MongoDB 4.0 开发环境搭建集群

2022-10-17 16:09:21

环境准备

Liunx 服务器一台

以下示例为单机版安装集群, 没有分片

MongoDB 安装

1.下载 MongoDB tgz 安装包：

可以从下载中心下载：

https://www.mongodb.com/download-center#production

Shell：

wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-amazon2-4.0.1.tgz

2.解压缩下载的压缩文件

使用下面的命令解压缩刚才下载的文件

tar -zxvf mongodb-linux-*-4.0.1.tgz

3.添加路径到环境变量

打开 /etc/profile ，然后添加下面的脚本进去：

export PATH=<mongodb-install-directory>/bin:$PATH

为你的程序安装目录，然后刷新环境变量：

source /etc/profile

集群搭建

1.为每个实例创建目录

创建文件夹：

mkdir -p /opt/mongodb/rs0-0 /opt/mongodb/rs0-1 /opt/mongodb/rs0-2

2.创建配置文件

切换到 rs0-0 目录中，创建配置文件touch mongod.conf，内容为：

#mongod.conf

systemLog:

  destination: file

  logAppend: true

  path: /opt/mongodb/rs0-0/logs/mongodb.log 

storage:

  dbPath: /opt/mongodb/rs0-0/data

  journal:

    enabled: true

processManagement:

  fork: true  # fork and run in background

  pidFilePath: /opt/mongodb/rs0-0/mongod.pid  # location of pidfile

  timeZoneInfo: /usr/share/zoneinfo

net:

  port: 27017

  bindIp: 0.0.0.0  # Listen to local interface only, comment to listen on all interfaces.

replication:

  replSetName: rs0

切换到 rs0-1 目录中，创建配置文件touch mongod.conf，内容为：

#mongod.conf

systemLog:

  destination: file

  logAppend: true

  path: /opt/mongodb/rs0-1/logs/mongodb.log 

storage:

  dbPath: /opt/mongodb/rs0-1/data

  journal:

    enabled: true

processManagement:

  fork: true  # fork and run in background

  pidFilePath: /opt/mongodb/rs0-1/mongod.pid  # location of pidfile

  timeZoneInfo: /usr/share/zoneinfo

net:

  port: 27018

  bindIp: 0.0.0.0  # Listen to local interface only, comment to listen on all interfaces.

replication:

  replSetName: rs0

切换到 rs0-2 目录中，创建配置文件touch mongod.conf，内容为：

#mongod.conf

systemLog:

  destination: file

  logAppend: true

  path: /opt/mongodb/rs0-2/logs/mongodb.log 

storage:

  dbPath: /opt/mongodb/rs0-2/data

  journal:

    enabled: true

processManagement:

  fork: true  # fork and run in background

  pidFilePath: /opt/mongodb/rs0-2/mongod.pid  # location of pidfile

  timeZoneInfo: /usr/share/zoneinfo

net:

  port: 27019

  bindIp: 0.0.0.0  # Listen to local interface only, comment to listen on all interfaces.

replication:

  replSetName: rs0

3.启动实例

实例0：

mongod --replSet rs0 --port 27017  --smallfiles --oplogSize 128

实例1：

mongod --replSet rs0 --port 27018   --smallfiles --oplogSize 128

实例2：

mongod --replSet rs0 --port 27019  --smallfiles --oplogSize 128

4.配置集群

启动起来之后，使用mongo客户端命令切换到其中一个实例上

mongo --port 27017

然后在 Mongo shell中输入：

rsconf = {

  _id: "rs0",

  members: [

    {

     _id: 0,

     host: "<hostname>:27017"

    },

    {

     _id: 1,

     host: "<hostname>:27018"

    },

    {

     _id: 2,

     host: "<hostname>:27019"

    }

   ]

}

替换为你的主机名或者ip地址，然后执行：

rs.initiate( rsconf )

输入 rs.conf() 来查看你的集群信息：

{

    "_id": "rs0",

    "version": 1,

    "protocolVersion": NumberLong(1),

    "writeConcernMajorityJournalDefault": true,

    "members": [

        {

            "_id": 0,

            "host": "<hostname>:27017",

            "arbiterOnly": false,

            "buildIndexes": true,

            "hidden": false,

            "priority": 1,

            "tags": {},

            "slaveDelay": NumberLong(0),

            "votes": 1

        },

        {

            "_id": 1,

            "host": "<hostname>:27018",

            "arbiterOnly": false,

            "buildIndexes": true,

            "hidden": false,

            "priority": 1,

            "tags": {},

            "slaveDelay": NumberLong(0),

            "votes": 1

        },

        {

            "_id": 2,

            "host": "<hostname>:27019",

            "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("5b7412b72362045708008077")

    }

}

本文地址：https://www.cnblogs.com/savorboard/p/mongodb-4-cluster-install.html

作者博客：Savorboard

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