我已经安装了 Mongodb 4.2
和跑步时
sudo service mongod start|restart
它不会启动服务器，我在 mongod.log 文件中有以下日志。
Exception in initAndListen: MustDowngrade: Collection does not have UUID in KVCatalog. Collection: local.startup_log, terminating
这里有更多细节：
CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
CONTROL [initandlisten] MongoDB starting : pid=7434 port=27017 dbpath=/var/lib/mongodb 64-bit host=vm2851358555.bitcommand.com
CONTROL [initandlisten] db version v4.2.0
CONTROL [initandlisten] git version: a4b751dcf51dd249c5865812b390cfd1c0129c30
CONTROL [initandlisten] OpenSSL version: OpenSSL 1.1.0k 28 May 2019
CONTROL [initandlisten] allocator: tcmalloc
CONTROL [initandlisten] modules: none
CONTROL [initandlisten] build environment: …