MongoDB服务无法启动

我使用以下命令安装了MongoDB:

sudo apt update
sudo apt install mongodb

以及当我检查服务状态时:

mongodb.service - An object/document-oriented database
   Loaded: loaded (/lib/systemd/system/mongodb.service; enabled; vendor preset: enabled)
   active: failed (Result: exit-code) since Wed 2019-11-06 10:25:11 PST; 54min ago
     Docs: man:mongod(1)
  Process: 1030 ExecStart=/usr/bin/mongod --unixSocketPrefix=${SOCKETPATH} --config ${CONF} $DAEMON_OPTS (code=exited,status=100)
 Main PID: 1030 (code=exited,status=100)

Nov 06 10:25:09 JDL systemd[1]: Started An object/document-oriented database.
Nov 06 10:25:11 JDL systemd[1]: mongodb.service: Main process exited,code=exited,status=100/n/a
Nov 06 10:25:11 JDL systemd[1]: mongodb.service: Failed with result 'exit-code'.

我尝试创建/data/db并更改了其权限。 我还能够运行mongod命令,甚至重新启动PC。我还尝试删除lock文件,并在MongoDB中做了repair,但结果仍然相同。

如何解决此问题?我试图寻找解决方案,但似乎没有一个适合我。

其他信息

运行sudo tail -n 20 /var/log/mongodb/mongod.log向我展示了

2019-11-05T22:17:52.153+0800 I CONTROL  [initandlisten] build environment:
2019-11-05T22:17:52.153+0800 I CONTROL  [initandlisten]     distarch: x86_64
2019-11-05T22:17:52.153+0800 I CONTROL  [initandlisten]     target_arch: x86_64
2019-11-05T22:17:52.153+0800 I CONTROL  [initandlisten] options: { config: "./etc/mongod.conf",net: { bindIp: "127.0.0.1",port: 27017 },processManagement: { timeZoneInfo: "/usr/share/zoneinfo" },storage: { dbPath: "/var/lib/mongodb",journal: { enabled: true } },systemLog: { destination: "file",logAppend: true,path: "/var/log/mongodb/mongod.log" } }
2019-11-05T22:17:52.154+0800 I -        [initandlisten] Detected data files in /var/lib/mongodb created by the 'wiredTiger' storage engine,so setting the active storage engine to 'wiredTiger'.
2019-11-05T22:17:52.154+0800 I STORAGE  [initandlisten] 
2019-11-05T22:17:52.154+0800 I STORAGE  [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2019-11-05T22:17:52.154+0800 I STORAGE  [initandlisten] **          See http://dochub.mongodb.org/core/prodnotes-filesystem
2019-11-05T22:17:52.154+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=5431M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=(recovery_progress),2019-11-05T22:17:52.723+0800 E STORAGE  [initandlisten] WiredTiger error (-31802) [1572963472:723937][2926:0x7f9a371b00c0],txn-recover: unsupported WiredTiger file version: this build  only supports versions up to 2,and the file is version 3: WT_ERROR: non-specific WiredTiger error
2019-11-05T22:17:52.724+0800 E STORAGE  [initandlisten] WiredTiger error (0) [1572963472:724065][2926:0x7f9a371b00c0],txn-recover: WiredTiger is unable to read the recovery log.
2019-11-05T22:17:52.724+0800 E STORAGE  [initandlisten] WiredTiger error (0) [1572963472:724099][2926:0x7f9a371b00c0],txn-recover: This may be due to the log files being encrypted,being from an older version or due to corruption on disk
2019-11-05T22:17:52.724+0800 E STORAGE  [initandlisten] WiredTiger error (0) [1572963472:724124][2926:0x7f9a371b00c0],txn-recover: You should confirm that you have opened the database with the correct options including all encryption and compression options
2019-11-05T22:17:52.724+0800 E STORAGE  [initandlisten] WiredTiger error (-31802) [1572963472:724152][2926:0x7f9a371b00c0],txn-recover: Recovery failed: WT_ERROR: non-specific WiredTiger error
2019-11-05T22:17:52.759+0800 E -        [initandlisten] Assertion: 28595:-31802: WT_ERROR: non-specific WiredTiger error src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp 413
2019-11-05T22:17:52.759+0800 I STORAGE  [initandlisten] exception in initAndListen: Location28595: -31802: WT_ERROR: non-specific WiredTiger error,terminating
2019-11-05T22:17:52.759+0800 I NETWORK  [initandlisten] shutdown: going to close listening sockets...
2019-11-05T22:17:52.759+0800 I NETWORK  [initandlisten] removing socket file: /tmp/mongodb-27017.sock
2019-11-05T22:17:52.759+0800 I CONTROL  [initandlisten] now exiting
2019-11-05T22:17:52.759+0800 I CONTROL  [initandlisten] shutting down with code:100
leon4180 回答:MongoDB服务无法启动

如果不需要数据库,请使用rm -rf /usr/lib/mongodb删除数据库文件夹中的所有文件(在Ubuntu路径中为/ usr / lib / mongodb),如果需要数据库,请按照以下步骤操作: 当您将MongoDB Server升级时,可以说是从3.4升级到3.6。升级之前,还需要使用此命令设置数据库功能兼容版本。 此命令必须在MongoDB Server v3.4中运行

db.adminCommand( { setFeatureCompatibilityVersion: "3.4" } )

,然后升级到下一个主要版本。 例如,您必须将MongoDB服务器从3.4升级到3.6,而不是直接升级到4.0 有关更多详细信息,请遵循MongoDB Docs

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