MongoDB Archives - Juzhax Technology

Unauthorized dropDatabase in MangoDB

Normally when you want to drop a database in MongoDB, you just need these command. > use mydatabase; switched to db mydatabase > db.dropDatabase(); Error message with Unauthorized But when you see this error, it mean you are not authorized and not enough level access to run the command. Drop database in MongoDB, you need MongoDB root role. { “ok” : 0, “errmsg” : “not authorized on mydatabase to execute command { dropDatabase: 1.0, writeConcern: { w: \”majority\”, wtimeout: 600000.0 }, lsid[…]

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MongoDB set up admin and security after installed

MongoDB / juzhax

You must set an admin and password before using mongDB for security reason. You may receive some error when you login to MongoDB shell.

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Fast way to find duplicate data in MongoDB

Linux / juzhax

I need to find out the duplicate data content in my 40 Millions records, then I can make the unique index to my name field. { allowDiskUse: true} is optional if your data is not huge. { $limit : 5 }, you can set display more data.

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How to Install MongoDB 3.2 on CentOS 7

Linux / juzhax

Paste this to the file and save using :wq Download and install mongodb using yum Start mongod and configure auto start while system boot Check all the versions Test the connection

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WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’.

1 Comment / Linux / juzhax

After I install MongoDB 3.2.3 in Centos 7, I received this error when I start mongo in shell. Solution Create the init.d script. Create the following file at /etc/init.d/disable-transparent-hugepages: Make it executable. Run the following command to ensure that the init script can be used:

WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’. Read More »

WARNING: Cannot detect if NUMA interleaving is enabled. Failed to probe “/sys/devices/system/node/node1”: Permission denied

Linux / juzhax

Solution I’m using the OVH kernel, so it is impossible to use with MongoDB, to solve this issue I have to install back the original kernel of the linux, then this error will be gone.

WARNING: Cannot detect if NUMA interleaving is enabled. Failed to probe “/sys/devices/system/node/node1”: Permission denied Read More »

WARNING: soft rlimits too low. rlimits set to 4096 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.

2 Comments / Linux / juzhax

I’ve received this error while starting mongo in shell while installing on Solution Then put in and

WARNING: soft rlimits too low. rlimits set to 4096 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files. Read More »

MongoDB Error: about to fork child process, waiting until server is ready for connections.

Linux / juzhax

I tried to install MongoDB to CentOS 6.4 64Bit and found the error while I launch mongodb like this: numactl –interleave=all /usr/bin/mongod -f /etc/mongod.conf Here are the error code. about to fork child process, waiting until server is ready for connections. forked process: 9713 Wed Oct 16 02:00:00.640 terminate() called, printing stack (if implemented for platform): 0xdddd81 0x6cfbae 0x35d60203be6 0x35d60203c13 0x35d60203d0e 0x35d601a8ce7 0x35d60201a04 0x35d601ad3bc 0x35d601ae226 0xdfb5df 0[…]

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MongoDB

Unauthorized dropDatabase in MangoDB

MongoDB set up admin and security after installed

Fast way to find duplicate data in MongoDB

How to Install MongoDB 3.2 on CentOS 7

WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’.

WARNING: Cannot detect if NUMA interleaving is enabled. Failed to probe “/sys/devices/system/node/node1”: Permission denied

WARNING: soft rlimits too low. rlimits set to 4096 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.

MongoDB Error: about to fork child process, waiting until server is ready for connections.

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