30分钟完成MongoDB复制集环境搭建
环境介绍： 192.168.1.250 主 port=27408 192.168.1.250 仲裁 port=27409 192.168.1.251 备 port=27408 [root@HE4 ~]# tar xvf mongodb-linux-x86_64-2.6.10.tgz [root@HE4 ~]# mkdir -p /export/mongodb [root@HE4 ~]# mkdir -p /export/mongodb/bin [root@HE4 ~]# mkdir -p /export/mongodb/conf [root@HE4 ~]# mkdir -p /export/mongodb/log [root@HE4 ~]# mkdir -p /export/mongodb/data [root@HE4 bin]# cd /root/mongodb-linux-x86_64-2.6.10/bin [root@HE4 bin]# cp /root/mongodb-linux-x86_64-2.6.10/bin/* /export/mongodb/bin/ [root@HE1 bin]# vi /export/mongodb/conf/mongod.conf port=27408 dbpath=/export/mongodb/data logpath=/export/mongodb/log/mongod.log fork=true logappend=true keyFile=/export/mongodb/key/mongod nohttpinterface=true replSet=shard1 [root@HE1bin]#vi/export/mongodb/conf/arbiter.conf port=27409 dbpath=/export/mongodb/arbiter logpath=/export/mongodb/log/arbiter.log fork=true logappend=true keyFile=/export/mongodb/key/arbiter nohttpinterface=true replSet=shard1 keyfile文件包括: mongod，arbiter 创建一个生成keyfile的脚本 vi create_key.sh cat/dev/urandom|LC_ALL=Ctr-dc"[:alnum:]"|fold-w10|head-1>/tmp/key.txt keystring=`cat/tmp/key.txt` echo$keystring>/export/mongodb/key/mongod echo$keystring>/export/mongodb/key/arbiter chmod600/export/mongodb/key/* 启动服务器在主 [root@HE3 ~]#/export/mongodb/bin/mongod -f /export/mongodb/conf/mongod.conf [root@HE3 ~]# /export/mongodb/bin/mongod -f /export/mongodb/conf/arbiter.conf 在从 [root@HE4 ~]#/export/mongodb/bin/mongod -f /export/mongodb/conf/mongod.conf >config={_id:'shard1',members:[{_id:0,host:'192.168.1.248:27408'},{_id:1,host:'192.168.1.249:27408'},{_id:2,host:'192.168.1.248:27409',arbiterOnly:true}]} >rs.initiate(config) 初始化rs.initiate(config)，config是之前定义的名 主备库配置好后，备库查询 shard1:SECONDARY>usetest switchedtodbtest shard1:SECONDARY>db.t1.find() error:{"$err":"notmasterandslaveOk=false","code":13435} shard1:SECONDARY>rs.slaveOk() shard1:SECONDARY>db.t1.find() {"_id":ObjectId("5704c11d3e0651733bfdea23"),"x":1} rs.stauts()可以看状态，health:1代表健康，stateStr谁是我们的仲裁 想让主库降级成从库，rs.stepDown()
