大内存页面redhat_transparent_hugepage参数设置为never
先查看该参数值
# cat /sys/kernel/mm/redhat_transparent_hugepage/enabled [always] madvise never # cat /sys/kernel/mm/redhat_transparent_hugepage/defrag [always] madvise never配置disable-transparent-hugepages服务
vi /etc/init.d/disable-transparent-hugepages #!/bin/bash ### BEGIN INIT INFO # Provides: disable-transparent-hugepages # Required-Start: $local_fs # Required-Stop: # X-Start-Before: mongod mongodb-mms-automation-agent # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: Disable Linux transparent huge pages # Description: Disable Linux transparent huge pages, to improve # database performance. ### END INIT INFO case $1 in start) if [ -d /sys/kernel/mm/transparent_hugepage ]; then thp_path=/sys/kernel/mm/transparent_hugepage elif [ -d /sys/kernel/mm/redhat_transparent_hugepage ]; then thp_path=/sys/kernel/mm/redhat_transparent_hugepage else return 0 fi echo 'never' > ${thp_path}/enabled echo 'never' > ${thp_path}/defrag re='^[0-1]+$' if [[ $(cat ${thp_path}/khugepaged/defrag) =~ $re ]] then # RHEL 7 echo 0 > ${thp_path}/khugepaged/defrag else # RHEL 6 echo 'no' > ${thp_path}/khugepaged/defrag fi unset re unset thp_path ;; esac 对该服务器授权，并设置 开机自启动 sudo chmod 755 /etc/init.d/disable-transparent-hugepages sudo chkconfig --add disable-transparent-hugepages重启服务器，并检查该参数是否已经生效
# cat /sys/kernel/mm/redhat_transparent_hugepage/enabled always madvise [never] # cat /sys/kernel/mm/redhat_transparent_hugepage/defrag always madvise [never]官方链接：
Disable Transparent Huge Pages (THP)【https://docs.mongodb.com/manual/tutorial/transparent-huge-pages/】
创建mongodb用户 # groupadd mongodb # useradd mongodb -g mongodb上传安装包，并创建相应的目录
cd /root mv mongodb-linux-x86_64-rhel62-3.2.8.tgz /home/mongodb su - mongodb tar -xvf mongodb-linux-x86_64-rhel62-3.2.8.tgz mv mongodb-linux-x86_64-rhel62-3.2.8 mongodb mkdir -p /home/mongodb/data mkdir -p /home/mongodb/data/replSet1（A服务器上） mkdir -p /home/mongodb/data/replSet2（A服务器上） mkdir -p /home/mongodb/data/replSet3（B服务器上） mkdir -p /home/mongodb/config mkdir -p /home/mongodb/logs mkdir -p /home/mongodb/keyfile配置三个节点的config文件
vi /home/mongodb/config/replSet1.conf（A服务器上）
dbpath=/home/mongodb/data/replSet1 replSet=Shard1 bind_ip=192.168.1.21,localhost port=27001 oplogSize=5000 logpath=/home/mongodb/logs/replSet1.log logappend=true fork=true # keyFile=/home/mongo/keyfile/security wiredTigerCacheSizeGB=1 vi /home/mongodb/config/replSet2.conf（A服务器上） dbpath=/home/mongodb/data/replSet2 replSet=Shard1 bind_ip=192.168.1.21,localhost port=27002 oplogSize=5000 logpath=/home/mongodb/logs/replSet2.log logappend=true fork=true # keyFile=/home/mongo/keyfile/security wiredTigerCacheSizeGB=1vi /home/mongodb/config/replSet3.conf（B服务器上）
dbpath=/home/mongodb/data/replSet3 replSet=Shard1 bind_ip=192.168.1.23,localhost port=27003 oplogSize=5000 logpath=/home/mongodb/logs/replSet3.log logappend=true fork=true # keyFile=/home/mongo/keyfile/security wiredTigerCacheSizeGB=1分别启动三个实例进程
/home/mongodb/mongodb/bin/mongod -f /home/mongodb/config/replSet1.conf /home/mongodb/mongodb/bin/mongod -f /home/mongodb/config/replSet2.conf /home/mongodb/mongodb/bin/mongod -f /home/mongodb/config/replSet3.conf通过27001端口登录其中一个节点，配置并初始化副本集。
# cp /home/mongodb/mongodb/bin/mongo /usr/sbin/ $ mongo --port 27001 MongoDB shell version: 3.2.8 connecting to: 127.0.0.1:27001/test > config={_id:'Shard1',members:[{_id:0,host:'192.168.1.21:27001'}]} { "_id" : "Shard1", "members" : [ { "_id" : 0, "host" : "192.168.1.21:27001" } ] } > rs.initiate(config) { "ok" : 1 } Shard1:SECONDARY> Shard1:PRIMARY> Shard1:PRIMARY> rs.add("192.168.1.21:27002") Shard1:PRIMARY> rs.add("192.168.1.21:27003") Shard1:PRIMARY> rs.status() { "set" : "Shard1", "date" : ISODate("2016-11-10T15:11:13.857Z"), "myState" : 1, "term" : NumberLong(1), "heartbeatIntervalMillis" : NumberLong(2000), "members" : [ { "_id" : 0, "name" : "192.168.1.21:27001", "health" : 1, "state" : 1, "stateStr" : "PRIMARY", "uptime" : 1704, "optime" : { "ts" : Timestamp(1478790664, 1), "t" : NumberLong(1) }, "optimeDate" : ISODate("2016-11-10T15:11:04Z"), "electionTime" : Timestamp(1478789349, 2), "electionDate" : ISODate("2016-11-10T14:49:09Z"), "configVersion" : 3, "self" : true }, { "_id" : 1, "name" : "192.168.1.21:27002", "health" : 1, "state" : 2, "stateStr" : "SECONDARY", "uptime" : 1238, "optime" : { "ts" : Timestamp(1478790664, 1), "t" : NumberLong(1) }, "optimeDate" : ISODate("2016-11-10T15:11:04Z"), "lastHeartbeat" : ISODate("2016-11-10T15:11:12.744Z"), "lastHeartbeatRecv" : ISODate("2016-11-10T15:11:13.744Z"), "pingMs" : NumberLong(0), "syncingTo" : "192.168.1.21:27001", "configVersion" : 3 }, { "_id" : 2, "name" : "192.168.1.23:27003", "health" : 1, "state" : 2, "stateStr" : "SECONDARY", "uptime" : 9, "optime" : { "ts" : Timestamp(1478790664, 1), "t" : NumberLong(1) }, "optimeDate" : ISODate("2016-11-10T15:11:04Z"), "lastHeartbeat" : ISODate("2016-11-10T15:11:12.744Z"), "lastHeartbeatRecv" : ISODate("2016-11-10T15:11:13.086Z"), "pingMs" : NumberLong(0), "configVersion" : 3 } ], "ok" : 1 }设置三个节点的权重
Shard1:PRIMARY> cfg = rs.conf() Shard1:PRIMARY> cfg.members[0].priority = 2 Shard1:PRIMARY> cfg.members[1].priority = 2 Shard1:PRIMARY> cfg.members[2].priority = 1 Shard1:PRIMARY> rs.reconfig(cfg) 说明：cfg.members[0].priority =括号中的数字是执行rs.conf()得出的节点顺序，第一个节点在这里写0，第二个节点写1，依次类推。 创建Keyfile，并分别复制到各节点的指定目录（创建一次，然后复制到其他节点） 在节点1上创建验证文件security于/app/mongodb/mmapv1/key目录，关赋予可读权限，命令如下 # cd /home/mongodb/keyfile # openssl rand -base64 741 > security # chmod 600 security 登录Primary节点，并创建管理员（可以自己创建其他账号及角色） Shard1:PRIMARY> use admin switched to db admin Shard1:PRIMARY> db.createUser( { user:"admin", pwd:"Password", roles:[{role:"userAdminAnyDatabase",db:"admin"}] } ) db.grantRolesToUser("admin",[{role:"clusterManager",db:"admin"}]) db.grantRolesToUser("admin",[{role:"clusterAdmin",db:"admin"}]) db.grantRolesToUser("admin",[{role:"clusterMonitor",db:"admin"}]) db.grantRolesToUser("admin",[{role:"hostManager",db:"admin"}]) db.grantRolesToUser("admin",[{role:"userAdminAnyDatabase",db:"admin"}]) db.grantRolesToUser("admin",[{role:"readWrite",db:"admin"}]) db.grantRolesToUser("admin",[{role:"backup",db:"admin"}]) db.grantRolesToUser("admin",[{role:"restore",db:"admin"}])重新修改config文件，将以下这个参数配置注释去掉，使其生效。
keyFile=/home/mongo/keyfile/security关闭所有进程，并重新启动进程。然后通过命令进行登录验证。
mongo 192.168.1.21:27001/admin -u admin -p Password数据导出导入命令
mongodump -h 192.168.1.91 --port 30000 -u admin -p Password -o /data --db db_name --authenticationDatabase admin mongorestore -h 192.168.1.21 --port 27001 -u admin -p Password --db db_name -c INBOUND_MSG --authenticationDatabase admin /data/db_name/INBOUND_MSG.bson文章到此完毕！
