database►Mongo►mongo replication standard install

mongo replication standard install

mongo replication standard install

  1. 创建用户

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    [root@mongodb app]# useradd -s /sbin/nologin mongo

  2. 解压和安装

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    [root@mongodb app]# tar xzf mongodb-linux-x86_64-rhel70-3.4.10.tgz
    [root@mongodb app]# mv mongodb-linux-x86_64-rhel70-3.4.10 /mnt/app/mongo
    [root@mongodb app]# chown -R mongo.mongo /mnt/app/mongo

  3. 设置环境变量

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    [root@mongodb app]# cat >/etc/profile.d/mongo.sh <<EOF
    export MONGO_HOME=/mnt/app/mongo
    export PATH=\${MONGO_HOME}/bin:\$PATH
    EOF
    [root@mongodb app]# source /etc/profile

  4. 创建mongo配置文件目录

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    [root@mongodb app]# mkdir -p /mnt/app/mongo/conf
    [root@mongodb app]# chown -R mongo.mongo /mnt/app/mongo/conf

  5. 创建mongo数据文件目录

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    [root@mongodb app]# mkdir -p /mnt/data/mongo/{27017,27018,27019}
    [root@mongodb app]# chown -R mongo.mongo /mnt/data/mongo

  6. 创建mongo日志目录

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    [root@mongodb app]# mkdir -p /mnt/log/mongo/{27017,27018,27019}
    [root@mongodb app]# chown -R mongo.mongo /mnt/log/mongo

  7. 设置mongo配置文件

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    [root@mongodb app]# cat > /mnt/app/mongo/conf/mongo.27017.conf <<EOF
    dbpath=/mnt/data/mongo/27017
    logpath=/mnt/log/mongo/27017/mongo.log  
    logappend=true  
    port=27017  
    fork=true  
    nohttpinterface=true  
    #auth=true  

    journal=true
    oplogSize=2048
    smallfiles=true
    replSet=dbset
    EOF

    [root@mongodb app]# cat > /mnt/app/mongo/conf/mongo.27018.conf <<EOF
    dbpath=/mnt/data/mongo/27018
    logpath=/mnt/log/mongo/27018/mongo.log  
    logappend=true  
    port=27018  
    fork=true  
    nohttpinterface=true  
    #auth=true  

    journal=true
    oplogSize=2048
    smallfiles=true
    replSet=dbset
    EOF

    [root@mongodb app]# cat > /mnt/app/mongo/conf/mongo.27019.conf <<EOF
    dbpath=/mnt/data/mongo/27019
    logpath=/mnt/log/mongo/27019/mongo.log  
    logappend=true  
    port=27019  
    fork=true  
    nohttpinterface=true  
    #auth=true  

    nojournal=true
    oplogSize=2048
    smallfiles=true
    replSet=dbset
    EOF
    [root@mongodb app]# chown -R mongo.mongo /mnt/app/mongo/conf

  8. 设置mongo systemd文件

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    [root@mongodb app]# cat > /usr/lib/systemd/system/mongo-27017.service <<EOF
    [Unit]
    Description=mongodb
    After=network.target remote-fs.target nss-lookup.target

    [Service]
    Type=forking
    ExecStart=/mnt/app/mongo/bin/mongod --config /mnt/app/mongo/conf/mongo.27017.conf
    ExecReload=/bin/kill -s HUP \$MAINPID
    ExecStop=/mnt/app/mongo/bin/mongod --shutdown --config /mnt/app/mongo/conf/mongo.27017.conf
    PrivateTmp=true
    User=mongo
    Group=mongo

    [Install]
    WantedBy=multi-user.target
    EOF

    [root@mongodb app]# cat > /usr/lib/systemd/system/mongo-27018.service <<EOF
    [Unit]
    Description=mongodb
    After=network.target remote-fs.target nss-lookup.target

    [Service]
    Type=forking
    ExecStart=/mnt/app/mongo/bin/mongod --config /mnt/app/mongo/conf/mongo.27018.conf
    ExecReload=/bin/kill -s HUP \$MAINPID
    ExecStop=/mnt/app/mongo/bin/mongod --shutdown --config /mnt/app/mongo/conf/mongo.27018.conf
    PrivateTmp=true
    User=mongo
    Group=mongo

    [Install]
    WantedBy=multi-user.target
    EOF

    [root@mongodb app]# cat > /usr/lib/systemd/system/mongo-27019.service <<EOF
    [Unit]
    Description=mongodb
    After=network.target remote-fs.target nss-lookup.target

    [Service]
    Type=forking
    ExecStart=/mnt/app/mongo/bin/mongod --config /mnt/app/mongo/conf/mongo.27019.conf
    ExecReload=/bin/kill -s HUP \$MAINPID
    ExecStop=/mnt/app/mongo/bin/mongod --shutdown --config /mnt/app/mongo/conf/mongo.27019.conf
    PrivateTmp=true
    User=mongo
    Group=mongo

    [Install]
    WantedBy=multi-user.target
    EOF

    [root@mongodb app]# systemctl daemon-reload

  9. 启动mongo

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    [root@mongodb app]# systemctl start mongo-27017
    [root@mongodb app]# systemctl start mongo-27018
    [root@mongodb app]# systemctl start mongo-27019
    [root@mongodb app]# systemctl enable monog-27017
    [root@mongodb app]# systemctl enable monog-27018
    [root@mongodb app]# systemctl enable monog-27019

  10. 副本集初始化

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    [root@mongodb ~]# mongo --port 27017
    > rs.initiate({_id: "dbset",version: 1,members: [{ _id: 0, host : "192.168.13.218:27017" }]})
    dbset:SECONDARY>
    dbset:PRIMARY> rs.add("192.168.13.218:27018")
    dbset:PRIMARY> rs.addArb("192.168.13.218:27019")
    dbset:PRIMARY> rs.status()

  11. 副本集状态

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    dbset:PRIMARY> rs.status()
    {
            "set" : "dbset",
            "date" : ISODate("2017-11-13T09:12:44.740Z"),
            "myState" : 1,
            "term" : NumberLong(1),
            "heartbeatIntervalMillis" : NumberLong(2000),
            "optimes" : {
                    "lastCommittedOpTime" : {
                            "ts" : Timestamp(1510564357, 1),
                            "t" : NumberLong(1)
                    },
                    "appliedOpTime" : {
                            "ts" : Timestamp(1510564357, 1),
                            "t" : NumberLong(1)
                    },
                    "durableOpTime" : {
                            "ts" : Timestamp(1510564357, 1),
                            "t" : NumberLong(1)
                    }
            },
            "members" : [
                    {
                            "_id" : 0,
                            "name" : "192.168.13.218:27017",
                            "health" : 1,
                            "state" : 1,
                            "stateStr" : "PRIMARY",
                            "uptime" : 641,
                            "optime" : {
                                    "ts" : Timestamp(1510564357, 1),
                                    "t" : NumberLong(1)
                            },
                            "optimeDate" : ISODate("2017-11-13T09:12:37Z"),
                            "electionTime" : Timestamp(1510564115, 2),
                            "electionDate" : ISODate("2017-11-13T09:08:35Z"),
                            "configVersion" : 3,
                            "self" : true
                    },
                    {
                            "_id" : 1,
                            "name" : "192.168.13.218:27018",
                            "health" : 1,
                            "state" : 2,
                            "stateStr" : "SECONDARY",
                            "uptime" : 122,
                            "optime" : {
                                    "ts" : Timestamp(1510564357, 1),
                                    "t" : NumberLong(1)
                            },
                            "optimeDurable" : {
                                    "ts" : Timestamp(1510564357, 1),
                                    "t" : NumberLong(1)
                            },
                            "optimeDate" : ISODate("2017-11-13T09:12:37Z"),
                            "optimeDurableDate" : ISODate("2017-11-13T09:12:37Z"),
                            "lastHeartbeat" : ISODate("2017-11-13T09:12:43.815Z"),
                            "lastHeartbeatRecv" : ISODate("2017-11-13T09:12:43.814Z"),
                            "pingMs" : NumberLong(0),
                            "syncingTo" : "192.168.13.218:27017",
                            "configVersion" : 3
                    },
                    {
                            "_id" : 2,
                            "name" : "192.168.13.218:27019",
                            "health" : 1,
                            "state" : 7,
                            "stateStr" : "ARBITER",
                            "uptime" : 58,
                            "lastHeartbeat" : ISODate("2017-11-13T09:12:43.814Z"),
                            "lastHeartbeatRecv" : ISODate("2017-11-13T09:12:40.893Z"),
                            "pingMs" : NumberLong(0),
                            "configVersion" : 3
                    }
            ],
            "ok" : 1
    }

  12. 副本集常用命令

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    //primary secondary切换
    dbset:PRIMARY> rs.stepDown()

    //副本集中移除
    dbset:PRIMARY> rs.remove("192.168.13.218:27019")

    //副本集配置
    dbset:PRIMARY> rs.conf()

  13. mongo内核优化

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    [root@mongodb ~]# echo never |tee /sys/kernel/mm/transparent_hugepage/enabled
    [root@mongodb ~]# echo never |tee /sys/kernel/mm/transparent_hugepage/defrag
    [root@mongodb ~]# systemctl stop mongo && systemctl start mongo

    [root@mongodb ~]# cat >>/etc/rc.local <<EOF

    ### mongodb close hugepage
    if test -f /sys/kernel/mm/transparent_hugepage/enabled;then
       echo never |tee /sys/kernel/mm/transparent_hugepage/enabled
    fi
    if test -f /sys/kernel/mm/transparent_hugepage/defrag;then
       echo never |tee /sys/kernel/mm/transparent_hugepage/defrag
    fi
    EOF