NodeBB Scaling makes Mongodb Dead



  • i use this configure

    but after a few days nodebb dead
    so i check service, found mongodb not running
    the mongod log last line show nodebb get lots of post

    2018-08-28T14:40:05.667+0800 I COMMAND  [conn28] command nodebb.objects command: getMore { getMore: 24796725858, collection: "objects", batchSize: 1000, lsid: { id: UUID("xxx") }, $readPreference: { mode: "secondaryPreferred" }, $db: "no
    debb" } originatingCommand: { find: "objects", filter: { _key: { $in: [ "post:63437".......... "post:98592" ] } }, projection: { _id: 0 }, returnKey: false, showRecordId: false, lsid: { id: UUID("xxx") }, $db: "nodebb" } planSummary: IXSCAN { _key: 1, value: -1 } cursorid:24796725858 keysExamined:840 docsExamined:424 cursorExhausted:1 numYields:10 nreturned:424 reslen:163097 locks:{ Global: { acquireCount: { r: 11 } }, Database: { acquireCount: { r: 11 } }, Collection: { acquireCount: { r: 11 } } } protocol:op_query 242ms
    

    the mongod config is from apt source

    i want know what makes mongodb stop, not set daemon let it restart frequently


  • Admin

    Did you check /var/log/syslog to see if it was killed because of insufficient memory?



  • @baris only get this
    Aug 28 16:39:27 hostname mongod[7590]: 2018-08-28T16:39:27.604+0800 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'

    # free -m
                  total        used        free      shared  buff/cache   available
    Mem:           1735        1296         102           3         336         231
    Swap:          1019         287         731
    
    #/etc/mongod.conf
    storage:
      dbPath: /var/lib/mongodb
      journal:
        enabled: true
    
    systemLog:
      destination: file
      logAppend: true
      path: /var/log/mongodb/mongod.log
    
    net:
      port: 27017
      bindIp: 127.0.0.1
    
    processManagement:
      timeZoneInfo: /usr/share/zoneinfo
    
    security:
      authorization: enabled
    

 

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