案例：mongodb3.6集群搭建:分片+副本集 環境準備： 操作系統：Centos7.3 節點： 10.2.13.187（node1）、10.2.13.186（node2）、10.2.13.185（node3） 角色規劃： 服務器node1： mongos config server shard server1 主節點 shard server2 仲裁節點 shard server3 副本節點 服務器node2： mongos config server shard server1 副本節點 shard server2 主節點 shard server3 仲裁節點 服務器node3: mongos config server shard server1 仲裁節點 shard server2 副本節點 shard server3 主節點 端口分配： mongos：21000 config：22000、 shard1： 27001 shard2: 27002 shard3： 27003 配置前： * 關閉firewalld防火墻 systemctl stop firewalld或者配置如下開放端口 firewall-cmd --add-port=21000/tcp --permanent firewall-cmd --add-port=21000/tcp firewall-cmd --add-port=27001/tcp --permanent firewall-cmd --add-port=27001/tcp firewall-cmd --add-port=27002/tcp --permanent firewall-cmd --add-port=27002/tcp firewall-cmd --add-port=27003/tcp --permanent firewall-cmd --add-port=27003/tcp firewall-cmd --add-port=22000/tcp --permanent firewall-cmd --add-port=22000/tcp * 關閉selinux vi /etc/selinux/config SELINUX=disabled 臨時生效 setenforce 0 * 配置時間同步 1）安裝mongodb（以node1為例，三個節點都要配置） [root@node1 ~]# cd /etc/yum.repos.d/ [root@node1 yum.repos.d]# vim mongodb-org-3.6.repo [mongodb-org-3.6] name = MongoDB Repository baseurl = https://repo.mongodb.org/yum/redhat/7Server/mongodb-org/3.6/x86_64/ gpgcheck = 0 enabled = 1 [root@node1 ~]# yum install -y mongodb-org-3.6.3 mongodb-org-server-3.6.3 mongodb-org-shell-3.6.3 mongodb-org-mongos-3.6.3 mongodb-org-tools-3.6.3 2) 路徑規劃并創建 分別在每臺機器上建立conf、mongos、config、shard1、shard2、shard3 [root@node1 ~]# mkdir -p /etc/mongod/conf.d config server數據存儲路徑 [root@node1 ~]# mkdir -p /var/lib/mongo/config/data shard server數據存儲路徑 [root@node1 ~]# mkdir -p /var/lib/mongo/shard1/data [root@node1 ~]# mkdir -p /var/lib/mongo/shard2/data [root@node1 ~]# mkdir -p /var/lib/mongo/shard3/data [root@node1 ~]# chown -R mongod.mongod /var/lib/mongo 日志文件路徑 /var/log/mongodb （注意：以上路徑需要在三個節點上都要創建） 3) 配置config server服務器（在三個節點上都要配置，由于mongodb3.4版本以后，所有配置服務器也要創建副本集） ~~~ [root@node1 ~]# cd /etc/mongod/conf.d/ [root@node1 conf.d]# ll total 0 [root@node1 conf.d]# vim config.conf systemLog: destination: file logAppend: true path: /var/log/mongodb/configsrv.log storage: dbpath: /var/log/mongo/config/data journal: enabled: true processManagement: fork: true pidFilePath: /var/run/mongodb/configsvr.pid timeZoneInfo: /usr/share/zoneinfo net: port: 22000 bindIp: 0.0.0.0 maxIncomingConnections: 30000 replication: replSetName: csReplSet sharding: clusterRole: configsvr 然后把配置文件發送到node2和node3上 [root@node1 conf.d]# scp config.conf root@10.2.13.185:/etc/mongod/conf.d/ root@10.2.13.185's password: config.conf 100% 426 308.1KB/s 00:00 [root@node1 conf.d]# scp config.conf root@10.2.13.186:/etc/mongod/conf.d/ root@10.2.13.186's password: config.conf 100% 426 308.1KB/s 00:00 ~~~ 配置mongod-configsvr啟動腳本 ~~~ [root@node1 conf.d]# cat /usr/lib/systemd/system/mongod-configsvr.service [Unit] Description=Mongodb Config Server After=network.target Documentation=https://docs.mongodb.org/manual [Service] User=mongod Group=mongod Environment="OPTIONS=-f /etc/mongod/conf.d/config.conf" ExecStart=/usr/bin/mongod $OPTIONS ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb PermissionsStartOnly=true PIDFile=/var/run/mongodb/configsvr.pid Type=forking # file size LimitFSIZE=infinity # cpu time LimitCPU=infinity # virtual memory size LimitAS=infinity # open files LimitNOFILE=64000 # processes/threads LimitNPROC=64000 # locked memory LimitMEMLOCK=infinity # total threads (user+kernel) TasksMax=infinity TasksAccounting=false # Recommended limits for for mongod as specified in # http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings [Install] WantedBy=multi-user.target ~~~ 然后通過scp把腳本拷貝到node2和node3上 ~~~ [root@node1 system]# scp mongod-configsvr.service root@10.2.13.186:/usr/lib/systemd/system The authenticity of host '10.2.13.186 (10.2.13.186)' can't be established. ECDSA key fingerprint is SHA256:M6+YJtAkiei0mHVZPMJOq4Wb2JfoDaNdhZce8qESWjw. ECDSA key fingerprint is MD5:09:e2:00:bb:f4:66:77:4f:37:6d:a6:27:96:e9:d8:54. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.2.13.186' (ECDSA) to the list of known hosts. root@10.2.13.186's password: mongod-configsvr.service 100% 910 693.4KB/s 00:00 [root@node1 system]# scp mongod-configsvr.service root@10.2.13.185:/usr/lib/systemd/system The authenticity of host '10.2.13.185 (10.2.13.185)' can't be established. ECDSA key fingerprint is SHA256:BU7bQKNkN5T4hhkpVmCmEy8hRXZeAJM0AfSONQP48KE. ECDSA key fingerprint is MD5:f2:b5:a8:40:ee:07:3a:99:ba:c1:37:cc:59:79:f3:82. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.2.13.185' (ECDSA) to the list of known hosts. root@10.2.13.185's password: mongod-configsvr.service 100% 910 557.6KB/s 00:00 ~~~ 啟動mongod-configsvr服務（三個節點都啟動） [root@node1 ~]# systemctl enable mongod-configsvr [root@node1 ~]# systemctl start mongod-configsvr [root@node1 ~]# ss -tunlp|grep 22000 tcp LISTEN 0 128 *:22000 *:* users:(("mongod",pid=18953,fd=11)) [root@node1 ~]# 登錄一臺節點，初始化配置副本集 ~~~ > config = { _id:"csReplSet",members:[ {_id:1,host:"10.2.13.187:22000"},{_id:2,host:"10.2.13.186:22000"},{_id:3,host:"10.2.13.185:22000"}] } { "_id" : "csReplSet", "members" : [ { "_id" : 1, "host" : "10.2.13.187:22000" }, { "_id" : 2, "host" : "10.2.13.186:22000" }, { "_id" : 3, "host" : "10.2.13.185:22000" } ] } > rs.initiate(config) { "ok" : 1, "operationTime" : Timestamp(1520925604, 1), "$gleStats" : { "lastOpTime" : Timestamp(1520925604, 1), "electionId" : ObjectId("000000000000000000000000") }, "$clusterTime" : { "clusterTime" : Timestamp(1520925604, 1), "signature" : { "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId" : NumberLong(0) } } } ~~~ 二）配置分片副本集 1）設置第一個分片副本集 添加配置文件 ~~~ [root@node1 conf.d]# cat shard1.conf systemLog: destination: file logAppend: true path: /var/log/mongodb/shard1.log storage: dbPath: /var/lib/mongo/shard1/data journal: enabled: true processManagement: fork: true pidFilePath: /var/run/mongodb/shard1.pid timeZoneInfo: /usr/share/zoneinfo net: port: 27001 bindIp: 10.2.13.187 replication: replSetName: shard1 sharding: clusterRole: shardsvr ~~~ 添加啟動腳本 ~~~ [root@node1 conf.d]# cat /usr/lib/systemd/system/mongod-shard1.service [Unit] Description=Mongodb Config Server After=network.target Documentation=https://docs.mongodb.org/manual [Service] User=mongod Group=mongod Environment="OPTIONS=-f /etc/mongod/conf.d/shard1.conf" ExecStart=/usr/bin/mongod $OPTIONS ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb PermissionsStartOnly=true PIDFile=/var/run/mongodb/shard1.pid Type=forking # file size LimitFSIZE=infinity # cpu time LimitCPU=infinity # virtual memory size LimitAS=infinity # open files LimitNOFILE=64000 # processes/threads LimitNPROC=64000 # locked memory LimitMEMLOCK=infinity # total threads (user+kernel) TasksMax=infinity TasksAccounting=false # Recommended limits for for mongod as specified in # http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings [Install] WantedBy=multi-user.target ~~~ 啟動服務 [root@node1 ~]# systemctl enable mongod-shard1 [root@node1 ~]# systemctl start mongod-shard1 然后把配置文件和啟動腳本拷貝到node2和node3上 登陸任意一臺非仲裁節點服務器，初始化副本集，shard1節點node3為仲裁節點 ~~~ > config={ _id:"shard1",members:[{_id:1,host:"10.2.13.187:27001",priority:2},{_id:2,host:"10.2.13.186:27001",priority:1},{_id:3,host:"10.2.13.185:27001",arbiterOnly:true}] ... } { "_id" : "shard1", "members" : [ { "_id" : 1, "host" : "10.2.13.187:27001", "priority" : 2 }, { "_id" : 2, "host" : "10.2.13.186:27001", "priority" : 1 }, { "_id" : 3, "host" : "10.2.13.185:27001", "arbiterOnly" : true } ] } > rs.initiate(config) { "ok" : 1 } shard1:SECONDARY> shard1:PRIMARY> [root@node3 tmp]# mongo 10.2.13.185:27001 MongoDB shell version v3.6.3 connecting to: mongodb://10.2.13.185:27001/test MongoDB server version: 3.6.3 Server has startup warnings: 2018-03-13T16:26:25.158+0800 I CONTROL [initandlisten] 2018-03-13T16:26:25.159+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 2018-03-13T16:26:25.159+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 2018-03-13T16:26:25.159+0800 I CONTROL [initandlisten] shard1:ARBITER> [root@node2 scripts]# mongo 10.2.13.186:27001 MongoDB shell version v3.6.3 connecting to: mongodb://10.2.13.186:27001/test MongoDB server version: 3.6.3 Server has startup warnings: 2018-03-13T16:26:10.147+0800 I CONTROL [initandlisten] 2018-03-13T16:26:10.147+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 2018-03-13T16:26:10.147+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 2018-03-13T16:26:10.147+0800 I CONTROL [initandlisten] 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2018-03-13T16:26:10.148+0800 I CONTROL [initandlisten] shard1:SECONDARY> ~~~ 2）配置第二分片副本集 配置文件 ~~~ [root@node1 conf.d]# vim shard2.conf systemLog: destination: file logAppend: true path: /var/log/mongodb/shard2.log storage: dbPath: /var/lib/mongo/shard2/data journal: enabled: true processManagement: fork: true pidFilePath: /var/run/mongodb/shard2.pid timeZoneInfo: /usr/share/zoneinfo net: port: 27002 bindIp: 10.2.13.187 replication: replSetName: shard2 sharding: clusterRole: shardsvr ~~~ 啟動腳本 ~~~ [root@node1 system]# cat mongod-shard2.service [Unit] Description=Mongodb Config Server After=network.target Documentation=https://docs.mongodb.org/manual [Service] User=mongod Group=mongod Environment="OPTIONS=-f /etc/mongod/conf.d/shard2.conf" ExecStart=/usr/bin/mongod $OPTIONS ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb PermissionsStartOnly=true PIDFile=/var/run/mongodb/shard2.pid Type=forking # file size LimitFSIZE=infinity # cpu time LimitCPU=infinity # virtual memory size LimitAS=infinity # open files LimitNOFILE=64000 # processes/threads LimitNPROC=64000 # locked memory LimitMEMLOCK=infinity # total threads (user+kernel) TasksMax=infinity TasksAccounting=false # Recommended limits for for mongod as specified in # http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings [Install] WantedBy=multi-user.target ~~~ 啟動服務器 [root@node1 ~]# systemctl enable mongod-shard2 Created symlink from /etc/systemd/system/multi-user.target.wants/mongod-shard2.service to /usr/lib/systemd/system/mongod-shard2.service. [root@node1 ~]# systemctl start mongod-shard2 然后把文件拷貝到node2和node3 ~~~ [root@node1 conf.d]# scp shard2.conf root@10.2.13.185:/etc/mongod/conf.d/ root@10.2.13.185's password: shard2.conf 100% 381 224.6KB/s 00:00 [root@node1 conf.d]# scp shard2.conf root@10.2.13.186:/etc/mongod/conf.d/ root@10.2.13.186's password: shard2.conf 100% 381 224.6KB/s 00:00 [root@node1 system]# scp mongod-shard2.service root@10.2.13.186:/usr/lib/systemd/system root@10.2.13.186's password: mongod-shard2.service 100% 905 503.5KB/s 00:00 [root@node1 system]# scp mongod-shard2.service root@10.2.13.185:/usr/lib/systemd/system root@10.2.13.185's password: mongod-shard2.service 100% 905 503.5KB/s 00:00 然后登陸到node2和node3，調整一下配置文件，如 [root@node3 tmp]# vim /etc/mongod/conf.d/shard2.conf [root@node3 tmp]# systemctl start mongod-shard2 [root@node3 tmp]# systemctl enable mongod-shard2 Created symlink from /etc/systemd/system/multi-user.target.wants/mongod-shard2.service to /usr/lib/systemd/system/mongod-shard2.service. ~~~ 登陸任意一臺非仲裁節點服務器，初始化副本集 ~~~ > config={_id:"shard2",members:[{_id:1,host:"10.2.13.187:27002",arbiterOnly:true},{_id:2,host:"10.2.13.186:27002",priority:2},{_id:3,host:"10.2.13.185:27002",priority:1}]} { "_id" : "shard2", "members" : [ { "_id" : 1, "host" : "10.2.13.187:27002", "arbiterOnly" : true }, { "_id" : 2, "host" : "10.2.13.186:27002", "priority" : 2 }, { "_id" : 3, "host" : "10.2.13.185:27002", "priority" : 1 } ] } > rs.initiate(config) { "ok" : 1 } shard2:OTHER> shard2:SECONDARY> shard2:SECONDARY> shard2:SECONDARY> shard2:SECONDARY> shard2:SECONDARY> shard2:SECONDARY> shard2:SECONDARY> shard2:SECONDARY> shard2:PRIMARY> ~~~ 3）設置第三個分片副本集 配置文件 ~~~ [root@node1 conf.d]# vim shard3.conf systemLog: destination: file logAppend: true path: /var/log/mongodb/shard3.log storage: dbPath: /var/lib/mongo/shard3/data journal: enabled: true processManagement: fork: true pidFilePath: /var/run/mongodb/shard3.pid timeZoneInfo: /usr/share/zoneinfo net: port: 27003 bindIp: 10.2.13.187 replication: replSetName: shard3 sharding: clusterRole: shardsvr 然后拷貝到node2和node3 [root@node1 conf.d]# scp shard3.conf root@10.2.13.185:/etc/mongod/conf.d/ [root@node1 conf.d]# scp shard3.conf root@10.2.13.186:/etc/mongod/conf.d/ ~~~ 啟動文件 ~~~ [root@node1 system]# cat mongod-shard3.service [Unit] Description=Mongodb Config Server After=network.target Documentation=https://docs.mongodb.org/manual [Service] User=mongod Group=mongod Environment="OPTIONS=-f /etc/mongod/conf.d/shard3.conf" ExecStart=/usr/bin/mongod $OPTIONS ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb PermissionsStartOnly=true PIDFile=/var/run/mongodb/shard3.pid Type=forking # file size LimitFSIZE=infinity # cpu time LimitCPU=infinity # virtual memory size LimitAS=infinity # open files LimitNOFILE=64000 # processes/threads LimitNPROC=64000 # locked memory LimitMEMLOCK=infinity # total threads (user+kernel) TasksMax=infinity TasksAccounting=false # Recommended limits for for mongod as specified in # http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings [Install] WantedBy=multi-user.target 拷貝到node2和node3 [root@node1 system]# scp mongod-shard3.service root@10.2.13.185:/usr/lib/systemd/system [root@node1 system]# scp mongod-shard3.service root@10.2.13.186:/usr/lib/systemd/system ~~~ 啟動服務 [root@node1 system]# systemctl start mongod-shard3.service [root@node1 system]# systemctl enable mongod-shard3.service Created symlink from /etc/systemd/system/multi-user.target.wants/mongod-shard3.service to /usr/lib/systemd/system/mongod-shard3.service. 然后修改node2和node3的配置文件，然后啟動服務 配置副本集 ~~~ > config={_id:"shard3",members:[{_id:1,host:"10.2.13.187:27003",priority:1},{_id:2,host:"10.2.13.186:27003",arbiterOnly:true},{_id:3,host:"10.2.13.185:27003",priority:2}]} { "_id" : "shard3", "members" : [ { "_id" : 1, "host" : "10.2.13.187:27003", "priority" : 1 }, { "_id" : 2, "host" : "10.2.13.186:27003", "arbiterOnly" : true }, { "_id" : 3, "host" : "10.2.13.185:27003", "priority" : 2 } ] } > rs.initiate(config) { "ok" : 1 } ~~~ 三）配置路由服務器 mongos 先啟動配置服務器和分片服務器,后啟動路由實例啟動路由實例:（三臺機器） 配置文件 ~~~ [root@node3 system]# vim /etc/mongod/conf.d/mongos.conf systemLog: destination: file logAppend: true path: /var/log/mongodb/mongos.log processManagement: fork: true pidFilePath: /var/run/mongodb/mongos.pid timeZoneInfo: /usr/share/zoneinfo net: port: 21000 bindIp: 10.2.13.185 sharding: configDB: csReplSet/10.2.13.187:22000, 10.2.13.186:22000, 10.2.13.185:22000 ~~~ 啟動腳本 ~~~ [root@node3 system]# cat mongod-mongos.service [Unit] Description=Mongodb Mongos Server After=network.target mongod-shard1.service mongod-shard2.service mongod-shard3.service Documentation=https://docs.mongodb.org/manual [Service] User=mongod Group=mongod Environment="OPTIONS=-f /etc/mongod/conf.d/mongos.conf" ExecStart=/usr/bin/mongos $OPTIONS ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb PermissionsStartOnly=true PIDFile=/var/run/mongodb/mongos.pid Type=forking # file size LimitFSIZE=infinity # cpu time LimitCPU=infinity # virtual memory size LimitAS=infinity # open files LimitNOFILE=64000 # processes/threads LimitNPROC=64000 # locked memory LimitMEMLOCK=infinity # total threads (user+kernel) TasksMax=infinity TasksAccounting=false # Recommended limits for for mongod as specified in # http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings [Install] WantedBy=multi-user.target ~~~ 啟動服務 ~~~ [root@node3 system]# systemctl start mongod-mongos.service [root@node3 system]# [root@node3 system]# [root@node3 system]# systemctl enable mongod-mongos.service Created symlink from /etc/systemd/system/multi-user.target.wants/mongod-mongos.service to /usr/lib/systemd/system/mongod-mongos.service. ~~~ 然后把配置文件和啟動腳本拷貝到node1和node2 四）啟動分片 mongo 10.2.13.187:21000 use admin mongos> sh.addShard("shard1/10.2.13.187:27001,10.2.13.186:27001,10.3.13.185:27001") mongos> sh.addShard("shard2/10.2.13.187:27002,10.2.13.186:27002,10.3.13.185:27002") mongos> sh.addShard("shard3/10.2.13.187:27003,10.2.13.186:27003,10.3.13.185:27003") 如下 mongos> sh.addShard("shard2/10.2.13.187:27003,10.2.13.186:27003,10.2.13.185:27003") { "shardAdded" : "shard2", "ok" : 1, "$clusterTime" : { "clusterTime" : Timestamp(1520933270, 3), "signature" : { "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId" : NumberLong(0) } }, "operationTime" : Timestamp(1520933270, 3) } ~~~ mongos> sh.status() --- Sharding Status --- sharding version: { "_id" : 1, "minCompatibleVersion" : 5, "currentVersion" : 6, "clusterId" : ObjectId("5aa77bb0cb090fc235bf0ba4") } shards: { "_id" : "shard1", "host" : "shard1/10.2.13.186:27001,10.2.13.187:27001", "state" : 1 } { "_id" : "shard2", "host" : "shard2/10.2.13.185:27002,10.2.13.186:27002", "state" : 1 } { "_id" : "shard3", "host" : "shard3/10.2.13.185:27003,10.2.13.187:27003", "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 } config.system.sessions shard key: { "_id" : 1 } unique: false balancing: true chunks: shard1 1 { "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 0) ~~~ 五、測試 1）sh.enableSharding(dbname) 通過以上命令測試在哪個數據庫上啟用分片 2）sh.shardCollection(fullName,key,unique,options) shards the collection 通過以上命令在哪個集合上啟用分片 ~~~ mongos> sh.enableSharding("testdb") { "ok" : 1, "$clusterTime" : { "clusterTime" : Timestamp(1520933845, 3), "signature" : { "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId" : NumberLong(0) } }, "operationTime" : Timestamp(1520933845, 3) } mongos> sh.status() --- Sharding Status --- sharding version: { "_id" : 1, "minCompatibleVersion" : 5, "currentVersion" : 6, "clusterId" : ObjectId("5aa77bb0cb090fc235bf0ba4") } shards: { "_id" : "shard1", "host" : "shard1/10.2.13.186:27001,10.2.13.187:27001", "state" : 1 } { "_id" : "shard2", "host" : "shard2/10.2.13.185:27002,10.2.13.186:27002", "state" : 1 } { "_id" : "shard3", "host" : "shard3/10.2.13.185:27003,10.2.13.187:27003", "state" : 1 } active mongoses: "3.6.3" : 3 autosplit: Currently enabled: yes balancer: Currently enabled: yes Currently running: no Failed balancer rounds in last 5 attempts: 0 Migration Results for the last 24 hours: No recent migrations databases: { "_id" : "config", "primary" : "config", "partitioned" : true } config.system.sessions shard key: { "_id" : 1 } unique: false balancing: true chunks: shard1 1 { "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 0) { "_id" : "testdb", "primary" : "shard2", "partitioned" : true } 不做分片的，都放到shard2上 mongos> sh.shardCollection("testdb.student",{"age":1}) { "collectionsharded" : "testdb.student", "collectionUUID" : UUID("24a2b55c-429d-48ad-85f8-1369b4a709d1"), "ok" : 1, "$clusterTime" : { "clusterTime" : Timestamp(1520934029, 15), "signature" : { "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId" : NumberLong(0) } }, "operationTime" : Timestamp(1520934029, 15) } ~~~ mongos> use testdb mongos> for (var i=1;i<=1000000;i++){ ... db.student.insert({"name":"stu"+i,"age":(i%120),"classes":"class"+i,"address":"jinlindonglu"}) ... } 查看分片情況 ~~~ databases: { "_id" : "config", "primary" : "config", "partitioned" : true } config.system.sessions shard key: { "_id" : 1 } unique: false balancing: true chunks: shard1 1 { "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 0) { "_id" : "testdb", "primary" : "shard2", "partitioned" : true } testdb.student shard key: { "age" : 1 } unique: false balancing: true chunks: shard1 36 shard2 49 shard3 35 too many chunks to print, use verbose if you want to force print ~~~ 啟動 mongodb的啟動順序是，先啟動配置服務器，在啟動分片，最后啟動mongos. systemctl start mongod-configsvr systemctl start mongod-shard1 systemctl start mongod-shard2 systemctl start mongod-shard3 systemctl start mongod-mongos 關閉: systemctl stop mongod-mongos systemctl stop mongod-shard3 systemctl stop mongod-shard2 systemctl stop mongod-shard1 systemctl stop mongod-configsvr