由于EOS blocks数据同步到Mongo数据库后，体积很大，查询缓慢，并且机器配置比较低，同时运行nodeos写入MongoDB有点遭不住，so，部署下mongo集群，并做分片配置
1. 安装 MongoDB
准备了三台分别1T存储的云主机。三台主机在同一内网，IP分别如下
| 172.31.32.31 | 172.31.32.29 | 172.31.32.30 |
|---|---|---|
| mongos | mongos | mongos |
| config server | config server | config server |
| shard server1 主节点 | shard server1 副节点 | shard server1 仲裁 |
| shard server2 仲裁 | shard server2 主节点 | shard server2 副节点 |
| shard server3 副节点 | shard server3 仲裁 | shard server3 主节点 |
端口分配：
| 占用 | 端口 |
|---|---|
| mongos | 20000 |
| config | 21000 |
| shard1 | 27001 |
| shard2 | 27002 |
| shard3 | 27003 |
分别在每台机器建立conf、mongos、config、shard1、shard2、shard3六个目录，
因为mongos不存储数据，只需要建立日志文件目录即可。/mnt/data为机器挂载的1T存储盘
mkdir -p /mnt/data/mongodb/conf \
mkdir -p /mnt/data/mongodb/mongos/log \
mkdir -p /mnt/data/mongodb/config/data \
mkdir -p /mnt/data/mongodb/config/log \
mkdir -p /mnt/data/mongodb/shard1/data \
mkdir -p /mnt/data/mongodb/shard1/log \
mkdir -p /mnt/data/mongodb/shard2/data \
mkdir -p /mnt/data/mongodb/shard2/log \
mkdir -p /mnt/data/mongodb/shard3/data \
mkdir -p /mnt/data/mongodb/shard3/log安装 mongodb-server
sudo apt install mongodb-server配置环境变量
vi /etc/profile
# MongoDB 环境变量内容
export MONGODB_HOME=~/opt/mongodb
export PATH=$MONGODB_HOME/bin:$PATH使立即生效
source /etc/profile2. config server配置服务器
mongodb3.4以后要求配置服务器也创建副本集，不然集群搭建不成功。
(三台机器)添加配置文件 vi /mnt/data/mongodb/conf/config.conf
## Profile content
pidfilepath = /mnt/data/mongodb/config/log/configsrv.pid
dbpath = /mnt/data/mongodb/config/data
logpath = /mnt/data/mongodb/config/log/congigsrv.log
logappend = true
bind_ip = 0.0.0.0
port = 21000
fork = true
#declare this is a config db of a cluster;
configsvr = true
#Replica set name
replSet = configs
#Set the maximum number of connections
maxConns = 20000启动三台服务器的config server
mongod -f /mnt/data/mongodb/conf/config.conf登录任意一台配置服务器，初始化配置副本集
连接 MongoDB
mongo --port 21000config 变量
config = {
_id : "configs",
members : [
{_id : 0, host : "172.31.32.31:21000" },
{_id : 1, host : "172.31.32.29:21000" },
{_id : 2, host : "172.31.32.30:21000" }
]
}初始化副本集
rs.initiate(config)其中，"_id" : "configs"应与配置文件中配置的 replicaction.replSetName 一致，"members" 中的 "host" 为三个节点的 ip 和 port
响应内容如下
> config = {
... _id : "configs",
... members : [
... {_id : 0, host : "172.31.32.31:21000" },
... {_id : 1, host : "172.31.32.29:21000" },
... {_id : 2, host : "172.31.32.30:21000" }
... ]
... }
{
"_id" : "configs",
"members" : [
{
"_id" : 0,
"host" : "172.31.32.31:21000"
},
{
"_id" : 1,
"host" : "172.31.32.29:21000"
},
{
"_id" : 2,
"host" : "172.31.32.30:21000"
}
]
}
> rs.initiate(config)
{
"ok" : 1,
"operationTime" : Timestamp(1535116186, 1),
"$gleStats" : {
"lastOpTime" : Timestamp(1535116186, 1),
"electionId" : ObjectId("000000000000000000000000")
},
"$clusterTime" : {
"clusterTime" : Timestamp(1535116186, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
configs:SECONDARY> rs.status()此时会发现终端上的输出已经有了变化。
//从单个一个
>
//变成了
configs:SECONDARY>查询状态
configs:SECONDARY> rs.status()输出如下
configs:SECONDARY> rs.status()
{
"set" : "configs",
"date" : ISODate("2018-08-24T13:10:23.181Z"),
"myState" : 1,
"term" : NumberLong(1),
"configsvr" : true,
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.31.32.31:21000",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 37,
"optime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:10:09Z"),
"optimeDurableDate" : ISODate("2018-08-24T13:10:09Z"),
"lastHeartbeat" : ISODate("2018-08-24T13:10:22.372Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:10:21.182Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.31.32.30:21000",
"configVersion" : 1
},
{
"_id" : 1,
"name" : "172.31.32.29:21000",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 37,
"optime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:10:09Z"),
"optimeDurableDate" : ISODate("2018-08-24T13:10:09Z"),
"lastHeartbeat" : ISODate("2018-08-24T13:10:22.372Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:10:22.128Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.31.32.30:21000",
"configVersion" : 1
},
{
"_id" : 2,
"name" : "172.31.32.30:21000",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 195,
"optime" : {
"ts" : Timestamp(1535116209, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:10:09Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1535116196, 1),
"electionDate" : ISODate("2018-08-24T13:09:56Z"),
"configVersion" : 1,
"self" : true
}
],
"ok" : 1,
"operationTime" : Timestamp(1535116209, 1),
"$gleStats" : {
"lastOpTime" : Timestamp(1535116186, 1),
"electionId" : ObjectId("7fffffff0000000000000001")
},
"$clusterTime" : {
"clusterTime" : Timestamp(1535116209, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
configs:PRIMARY> 3. 配置分片副本集
3.1 设置第一个分片副本集
(三台机器)设置第一个分片副本集
配置文件vi /mnt/data/mongodb/conf/shard1.conf
pidfilepath = /mnt/data/mongodb/shard1/log/shard1.pid
dbpath = /mnt/data/mongodb/shard1/data
logpath = /mnt/data/mongodb/shard1/log/shard1.log
logappend = true
bind_ip = 0.0.0.0
port = 27001
fork = true
replSet = shard1
#declare this is a shard db of a cluster;
shardsvr = true
maxConns = 20000启动三台服务器的shard1 server
mongod -f /mnt/data/mongodb/conf/shard1.conf登陆任意一台服务器，初始化副本集(除了172.31.32.30)
连接 MongoDB
mongo --port 27001使用admin数据库
use admin定义副本集配置
config = {
_id : "shard1",
members : [
{_id : 0, host : "172.31.32.31:27001" },
{_id : 1, host : "172.31.32.29:27001" },
{_id : 2, host : "172.31.32.30:27001" , arbiterOnly: true }
]
}初始化副本集配置
rs.initiate(config)响应内容如下
> use admin
switched to db admin
> config = {
... _id : "shard1",
... members : [
... {_id : 0, host : "172.31.32.31:27001" },
... {_id : 1, host : "172.31.32.29:27001" },
... {_id : 2, host : "172.31.32.30:27001" , arbiterOnly: true }
... ]
... }
{
"_id" : "shard1",
"members" : [
{
"_id" : 0,
"host" : "172.31.32.31:27001"
},
{
"_id" : 1,
"host" : "172.31.32.29:27001"
},
{
"_id" : 2,
"host" : "172.31.32.30:27001",
"arbiterOnly" : true
}
]
}
> rs.initiate(config)
{ "ok" : 1 }此时会发现终端上的输出已经有了变化。
//从单个一个
>
//变成了
shard1:SECONDARY>查询状态
shard1:SECONDARY> rs.status()响应内容如下
shard1:SECONDARY> rs.status()
{
"set" : "shard1",
"date" : ISODate("2018-08-24T13:24:09.626Z"),
"myState" : 1,
"term" : NumberLong(1),
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.31.32.31:27001",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 396,
"optime" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:23:59Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1535117038, 1),
"electionDate" : ISODate("2018-08-24T13:23:58Z"),
"configVersion" : 1,
"self" : true
},
{
"_id" : 1,
"name" : "172.31.32.29:27001",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 21,
"optime" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1535117039, 2),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:23:59Z"),
"optimeDurableDate" : ISODate("2018-08-24T13:23:59Z"),
"lastHeartbeat" : ISODate("2018-08-24T13:24:08.467Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:24:04.801Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.31.32.31:27001",
"configVersion" : 1
},
{
"_id" : 2,
"name" : "172.31.32.30:27001",
"health" : 1,
"state" : 7,
"stateStr" : "ARBITER",
"uptime" : 21,
"lastHeartbeat" : ISODate("2018-08-24T13:24:08.467Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:24:04.781Z"),
"pingMs" : NumberLong(0),
"configVersion" : 1
}
],
"ok" : 1
}3.2 设置第二个分片副本集
设置第二个分片副本集
配置文件 vi /mnt/data/mongodb/conf/shard2.conf
pidfilepath = /mnt/data/mongodb/shard2/log/shard2.pid
dbpath = /mnt/data/mongodb/shard2/data
logpath = /mnt/data/mongodb/shard2/log/shard2.log
logappend = true
bind_ip = 0.0.0.0
port = 27002
fork = true
replSet=shard2
#declare this is a shard db of a cluster;
shardsvr = true
maxConns=20000启动三台服务器的shard2 server
mongod -f /mnt/data/mongodb/conf/shard2.conf连接 MongoDB
mongo --port 27002使用admin数据库
use admin定义副本集配置
config = {
_id : "shard2",
members : [
{_id : 0, host : "172.31.32.31:27002" , arbiterOnly: true },
{_id : 1, host : "172.31.32.29:27002" },
{_id : 2, host : "172.31.32.30:27002" }
]
}初始化副本集配置
rs.initiate(config)响应内容如下
> use admin
switched to db admin
> config = {
... _id : "shard2",
... members : [
... {_id : 0, host : "172.31.32.31:27002" , arbiterOnly: true },
... {_id : 1, host : "172.31.32.29:27002" },
... {_id : 2, host : "172.31.32.30:27002" }
... ]
... }
{
"_id" : "shard2",
"members" : [
{
"_id" : 0,
"host" : "172.31.32.31:27002",
"arbiterOnly" : true
},
{
"_id" : 1,
"host" : "172.31.32.29:27002"
},
{
"_id" : 2,
"host" : "172.31.32.30:27002"
}
]
}
> rs.initiate(config)
{ "ok" : 1 }rs.status()查看状态信息返回
shard2:SECONDARY> rs.status()
{
"set" : "shard2",
"date" : ISODate("2018-08-24T13:34:17.459Z"),
"myState" : 1,
"term" : NumberLong(1),
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.31.32.31:27002",
"health" : 1,
"state" : 7,
"stateStr" : "ARBITER",
"uptime" : 39,
"lastHeartbeat" : ISODate("2018-08-24T13:34:15.701Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:34:15.286Z"),
"pingMs" : NumberLong(0),
"configVersion" : 1
},
{
"_id" : 1,
"name" : "172.31.32.29:27002",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 153,
"optime" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:34:11Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1535117629, 1),
"electionDate" : ISODate("2018-08-24T13:33:49Z"),
"configVersion" : 1,
"self" : true
},
{
"_id" : 2,
"name" : "172.31.32.30:27002",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 39,
"optime" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1535117651, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:34:11Z"),
"optimeDurableDate" : ISODate("2018-08-24T13:34:11Z"),
"lastHeartbeat" : ISODate("2018-08-24T13:34:15.701Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:34:16.331Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.31.32.29:27002",
"configVersion" : 1
}
],
"ok" : 1
}3.3 设置第三个分片副本集
设置第三个分片副本集
配置文件 vi /mnt/data/mongodb/conf/shard3.conf
pidfilepath = /mnt/data/mongodb/shard3/log/shard3.pid
dbpath = /mnt/data/mongodb/shard3/data
logpath = /mnt/data/mongodb/shard3/log/shard3.log
logappend = true
bind_ip = 0.0.0.0
port = 27003
fork = true
replSet=shard3
#declare this is a shard db of a cluster;
shardsvr = true
maxConns=20000启动三台服务器的shard3 server
mongod -f /mnt/data/mongodb/conf/shard3.conf登陆任意一台服务器，初始化副本集(除了172.31.32.31)
mongo --port 27003使用admin数据库
use admin定义副本集配置
config = {
_id : "shard3",
members : [
{_id : 0, host : "172.31.32.31:27003" },
{_id : 1, host : "172.31.32.29:27003" , arbiterOnly: true},
{_id : 2, host : "172.31.32.30:27003" }
]
}初始化副本集配置
rs.initiate(config)响应内容如下
> use admin
switched to db admin
> config = {
... _id : "shard3",
... members : [
... {_id : 0, host : "172.31.32.31:27003" },
... {_id : 1, host : "172.31.32.29:27003" , arbiterOnly: true},
... {_id : 2, host : "172.31.32.30:27003" }
... ]
... }
{
"_id" : "shard3",
"members" : [
{
"_id" : 0,
"host" : "172.31.32.31:27003"
},
{
"_id" : 1,
"host" : "172.31.32.29:27003",
"arbiterOnly" : true
},
{
"_id" : 2,
"host" : "172.31.32.30:27003"
}
]
}
> rs.initiate(config)
{ "ok" : 1 }查看状态
rs.status()返回信息如下
shard3:SECONDARY> rs.status()
{
"set" : "shard3",
"date" : ISODate("2018-08-24T13:45:19.572Z"),
"myState" : 1,
"term" : NumberLong(1),
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.31.32.31:27003",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 97,
"optime" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
},
"optimeDurable" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:45:13Z"),
"optimeDurableDate" : ISODate("2018-08-24T13:45:13Z"),
"lastHeartbeat" : ISODate("2018-08-24T13:45:18.293Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:45:18.675Z"),
"pingMs" : NumberLong(0),
"syncingTo" : "172.31.32.30:27003",
"configVersion" : 1
},
{
"_id" : 1,
"name" : "172.31.32.29:27003",
"health" : 1,
"state" : 7,
"stateStr" : "ARBITER",
"uptime" : 97,
"lastHeartbeat" : ISODate("2018-08-24T13:45:18.293Z"),
"lastHeartbeatRecv" : ISODate("2018-08-24T13:45:18.602Z"),
"pingMs" : NumberLong(0),
"configVersion" : 1
},
{
"_id" : 2,
"name" : "172.31.32.30:27003",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 126,
"optime" : {
"ts" : Timestamp(1535118313, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2018-08-24T13:45:13Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1535118232, 1),
"electionDate" : ISODate("2018-08-24T13:43:52Z"),
"configVersion" : 1,
"self" : true
}
],
"ok" : 1
}3.4 配置路由服务器 mongos
（三台机器）先启动配置服务器和分片服务器,后启动路由实例启动路由实例:
修改配置文件vi /mnt/data/mongodb/conf/mongos.conf
pidfilepath = /mnt/data/mongodb/mongos/log/mongos.pid
logpath = /mnt/data/mongodb/mongos/log/mongos.log
logappend = true
bind_ip = 0.0.0.0
port = 20000
fork = true
#The configuration server that listens can only have 1 or 3 configs to configure the replica set name of the server.
configdb = configs/172.31.32.31:21000,172.31.32.29:21000,172.31.32.30:21000
maxConns = 20000启动三台服务器的mongos server
mongos -f /mnt/data/mongodb/conf/mongos.conf4. 串联路由服务器
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。
登陆任意一台mongos
mongo --port 20000使用admin数据库
use admin串联路由服务器与分配副本集
sh.addShard("shard1/172.31.32.31:27001,172.31.32.29:27001,172.31.32.30:27001");
sh.addShard("shard2/172.31.32.31:27002,172.31.32.29:27002,172.31.32.30:27002");
sh.addShard("shard3/172.31.32.31:27003,172.31.32.29:27003,172.31.32.30:27003");查看集群状态
sh.status()响应内容如下
mongos> sh.addShard("shard1/172.31.32.31:27001,172.31.32.29:27001,172.31.32.30:27001");
{
"shardAdded" : "shard1",
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1535118917, 6),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1535118917, 6)
}
mongos> sh.addShard("shard2/172.31.32.31:27002,172.31.32.29:27002,172.31.32.30:27002");
{
"shardAdded" : "shard2",
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1535118917, 10),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1535118917, 10)
}
mongos> sh.addShard("shard3/172.31.32.31:27003,172.31.32.29:27003,172.31.32.30:27003");
{
"shardAdded" : "shard3",
"ok" : 1,
"$clusterTime" : {
"clusterTime" : Timestamp(1535118918, 5),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
},
"operationTime" : Timestamp(1535118918, 5)
}
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("5b8003a67629bf9778831c77")
}
shards:
{ "_id" : "shard1", "host" : "shard1/172.31.32.29:27001,172.31.32.31:27001", "state" : 1 }
{ "_id" : "shard2", "host" : "shard2/172.31.32.29:27002,172.31.32.30:27002", "state" : 1 }
{ "_id" : "shard3", "host" : "shard3/172.31.32.30:27003,172.31.32.31:27003", "state" : 1 }
active mongoses:
"3.6.3" : 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 }
5. 启用集合分片生效
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。
登陆任意一台mongos
mongo --port 20000使用admin数据库
use admin指定eos数据库分片生效
db.runCommand( { enablesharding :"eos"});指定数据库里需要分片的集合和片键，哈希id 分片
db.runCommand( { shardcollection : "eos.blocks",key : {"_id": "hashed"} } );6. 修改eos config.ini
三台机器其中一台，运行nodeos并同步blocks数据到mongodb
plugin = eosio::mongo_db_plugin
mongodb-uri = mongodb://localhost:20000/eos重置数据
nodeos --data-dir /mnt/data/data --hard-replay-blockchain --mongodb-wipe需要清空数据的话加下 --mongodb-wipe
然后查看任意一台mongo数据库
mongo --port 20000mongos> show databases;
admin 0.000GB
config 0.001GB
eos 0.071GB已经正确分片存储
参考：segmentfault
