mongodb集群配置副本集

时间:2022-02-24 06:21:16
  • 测试环境

    操作系统:CentOS 7.2 最小化安装

    主服务器IP地址:192.168.197.21 mongo01

    从服务器IP地址:192.168.197.22 mongo02

    从服务器IP地址:192.168.197.23 mongo03

    关闭selinux,关闭防火墙。

    Mongodb版本:mongodb-linux-x86_64-3.4.10.tgz

  • 上传mongodb包到/software目录下,然后解压缩该包

    [root@localhost software]# tar -zxvf mongodb-linux-x86_64-3.4.10.tgz

  • 移动解压缩之后的文件至/usr/local/mongodb目录

    [root@localhost software]# mv mongodb-linux-x86_64-3.4.10 /usr/local/mongodb

  • 在mongodb下面创建data目录和logs目录,用于存放data和logs

    [root@localhost local]# mkdir -p /usr/local/mongodb/data

    [root@localhost local]# mkdir -p /usr/local/mongodb/logs

  • 增加环境变量,并使环境变量生效

    [root@localhost data]# vi /etc/profile

    export PATH=$PATH:/usr/local/mongodb/bin

    [root@localhost data]# source /etc/profile

  • 创建mongodb.conf文件并写入以下内容

    [root@localhost data]# touch /usr/local/mongodb/bin/mongodb.conf

    [root@localhost data]# vi /usr/local/mongodb/bin/mongodb.conf

  • 主服务器配置

    [root@mongo01 ~]# more /usr/local/mongodb/bin/mongodb.conf

    port=27017

    bind_ip=192.168.197.21

    dbpath=/usr/local/mongodb/data

    logpath=/usr/local/mongodb/logs/log.log

    pidfilepath=/usr/local/mongodb/mongo.pid

    fork=true

    logappend=true

    shardsvr=true

    directoryperdb=true

    #auth=true

    #keyFile=/usr/local/mongodb/keyfile

    replSet=hqmongodb

  • 从服务器配置

    [root@mongo02 ~]# more /usr/local/mongodb/bin/mongodb.conf

    port=27017

    bind_ip=192.168.197.22

    dbpath=/usr/local/mongodb/data

    logpath=/usr/local/mongodb/logs/log.log

    pidfilepath=/usr/local/mongodb/mongo.pid

    fork=true

    logappend=true

    shardsvr=true

    directoryperdb=true

    #auth=true #暂时注释掉这里,后期开启验证时再取消注释

    #keyFile=/usr/local/mongodb/keyfile #暂时注释掉这里,后期开启验证时再取消注释

    replSet=hqmongodb

    [root@mongo03 ~]# more /usr/local/mongodb/bin/mongodb.conf

    port=27017

    bind_ip=192.168.197.23

    dbpath=/usr/local/mongodb/data

    logpath=/usr/local/mongodb/logs/log.log

    pidfilepath=/usr/local/mongodb/mongo.pid

    fork=true

    logappend=true

    shardsvr=true

    directoryperdb=true

    #auth=true #暂时注释掉这里,后期开启验证时再取消注释

    #keyFile=/usr/local/mongodb/keyfile #暂时注释掉这里,后期开启验证时再取消注释

    replSet=hqmongodb

  • 使用配置文件启动三台服务器上的数据库

    mongod --config /usr/local/mongodb/bin/mongodb.conf

  • 登陆主节点初始化副本集

    [root@mongo01 software]# mongo 192.168.197.21:27017

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.21:27017

    MongoDB server version: 3.4.10

    Welcome to the MongoDB shell.

    For interactive help, type "help".

    For more comprehensive documentation, see

    http://docs.mongodb.org/

    Questions? Try the support group

    http://groups.google.com/group/mongodb-user

    Server has startup warnings:

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten]

    > rs.initiate() #初始化副本集

    {

    "info2" : "no configuration specified. Using a default configuration for the set",

    "me" : "192.168.197.21:27017",

    "ok" : 1

    }

    hqmongodb:OTHER> rs.conf() #查看集群状态

    {

    "_id" : "hqmongodb",

    "version" : 1,

    "protocolVersion" : NumberLong(1),

    "members" : [

    {

    "_id" : 0,

    "host" : "192.168.197.21:27017",

    "arbiterOnly" : false,

    "buildIndexes" : true,

    "hidden" : false,

    "priority" : 1,

    "tags" : {

    },

    "slaveDelay" : NumberLong(0),

    "votes" : 1

    }

    ],

    "settings" : {

    "chainingAllowed" : true,

    "heartbeatIntervalMillis" : 2000,

    "heartbeatTimeoutSecs" : 10,

    "electionTimeoutMillis" : 10000,

    "catchUpTimeoutMillis" : 60000,

    "getLastErrorModes" : {

    },

    "getLastErrorDefaults" : {

    "w" : 1,

    "wtimeout" : 0

    },

    "replicaSetId" : ObjectId("5c627f1190e39641c3d0e91f")

    }

    }

    hqmongodb:PRIMARY> rs.add("192.168.197.22:27017") #添加节点到集群中

    { "ok" : 1 }

    hqmongodb:PRIMARY> rs.add("192.168.197.23:27017") #添加节点到集群中

    { "ok" : 1 }

    hqmongodb:PRIMARY> cfg = rs.conf() #查看集群中各节点的信息

    {

    "_id" : "hqmongodb",

    "version" : 3,

    "protocolVersion" : NumberLong(1),

    "members" : [

    {

    "_id" : 0,

    "host" : "192.168.197.21:27017",

    "arbiterOnly" : false,

    "buildIndexes" : true,

    "hidden" : false,

    时不会被选为主节点,越大越容易被选为主节点

    "tags" : {

    },

    "slaveDelay" : NumberLong(0),

    "votes" : 1

    },

    {

    "_id" : 1,

    "host" : "192.168.197.22:27017",

    "arbiterOnly" : false,

    "buildIndexes" : true,

    "hidden" : false,

    "priority" : 1,

    "tags" : {

    },

    "slaveDelay" : NumberLong(0),

    "votes" : 1

    },

    {

    "_id" : 2,

    "host" : "192.168.197.23:27017",

    "arbiterOnly" : false,

    "buildIndexes" : true,

    "hidden" : false,

    "priority" : 1,

    "tags" : {

    },

    "slaveDelay" : NumberLong(0),

    "votes" : 1

    }

    ],

    "settings" : {

    "chainingAllowed" : true,

    "heartbeatIntervalMillis" : 2000,

    "heartbeatTimeoutSecs" : 10,

    "electionTimeoutMillis" : 10000,

    "catchUpTimeoutMillis" : 60000,

    "getLastErrorModes" : {

    },

    "getLastErrorDefaults" : {

    "w" : 1,

    "wtimeout" : 0

    },

    "replicaSetId" : ObjectId("5c627f1190e39641c3d0e91f")

    }

    }

    hqmongodb:PRIMARY> rs.reconfig(cfg) #使配置生效

    { "ok" : 1 }

  • 登陆两台从节点操作

    [root@mongo02 software]# mongo 192.168.197.22:27017

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.22:27017

    MongoDB server version: 3.4.10

    Welcome to the MongoDB shell.

    For interactive help, type "help".

    For more comprehensive documentation, see

    http://docs.mongodb.org/

    Questions? Try the support group

    http://groups.google.com/group/mongodb-user

    Server has startup warnings:

    2019-02-12T03:06:00.986-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:00.986-0500 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.

    2019-02-12T03:06:00.986-0500 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.

    2019-02-12T03:06:00.986-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T03:06:00.986-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:06:00.987-0500 I CONTROL [initandlisten]

    hqmongodb:SECONDARY> db.getMongo().setSlaveOk() #设置从节点为只读.注意从节点的前缀现在是SECONDARY。看清楚才设置,执行这个,否则后续从节点同步数据时会报错:"errmsg" : "not master and slaveOk=false"

    [root@mongo03 software]# mongo 192.168.197.23:27017

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.23:27017

    MongoDB server version: 3.4.10

    Welcome to the MongoDB shell.

    For interactive help, type "help".

    For more comprehensive documentation, see

    http://docs.mongodb.org/

    Questions? Try the support group

    http://groups.google.com/group/mongodb-user

    Server has startup warnings:

    2019-02-12T03:06:41.579-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:41.579-0500 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.

    2019-02-12T03:06:41.579-0500 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.

    2019-02-12T03:06:41.579-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T03:06:41.579-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten]

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:06:41.580-0500 I CONTROL [initandlisten]

    hqmongodb:SECONDARY> db.getMongo().setSlaveOk() #设置从节点为只读.注意从节点的前缀现在是SECONDARY。看清楚才设置,执行这个,否则后续从节点同步数据时会报错:"errmsg" : "not master and slaveOk=false"

  • 设置管理员账号,开启登陆验证

    登陆主节点确定登陆后的前缀是PRIMARY

    [root@mongo01 software]# mongo 192.168.197.21:27017

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.21:27017

    MongoDB server version: 3.4.10

    Server has startup warnings:

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T03:04:58.259-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten]

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T03:04:58.260-0500 I CONTROL [initandlisten]

    hqmongodb:PRIMARY> show dbs

    local 0.000GB

    hqmongodb:PRIMARY> use admin #mongodb3.0版本没有admin数据库,需要手动创建admin库,然后在admin库下添加管理员账户

    switched to db admin

    hqmongodb:PRIMARY> show collections

    hqmongodb:PRIMARY> db.createUser({user:"system",pwd:"123456",roles:[{role:"root",db:"admin"}]}) #添加系统管理员用户system,同来管理用户

    Successfully added user: {

    "user" : "system",

    "roles" : [

    {

    "role" : "root",

    "db" : "admin"

    }

    ]

    }

    hqmongodb:PRIMARY> db.auth('system','123456') #添加管理员用户认证,认证之后才可以管理数据库

    hqmongodb:PRIMARY> db.createUser({user:'administrator', pwd:'123456', roles:[{ role: "userAdminAnyDatabase", db: "admin"}]}); #添加数据库管理员administator,同来管理所有数据库

    Successfully added user: {

    "user" : "administrator",

    "roles" : [

    {

    "role" : "userAdminAnyDatabase",

    "db" : "admin"

    }

    ]

    }

    hqmongodb:PRIMARY> db.auth('administrator','123456') #添加管理员用户认证

    hqmongodb:PRIMARY> db

    admin

    hqmongodb:PRIMARY> show collections

    system.users

    system.version

    hqmongodb:PRIMARY> db.system.users.find()

    { "_id" : "admin.system", "user" : "system", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "YnrIFQ9fDFp5rUUePmkfSg==", "storedKey" : "7DtAOhrPS63eJCb7eEDaLJAMoqs=", "serverKey" : "diT9vhEInnsuI/PFgJD36VNgeyQ=" } }, "roles" : [ { "role" : "root", "db" : "admin" } ] }

    { "_id" : "admin.administrator", "user" : "administrator", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "1c5T2GUBattsdn3bMs3kJw==", "storedKey" : "KjzcNnkCzJe6XKGF94gpwk6UZcQ=", "serverKey" : "J1WYtTwGZ/ZpUTl5P5ZMUHxFiuI=" } }, "roles" : [ { "role" : "userAdminAnyDatabase", "db" : "admin" } ] }

  • 为集群开启登陆验证

    [root@mongo01 software]# cd /usr/local/mongodb/

    的倍数,否则生成的字符串可能含有非法字符会导致认证失败

    [root@mongo01 mongodb]# chmod 600 /usr/local/mongodb/keyfile #更改文件权限

    [root@mongo01 mongodb]# cat /usr/local/mongodb/keyfile #查看生成的字符串,并做记录

    ROiB0DZZXbpLg4D7lOMifa2g2Jd8

    取消所有节点上配置文件中之前注释的内容,如下内容

    [root@mongo01 mongodb]# vi /usr/local/mongodb/bin/mongodb.conf

    auth=true #取消这里的注释,开启登陆验证

    keyFile=/usr/local/mongodb/keyfile #取消这里的注释,开启登陆验证

  • 将之前主节点上生成的21位字符串复制到各节点上的keyfile文件中,并更改权限

    [root@mongo02 software]# vi /usr/local/mongodb/keyfile

    [root@mongo02 software]# cat /usr/local/mongodb/keyfile

    ROiB0DZZXbpLg4D7lOMifa2g2Jd8

    [root@mongo02 software]# chmod 600 /usr/local/mongodb/keyfile

    [root@mongo03 software]# vi /usr/local/mongodb/bin/mongodb.conf

    [root@mongo03 software]# vi /usr/local/mongodb/keyfile

    [root@mongo03 software]# cat /usr/local/mongodb/keyfile

    ROiB0DZZXbpLg4D7lOMifa2g2Jd8

    [root@mongo03 software]# chmod 600 /usr/local/mongodb/keyfile

  • 设置mongodb的开机启动,首先要在系统服务目录下创建启动文件mongodb.servicer然后写入一下内容

    [root@localhost system]# cd /lib/systemd/system

    [root@localhost system]# vi mongodb.service

    [Unit]

    Description=mongodb

    After=network.target remote-fs.target nss-lookup.target

    [Service]

    Type=forking

    ExecStart=/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/bin/mongodb.conf

    ExecReload=/bin/kill -s HUP $MAINPID

    ExecStop=/usr/local/mongodb/bin/mongod --shutdown

    PrivateTmp=true

    [Install]

    WantedBy=multi-user.target

    注册到开机启动

    [root@localhost system]# systemctl enable mongodb.service

    Created symlink from /etc/systemd/system/multi-user.target.wants/mongodb.service to /usr/lib/systemd/system/mongodb.service.

  • 重启所有服务器,然后使用administrator或者system登陆,然后写入20条数据。

    [root@mongo01 ~]# mongo 192.168.197.21:27017 -u system -p 123456 --authenticationDatabase admin

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.21:27017

    MongoDB server version: 3.4.10

    Server has startup warnings:

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T04:18:16.929-0500 I CONTROL [initandlisten]

    hqmongodb:PRIMARY>

    hqmongodb:PRIMARY>

    hqmongodb:PRIMARY> rs.status() #查看集群状态

    {

    "set" : "hqmongodb",

    "date" : ISODate("2019-02-12T09:28:30.936Z"),

    "myState" : 1,

    "term" : NumberLong(34),

    "heartbeatIntervalMillis" : NumberLong(2000),

    "optimes" : {

    "lastCommittedOpTime" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "appliedOpTime" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "durableOpTime" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    }

    },

    "members" : [

    {

    "_id" : 0,

    "name" : "192.168.197.21:27017",

    "health" : 1,

    的代表该节点目前为主节点,为2代表从节点,为8代表离线

    "stateStr" : "PRIMARY",

    "uptime" : 615,

    "optime" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "optimeDate" : ISODate("2019-02-12T09:28:27Z"),

    "electionTime" : Timestamp(1549963666, 1),

    "electionDate" : ISODate("2019-02-12T09:27:46Z"),

    "configVersion" : 4,

    "self" : true

    },

    {

    "_id" : 1,

    "name" : "192.168.197.22:27017",

    "health" : 1,

    "state" : 2,

    "stateStr" : "SECONDARY",

    "uptime" : 17,

    "optime" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "optimeDurable" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "optimeDate" : ISODate("2019-02-12T09:28:27Z"),

    "optimeDurableDate" : ISODate("2019-02-12T09:28:27Z"),

    "lastHeartbeat" : ISODate("2019-02-12T09:28:29.716Z"),

    "lastHeartbeatRecv" : ISODate("2019-02-12T09:28:29.133Z"),

    "pingMs" : NumberLong(0),

    "syncingTo" : "192.168.197.23:27017",

    "configVersion" : 4

    },

    {

    "_id" : 2,

    "name" : "192.168.197.23:27017",

    "health" : 1,

    "state" : 2,

    "stateStr" : "SECONDARY",

    "uptime" : 613,

    "optime" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "optimeDurable" : {

    "ts" : Timestamp(1549963707, 1),

    "t" : NumberLong(34)

    },

    "optimeDate" : ISODate("2019-02-12T09:28:27Z"),

    "optimeDurableDate" : ISODate("2019-02-12T09:28:27Z"),

    "lastHeartbeat" : ISODate("2019-02-12T09:28:30.719Z"),

    "lastHeartbeatRecv" : ISODate("2019-02-12T09:28:29.385Z"),

    "pingMs" : NumberLong(0),

    "syncingTo" : "192.168.197.21:27017",

    "configVersion" : 4

    }

    ],

    "ok" : 1

    }

    hqmongodb:PRIMARY> function add(){var i = 0;for(;i<20;i++){db.persons.insert({"nameA":"li"+i})}} #插入数据的命令

    hqmongodb:PRIMARY> add() #插入

    hqmongodb:PRIMARY> db.persons.find() #查看插入的数据

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e5f"), "nameA" : "li0" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e60"), "nameA" : "li1" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e61"), "nameA" : "li2" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e62"), "nameA" : "li3" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e63"), "nameA" : "li4" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e64"), "nameA" : "li5" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e65"), "nameA" : "li6" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e66"), "nameA" : "li7" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e67"), "nameA" : "li8" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e68"), "nameA" : "li9" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e69"), "nameA" : "li10" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6a"), "nameA" : "li11" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6b"), "nameA" : "li12" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6c"), "nameA" : "li13" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6d"), "nameA" : "li14" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6e"), "nameA" : "li15" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6f"), "nameA" : "li16" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e70"), "nameA" : "li17" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e71"), "nameA" : "li18" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e72"), "nameA" : "li19" }

  • 登陆从节点查看同步过来的数据

    [root@mongo02 ~]# mongo 192.168.197.23:27017 -u system -p 123456 --authenticationDatabase admin

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.23:27017

    MongoDB server version: 3.4.10

    Server has startup warnings:

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    hqmongodb:SECONDARY>

    hqmongodb:SECONDARY>

    hqmongodb:SECONDARY>

    hqmongodb:SECONDARY> show dbs #这里报错,执行rs.slaveOk()命令后在执行show dbs即可

    2019-02-12T04:31:34.256-0500 E QUERY [thread1] Error: listDatabases failed:{

    "ok" : 0,

    "errmsg" : "not master and slaveOk=false",

    "code" : 13435,

    "codeName" : "NotMasterNoSlaveOk"

    } :

    _getErrorWithCode@src/mongo/shell/utils.js:25:13

    Mongo.prototype.getDBs@src/mongo/shell/mongo.js:62:1

    shellHelper.show@src/mongo/shell/utils.js:781:19

    shellHelper@src/mongo/shell/utils.js:671:15

    @(shellhelp2):1:1

    hqmongodb:SECONDARY> rs.slaveOk()

    hqmongodb:SECONDARY> show dbs

    admin 0.000GB

    local 0.000GB

    test 0.000GB

    hqmongodb:SECONDARY> db.persons.find() #查看同步过来的数据

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e62"), "nameA" : "li3" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e5f"), "nameA" : "li0" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e61"), "nameA" : "li2" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e60"), "nameA" : "li1" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e64"), "nameA" : "li5" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e63"), "nameA" : "li4" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e68"), "nameA" : "li9" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e66"), "nameA" : "li7" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e65"), "nameA" : "li6" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e67"), "nameA" : "li8" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6b"), "nameA" : "li12" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e69"), "nameA" : "li10" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6a"), "nameA" : "li11" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6c"), "nameA" : "li13" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6e"), "nameA" : "li15" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6f"), "nameA" : "li16" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e70"), "nameA" : "li17" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e71"), "nameA" : "li18" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e6d"), "nameA" : "li14" }

    { "_id" : ObjectId("5c62921369ee6b1f7b0c1e72"), "nameA" : "li19" }

  • 测试当前主节点上的网络,然后查看集群状态

    或者23任意和节点查看主节点是否已经改变

    [root@mongo02 ~]# mongo 192.168.197.23:27017 -u system -p 123456 --authenticationDatabase admin

    MongoDB shell version v3.4.10

    connecting to: 192.168.197.23:27017

    MongoDB server version: 3.4.10

    Server has startup warnings:

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten] ** We suggest setting it to 'never'

    2019-02-12T04:18:10.941-0500 I CONTROL [initandlisten]

    hqmongodb:PRIMARY> rs.status() #登陆后看到前缀是PRIMARY,即为当前登陆的是主节点

    {

    "set" : "hqmongodb",

    "date" : ISODate("2019-02-12T10:49:16.358Z"),

    "myState" : 1,

    "term" : NumberLong(35),

    "heartbeatIntervalMillis" : NumberLong(2000),

    "optimes" : {

    "lastCommittedOpTime" : {

    "ts" : Timestamp(1549968548, 1),

    "t" : NumberLong(35)

    },

    "appliedOpTime" : {

    "ts" : Timestamp(1549968548, 1),

    "t" : NumberLong(35)

    },

    "durableOpTime" : {

    "ts" : Timestamp(1549968548, 1),

    "t" : NumberLong(35)

    }

    },

    "members" : [

    {

    "_id" : 0,

    "name" : "192.168.197.21:27017",

    "health" : 0,

    ,代表此节点已经离线

    "stateStr" : "(not reachable/healthy)",

    "uptime" : 0,

    "optime" : {

    "ts" : Timestamp(0, 0),

    "t" : NumberLong(-1)

    },

    "optimeDurable" : {

    "ts" : Timestamp(0, 0),

    "t" : NumberLong(-1)

    },

    "optimeDate" : ISODate("1970-01-01T00:00:00Z"),

    "optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),

    "lastHeartbeat" : ISODate("2019-02-12T10:49:09.228Z"),

    "lastHeartbeatRecv" : ISODate("2019-02-12T10:48:45.604Z"),

    "pingMs" : NumberLong(0),

    "lastHeartbeatMessage" : "Couldn't get a connection within the time limit",

    "configVersion" : -1

    },

    {

    "_id" : 1,

    "name" : "192.168.197.22:27017",

    "health" : 1,

    "state" : 2,

    "stateStr" : "SECONDARY",

    "uptime" : 4862,

    "optime" : {

    "ts" : Timestamp(1549968548, 1),

    "t" : NumberLong(35)

    },

    "optimeDurable" : {

    "ts" : Timestamp(1549968548, 1),

    "t" : NumberLong(35)

    },

    "optimeDate" : ISODate("2019-02-12T10:49:08Z"),

    "optimeDurableDate" : ISODate("2019-02-12T10:49:08Z"),

    "lastHeartbeat" : ISODate("2019-02-12T10:49:15.981Z"),

    "lastHeartbeatRecv" : ISODate("2019-02-12T10:49:15.383Z"),

    "pingMs" : NumberLong(0),

    "syncingTo" : "192.168.197.23:27017",

    "configVersion" : 4

    },

    {

    "_id" : 2,

    "name" : "192.168.197.23:27017",

    "health" : 1,

    ,代表23即为当前的主节点

    "stateStr" : "PRIMARY",

    "uptime" : 5468,

    "optime" : {

    "ts" : Timestamp(1549968548, 1),

    "t" : NumberLong(35)

    },

    "optimeDate" : ISODate("2019-02-12T10:49:08Z"),

    "electionTime" : Timestamp(1549968535, 1),

    "electionDate" : ISODate("2019-02-12T10:48:55Z"),

    "configVersion" : 4,

    "self" : true

    }

    ],

    "ok" : 1

    }

  • 登陆命令

    [root@mongo01 software]# mongo 192.168.197.21:27017 -u system -p 123456 --authenticationDatabase admin

    [root@mongo01 software]# mongo 192.168.197.21:27017 -u administrator -p 123456 --authenticationDatabase admin