to db admin
mongos> sh.enableSharding("test")
{
"ok" : 1,
"operationTime" : Timestamp(1665566334, 7),
"$clusterTime" : {
"clusterTime" : Timestamp(1665566334, 7),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos>
指定数据库里需要分片的集合和片键
db.runCommand( { shardcollection : “test.users”,key : {user_id: 1} } )
或者sh.shardCollection(“test.users”, {user_id: 1})
mongos> use test
switched to db test
mongos>
mongos>
mongos> db.users.createIndex({user_id : 1})
{
"raw" : {
"shard2/39.103.204.27:27002,49.232.197.39:27002" : {
"createdCollectionAutomatically" : true,
"numIndexesBefore" : 1,
"numIndexesAfter" : 2,
"commitQuorum" : "votingMembers",
"ok" : 1
}
},
"ok" : 1,
"operationTime" : Timestamp(1665566368, 2),
"$clusterTime" : {
"clusterTime" : Timestamp(1665566368, 2),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
我们设置test的users表需要分片，根据 id 自动分片到 shard1 ，shard2，shard3 上面去。要这样设置是因为不是所有mongodb 的数据库和表都需要分片！
插入数据测试分片效果
mongos> for (var i = 1; i <= 100000; i++) db.users.save({user_id:i,username:"user"+i});
WriteResult({ "nInserted" : 1 })
查看分片情况如下，此处省略其他信息
mongos> db.users.stats()
{
"sharded" : false,
"primary" : "shard2",
"capped" : false,
"wiredTiger" : {
"metadata" : {
"formatVersion" : 1
},
"creationString" : "access_pattern_hint=none,allocation_size=4KB,app_metadata=(formatVersion=1),assert=(commit_timestamp=none,durable_timestamp=none,read_timestamp=none,write_timestamp=off),block_allocation=best,block_compressor=snappy,cache_resident=false,checksum=on,colgroups=,collator=,columns=,dictionary=0,encryption=(keyid=,name=),exclusive=false,extractor=,format=btree,huffman_key=,huffman_value=,ignore_in_memory_cache_size=false,immutable=false,import=(enabled=false,file_metadata=,repair=false),internal_item_max=0,internal_key_max=0,internal_key_truncate=true,internal_page_max=4KB,key_format=q,key_gap=10,leaf_item_max=0,leaf_key_max=0,leaf_page_max=32KB,leaf_value_max=64MB,log=(enabled=false),lsm=(auto_throttle=true,bloom=true,bloom_bit_count=16,bloom_config=,bloom_hash_count=8,bloom_oldest=false,chunk_count_limit=0,chunk_max=5GB,chunk_size=10MB,merge_custom=(prefix=,start_generation=0,suffix=),merge_max=15,merge_min=0),memory_page_image_max=0,memory_page_max=10m,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=false,prefix_compression_min=4,readonly=false,source=,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,tiered_object=false,tiered_storage=(auth_token=,bucket=,bucket_prefix=,cache_directory=,local_retention=300,name=,object_target_size=10M),type=file,value_format=u,verbose=[],write_timestamp_usage=none",
"type" : "file",
"uri" : "statistics:table:collection-35-8856345805109314156",
"LSM" : {
"bloom filter false positives" : 0,
"bloom filter hits" : 0,
"bloom filter misses" : 0,
"bloom filter pages evicted from cache" : 0,
"bloom filter pages read into cache" : 0,
"bloom filters in the LSM tree" : 0,
"chunks in the LSM tree" : 0,
"highest merge generation in the LSM tree" : 0,
"queries that could have benefited from a Bloom filter that did not exist" : 0,
"sleep for LSM checkpoint throttle" : 0,
"sleep for LSM merge throttle" : 0,
"total size of bloom filters" : 0
},
"block-manager" : {
"allocations requiring file extension" : 100,
"blocks allocated" : 1123,
"blocks freed" : 882,
"checkpoint size" : 1646592,
"file allocation unit size" : 4096,
"file bytes available for reuse" : 847872,
"file magic number" : 120897,
"file major version number" : 1,
"file size in bytes" : 2510848,
"minor version number" : 0
},
"btree" : {
"btree checkpoint generation" : 176,
"btree clean tree checkpoint expiration time" : NumberLong("9223372036854775807"),
"column-store fixed-size leaf pages" : 0,
"column-store internal pages" : 0,
"column-store variable-size RLE encoded values" : 0,
"column-store variable-size deleted values" : 0,
"column-store variable-size leaf pages" : 0,
"fixed-record size" : 0,
"maximum internal page key size" : 368,
"maximum internal page size" : 4096,
"maximum leaf page key size" : 2867,
"maximum leaf page size" : 32768,
"maximum leaf page value size" : 67108864,
"maximum tree depth" : 3,
"number of key/value pairs" : 0,
"overflow pages" : 0,
"pages rewritten by compaction" : 0,
"row-store empty values" : 0,
"row-store internal pages" : 0,
"row-store leaf pages" : 0
},
"cache" : {
"bytes currently in the cache" : 7990950,
"bytes dirty in the cache cumulative" : 213310601,
"bytes read into cache" : 0,
"bytes written from cache" : 108729333,
"checkpoint blocked page eviction" : 0,
"checkpoint of history store file blocked non-history store page eviction" : 0,
"data source pages selected for eviction unable to be evicted" : 0,
"eviction gave up due to detecting an out of order on disk value behind the last update on the chain" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update after validating the update chain" : 0,
"eviction gave up due to detecting out of order timestamps on the update chain after the selected on disk update" : 0,
"eviction walk passes of a file" : 86,
"eviction walk target pages histogram - 0-9" : 1,
"eviction walk target pages histogram - 10-31" : 1,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 84,
"eviction walk target pages histogram - 64-128" : 0,
"eviction walk target pages reduced due to history store cache pressure" : 0,
"eviction walks abandoned" : 0,
"eviction walks gave up because they restarted their walk twice" : 86,
"eviction walks gave up because they saw too many pages and found no candidates" : 0,
"eviction walks gave up because they saw too many pages and found too few candidates" : 0,
"eviction walks reached end of tree" : 172,
"eviction walks restarted" : 0,
"eviction walks started from root of tree" : 86,
"eviction walks started from saved location in tree" : 0,
"hazard pointer blocked page eviction" : 0,
"history store table insert calls" : 0,
"history store table insert calls that returned restart" : 0,
"history store table out-of-order resolved updates that lose their durable timestamp" : 0,
"history store table out-of-order updates that were fixed up by reinserting with the fixed timestamp" : 0,
"history store table reads" : 0,
"history store table reads missed" : 0,
"history store table reads requiring squashed modifies" : 0,
"history store table truncation by rollback to stable to remove an unstable update" : 0,
"history store table truncation by rollback to stable to remove an update" : 0,
"history store table truncation to remove an update" : 0,
"history store table truncation to remove range of updates due to key being removed from the data page during reconciliation" : 0,
"history store table truncation to remove range of updates due to out-of-order timestamp update on data page" : 0,
"history store table writes requiring squashed modifies" : 0,
"in-memory page passed criteria to be split" : 2,
"in-memory page splits" : 1,
"internal pages evicted" : 0,
"internal pages split during eviction" : 0,
"leaf pages split during eviction" : 1,
"modified pages evicted" : 1,
"overflow pages read into cache" : 0,
"page split during eviction deepened the tree" : 0,
"page written requiring history store records" : 0,
"pages read into cache" : 0,
"pages read into cache after truncate" : 1,
"pages read into cache after truncate in prepare state" : 0,
"pages requested from the cache" : 100084,
"pages seen by eviction walk" : 173,
"pages written from cache" : 1001,
"pages written requiring in-memory restoration" : 0,
"tracked dirty bytes in the cache" : 0,
"unmodified pages evicted" : 0
},
"cache_walk" : {
"Average difference between current eviction generation when the page was last considered" : 0,
"Average on-disk page image size seen" : 0,
"Average time in cache for pages that have been visited by the eviction server" : 0,
"Average time in cache for pages that have not been visited by the eviction server" : 0,
"Clean pages currently in cache" : 0,
"Current eviction generation" : 0,
"Dirty pages currently in cache" : 0,
"Entries in the root page" : 0,
"Internal pages currently in cache" : 0,
"Leaf pages currently in cache" : 0,
"Maximum difference between current eviction generation when the page was last considered" : 0,
"Maximum page size seen" : 0,
"Minimum on-disk page image size seen" : 0,
"Number of pages never visited by eviction server" : 0,
"On-disk page image sizes smaller than a single allocation unit" : 0,
"Pages created in memory and never written" : 0,
"Pages currently queued for eviction" : 0,
"Pages that could not be queued for eviction" : 0,
"Refs skipped during cache traversal" : 0,
"Size of the root page" : 0,
"Total number of pages currently in cache" : 0
},
"checkpoint-cleanup" : {
"pages added for eviction" : 0,
"pages removed" : 0,
"pages skipped during tree walk" : 403,
"pages visited" : 480
},
"compression" : {
"compressed page maximum internal page size prior to compression" : 4096,
"compressed page maximum leaf page size prior to compression " : 131072,
"compressed pages read" : 0,
"compressed pages written" : 940,
"page written failed to compress" : 0,
"page written was too small to compress" : 61
},
"cursor" : {
"Total number of entries skipped by cursor next calls" : 0,
"Total number of entries skipped by cursor prev calls" : 0,
"Total number of entries skipped to position the history store cursor" : 0,
"Total number of times a search near has exited due to prefix config" : 0,
"bulk loaded cursor insert calls" : 0,
"cache cursors reuse count" : 100000,
"close calls that result in cache" : 100004,
"create calls" : 8,
"cursor next calls that skip due to a globally visible history store tombstone" : 0,
"cursor next calls that skip greater than or equal to 100 entries" : 0,
"cursor next calls that skip less than 100 entries" : 1003,
"cursor prev calls that skip due to a globally visible history store tombstone" : 0,
"cursor prev calls that skip greater than or equal to 100 entries" : 0,
"cursor prev calls that skip less than 100 entries" : 1,
"insert calls" : 100000,
"insert key and value bytes" : 6606530,
"modify" : 0,
"modify key and value bytes affected" : 0,
"modify value bytes modified" : 0,
"next calls" : 1003,
"open cursor count" : 0,
"operation restarted" : 0,
"prev calls" : 1,
"remove calls" : 0,
"remove key bytes removed" : 0,
"reserve calls" : 0,
"reset calls" : 200011,
"search calls" : 0,
"search history store calls" : 0,
"search near calls" : 1,
"truncate calls" : 0,
"update calls" : 0,
"update key and value bytes" : 0,
"update value size change" : 0
},
"reconciliation" : {
"approximate byte size of timestamps in pages written" : 139184,
"approximate byte size of transaction IDs in pages written" : 0,
"dictionary matches" : 0,
"fast-path pages deleted" : 0,
"internal page key bytes discarded using suffix compression" : 1797,
"internal page multi-block writes" : 0,
"internal-page overflow keys" : 0,
"leaf page key bytes discarded using prefix compression" : 0,
"leaf page multi-block writes" : 60,
"leaf-page overflow keys" : 0,
"maximum blocks required for a page" : 1,
"overflow values written" : 0,
"page checksum matches" : 0,
"page reconciliation calls" : 123,
"page reconciliation calls for eviction" : 0,
"pages deleted" : 0,
"pages written including an aggregated newest start durable timestamp " : 61,
"pages written including an aggregated newest stop durable timestamp " : 0,
"pages written including an aggregated newest stop timestamp " : 0,
"pages written including an aggregated newest stop transaction ID" : 0,
"pages written including an aggregated newest transaction ID " : 0,
"pages written including an aggregated oldest start timestamp " : 0,
"pages written including an aggregated prepare" : 0,
"pages written including at least one prepare" : 0,
"pages written including at least one start durable timestamp" : 74,
"pages written including at least one start timestamp" : 74,
"pages written including at least one start transaction ID" : 0,
"pages written including at least one stop durable timestamp" : 0,
"pages written including at least one stop timestamp" : 0,
"pages written including at least one stop transaction ID" : 0,
"records written including a prepare" : 0,
"records written including a start durable timestamp" : 8699,
"records written including a start timestamp" : 8699,
"records written including a start transaction ID" : 0,
"records written including a stop durable timestamp" : 0,
"records written including a stop timestamp" : 0,
"records written including a stop transaction ID" : 0
},
"session" : {
"object compaction" : 0,
"tiered operations dequeued and processed" : 0,
"tiered operations scheduled" : 0,
"tiered storage local retention time (secs)" : 0,
"tiered storage object size" : 0
},
"transaction" : {
"race to read prepared update retry" : 0,
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"rollback to stable inconsistent checkpoint" : 0,
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"rollback to stable restored tombstones from history store" : 0,
"rollback to stable restored updates from history store" : 0,
"rollback to stable skipping delete rle" : 0,
"rollback to stable skipping stable rle" : 0,
"rollback to stable sweeping history store keys" : 0,
"rollback to stable updates removed from history store" : 0,
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}
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"storageSize" : 2510848,
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"avgObjSize" : 62,
"maxSize" : NumberLong(0),
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"shards" : {
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"storageSize" : 2510848,
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},
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"blocks freed" : 882,
"checkpoint size" : 1646592,
"file allocation unit size" : 4096,
"file bytes available for reuse" : 847872,
"file magic number" : 120897,
"file major version number" : 1,
"file size in bytes" : 2510848,
"minor version number" : 0
},
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"btree clean tree checkpoint expiration time" : NumberLong("9223372036854775807"),
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"column-store internal pages" : 0,
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"maximum internal page size" : 4096,
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"maximum leaf page size" : 32768,
"maximum leaf page value size" : 67108864,
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"bytes dirty in the cache cumulative" : 213310601,
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"bytes written from cache" : 108729333,
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"data source pages selected for eviction unable to be evicted" : 0,
"eviction gave up due to detecting an out of order on disk value behind the last update on the chain" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update after validating the update chain" : 0,
"eviction gave up due to detecting out of order timestamps on the update chain after the selected on disk update" : 0,
"eviction walk passes of a file" : 86,
"eviction walk target pages histogram - 0-9" : 1,
"eviction walk target pages histogram - 10-31" : 1,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 84,
"eviction walk target pages histogram - 64-128" : 0,
"eviction walk target pages reduced due to history store cache pressure" : 0,
"eviction walks abandoned" : 0,
"eviction walks gave up because they restarted their walk twice" : 86,
"eviction walks gave up because they saw too many pages and found no candidates" : 0,
"eviction walks gave up because they saw too many pages and found too few candidates" : 0,
"eviction walks reached end of tree" : 172,
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"eviction walks started from root of tree" : 86,
"eviction walks started from saved location in tree" : 0,
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"history store table insert calls that returned restart" : 0,
"history store table out-of-order resolved updates that lose their durable timestamp" : 0,
"history store table out-of-order updates that were fixed up by reinserting with the fixed timestamp" : 0,
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"history store table reads missed" : 0,
"history store table reads requiring squashed modifies" : 0,
"history store table truncation by rollback to stable to remove an unstable update" : 0,
"history store table truncation by rollback to stable to remove an update" : 0,
"history store table truncation to remove an update" : 0,
"history store table truncation to remove range of updates due to key being removed from the data page during reconciliation" : 0,
"history store table truncation to remove range of updates due to out-of-order timestamp update on data page" : 0,
"history store table writes requiring squashed modifies" : 0,
"in-memory page passed criteria to be split" : 2,
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"page split during eviction deepened the tree" : 0,
"page written requiring history store records" : 0,
"pages read into cache" : 0,
"pages read into cache after truncate" : 1,
"pages read into cache after truncate in prepare state" : 0,
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"pages seen by eviction walk" : 173,
"pages written from cache" : 1001,
"pages written requiring in-memory restoration" : 0,
"tracked dirty bytes in the cache" : 0,
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},
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"On-disk page image sizes smaller than a single allocation unit" : 0,
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"Pages that could not be queued for eviction" : 0,
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},
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"pages removed" : 0,
"pages skipped during tree walk" : 403,
"pages visited" : 480
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"compression" : {
"compressed page maximum internal page size prior to compression" : 4096,
"compressed page maximum leaf page size prior to compression " : 131072,
"compressed pages read" : 0,
"compressed pages written" : 940,
"page written failed to compress" : 0,
"page written was too small to compress" : 61
},
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"Total number of entries skipped by cursor prev calls" : 0,
"Total number of entries skipped to position the history store cursor" : 0,
"Total number of times a search near has exited due to prefix config" : 0,
"bulk loaded cursor insert calls" : 0,
"cache cursors reuse count" : 100000,
"close calls that result in cache" : 100004,
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"cursor next calls that skip greater than or equal to 100 entries" : 0,
"cursor next calls that skip less than 100 entries" : 1003,
"cursor prev calls that skip due to a globally visible history store tombstone" : 0,
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"insert calls" : 100000,
"insert key and value bytes" : 6606530,
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"truncate calls" : 0,
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"update value size change" : 0
},
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"approximate byte size of transaction IDs in pages written" : 0,
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"internal page key bytes discarded using suffix compression" : 1797,
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"leaf page multi-block writes" : 60,
"leaf-page overflow keys" : 0,
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"page reconciliation calls" : 123,
"page reconciliation calls for eviction" : 0,
"pages deleted" : 0,
"pages written including an aggregated newest start durable timestamp " : 61,
"pages written including an aggregated newest stop durable timestamp " : 0,
"pages written including an aggregated newest stop timestamp " : 0,
"pages written including an aggregated newest stop transaction ID" : 0,
"pages written including an aggregated newest transaction ID " : 0,
"pages written including an aggregated oldest start timestamp " : 0,
"pages written including an aggregated prepare" : 0,
"pages written including at least one prepare" : 0,
"pages written including at least one start durable timestamp" : 74,
"pages written including at least one start timestamp" : 74,
"pages written including at least one start transaction ID" : 0,
"pages written including at least one stop durable timestamp" : 0,
"pages written including at least one stop timestamp" : 0,
"pages written including at least one stop transaction ID" : 0,
"records written including a prepare" : 0,
"records written including a start durable timestamp" : 8699,
"records written including a start timestamp" : 8699,
"records written including a start transaction ID" : 0,
"records written including a stop durable timestamp" : 0,
"records written including a stop timestamp" : 0,
"records written including a stop transaction ID" : 0
},
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},
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"rollback to stable inconsistent checkpoint" : 0,
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"rollback to stable keys restored" : 0,
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"rollback to stable restored updates from history store" : 0,
"rollback to stable skipping delete rle" : 0,
"rollback to stable skipping stable rle" : 0,
"rollback to stable sweeping history store keys" : 0,
"rollback to stable updates removed from history store" : 0,
"transaction checkpoints due to obsolete pages" : 0,
"update conflicts" : 0
}
},
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"indexDetails" : {
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},
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"queries that could have benefited from a Bloom filter that did not exist" : 0,
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},
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},
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"btree clean tree checkpoint expiration time" : NumberLong("9223372036854775807"),
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"bytes dirty in the cache cumulative" : 114698206,
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"bytes written from cache" : 18626770,
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"eviction gave up due to detecting an out of order on disk value behind the last update on the chain" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update after validating the update chain" : 0,
"eviction gave up due to detecting out of order timestamps on the update chain after the selected on disk update" : 0,
"eviction walk passes of a file" : 86,
"eviction walk target pages histogram - 0-9" : 1,
"eviction walk target pages histogram - 10-31" : 1,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 84,
"eviction walk target pages histogram - 64-128" : 0,
"eviction walk target pages reduced due to history store cache pressure" : 0,
"eviction walks abandoned" : 0,
"eviction walks gave up because they restarted their walk twice" : 86,
"eviction walks gave up because they saw too many pages and found no candidates" : 0,
"eviction walks gave up because they saw too many pages and found too few candidates" : 0,
"eviction walks reached end of tree" : 172,
"eviction walks restarted" : 0,
"eviction walks started from root of tree" : 86,
"eviction walks started from saved location in tree" : 0,
"hazard pointer blocked page eviction" : 0,
"history store table insert calls" : 0,
"history store table insert calls that returned restart" : 0,
"history store table out-of-order resolved updates that lose their durable timestamp" : 0,
"history store table out-of-order updates that were fixed up by reinserting with the fixed timestamp" : 0,
"history store table reads" : 0,
"history store table reads missed" : 0,
"history store table reads requiring squashed modifies" : 0,
"history store table truncation by rollback to stable to remove an unstable update" : 0,
"history store table truncation by rollback to stable to remove an update" : 0,
"history store table truncation to remove an update" : 0,
"history store table truncation to remove range of updates due to key being removed from the data page during reconciliation" : 0,
"history store table truncation to remove range of updates due to out-of-order timestamp update on data page" : 0,
"history store table writes requiring squashed modifies" : 0,
"in-memory page passed criteria to be split" : 4,
"in-memory page splits" : 2,
"internal pages evicted" : 0,
"internal pages split during eviction" : 0,
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"modified pages evicted" : 1,
"overflow pages read into cache" : 0,
"page split during eviction deepened the tree" : 0,
"page written requiring history store records" : 0,
"pages read into cache" : 0,
"pages read into cache after truncate" : 1,
"pages read into cache after truncate in prepare state" : 0,
"pages requested from the cache" : 100083,
"pages seen by eviction walk" : 257,
"pages written from cache" : 1342,
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"tracked dirty bytes in the cache" : 0,
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},
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"Average on-disk page image size seen" : 0,
"Average time in cache for pages that have been visited by the eviction server" : 0,
"Average time in cache for pages that have not been visited by the eviction server" : 0,
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"Number of pages never visited by eviction server" : 0,
"On-disk page image sizes smaller than a single allocation unit" : 0,
"Pages created in memory and never written" : 0,
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"Pages that could not be queued for eviction" : 0,
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"Size of the root page" : 0,
"Total number of pages currently in cache" : 0
},
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"pages removed" : 0,
"pages skipped during tree walk" : 1290,
"pages visited" : 1371
},
"compression" : {
"compressed page maximum internal page size prior to compression" : 16384,
"compressed page maximum leaf page size prior to compression " : 16384,
"compressed pages read" : 0,
"compressed pages written" : 0,
"page written failed to compress" : 0,
"page written was too small to compress" : 0
},
"cursor" : {
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"Total number of entries skipped by cursor prev calls" : 0,
"Total number of entries skipped to position the history store cursor" : 0,
"Total number of times a search near has exited due to prefix config" : 0,
"bulk loaded cursor insert calls" : 0,
"cache cursors reuse count" : 99996,
"close calls that result in cache" : 100000,
"create calls" : 7,
"cursor next calls that skip due to a globally visible history store tombstone" : 0,
"cursor next calls that skip greater than or equal to 100 entries" : 0,
"cursor next calls that skip less than 100 entries" : 0,
"cursor prev calls that skip due to a globally visible history store tombstone" : 0,
"cursor prev calls that skip greater than or equal to 100 entries" : 0,
"cursor prev calls that skip less than 100 entries" : 0,
"insert calls" : 100000,
"insert key and value bytes" : 1698977,
"modify" : 0,
"modify key and value bytes affected" : 0,
"modify value bytes modified" : 0,
"next calls" : 0,
"open cursor count" : 0,
"operation restarted" : 0,
"prev calls" : 0,
"remove calls" : 0,
"remove key bytes removed" : 0,
"reserve calls" : 0,
"reset calls" : 200000,
"search calls" : 0,
"search history store calls" : 0,
"search near calls" : 0,
"truncate calls" : 0,
"update calls" : 0,
"update key and value bytes" : 0,
"update value size change" : 0
},
"reconciliation" : {
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"approximate byte size of transaction IDs in pages written" : 0,
"dictionary matches" : 0,
"fast-path pages deleted" : 0,
"internal page key bytes discarded using suffix compression" : 5792,
"internal page multi-block writes" : 0,
"internal-page overflow keys" : 0,
"leaf page key bytes discarded using prefix compression" : 4983883,
"leaf page multi-block writes" : 61,
"leaf-page overflow keys" : 0,
"maximum blocks required for a page" : 1,
"overflow values written" : 0,
"page checksum matches" : 0,
"page reconciliation calls" : 124,
"page reconciliation calls for eviction" : 0,
"pages deleted" : 0,
"pages written including an aggregated newest start durable timestamp " : 61,
"pages written including an aggregated newest stop durable timestamp " : 0,
"pages written including an aggregated newest stop timestamp " : 0,
"pages written including an aggregated newest stop transaction ID" : 0,
"pages written including an aggregated newest transaction ID " : 0,
"pages written including an aggregated oldest start timestamp " : 0,
"pages written including an aggregated prepare" : 0,
"pages written including at least one prepare" : 0,
"pages written including at least one start durable timestamp" : 95,
"pages written including at least one start timestamp" : 95,
"pages written including at least one start transaction ID" : 0,
"pages written including at least one stop durable timestamp" : 0,
"pages written including at least one stop timestamp" : 0,
"pages written including at least one stop transaction ID" : 0,
"records written including a prepare" : 0,
"records written including a start durable timestamp" : 8703,
"records written including a start timestamp" : 8703,
"records written including a start transaction ID" : 0,
"records written including a stop durable timestamp" : 0,
"records written including a stop timestamp" : 0,
"records written including a stop transaction ID" : 0
},
"session" : {
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"tiered operations dequeued and processed" : 0,
"tiered operations scheduled" : 0,
"tiered storage local retention time (secs)" : 0,
"tiered storage object size" : 0
},
"transaction" : {
"race to read prepared update retry" : 0,
"rollback to stable history store records with stop timestamps older than newer records" : 0,
"rollback to stable inconsistent checkpoint" : 0,
"rollback to stable keys removed" : 0,
"rollback to stable keys restored" : 0,
"rollback to stable restored tombstones from history store" : 0,
"rollback to stable restored updates from history store" : 0,
"rollback to stable skipping delete rle" : 0,
"rollback to stable skipping stable rle" : 0,
"rollback to stable sweeping history store keys" : 0,
"rollback to stable updates removed from history store" : 0,
"transaction checkpoints due to obsolete pages" : 0,
"update conflicts" : 0
}
},
"user_id_1" : {
"metadata" : {
"formatVersion" : 8
},
"creationString" : "access_pattern_hint=none,allocation_size=4KB,app_metadata=(formatVersion=8),assert=(commit_timestamp=none,durable_timestamp=none,read_timestamp=none,write_timestamp=off),block_allocation=best,block_compressor=,cache_resident=false,checksum=on,colgroups=,collator=,columns=,dictionary=0,encryption=(keyid=,name=),exclusive=false,extractor=,format=btree,huffman_key=,huffman_value=,ignore_in_memory_cache_size=false,immutable=false,import=(enabled=false,file_metadata=,repair=false),internal_item_max=0,internal_key_max=0,internal_key_truncate=true,internal_page_max=16k,key_format=u,key_gap=10,leaf_item_max=0,leaf_key_max=0,leaf_page_max=16k,leaf_value_max=0,log=(enabled=false),lsm=(auto_throttle=true,bloom=true,bloom_bit_count=16,bloom_config=,bloom_hash_count=8,bloom_oldest=false,chunk_count_limit=0,chunk_max=5GB,chunk_size=10MB,merge_custom=(prefix=,start_generation=0,suffix=),merge_max=15,merge_min=0),memory_page_image_max=0,memory_page_max=5MB,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=true,prefix_compression_min=4,readonly=false,source=,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,tiered_object=false,tiered_storage=(auth_token=,bucket=,bucket_prefix=,cache_directory=,local_retention=300,name=,object_target_size=10M),type=file,value_format=u,verbose=[],write_timestamp_usage=none",
"type" : "file",
"uri" : "statistics:table:index-37-8856345805109314156",
"LSM" : {
"bloom filter false positives" : 0,
"bloom filter hits" : 0,
"bloom filter misses" : 0,
"bloom filter pages evicted from cache" : 0,
"bloom filter pages read into cache" : 0,
"bloom filters in the LSM tree" : 0,
"chunks in the LSM tree" : 0,
"highest merge generation in the LSM tree" : 0,
"queries that could have benefited from a Bloom filter that did not exist" : 0,
"sleep for LSM checkpoint throttle" : 0,
"sleep for LSM merge throttle" : 0,
"total size of bloom filters" : 0
},
"block-manager" : {
"allocations requiring file extension" : 111,
"blocks allocated" : 1143,
"blocks freed" : 887,
"checkpoint size" : 1187840,
"file allocation unit size" : 4096,
"file bytes available for reuse" : 389120,
"file magic number" : 120897,
"file major version number" : 1,
"file size in bytes" : 1593344,
"minor version number" : 0
},
"btree" : {
"btree checkpoint generation" : 176,
"btree clean tree checkpoint expiration time" : NumberLong("9223372036854775807"),
"column-store fixed-size leaf pages" : 0,
"column-store internal pages" : 0,
"column-store variable-size RLE encoded values" : 0,
"column-store variable-size deleted values" : 0,
"column-store variable-size leaf pages" : 0,
"fixed-record size" : 0,
"maximum internal page key size" : 1474,
"maximum internal page size" : 16384,
"maximum leaf page key size" : 1474,
"maximum leaf page size" : 16384,
"maximum leaf page value size" : 7372,
"maximum tree depth" : 3,
"number of key/value pairs" : 0,
"overflow pages" : 0,
"pages rewritten by compaction" : 0,
"row-store empty values" : 0,
"row-store internal pages" : 0,
"row-store leaf pages" : 0
},
"cache" : {
"bytes currently in the cache" : 6092356,
"bytes dirty in the cache cumulative" : 126763753,
"bytes read into cache" : 0,
"bytes written from cache" : 13834392,
"checkpoint blocked page eviction" : 0,
"checkpoint of history store file blocked non-history store page eviction" : 0,
"data source pages selected for eviction unable to be evicted" : 0,
"eviction gave up due to detecting an out of order on disk value behind the last update on the chain" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update" : 0,
"eviction gave up due to detecting an out of order tombstone ahead of the selected on disk update after validating the update chain" : 0,
"eviction gave up due to detecting out of order timestamps on the update chain after the selected on disk update" : 0,
"eviction walk passes of a file" : 86,
"eviction walk target pages histogram - 0-9" : 1,
"eviction walk target pages histogram - 10-31" : 1,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 84,
"eviction walk target pages histogram - 64-128" : 0,
"eviction walk target pages reduced due to history store cache pressure" : 0,
"eviction walks abandoned" : 0,
"eviction walks gave up because they restarted their walk twice" : 86,
"eviction walks gave up because they saw too many pages and found no candidates" : 0,
"eviction walks gave up because they saw too many pages and found too few candidates" : 0,
"eviction walks reached end of tree" : 172,
"eviction walks restarted" : 0,
"eviction walks started from root of tree" : 86,
"eviction walks started from saved location in tree" : 0,
"hazard pointer blocked page eviction" : 0,
"history store table insert calls" : 0,
"history store table insert calls that returned restart" : 0,
"history store table out-of-order resolved updates that lose their durable timestamp" : 0,
"history store table out-of-order updates that were fixed up by reinserting with the fixed timestamp" : 0,
"history store table reads" : 0,
"history store table reads missed" : 0,
"history store table reads requiring squashed modifies" : 0,
"history store table truncation by rollback to stable to remove an unstable update" : 0,
"history store table truncation by rollback to stable to remove an update" : 0,
"history store table truncation to remove an update" : 0,
"history store table truncation to remove range of updates due to key being removed from the data page during reconciliation" : 0,
"history store table truncation to remove range of updates due to out-of-order timestamp update on data page" : 0,
"history store table writes requiring squashed modifies" : 0,
"in-memory page passed criteria to be split" : 4,
"in-memory page splits" : 2,
"internal pages evicted" : 0,
"internal pages split during eviction" : 0,
"leaf pages split during eviction" : 1,
"modified pages evicted" : 1,
"overflow pages read into cache" : 0,
"page split during eviction deepened the tree" : 0,
"page written requiring history store records" : 0,
"pages read into cache" : 0,
"pages read into cache after truncate" : 1,
"pages read into cache after truncate in prepare state" : 0,
"pages requested from the cache" : 100077,
"pages seen by eviction walk" : 257,
"pages written from cache" : 1021,
"pages written requiring in-memory restoration" : 0,
"tracked dirty bytes in the cache" : 0,
"unmodified pages evicted" : 0
},
"cache_walk" : {
"Average difference between current eviction generation when the page was last considered" : 0,
"Average on-disk page image size seen" : 0,
"Average time in cache for pages that have been visited by the eviction server" : 0,
"Average time in cache for pages that have not been visited by the eviction server" : 0,
"Clean pages currently in cache" : 0,
"Current eviction generation" : 0,
"Dirty pages currently in cache" : 0,
"Entries in the root page" : 0,
"Internal pages currently in cache" : 0,
"Leaf pages currently in cache" : 0,
"Maximum difference between current eviction generation when the page was last considered" : 0,
"Maximum page size seen" : 0,
"Minimum on-disk page image size seen" : 0,
"Number of pages never visited by eviction server" : 0,
"On-disk page image sizes smaller than a single allocation unit" : 0,
"Pages created in memory and never written" : 0,
"Pages currently queued for eviction" : 0,
"Pages that could not be queued for eviction" : 0,
"Refs skipped during cache traversal" : 0,
"Size of the root page" : 0,
"Total number of pages currently in cache" : 0
},
"checkpoint-cleanup" : {
"pages added for eviction" : 0,
"pages removed" : 0,
"pages skipped during tree walk" : 900,
"pages visited" : 975
},
"compression" : {
"compressed page maximum internal page size prior to compression" : 16384,
"compressed page maximum leaf page size prior to compression " : 16384,
"compressed pages read" : 0,
"compressed pages written" : 0,
"page written failed to compress" : 0,
"page written was too small to compress" : 0
},
"cursor" : {
"Total number of entries skipped by cursor next calls" : 0,
"Total number of entries skipped by cursor prev calls" : 0,
"Total number of entries skipped to position the history store cursor" : 0,
"Total number of times a search near has exited due to prefix config" : 0,
"bulk loaded cursor insert calls" : 0,
"cache cursors reuse count" : 99996,
"close calls that result in cache" : 100000,
"create calls" : 7,
"cursor next calls that skip due to a globally visible history store tombstone" : 0,
"cursor next calls that skip greater than or equal to 100 entries" : 0,
"cursor next calls that skip less than 100 entries" : 0,
"cursor prev calls that skip due to a globally visible history store tombstone" : 0,
"cursor prev calls that skip greater than or equal to 100 entries" : 0,
"cursor prev calls that skip less than 100 entries" : 0,
"insert calls" : 100000,
"insert key and value bytes" : 866083,
"modify" : 0,
"modify key and value bytes affected" : 0,
"modify value bytes modified" : 0,
"next calls" : 0,
"open cursor count" : 0,
"operation restarted" : 0,
"prev calls" : 0,
"remove calls" : 0,
"remove key bytes removed" : 0,
"reserve calls" : 0,
"reset calls" : 200000,
"search calls" : 0,
"search history store calls" : 0,
"search near calls" : 0,
"truncate calls" : 0,
"update calls" : 0,
"update key and value bytes" : 0,
"update value size change" : 0
},
"reconciliation" : {
"approximate byte size of timestamps in pages written" : 139328,
"approximate byte size of transaction IDs in pages written" : 0,
"dictionary matches" : 0,
"fast-path pages deleted" : 0,
"internal page key bytes discarded using suffix compression" : 9178,
"internal page multi-block writes" : 0,
"internal-page overflow keys" : 0,
"leaf page key bytes discarded using prefix compression" : 0,
"leaf page multi-block writes" : 61,
"leaf-page overflow keys" : 0,
"maximum blocks required for a page" : 1,
"overflow values written" : 0,
"page checksum matches" : 0,
"page reconciliation calls" : 124,
"page reconciliation calls for eviction" : 0,
"pages deleted" : 0,
"pages written including an aggregated newest start durable timestamp " : 0,
"pages written including an aggregated newest stop durable timestamp " : 0,
"pages written including an aggregated newest stop timestamp " : 0,
"pages written including an aggregated newest stop transaction ID" : 0,
"pages written including an aggregated newest transaction ID " : 0,
"pages written including an aggregated oldest start timestamp " : 0,
"pages written including an aggregated prepare" : 0,
"pages written including at least one prepare" : 0,
"pages written including at least one start durable timestamp" : 92,
"pages written including at least one start timestamp" : 92,
"pages written including at least one start transaction ID" : 0,
"pages written including at least one stop durable timestamp" : 0,
"pages written including at least one stop timestamp" : 0,
"pages written including at least one stop transaction ID" : 0,
"records written including a prepare" : 0,
"records written including a start durable timestamp" : 8708,
"records written including a start timestamp" : 8708,
"records written including a start transaction ID" : 0,
"records written including a stop durable timestamp" : 0,
"records written including a stop timestamp" : 0,
"records written including a stop transaction ID" : 0
},
"session" : {
"object compaction" : 0,
"tiered operations dequeued and processed" : 0,
"tiered operations scheduled" : 0,
"tiered storage local retention time (secs)" : 0,
"tiered storage object size" : 0
},
"transaction" : {
"race to read prepared update retry" : 0,
"rollback to stable history store records with stop timestamps older than newer records" : 0,
"rollback to stable inconsistent checkpoint" : 0,
"rollback to stable keys removed" : 0,
"rollback to stable keys restored" : 0,
"rollback to stable restored tombstones from history store" : 0,
"rollback to stable restored updates from history store" : 0,
"rollback to stable skipping delete rle" : 0,
"rollback to stable skipping stable rle" : 0,
"rollback to stable sweeping history store keys" : 0,
"rollback to stable updates removed from history store" : 0,
"transaction checkpoints due to obsolete pages" : 0,
"update conflicts" : 0
}
}
},
"indexBuilds" : [ ],
"totalIndexSize" : 3731456,
"totalSize" : 6242304,
"indexSizes" : {
"_id_" : 2138112,
"user_id_1" : 1593344
},
"scaleFactor" : 1,
"ok" : 1,
"$gleStats" : {
"lastOpTime" : Timestamp(0, 0),
"electionId" : ObjectId("7fffffff0000000000000001")
},
"lastCommittedOpTime" : Timestamp(1665572580, 1),
"$configServerState" : {
"opTime" : {
"ts" : Timestamp(1665572580, 2),
"t" : NumberLong(1)
}
},
"$clusterTime" : {
"clusterTime" : Timestamp(1665572580, 2),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1665572580, 1)
}
},
"ok" : 1,
"operationTime" : Timestamp(1665572580, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1665572580, 2),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
mongos>
查看分片信息
mongos> db.printShardingStatus()
或mongos>sh.status()
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("63466fe028ab153ff68f35e2")
}
shards:
{ "_id" : "shard1", "host" : "shard1/39.103.204.27:27001,49.232.197.39:27001", "state" : 1 }
{ "_id" : "shard2", "host" : "shard2/39.103.204.27:27002,49.232.197.39:27002", "state" : 1 }
{ "_id" : "shard3", "host" : "shard3/39.103.204.27:27003,49.232.197.39:27003", "state" : 1 }
active mongoses:
"4.4.10" : 3
autosplit:
Currently enabled: yes
balancer:
Currently enabled: yes
Currently running: no
Failed balancer rounds in last 5 attempts: 0
Migration Results for the last 24 hours:
682 : Success
databases:
{ "_id" : "config", "primary" : "config", "partitioned" : true }
config.system.sessions
shard key: { "_id" : 1 }
unique: false
balancing: true
chunks:
shard1 342
shard2 341
shard3 341
too many chunks to print, use verbose if you want to force print
{ "_id" : "test", "primary" : "shard2", "partitioned" : true, "version" : { "uuid" : UUID("388af51a-fa32-4741-aca3-95d711691406"), "lastMod" : 1 } }
至此，mongodb数据分片集群部署并测试完成 想要看到详细的信息则需要执行：
mongos> sh.status({"verbose":1})
或则
mongos> db.printShardingStatus("vvvv")
或则
mongos> printShardingStatus(db.getSisterDB("config"),1)
查看mongodb集群是否开启了balance状态
mongos> sh.getBalancerState()
true
也可以通过在路由节点mongos上执行sh.status() 查看balance状态。如果balance开启，查看是否正在有数据的迁移
mongos> sh.isBalancerRunning()
false
如果未开启，执行命令
sh.setBalancerState( true )