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  • mogodb安装步骤及注意事项

    官网下载地址:http://www.mongodb.org/downloads
    tar xf mongodb-linux-x86_64-rhel62-3.4.6.tgz
    mv mongodb-linux-x86_64-rhel62-3.4.2 /usr/local/mongodb
    #vi /etc/profile
    export PATH=$PATH:/usr/local/mongodb/bin
    加载/etc/profile使定义生效
    #. /etc/profile
    查看mongodb的bin文件
    #which mongo
    /usr/local/mongodb/bin/mongo
    查看mongodb的版本号
    #mongo --version

    创建数据目录 mkdir -p /usr/local/mongodb/data


    根据提示设置ulimit和/sys/kernel参数:
    #echo never > /sys/kernel/mm/transparent_hugepage/enabled
    #echo never> /sys/kernel/mm/transparent_hugepage/defrag
    #vi /etc/security/limits.conf
    * soft nofile 65535
    * hard nofile 65535
    * soft nproc 32768
    * hard nproc 32768
    mongodb soft nofile 65535
    mongodb hard nofile 65535
    mongodb soft nproc 32768
    mongodb hard nproc 32768

    useradd -r -m -s /bin/bash mongodb

    chown mongodb.mongodb /usr/local/mongodb/data/ -R
    mkdir /usr/local/mongodb/log
    chown mongodb.mongodb /usr/local/mongodb/log

    创建配置文件
    #vi /etc/mongod.conf

    # mongod.conf
    # for documentation of all options, see:
    # http://docs.mongodb.org/manual/reference/configuration-options/
    # where to write logging data.
    systemLog:
    destination: file
    logAppend: true
    path: /usr/local/mongodb/log/mongod.log
    logRotate: rename
    # Where and how to store data.
    storage:
    dbPath: /usr/local/mongodb/data
    journal:
    enabled: true
    engine: wiredTiger
    # mmapv1:
    # wiredTiger:
    # how the process runs
    processManagement:
    fork: true # fork and run in background
    pidFilePath: /usr/local/mongodb/mongod.pid # location of pidfile
    # network interfaces
    net:
    port: 27017
    # bindIp: 10.0.18.149 # Listen to local interface only, comment to listen on all interfaces.
    http:
    enabled: false
    RESTInterfaceEnabled: false
    #setParameter:
    # enableLocalhostAuthBypass: true
    security:
    authorization: enabled
    #operationProfiling:
    #replication:
    #sharding:
    ## Enterprise-Only Options
    #auditLog:
    #snmp:

    保存退出,以上配置文件开启了authorization功能!
    启动命令:
    #su mongodb -c "/usr/local/mongodb/bin/mongod -f /etc/mongod.conf"

    主从复制

    主节点
    然后重新启动:
    #su mongodb -c "/usr/local/mongodb/bin/mongod --master -f /etc/mongod.conf"
    从节点
    #su mongodb -c "/usr/local/mongodb/bin/mongod --slave --source 192.168.153.137:27017 -f /etc/mongod.conf"


    从节点需要执行
    rs.slaveOk();
    然后可以执行show dbs;

    关闭mongodb
    use admin
    db.shutdownServer()

    复制集

    1、修改配置文件
    基本配置如下:
    systemLog:
    destination: file
    logAppend: true
    path: /usr/local/mongodb/log/mongod.log
    logRotate: rename
    storage:
    dbPath: /usr/local/mongodb/data
    journal:
    enabled: true
    engine: wiredTiger
    processManagement:
    fork: true # fork and run in background
    pidFilePath: /usr/local/mongodb/mongod.pid # location of pidfile
    net:
    port: 27017
    # bindIp: x.x.x.x # Listen to local interface only, comment to listen on all interfaces.
    http:
    enabled: false
    RESTInterfaceEnabled: false
    #security:
    # authorization: enabled
    在基本配置的基础上对三台mongodb的配置文件统一添加如下:
    replication:
    oplogSizeMB: 20
    replSetName: Myrepl
    注:oplogSizeMB指oplog大小,即复制操作日志的最大大小(以兆字节为单位
    replSetName 指副本集名称,注意格式是前面空两格,冒号后空一格。
    然后重启三台MongoDB的mongod进程!
    #killall mongod
    #su mongod -c "/usr/local/mongodb/bin/mongod -f /etc/mongod.conf" #以普通用户启动

    后面的步骤参照

    http://linuxg.blog.51cto.com/4410110/1897727


    config={_id:"Myrepl",members:[{_id:0,host:"192.168.153.135:27017"},{_id:1,host:"192.168.153.136:27017"},{_id:2,host:"192.168.153.137:27017"}]}

    rs.initiate(config)

    如果之前有数据,会报错,要先改回原来的配置,执行db.dropDatabase() 再把复制集的添加上。

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  • 原文地址:https://www.cnblogs.com/hyming011/p/8258627.html
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