子进程失败，已退出，错误号为4 mongodb
首先，我想以mongodb的方式恢复数据库，复制文件夹/var/lib/mongo，然后复制文件并尝试使用mongo——修复之前，我尝试“服务mongod启动”，出现了此错误子进程失败，已退出，错误号为4 mongodb,mongodb,Mongodb,首先，我想以mongodb的方式恢复数据库，复制文件夹/var/lib/mongo，然后复制文件并尝试使用mongo——修复之前，我尝试“服务mongod启动”，出现了此错误 Starting mongod: about to fork child process, waiting until server is ready for connections. forke
Starting mongod: about to fork child process, waiting until server is
ready for
connections. forked process: 25856 all output going to:
/var/log/mongo/mongod.log ERROR: child process failed, exited with
error number 4
[FAILED]
MongoDB starting : pid=25622 port=27017 dbpath=/var/lib/mongo 64-bit host=1.example.com
db version v2.4.14
allocator: tcmalloc
options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", journal: "/var/lib/mongo/journal", logappend: "true", logpath: "/var/log/mongo/mongod.log", pidfilepath: "/var/run/mongodb/mongod.pid" }
** WARNING: Readahead for /var/lib/mongo is set to 2048KB
** We suggest setting it to 256KB (512 sectors) or less
** http://dochub.mongodb.org/core/readahead
journal dir=/var/lib/mongo/journal
recover : no journal files present, no recovery needed
****
****
need to upgrade database admin with pdfile version 4.21, new version: 4.5
Not upgrading, exiting
run --upgrade to upgrade dbs, then start again
****
dbexit:
shutdown: going to close listening sockets...
shutdown: going to flush diaglog...
shutdown: going to close sockets...
shutdown: waiting for fs preallocator...
shutdown: lock for final commit...
shutdown: final commit...
shutdown: closing all files...
closeAllFiles() finished
journalCleanup...
removeJournalFiles
shutdown: removing fs lock...
really exiting now