linux – 在MongoDB 3中启用WiredTiger引擎

我通过mongod.conf中的setings启用WiredTiger引擎有问题
我正在使用Centos 7,这是我的配置

#/etc/mongod.conf
storage:
    wiredTiger:
        engineConfig:
            cacheSizeGB: 2
        collectionConfig:
            blockCompressor: snappy
    dbPath: "/var/lib/mongo"
systemLog:
    destination: file
    path: "/var/log/mongodb/mongod.log"
    logAppend: true
    #timeStampformat: iso8601-utc
processManagement:
    fork: true
    pidFilePath: "/var/run/mongodb/mongod.pid"
net:
    bindIp: 10.0.1.136,127.0.0.1
    port: 27017
    wireObjectCheck : true
    unixDomainSocket: 
        enabled : true
security:
    keyFile: "/etc/mongo.rs1.key"
    authorization: "enabled"
replication:
   oplogSizeMB: 2048
   replSetName: rs1

Mongo开始但是enginge是mmapv1