1.MSC添加shard节点
mkdir -p /mongodb/38027/conf  /mongodb/38027/log  /mongodb/38027/data
mkdir -p /mongodb/38028/conf  /mongodb/38028/log  /mongodb/38028/data
mkdir -p /mongodb/38029/conf  /mongodb/38029/log  /mongodb/38029/data
cat >  /mongodb/38027/conf/mongodb.conf  <<EOF
systemLog:
  destination: file
  path: /mongodb/38027/log/mongodb.log  
  logAppend: true
storage:
  journal:
    enabled: true
  dbPath: /mongodb/38027/data
  directoryPerDB: true
  #engine: wiredTiger
  wiredTiger:
    engineConfig:
      cacheSizeGB: 1
      directoryForIndexes: true
    collectionConfig:
      blockCompressor: zlib
    indexConfig:
      prefixCompression: true
net:
  bindIp: 10.0.0.51,127.0.0.1
  port: 38027
replication:
  oplogSizeMB: 2048
  replSetName: sh3
sharding:
  clusterRole: shardsvr
processManagement:
  fork: true
EOF \cp  /mongodb/38027/conf/mongodb.conf  /mongodb/38028/conf/
\cp  /mongodb/38027/conf/mongodb.conf  /mongodb/38029/conf/ sed 's#38027#38028#g' /mongodb/38028/conf/mongodb.conf -i
sed 's#38027#38029#g' /mongodb/38029/conf/mongodb.conf -i
mongod -f /mongodb/38027/conf/mongodb.conf
mongod -f /mongodb/38028/conf/mongodb.conf
mongod -f /mongodb/38029/conf/mongodb.conf
mongo --port 38027 admin
config = {_id: 'sh3', members: [
                          {_id: 0, host: '10.0.0.51:38027'},
                          {_id: 1, host: '10.0.0.51:38028'},
                          {_id: 2, host: '10.0.0.51:38029',"arbiterOnly":true}]
           }
rs.initiate(config)   
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