MongoDB High-availability deployment

Plan your deployment as follows:

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1. Prepare the basic Environment

download mongodb-linux-x86_64-rhel62-3.4.2.gz on the Internet to each server, unzip and put in the corresponding directory, and then in the root directory of the new data folder for the unified storage of data and configuration information.

2, build configuration cluster 243-244-245

Create a new start script in the root directory of MONGO, as follows

Bin/./mongod--dbpath data/--logpath data/mongo.log--configsvr--fork--port 20243--replSet Config

Where CONFIGSVR represents the configuration service, fork means background boot, Replset represents the cluster, config represents the cluster name

Also on other configuration services to establish a corresponding start boot file, remember to modify the port Oh.

Start-up-3 units are started

./start

Enter a machine, enter MONGO, run the following command

>config = {_id: "config", Configsvr:true, members:[{_id:0,host: ' 172.16.13.243:20243 '}, {_id:1,host: ' 172.16.13.244:20244 '}, {_id:2,host: ' 172.16.13.245:20245 '}]} {"_id": "config", "configsvr": True, "members": [{"_id": 0 , "host": "172.16.13.243:20243"},{"_id": 1, "host": "172.16.13.244:20244"},{"_id": 2, "host": "172.16.13.245:20245"}]} > rs.initiate (config) {"OK": 1}

View cluster status

Config:primary> rs.status (); {"Set"  :  "config", "date"  : isodate ("2017-04-12t09:29:51.889z"), "MyState"  : 1, " term " : numberlong (1)," Configsvr " : true," Heartbeatintervalmillis " : numberlong ( "Optimes"  : {"Lastcommittedoptime"  : {"ts"  : timestamp (1491989382, 1) , "T"  : numberlong (1)}, "Readconcernmajorityoptime"  : {"ts"  : timestamp (1491989382 ,  1), "T"  : numberlong (1)}, "Appliedoptime"  : {"ts"  : timestamp (1491989382,  1), "T"  : numberlong (1)}, "Durableoptime"  : {"ts"  : timestamp (1491989382,  1), "T"  : numberlong (1)}, "members"  : [{"_id"  : 0, "name"  :  " 172.16.13.243:20243 "," Health " : 1," state " : 1," Statestr " : " PRIMARY "," uptime "  : 621, "Optime"  : {"ts"  : timestamp (1491989382, 1), "T"  :&nbSp Numberlong (1)}, "Optimedate"  : isodate ("2017-04-12t09:29:42z"), "InfoMessage"  :  "could  Not find member to sync from "," Electiontime " : timestamp (1491989360, 1 ), "Electiondate"  : isodate ("2017-04-12t09:29:20z"), "ConfigVersion"  : 1, "self"  :  true},{"_id"  : 1, "name"  :  "172.16.13.244:20244", "Health"  : 1, "state"  :  2, "Statestr"  :  "secondary", "uptime"  : 42, "Optime"  : {"ts"  :  Timestamp (1491989382, 1), "T"  : numberlong (1)}, "Optimedurable"  : {"ts"  :  Timestamp (1491989382, 1), "T"  : numberlong (1)}, "Optimedate"  : isodate ("2017-04-12t09 : 29:42z ")," Optimedurabledate " : isodate (" 2017-04-12t09:29:42z ")," Lastheartbeat " : ISODate ( "2017-04-12t09:29:50.238z"), "Lastheartbeatrecv"  : isodate ("2017-04-12t09:29:51.467z"), "PingMs"   :  numberlong (0),"Syncingto"  :  "172.16.13.243:20243", "ConfigVersion"  : 1},{"_id"  : 2, "name"   :  "172.16.13.245:20245", "Health"  : 1, "state"  : 2, "Statestr"  :  "secondary", " Uptime " : 42," Optime " : {" ts " : timestamp (1491989382, 1)," T " :  Numberlong (1)}, "Optimedurable"  : {"ts"  : timestamp (1491989382, 1), "T"  :  Numberlong (1)}, "Optimedate"  : isodate ("2017-04-12t09:29:42z"), "Optimedurabledate"  :  Isodate ("2017-04-12t09:29:42z"), "Lastheartbeat"  : isodate ("2017-04-12t09:29:50.237z"), " Lastheartbeatrecv " : isodate (" 2017-04-12t09:29:51.537z ")," Pingms " : numberlong (0)," Syncingto " : " 172.16.13.243:20243 "," ConfigVersion " : 1}]," OK " : 1}

3. Build a shard cluster 246-247

Create a new start script in the root directory of the MONGO 246 machine, as follows

[[email protected] mongodb-32246]# cat start Bin/./mongod--dbpath data/--logpath data/mongo.log--fork--port 32246--re Plset 246--shardsvr

Replset represents the cluster, SHARDSVR represents the Shard, 246 represents the name of the cluster, and in the other MONGO directory of 246, the corresponding start script is established, remember to modify the port and start the script.

Run the following command

Config = {... _id: ' 246 ',... members:[... {_id:0,host: ' 172.16.13.246:30246 '},... {_id:1,host: ' 172.16.13.246:31246 '},... {_id:2,host: ' 172.16.13.246:32246 '} ...] ... }  {"_id": "246", "members": [{"_id": 0, "host": "172.16.13.246:30246"},{"_id": 1, "host": "172.16.13.246:31246"},{"_id": 2, "host": "172.16.13.246:32246"}]}> rs.initiate (config) {"OK": 1}

View cluster status

This is not listed here, the same operation is performed on 247, remember to modify the cluster name

4, Build MONGOs

Create a start script in the MONGOs root directory of 241

[email protected] mongodb-3.4.2]# cat start Bin/./mongos--logpath data/mongo.log--fork--configdb config/172.16.13.24 3:20243,172.16.13.244:20244,172.16.13.245:20245

Enter MONGOs's command interface,

Adding shards

Mongos> Sh.addshard ("246/172.16.13.246:30246,172.16.13.246:31246,172.16.13.246:32246") {"shardAdded": "246", " OK ": 1}mongos> sh.addshard (" 247/172.16.13.247:30247,172.16.13.247:31247,172.16.13.247:32247 ") {" shardAdded ":" 247 "," OK ": 1}

The above command is also run on 242.

Set the Test.aj table to allocate data according to the _ID field in hash format

Mongos> sh.enablesharding ("test") {"OK": 1}mongos> sh.shardcollection ("Test.aj", {_id: ' hashed '}) {" Collectionsharded ":" Test.aj "," OK ": 1}

5. Inserting data

for (var id = 1; ID <= 10000; id++) Db.aj.save ({"_class": "Java.util.HashMap", "CAh": "123", "CCBRXM": "Wangchy" , "valid": 0, "FYDM": "2400", "CAJMC": "Ptest", "CCBR": "Ptest", "Wcreatetime": Isodate ("2015-10-13t18:29:06.649 Z ")});

6. Verification Results

246 Master Node Validation data volume

246:primary> Db.aj.count (); 5082

246 child nodes Verify the amount of data

246:secondary> use testswitched to DB test246:secondary> Db.getmongo (). Setslaveok ();246:secondary> Db.aj.count (); 5082

247 Repeat the above operation

247:primary> db.aj.count ();4918247:secondary> use test;switched to DB test247:secondary> Db.getmongo (). Setslaveok ();247:secondary> db.aj.count (); 4918

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MongoDB High-availability deployment