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小編給大家分享一下linux下mongodb集群搭建過程的示例分析，相信大部分人都還不怎么了解，因此分享這篇文章給大家參考一下，希望大家閱讀完這篇文章后大有收獲，下面讓我們一起去了解一下吧！
mongodb的集群結構如上圖
網上有個mongo3.0的集群例子：
http://www.neiyidaogou.com/article/191388.htm
router提供入口,mongo客戶端通過router連入集群(本例只配置一個route集群)
Config Servers輔助記錄數據分片(一個集群)
Shard為數據分片集群(本例中配置兩個,用于驗證分片),
本例中，為每個集群(shard config)三個mongo實例
config與shard為同一個類型的進程mongod
route則為mongos進程
下載mongo二進制壓縮包
https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-5.0.6.tgz
解壓可以看到
用openssl生成一個key,用于mongo集群內部數據通迅
openssl rand -base64 123 > keyfile
mongod配置為件(config與shard通用)
mongo_node.conf:
storage: engine: wiredTiger directoryPerDB: true journal: enabled: true systemLog: destination: file logAppend: true operationProfiling: slowOpThresholdMs: 10000 replication: oplogSizeMB: 10240 processManagement: fork: true security: authorization: "disabled"
mongos的配置文件(即圖中的route)
mongos.conf:
systemLog: destination: file logAppend: true processManagement: fork: true
啟動config集群(3個mongod進程)
WORK_DIR=/home/???/go/mongodb/mongo_test KEYFILE=$WORK_DIR/key/keyfile cat $KEYFILE CONFFILE=$WORK_DIR/conf/mongo_node.conf cat $CONFFILE MONGOD=mongod echo $MONGOD $MONGOD --port 26001 --bind_ip_all --configsvr --replSet configReplSet --keyFile $KEYFILE --dbpath $WORK_DIR/config_cluster/conf_n1/data --pidfilepath $WORK_DIR/config_cluster/conf_n1/db.pid --logpath $WORK_DIR/config_cluster/conf_n1/db.log --config $CONFFILE $MONGOD --port 26002 --bind_ip_all --configsvr --replSet configReplSet --keyFile $KEYFILE --dbpath $WORK_DIR/config_cluster/conf_n2/data --pidfilepath $WORK_DIR/config_cluster/conf_n2/db.pid --logpath $WORK_DIR/config_cluster/conf_n2/db.log --config $CONFFILE $MONGOD --port 26003 --bind_ip_all --configsvr --replSet configReplSet --keyFile $KEYFILE --dbpath $WORK_DIR/config_cluster/conf_n3/data --pidfilepath $WORK_DIR/config_cluster/conf_n3/db.pid --logpath $WORK_DIR/config_cluster/conf_n3/db.log --config $CONFFILE
啟動成功后
用命令mongo --port 26001 --host 127.0.0.1
如下圖,進入mongo的shell
在shell中輸入如下js代碼 設置config集群
cfg={
_id:"configReplSet",
configsvr: true,
members:[
{_id:0, host:'127.0.0.1:26001'},
{_id:1, host:'127.0.0.1:26002'},
{_id:2, host:'127.0.0.1:26003'}
]};
rs.initiate(cfg);三個config mongo進程會自動選出一個primary,過一會再進入shell就會發現 shell提示變成primary
順便給config添加一個admin用戶,(一個集群只要在primary進程添加一次,會自動同步給secondary)
use admin
db.createUser({
user:'admin',pwd:'123456',
roles:[
{role:'clusterAdmin',db:'admin'},
{role:'userAdminAnyDatabase',db:'admin'},
{role:'dbAdminAnyDatabase',db:'admin'},
{role:'readWriteAnyDatabase',db:'admin'}
]})同樣之后shard也做同樣的添加用戶操作,便于后繼觀察數據
啟動shard
WORK_DIR=/home/???/go/mongodb/mongo_test KEYFILE=$WORK_DIR/key/keyfile cat $KEYFILE CONFFILE=$WORK_DIR/conf/mongo_node.conf cat $CONFFILE MONGOD=mongod echo $MONGOD echo "start shard1 replicaset" $MONGOD --port 27001 --bind_ip_all --shardsvr --replSet shard1 --keyFile $KEYFILE --dbpath $WORK_DIR/shard1/sh2_n1/data --pidfilepath $WORK_DIR/shard1/sh2_n1/db.pid --logpath $WORK_DIR/shard1/sh2_n1/db.log --config $CONFFILE $MONGOD --port 27002 --bind_ip_all --shardsvr --replSet shard1 --keyFile $KEYFILE --dbpath $WORK_DIR/shard1/sh2_n2/data --pidfilepath $WORK_DIR/shard1/sh2_n2/db.pid --logpath $WORK_DIR/shard1/sh2_n2/db.log --config $CONFFILE $MONGOD --port 27003 --bind_ip_all --shardsvr --replSet shard1 --keyFile $KEYFILE --dbpath $WORK_DIR/shard1/sh2_n3/data --pidfilepath $WORK_DIR/shard1/sh2_n3/db.pid --logpath $WORK_DIR/shard1/sh2_n3/db.log --config $CONFFILE
用mongo --port 27001 --host 127.0.0.1進入mongo shell
cfg={
_id:"shard1",
members:[
{_id:0, host:'127.0.0.1:27001'},
{_id:1, host:'127.0.0.1:27002'},
{_id:2, host:'127.0.0.1:27003'}
]};
rs.initiate(cfg);同樣用之前的添加用戶的js
并用同樣的方法啟動shard2集群,用于實驗數據分片
對應的目錄與分片名改成shard2
啟動route
WORK_DIR=/home/???/go/mongodb/mongo_test KEYFILE=$WORK_DIR/key/keyfile cat $KEYFILE CONFFILE=$WORK_DIR/conf/mongos.conf cat $CONFFILE MONGOS=mongos echo $MONGOS echo "start mongos route instances" $MONGOS --port=25001 --bind_ip_all --configdb configReplSet/127.0.0.1:26001,127.0.0.1:26002,127.0.0.1:26003 --keyFile $KEYFILE --pidfilepath $WORK_DIR/route/r_n1/db.pid --logpath $WORK_DIR/route/r_n1/db.log --config $CONFFILE $MONGOS --port 25002 --bind_ip_all --configdb configReplSet/127.0.0.1:26001,127.0.0.1:26002,127.0.0.1:26003 --keyFile $KEYFILE --pidfilepath $WORK_DIR/route/r_n2/db.pid --logpath $WORK_DIR/route/r_n2/db.log --config $CONFFILE $MONGOS --port 25003 --bind_ip_all --configdb configReplSet/127.0.0.1:26001,127.0.0.1:26002,127.0.0.1:26003 --keyFile $KEYFILE --pidfilepath $WORK_DIR/route/r_n3/db.pid --logpath $WORK_DIR/route/r_n3/db.log --config $CONFFILE
路由添加分片
用mongo --port 25001 --host 127.0.0.1 -u admin -p 123456進入shell
或者這樣也可 mongo mongodb://admin:123456@127.0.0.1:25001
在mongo shell分別執行以下兩行js
sh.addShard("shard1/127.0.0.1:27001")
sh.addShard("shard2/127.0.0.1:27011")創建一個mongo database與collection
并設置分片
use test
sh.enableSharding("test")
db.createCollection("test_shard")
sh.shardCollection("test.test_shard", {_id:"hashed"}, false, { numInitialChunks: 4} )在mongo shell用以下js添加數據，可以修改循環次數避免測試時間過長
var cnt = 0;
for(var i=0; i<1000; i++){
var dl = [];
for(var j=0; j<100; j++){
dl.push({
"bookId" : "BBK-" + i + "-" + j,
"type" : "Revision",
"version" : "IricSoneVB0001",
"title" : "Jackson's Life",
"subCount" : 10,
"location" : "China CN Shenzhen Futian District",
"author" : {
"name" : 50,
"email" : "RichardFoo@yahoo.com",
"gender" : "female"
},
"createTime" : new Date()
});
}
cnt += dl.length;
db.test_shard.insertMany(dl);
print("insert ", cnt);
}在windows下安裝mongodb，利用自帶的compass客戶端觀察兩個shard集群
會發現數據分流到兩個集群了
也可以直接連route觀察數據
補充：
把js存到文件里給shell執行會比較方便
執行js命令如下:
mongo mongodb://admin:123456@127.0.0.1:25001 ./test.js
示例js代碼:
print('=========WECOME==========');
conn = new Mongo("mongodb://admin:123456@192.168.2.129:25001");
db = conn.getDB("testjs")
sh.enableSharding("testjs")
db.createCollection("testjs_col")
sh.shardCollection("testjs.testjs_col", {_id:"hashed"}, false, { numInitialChunks: 4} )
var dl = [];
for(var j=0; j<10; j++){
dl.push({
"bookId" : "BBK-" + 0 + "-" + j,
"type" : "Revision",
"version" : "IricSoneVB0001",
"title" : "Jackson's Life",
"subCount" : 10,
"location" : "China CN Shenzhen Futian District",
"author" : {
"name" : 50,
"email" : "RichardFoo@yahoo.com",
"gender" : "female"
},
"createTime" : new Date()
});
}
db.testjs_col.insertMany(dl);
cursor = db.testjs_col.find();
printjson(cursor.toArray());以上是“linux下mongodb集群搭建過程的示例分析”這篇文章的所有內容，感謝各位的閱讀！相信大家都有了一定的了解，希望分享的內容對大家有所幫助，如果還想學習更多知識，歡迎關注億速云行業資訊頻道！
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