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為

　　

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值為true或者false，首字母不能大寫

　　systemLog.path為一個文件名，不能為一個文件夾，如果該文件已存在，會創建一個新的帶日期的文件

　　有了這個基礎，啟動時就可以看啟動日志文件來查看到底是哪里的配置有問題不能啟動

　　processManagement.pidFilePath為一個文件地址，不存在也沒問題

　　net.ssl最好全部注釋掉，暫時不用ssl

　　security下最好也注釋掉，否則需要配置全部安全內容，以及keyFile一定要存在。

　　storage.repairPath一定要是storage.dbPath的子目錄，且目錄需要存在。　　

　　replication是復制，副本啟動，注釋掉

　　記得注釋掉一個引擎

　　這樣就可以啟動了