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Sometime we need to have a copy of the rpm package. There are many ways to acquire the packages such as wget or directly from repository url from browser. But if you don’t know the url or too laz...

MySQL has recently announced the release of MySQL80 and seems like a lot of improvement has been made. So let’s start with installing it from official’s repository. You can get appropriate reposi...

Since the invention of virtual machine, it provides great convenience to the IT world. But due to the nature of cloud service, the system time of the newly prevision virtual machine is pre-set and...

Couple days ago I wrote an article about MongoDB Enable User Login Authentication and in that article, I used rc.local to optimize system environment setting for mongodb at system start up. But la...

Requests were sent from RD department about providing multi languages function on our website. But due to some “nature infrastructure code” issue, they want me to use urls to trigger corresponding...

Treesize is a very handy software that calculate all files and directories size and more other functions in windows system. But since I am using linux system so I never get the chance to use it. ...

Comparing apache and nginx, both have its strength and weakness. Though apache still has higher market proportion, but it is undeniable that nginx is catching up and has the trend of increasing in...

An official explanation of what is replica set in MongoDB. A replica set in MongoDB is a group of mongod processes that maintain the same data set. Replica sets provide redundancy and high avail...

In the previous post, I have installed Mongodb-3.6 Community Edition, please refer here: MongoDB-3.6 Community Edition Installation. By default, mongodb starts with no authentication required, mean...

In this post, I am going to use yum to install MongoDB-3.6 from MongoDB’s official repository. First we start with adding a .repo file at location /etc/yum.repos.d/. You can name the file anyway ...