mongod error

mongod start

about to fork child process, waiting until server is ready for connections.
forked process: 23987
ERROR: child process failed, exited with error number 100

没有正常关闭mongod服务,导致mongod被锁.删除掉mongod里的mongod.lock 文件.重新启动服务就行了.

---

/sys/kernel/mm/transparent_hugepage/defrag is ‘always’.

if test -f /sys/kernel/mm/transparent_hugepage/enabled; then  
   echo never > /sys/kernel/mm/transparent_hugepage/enabled  
fi  
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then  
   echo never > /sys/kernel/mm/transparent_hugepage/defrag  
fi

---

** WARNING: soft rlimits too low. rlimits set to 1024 processes, 100032 files. Number of processes should be at least 50016 : 0.5 times number of files

1. 查看当前mongodb进程信息

   ps -ef | grep mongod
   testuser 24763  3.5  0.4 394264 35708 ?        Sl   09:56   0:00 mongod --config /etc/mongo/mongodb.conf

2. cat /proc/24763/limits

   Limit                     Soft Limit           Hard Limit           Units     
   Max cpu time              unlimited            unlimited            seconds   
   Max file size             unlimited            unlimited            bytes     
   Max data size             unlimited            unlimited            bytes     
   Max stack size            10485760             unlimited            bytes     
   Max core file size        0                    unlimited            bytes     
   Max resident set          unlimited            unlimited            bytes     
   Max processes             1024                 30921                processes 
   Max open files            100032               100032               files     
   Max locked memory         65536                65536                bytes     
   Max address space         unlimited            unlimited            bytes     
   Max file locks            unlimited            unlimited            locks     
   Max pending signals       30921                30921                signals   
   Max msgqueue size         819200               819200               bytes     
   Max nice priority         0                    0                    
   Max realtime priority     0                    0                    
   Max realtime timeout      unlimited            unlimited            us

 $ mongod --oplogSize 40 --port 20000 --noprealloc --smallfiles --replSet testReplSet --dbpath /data/db/testReplSet-0 --setParameter enalbeTestCommands=1

    BadValue: Illegal --setParameter parameter: "enalbeTestCommands"
 
    try 'mongod --help' for more information

$ mongod --oplogSize 40 --port 20000 --noprealloc --smallfiles --replSet testReplSet --dbpath /data/db/testReplSet-0 --setParameter enableTestCommands=1

rs.help()
 rs.conf()
 rs.initiate()
rs.conf()
rs.help()
rs.add("CentOS2:27017")
rs.add("CentOS3:27017")
rs.conf()
rs.status()


port=27017
bing_ip=
logpath=
dbpath=
logappend=true
pidfilepath=/usr/local/mongodb/data/
fork=true
oplogSize=1024
replSet=rs1