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Kaushik Das Blog

  • MongoDB encryption at rest

    Encryption at Rest – means, we need to encrypt our data that we want to store on disk. It can be achieved by following two forms. Application level encryption For application level encryption, it is not a feature offered by MongoDB, rather it can be achieved at Application layer. Application developer should use any encryption/decryption… Read More »

  • Linux directory structure, user, group, permission, ownership etc.

    Before starting any mongodb administration job, we need to know very well about the system, where MongoDB is going to deploy. For this article I choose very common linux OS Ubuntu. Target readers should not be only for mongodb dba, but also for newcomers in linux, this article may be very basic for linux/Ubuntu SME’s.… Read More »

  • MongoDB installation and upgradation in Ubuntu

    Installation of MongoDB is not my goal, while installation mongodb on ubuntu we need to remember that, It should be easily upgraded to its latest version. In this article, 1. How do you easily install mongodb in your ubuntu and how do you upgrade it. 2. Later part of the article includes best practice to… Read More »

  • MongoDB query optimization

    Often we saw that after making individual machine better (Scale up) or distributed the data into shards (Scale Out) or making all read queries route to secondary replica set, yet the queries are not performing well and getting the bottleneck. Its totally depends upon your query workload, I am talking about 4-5K OPS (Operation Per… Read More »

  • MongoDB Log Rotation Automation

    When you are using mongodb for large applications (heavy write and read intensive), then you probable noticed that mongod.log/mongos.log file is growing big in size with in a few time span. I saw 20GB mongos.log file size in a single day. So, your logfile should be in a limited size for diagnostics and debugging purpose.… Read More »

  • MongoDB Enterprise Edition

    Does it free? MongoDB Enterprise is free of charge for an unlimited period of time for evaluation and development. By downloading it, you agree to the Subscription Agreement. Comparison between MongoDB Community and Enterprise Edition Features MongoDB Community MongoDB Enterprise LDAP Authentication Not Available Available LDAP Authorization Not Available Available Kerberos Authentication Not Available Available Database… Read More »

  • Install Mtools in Ubuntu for MongoDB log analysis

    According to mtools official github repo, its says that “mtools is a collection of helper scripts to parse, filter, and visualize MongoDB log files (mongod, mongos). mtools also includes mlaunch, a utility to quickly set up complex MongoDB test environments on a local machine, and mtransfer, a tool for transferring databases between MongoDB instances.” github… Read More »