1、关闭一直处于RECOVERING状态的mongodb server
/opt/mongodb/mongodb-linux-x86_64-2.4.8/bin/mongo 127.0.0.1:22001
use admin
db.shutdownServer()
2、将原数据目录改名，新建数据目录，再启动mongodb实例
mv /opt/mongodb/shard1/data /opt/mongodb/shard1/data_bak
mkdir /opt/mongodb/shard1/data
/opt/mongodb/mongodb-linux-x86_64-2.4.8/bin/mongod --shardsvr --replSet shard1 --port 22001 --dbpath /opt/mongodb/shard1/data --logpath /opt/mongodb/shard1/log/shard1.log --fork
3、查看恢复状态，为STARTUP2
/opt/mongodb/mongodb-linux-x86_64-2.4.8/bin/mongo 127.0.0.1:22001
use admin
rs.status()