Fehler beim Starten von mongoDB mit --storageEngine Optionen: "unerkannte Option"

Question

Ich habe versucht, mongod service mit "--storageEngine = rocksdb" zu starten, aber ich habe einen Fehler von "" unrecognized option ".
Ich habe versucht, alle zu sehen Option Variablen mit Hilfe Befehl ausgeführt wird und nicht sehen „--storageEngine“ Option für mongod.
Im Folgenden sind alle die Option Variable i für mongod sehen konnte.

root@ubuntu:~/MongoDb/mongo# mongod --help 
Allowed options: 

General options: 
-h [ --help ]    show this usage information 
--version     show version information 
-f [ --config ] arg   configuration file specifying additional options 
-v [ --verbose ]   be more verbose (include multiple times for more 
          verbosity e.g. -vvvvv) 
--quiet      quieter output 
--port arg     specify port number - 27017 by default 
--bind_ip arg    comma separated list of ip addresses to  listen on 
          - all local ips by default 
--maxConns arg    max number of simultaneous connections - 20000 by 
          default 
--logpath arg    log file to send write to instead of stdout - has 
          to be a file, not directory 
--logappend     append to logpath instead of over-writing 
--pidfilepath arg   full path to pidfile (if not set, no pidfile is 
          created) 
--keyFile arg    private key for cluster authentication 
--setParameter arg   Set a configurable parameter 
--nounixsocket    disable listening on unix sockets 
--unixSocketPrefix arg  alternative directory for UNIX domain sockets 
          (defaults to /tmp) 
--fork      fork server process 
--syslog     log to system's syslog facility instead of file 
          or stdout 
--auth      run with security 
--cpu      periodically show cpu and iowait utilization 
--dbpath arg    directory for datafiles - defaults to /data/db/ 
--diaglog arg    0=off 1=W 2=R 3=both 7=W+some reads 
--directoryperdb   each database will be stored in a separate 
          directory 
--ipv6      enable IPv6 support (disabled by default) 
--journal     enable journaling 
--journalCommitInterval arg how often to group/batch commit (ms) 
--journalOptions arg  journal diagnostic options 
--jsonp      allow JSONP access via http (has security 
          implications) 
--noauth     run without security 
--nohttpinterface   disable http interface 
--nojournal     disable journaling (journaling is on by default 
          for 64 bit) 
--noprealloc    disable data file preallocation - will often hurt 
          performance 
--noscripting    disable scripting engine 
--notablescan    do not allow table scans 
--nssize arg (=16)   .ns file size (in MB) for new databases 
--profile arg    0=off 1=slow, 2=all 
--quota      limits each database to a certain number of files 
          (8 default) 
--quotaFiles arg   number of files allowed per db, requires --quota 
--repair     run repair on all dbs 
--repairpath arg   root directory for repair files - defaults to 
          dbpath 
--rest      turn on simple rest api 
--shutdown     kill a running server (for init scripts) 
--slowms arg (=100)   value of slow for profile and console log 
--smallfiles    use a smaller default file size 
--syncdelay arg (=60)  seconds between disk syncs (0=never, but not 
          recommended) 
--sysinfo     print some diagnostic system information 
--upgrade     upgrade db if needed 

Replication options: 
--oplogSize arg  size to use (in MB) for replication op log. default is 
        5% of disk space (i.e. large is good) 

Master/slave options (old; use replica sets instead): 
--master    master mode 
--slave    slave mode 
--source arg   when slave: specify master as <server:port> 
--only arg   when slave: specify a single database to  replicate 
--slavedelay arg  specify delay (in seconds) to be used when applying 
        master ops to slave 
--autoresync   automatically resync if slave data is stale 

Replica set options: 
--replSet arg   arg is <setname>[/<optionalseedhostlist>] 
--replIndexPrefetch arg specify index prefetching behavior (if secondary) 
         [none|_id_only|all] 

Sharding options: 
--configsvr   declare this is a config db of a cluster; default port 
        27019; default dir /data/configdb 
--shardsvr   declare this is a shard db of a cluster; default port 
        27018 

SSL options: 
--sslOnNormalPorts    use ssl on configured ports 
--sslPEMKeyFile arg    PEM file for ssl 
--sslPEMKeyPassword arg   PEM file password 
--sslCAFile arg     Certificate Authority file for SSL 
--sslCRLFile arg    Certificate Revocation List file for SSL 
--sslWeakCertificateValidation allow client to connect without presenting a 
           certificate 
--sslFIPSMode     activate FIPS 140-2 mode at startup 

Bitte lassen Sie mich wissen, wie das verwenden, "--storageEngine" Option Variable

Answer 1

Überprüfen Sie zuerst Ihre Mongodb-Version. Mongdb unterstützt diese Option seit 3.2.
Außerdem unterstützt offizielle Version von mongodb noch nicht rocksdb.
Vielleicht mongo-rocks ist was du willst.

Answer 2

Bis jetzt unterstützt MongoDB WiredTiger und MMAPv1. siehe Link unten

https://docs.mongodb.org/manual/core/storage-engines/

Wenn Sie RockDB Speicher-Engine verwenden möchten, müssen Sie RockDB Libs installieren, zu installieren oder mit MongoDB zu Integrieren untenstehenden Link folgen

https://github.com/mongodb-partners/mongo-rocks

Answer 3

Es war mongoDB Version Problem .