MongoDB YAML格式的配置文件

  根據官網的提示內容，默認的配置文件內容爲

　　

systemLog:
   verbosity: 0
   quiet: false
#  traceAllExceptions: <boolean>
   syslogFacility: user
   path: "/data/mongodb/log"
   logAppend: false
   logRotate: rename
   destination: file
   timeStampFormat: iso8601-local
   component:
      accessControl:
         verbosity: 0
      command:
         verbosity: 0
      # COMMENT some component verbosity settings omitted for brevity
      storage:
         verbosity: 0
         journal:
            verbosity: 0
      write:
         verbosity: 0
processManagement:
   fork: false
   pidFilePath: "/var/run/mongodb/mongod.pid"
net:
   port: 27017
   bindIp: "127.0.0.1"
   maxIncomingConnections: 65536
   wireObjectCheck: true
   ipv6: false
   unixDomainSocket:
      enabled: true
      pathPrefix: "/tmp"
      filePermissions: 0700
   http:
      enabled: true
      JSONPEnabled: false
      RESTInterfaceEnabled: false
#   ssl:
#     sslOnNormalPorts: <boolean>  # deprecated since 2.6
#      mode: disabled
#      PEMKeyFile: <string>
#      PEMKeyPassword: <string>
#      clusterFile: <string>
#      clusterPassword: <string>
#      CAFile: <string>
#      CRLFile: <string>
#      allowConnectionsWithoutCertificates: <boolean>
#      allowInvalidCertificates: <boolean>
#      allowInvalidHostnames: <boolean>
#      FIPSMode: <boolean>
#security:
#   keyFile: "/var/lib/mongo/mongodb-keyfile"
#   clusterAuthMode: keyFile
#   authorization: disabled
#   javascriptEnabled:  true
#   sasl:
#      hostName: <string>
#      serviceName: <string>
#      saslauthdSocketPath: <string>
#setParameter:
#   <parameter1>: <value1>
#   <parameter2>: <value2>
storage:
   dbPath: "/data/db"
   indexBuildRetry: true
   repairPath: "/data/db/tmp"
   journal:
      enabled: true 
   directoryPerDB: false
   syncPeriodSecs: 60
   engine: mmapv1
   mmapv1:
      preallocDataFiles: true
      nsSize: 16
      quota:
         enforced: false
         maxFilesPerDB: 8
      smallFiles: false
      journal:
         debugFlags: 1
         commitIntervalMs: 100
#   wiredTiger:
#      engineConfig:
#         cacheSizeGB: 1
#         statisticsLogDelaySecs: 0
#         journalCompressor: snappy
#         directoryForIndexes: false
#      collectionConfig:
#         blockCompressor: snappy
#      indexConfig:
#         prefixCompression: true
operationProfiling:
   slowOpThresholdMs: 100
   mode: off
#replication:
#   oplogSizeMB: 50
#   replSetName: repl_test
#   secondaryIndexPrefetch: all
#sharding:
#   clusterRole: <string>
#   archiveMovedChunks: <boolean>
#auditLog:
#   destination: file
#   format: JSON
#   path: "/data/mongodb/log"
#   filter: <string>
#snmp:
#   subagent: <boolean>
#   master: <boolean>

#mongos only
#replication:
#   localPingThresholdMs: <boolean>
#sharding:
#   autoSplit: <boolean>
#   configDB: <string>
#   chunkSize: <int>

注意：boolean值爲true或者false，首字母不能大寫

　　systemLog.path爲一個文件名，不能爲一個文件夾，若是該文件已存在，會建立一個新的帶日期的文件

　　有了這個基礎，啓動時就能夠看啓動日誌文件來查看究竟是哪裏的配置有問題不能啓動

　　processManagement.pidFilePath爲一個文件地址，不存在也沒問題

　　net.ssl最好所有註釋掉，暫時不用ssl

　　security下最好也註釋掉，不然須要配置所有安全內容，以及keyFile必定要存在。

　　storage.repairPath必定要是storage.dbPath的子目錄，且目錄須要存在。　　

　　replication是複製，副本啓動，註釋掉

　　記得註釋掉一個引擎

　　這樣就能夠啓動了